Guide for production and use of hydraulic brick machine

As the name suggests, the hydraulic brick machine is a mechanical equipment that uses hydraulic transmission as the power to produce bricks. It is the mainstream model of large brick machines. As a large-scale machine, there are many requirements that need to be paid attention to when the hydraulic brick machine is used in production.

Instructions before using hydraulic brick machine

1. Before starting and using the molding machine, the operator must read and strictly implement the contents of this manual, and under the premise of ensuring the safety of the operator, carry out running-in, use and maintenance as required.

2. Check whether the hydraulic pipeline connection and installation are correct, whether the pipeline valve is opened correctly, whether the electrical circuit connection is correct, whether each lubricating oil point has lubricating oil that meets the requirements, whether the mechanical connection of each part is reliable, and the hopper and the material frame Whether there are ironware and debris, whether the air pipe and water pipe are connected intact, whether the air pressure and water pressure meet the requirements, whether the main oil pump is pre-filled with hydraulic oil, after confirming that all items meet the requirements, you can turn on the power supply, start the circulating pump, and go to the hydraulic system Fill hydraulic oil.

After the hydraulic oil filling is completed, close the refueling inlet valve and run the circulating pump for 2 hours to ensure that the hydraulic oil reaches a temperature above 15°C. Then stop the circulating pump, exhaust the air in the oil tank of the pump station, start the circulating pump again, and then start the main Pump, adjust the system pressure, manually actuate the movable crossbeam, the mold base crossbeam, the distributing trolley and the robot manipulator, according to the speed, adjust the opening size of each action valve, and then install the mold.

Start of hydraulic press production

ZY1200B Cross Stacking Hydraulic Forming Machine

1. Preparations before the start-up of press brick production

1) Observe the oil tank level on the main engine. The level is between 1/3 and 2/3 of the scale. When the level is lower than 1/3, the appropriate amount of new hydraulic oil that meets the requirements should be added in time.

2) Check each lubrication point and confirm that the lubrication point is sufficient.

3) Check whether the compressed air pressure is between 6 and 8 bar.

4) Check whether the pressure of the cooling circulating water is above 4bar and the water temperature is below 30℃.

5) Check whether there is material in the material frame and hopper, whether there is debris in the material, and remove the debris.

6) Check the connections of all oil pipes, water pipes, and compressed air pipes, and tighten them reliably to ensure no leakage.

7) Check whether the robot manipulator is in the initial position and whether there is air leakage in the gas path.

8) Check whether the clip of the robot manipulator falls off, and reset the clip that has fallen off.

ZY1200B-cross-stacking-hydraulic-forming-machine

2. Start-up and operation of hydraulic brick machine

1) When the forming machine is started, personnel are not allowed to approach areas that may cause injury, such as the rotating part of the pump, the moving part of the distributing trolley, the rotating part of the distributor, the pressing part of the movable beam of the main unit, and the demolding part of the mold base beam. Within the palletizing range of the robot manipulator, the range of the forward and backward movement of the feeder, the chain transmission range of the scraper, etc.!

2) When the ambient temperature is below 5°C, the circulation pump should be started first, and the circulating pump should be cycled for enough time to ensure that the oil temperature is above 15°C before starting the hydraulic main and auxiliary pumps.

3) Every time you start the molding machine, the working time of starting the hydraulic pump should not exceed 10 seconds to protect the motor and hydraulic pump. If it fails to start, stop for 1 to 2 minutes before starting the next time. If it fails to start three times in a row, find out the cause, and then start after troubleshooting.

What is the difference between cement mortar and mixed mortar?

Cement mortar and mixed mortar are common and commonly used materials in decoration, but many people in life do not know what is the difference between cement mortar and mixed mortar. Let’s take a look at the difference between cement mortar and mixed mortar.

The difference between cement mortar and mixed mortar

Cement mortar=cement+sand+water, used for the foundation of masonry masonry and a few parts in indoor plastering.

Cement mixed mortar = cement + sand + gypsum + water. Used for masonry on the ground and most parts of indoor plastering.

Special Thin Layer Plastering Mortar

1. Cement mortar simply means that cement, sand, and water are configured through a certain ratio; while cement mixed mortar is configured through a certain ratio of cement, sand, gypsum, and water.

2. If it is used for decorative plastering, it should be cement mixed mortar for internal walls, and cement mortar for external walls and bathroom walls. If it is used for masonry walls, use cement mortar below the ground and cement above the ground. Mixed mortar, this is mainly because cement mortar has good water resistance, and cement mixed mortar has good water retention. In a dry environment, the bonding ability of cement mixed mortar is greater than that of cement mortar, but in a humid environment, the strength of cement mortar is greater than that of cement mixed mortar.

3. If it is plastering below the ground, the facade is waterproof, and cement mortar is used, but it is mixed with waterproof powder. In addition, the strength of cement sand will be higher than that of mixed mortar, so cement mortar should be used for corner protection around the door and window holes.

Heavy Plaster Gypsum Mortar

4. Cement mortar is easy to crack, which is one of the reasons why mixed mortar is used for interior wall plastering instead of cement mortar. In addition, from the appearance point of view, pay attention to the water retention of cement mortar during transportation. In the bumpy process of transportation, the water on the surface is cement mortar. Mixed sand), and the workability and water retention of mixed mortar are better than cement mortar.

5. Mixed mortar: After adding lime paste, the workability and water retention of masonry mortar are better than cement mortar, which is convenient for construction and operation and saves cement, but the strength is reduced, and the waterproof and moisture-proof ability is poor. Generally used for +-0.000 The above parts are not moisture-proof. Cement mortar: mainly used in wet parts such as basements, hydraulic engineering, etc. Compared with mixed mortar, cement mortar with the same label has higher strength than cement mortar. Therefore, the specification stipulates that cement mortar should be used as corner protection for door and window openings.

Polymer Waterproof Mortar

The fundamental difference between cement mortar and mixed mortar is that the composition materials of the two are different, that is, the distribution ratio is different. From the quality point of view, the mixed mortar is better and not easy to break. The price of cement mortar and mixed mortar depends on the price of concrete and sand. If the workmanship is fine, the price will be different.

The above introduction is related to the difference between cement mortar and mixed mortar. I hope it will be helpful to you. I believe that after reading these introductions, you will have a general understanding of the difference between cement mortar and mixed mortar.

Three future trends of prefabricated buildings

Greening is the most important symbol of prefabricated buildings

Green prefabricated buildings are the most important symbol of the industrialization and modernization of buildings. The new green prefabricated building system will inevitably be widely used in future buildings.

Prefabricated building

At present, developed countries are paying attention to the development of new green assembly building systems based on composite structural systems, steel structures, steel/plastic structures, and wood structures. The goal is to make prefabricated buildings from design, production, transportation, construction, and use to In the entire building life cycle of scrap treatment, the impact on the environment is the smallest and the resource efficiency is the highest, making the building’s component system develop in the direction of safety, environmental protection, energy saving and sustainable development.

Prefabricated building

The prefabricated building system will be modularized, standardized and integrated

At the current stage in my country, enterprises and research institutions are dominated by their own R&D systems, and technology is still a closed system. The disadvantages are low integration, limited structure, lack of design flexibility, and no popularization of modularity. The future technology development trend is to transform from a closed system to an open system. It can devote itself to the development of standardized functional blocks, unified modules in design, and personalized integration, which is easy to be unified and full of changes, which facilitates production and construction. Give designers and builders more freedom in assembly and construction.

Prefabricated building

Integrated construction, general engineering contracting is the general trend

To overcome the design, production, and construction problems encountered by prefabricated buildings, it is necessary to implement integrated construction and promote the development of general contracting. All aspects of prefabricated buildings from design, construction to construction put forward higher professional technical requirements for practitioners. Therefore, it is particularly important to have a professional and collaborative engineering general contracting team. The implementation of an integrated modern enterprise operation management model in production, construction and assembly, operation management and other links can maximize the role of the enterprise in the integration of design, production, construction and management of resource allocation and maximize overall benefits .

What are the construction standards for autoclaved aerated concrete blocks?

Autoclaved aerated concrete block has light weight, thermal insulation performance, good fire resistance performance, good energy saving and environmental protection, effective use of industrial waste, economical cost, and more importantly, it has strong shape and convenient construction by workers. It is precisely because of these advantages that aerated concrete blocks are widely used as infill walls.

There are two masonry methods for autoclaved aerated concrete blocks: one is to bond the mortar to build the mortar joint with a thickness of 3.4mm. The second method is cement mortar, cement mixed mortar or autoclaved aerated concrete block masonry mortar masonry. At present, most construction sites use the second method. So what are the construction standards for autoclaved aerated concrete blocks, let’s take a look at them in detail!

AAC block

(1) The masonry of autoclaved aerated concrete blocks must strictly comply with the technical index requirements of the national standard “Code for Construction Quality Acceptance of Masonry Engineering” (GB 50203-2002).

(2) Reasonably arrange the construction period and do not blindly rush to work. If possible, try to avoid building during the rainy season.

(3) Masonry mortar should use special mortar with good bonding performance, its strength grade should not be less than M5, the mortar should have good water retention, and inorganic or organic plasticizers can be mixed into the mortar. If possible, special aerated concrete masonry mortar or dry mortar should be used.

(4) In order to eliminate the shrinkage cracks between the main structure and the enclosure wall due to temperature changes, tie bars must be left at the junction of the block and the wall column, and the vertical spacing is 500-600mm (according to the selected product (Determined by the height specification), press-buried 2Ф6 steel bars, with both ends extending into the wall not less than 800mm; in addition, when the masonry is 1.5m high, 2Ф6 full-length steel bars should be used to prevent shrinkage and cracking of the wall.

qiekuai

(5) Set up structural beams and columns in walls with larger spans or heights. Generally, when the wall length exceeds 5m, a reinforced concrete structural column can be installed in the middle; when the wall height exceeds 3m (≤120 thick wall) or 4m (≥180 thick wall), a reinforced concrete waist beam can be added at the waist of the wall.

(6) The junction of the window sill and the wall between the windows is the place where the stress is concentrated, and it is easy to cause cracks due to the shrinkage of the masonry. Therefore, it is advisable to install reinforced concrete cast-in-place tape at the window sill to resist deformation. The upper corners of the door and window openings are also prone to cracks and hollows, and ring beams should be used here instead of lintels.

(7) The horizontal unevenness of the aerated concrete exterior wall (such as molding, rain cover, eaves, window sill, etc.) should be flooded and dripped to avoid water accumulation.

(8) Calculate the number of skins and rows according to the block size before masonry, check and correct the tie bars. A certain height of plain concrete with the same thickness as the wall can be pre-poured at the root of the wall. At present, the commonly used method is to lay two red bricks, leaving a gap of about 20mm high on the top skin, so as to use the same material as the original block. The solid auxiliary small blocks are laid obliquely and squeezed tightly.

(9) Since the performance indexes of aerated concrete blocks of different dry density and strength grades are different, the aerated concrete blocks of different dry density and strength grades should not be mixed, and the aerated concrete blocks should not be mixed with other bricks. , Block mixing.

(10) Strictly control the moisture content of the aerated concrete block on the wall. According to relevant regulations, the moisture content of aerated concrete blocks should be less than 15% during construction, and less than 20% for fly ash aerated concrete products. The drying shrinkage law of aerated concrete shows that the shrinkage value of the moisture content between 10-30% is relatively small (usually 0.02-0.1mm/m).

According to experience, it is appropriate to control the moisture content of aerated concrete blocks at 10-15% during construction. The moisture depth of the blocks should be 8-10mm on the surface. The moisture depth of the surface can be observed by scraping or knocking on a small side. Determined by experience. Under normal circumstances, watering 24h before masonry, the amount of water should be determined according to the season and dry and wet temperature at the time of construction, controlled by the surface wetness. It is forbidden to directly use blocks full of rain or excessive watering.

Threshold sheet

(11) The daily height of aerated block masonry shall be controlled within 1.4m, and the daily height of aerated block masonry shall be controlled within 1.2m during spring construction, and the masonry shall be stopped on rainy days. When the masonry reaches about 200mm from the bottom of the beam, it should be statically stopped for 7 days after the masonry is deformed and stabilized, and then the solid auxiliary small blocks of the same material are used to squeeze the solid auxiliary block.

(12) When building aerated blocks, the mortar joints should be horizontal and vertical, and the upper and lower layers should be cross-staggered. The corners should bite each other. The mortar should be full. The horizontal mortar joints should not exceed 15mm and the vertical mortar joints should not exceed 20mm. The fullness is required to be above 90%, and the vertical joints should be grouted with internal and external temporary splints. After the masonry, the internal and external mortar should be used to hook the joints to ensure the fullness of the mortar.

(13) The construction joints of the wall must be built into sloping chaps, and the length of the sloping chaps should not be less than 2/3 of the height.

(14) After the wall is built, rain-proof cover should be done to avoid direct rain showering on the wall; the wall of the outer wall facing the sun should also be shaded to avoid the high temperature causing the moisture in the mortar to volatilize too fast, if necessary Spray water with a sprayer for maintenance.

(15) At the junction of the block wall and the concrete beams, columns, and shear walls, as well as the frame of door and window holes and the inner corners, nail and hang a 10mm×10mm mesh size steel mesh, each side is 200mm wide, and the mesh should be overlapped. It is flat and firmly connected, and the lap length is not less than 100mm.

(16) When chiseling grooves and laying pipes on the wall, special tools should be used instead of an axe or tile knife. The surface of the pipe should be 4~5mm lower than the wall surface, and the pipe and the wall should be clamped firmly. Loose, rebound, and then water and moisten, the filling strength is equal to the mortar used for masonry, and the wall is leveled, and 10mm×10mm steel wire mesh should be laid along the pipeline laying direction, and its width should span the slot, and each side should not be less than 50mm, tightly nailed.

The above is all the introduction to the construction standards of autoclaved aerated concrete blocks. With the continuous advancement of wall material innovation, autoclaved aerated concrete blocks are used as a new type of building wall material with light weight, sound insulation and good thermal insulation properties. It has gradually been widely used in construction projects, and the application of autoclaved aerated concrete blocks has a good development prospect.

AAC Material Handling Procedures

Please read the following instructions to insure proper handling and installation of autoclaved aerated concrete (AAC). Damage may occur if AAC is moved or handled several times.

All special considerations for construction products

Deliver material far enough in advance of the installation start date so schedule will not be delayed.

Unload panels using pallet forks (either Unload panels using pallet forks (either forklift, nylon straps, slings or pallet fork on a crane cable).

Storage areas should be accessible to delivery trucks and convenient to material staging areas. If possible, drop-deliver the material right to the material staging areas.

Storage material should always be stored away from other construction activities on a flat-grade area that is not susceptible to standing water, erosion or settling. In adverse weather conditions, keep the material covered and banded until ready for installation.

 Panel Construction

Panel construction

Do not “shake-out” stored materials until they are ready to be installed. Excessive handling may cause damage. Set delivery schedule to match the erection sequence exactly.

Most chipped corners and edges can be repaired. If any reinforcing is visible, contact an authorized representative.

All damage must be repaired using an approved structural grade patching compound developed specifically for products.

Precast autoclaved aerated concrete panels that have surface or minor cracks are usable but contact an authorized representative when cracks continue completely through the panel.

 Panel Construction

Stored or staged materials should always be set on flat, load-bearing, stable grade on pallets or dunnage.

Disclaimer: the information contained within this document shall be used as guidelines for workmanship and general construction practices for the installation of Products. This information should be recognized as recommendations and should be used with judgment. Implementation, interpretation and use of this document shall be the sole responsibility of the installation contractor.

Questions and answers on the construction method of aerated concrete (AAC) wall panels in construction

(1) How many installation methods are there for AAC interior wall panels? How to fix it?

The installation of AAC interior wall panels is divided into horizontal mounting panels and vertical mounting panels, and both ends are usually fixed.

The commonly used fixing methods of AAC interior wall panels are U-shaped clamping method, pipe clamping method and hook bolt method. The hook bolt method is mainly used in steel structure engineering because it requires welding.

AAC construction

(2) How to deal with the joints of AAC internal wall panels and beam-column panels?

AAC interior wall panels and beam-column panels and other structural joints are divided into surface treatment and board seam treatment. Surface treatment is to add a 200mm wide alkali-resistant grid cloth (100mm on each side) at the joint when scraping putty on the surface. For plate joint treatment, a gap of 10-20mm is left at the joint. When the span is small (≤6m), the joint is compacted with bonding mortar; when the span is large (>6m), to prevent temperature shrinkage and deformation, use in the joint Foaming agent filling (change the foaming agent to rock wool when there is a fire protection requirement).

AAC construction

(3) About the waterproof problem of the bathroom and kitchen partition wall

It can be treated with waterproof technology according to conventional design requirements, such as TS coil, SBS coil, polyurethane coating, etc.

(4) Regarding the grooving of hydropower embedded pipelines (boxes) and pipelines

When the water and electricity pipelines need to be embedded in the construction, the longitudinal slotting can be directly adopted. Because the two layers of steel mesh are arranged in the slab, it can also be slotted laterally at a small distance. When grooving, you should first cut out the outline with a cutting machine, not directly with a chisel. After laying the pipe, use polymer mortar or adhesive to wipe it firmly.

Because the junction box or distribution box needs to open large holes when the board can be punched through as needed, after the installation is completed, it can be smoothed with polymer mortar or adhesive.

(5) About the handling of tiles or other small veneer items on the wall

In the bathroom, kitchen or exterior wall, tiles or other small veneer decorations are often needed. You can first brush a line of acrylic emulsion (107 glue) on the board, and then apply 2~3㎜ interface agent (or plain cement slurry). Then paste it with tile or jewelry adhesive.

(6) Regarding the handling of heavy objects hanging on the wall (such as water heaters, wash basins, radiators, indoor and outdoor air conditioners, etc.)

100mm thick AAC board can hang 120kg at a single point.

Lightweight hanging parts, hooks, etc. on the wall can be directly fixed by self-tapping nails; heavy objects (washbasins, radiators, water heaters, wash basins, wall cabinets, indoor and outdoor air conditioners, etc.) installed on the wall can be expanded ≥10 Bolt or through bolt (transmitting force to the wall) fixed.

(7) The form of sheet interface can be divided into

1. Flat mouth: Adhesive bonding, easy to crack, rarely used.

2. C-shaped mouth: double grooves, expressed as two C-shaped forming a circular core column, with upper and lower reinforcements and grouting in the middle. The advantage is good structural performance. The disadvantage is that the process is complicated, the construction is inconvenient, and the grouting is prone to be not dense or even broken, and the surface cannot be inspected.

3. T-shaped mouth: the concave-convex groove interface, the sides are squeezed to fit each other after beating, with good integrity and structure, easy to construct, and the most widely used (Tianyu AAC board currently mainly produces T-shaped mouths).

4. L-shaped mouth: mainly used for floor and roof slabs.

AAC Products & Applications

Autoclaved aerated concrete

AAC stands for highly efficient thermal insulation, optimal fire protection, and masonry with excellent load-bearing abilities. Lime, sand, cement, and water – mineral and natural raw materials – form the main ingredients of AAC. A large amount of closed cells with stagnant air give the panels and blocks unique properties and processing advantages. This allows to build fast, flexible and affordable. and the products can therefore be used in a diverse range of applications for both new construction and renovation projects.

Large-format prefabricated AAC panels are used in large-scale business construction projects, such as logistics centers, warehouses, and production facilities, as well as event centers and sports halls.

AAC product building

For house construction, commercial and industrial buildings

AAC is not only used to construct inner leaves of cavity walls and partitioning walls but also internal, external and fire walls in both load-bearing and non load-bearing designs. AAC therefore is known as being efficient for both house construction and for commercial and industrial buildings.

High construction speed

In addition to its versatility, AAC blocks or panels are characterised by its ease of working and construction. This results in a relatively high construction speed which can deliver cost savings, particularly in high-volume projects.

Labour-friendly product

The material and product properties make AAC suitable for both new-build projects and for renovation works. The light weight and the ease of construction especially play an important role in the field of renovation.

The concrete construction method of gypsum mortar plastering

As a new product to replace cement mortar, gypsum mortar plastering has the strength of traditional cement, and is more environmentally friendly and durable than cement, with strong adhesion, not prone to chalking, cracking, hollowing, etc., and is easier to use Cost is lower. So what is the construction process of gypsum mortar plastering? Let’s take a look at the construction method of gypsum mortar plastering.

Plastering construction with gypsum mortar

1. Primary treatment

(1) Before construction, clean up dust, oil stains, dirt, spacers and other impurities on the surface of the base layer in advance;

(2) The concave and convex parts and openings on the grassroots level should be handled clearly and kept flat and firm;

(3) The gap between the door and window frame and the wall should be embedded and dense according to the doors and windows of various materials;

(4) Moisten the base layer with water in advance, and pay attention to no clear water on the surface before plastering;

(5) Start to make corners around the walls, doors, windows and pillars.

Plastering construction with gypsum mortar

2. Construction technology

(1) Determine the plastering sequence, first up and down, starting from the doorway, and working continuously on the entire wall;

(2) Ordinary concrete ceiling can be plastered with plastering gypsum once;

(3) Set signs or bars according to the flatness of the wall base; the distance of the vertical bars should be 1.2-1.5 meters, and the width of the bars should be 0.03-0.05 meters;

(4) If the plastering thickness is less than 0.05 meters, you can directly use gypsum mortar for plastering. If the thickness is more than 0.05 meters, you can directly use the light bottom layer for primer, and then use the surface layer to plaster the plaster;

(5) Apply gypsum mortar to the base layer according to the design thickness, and then use the H-shaped ruler and scraper to stick to the standard bar, and scrape the flat layer of dust up and down;

(6) Calender with a trowel, and then use a ruler to check the flatness of the wall;

(7) After plastering, pay special attention to timely cleaning the relevant positions;

(8) When plastering with plaster and mortar, clean up the floor ash, pay attention to good ventilation after calendering, and avoid washing the finish with water. After the construction, remember to clean the plastering tools in time.

What are the precautions for the construction of autoclaved aerated concrete blocks

In the current wall masonry technology, the new wall materials mainly use autoclaved aerated concrete blocks, which has been widely used.

Autoclaved aerated concrete blocks are mainly used in the construction of frame structures. At this stage, they have replaced the clay solid brickwork materials. This kind of materials uses cement, lime, gypsum, and river sand as the original materials, foamed with aluminum powder and formed , Autoclave and other processes to make a microporous block wall. This kind of new technology has stricter quality requirements than the previous concrete block craftsmanship, and requires a more in-depth discussion of its quality control methods and points.

1. Selection of autoclaved aerated concrete blocks

Cracks are a common quality problem of autoclaved aerated concrete block walls, which have a lot to do with the shortening of the period itself. Therefore, it is necessary to select blocks with a relatively small boring shortening value. According to common sense, the higher the density of the raw materials used, the smaller the boring shortening value. When considering this condition, the thermal conductivity of the block also needs to be considered.

When selecting, take into account the differences in raw materials and production skills, and the boring shortening value of products from different manufacturers is different. In order to ensure production quality, it is best to choose products with sophisticated skills, stable quality and better maintenance when purchasing.

2. The control method of construction skills

AAC panel

(1) Make relevant layout diagrams of blocks

The layout plan of the aerated concrete blocks is not planned before construction, resulting in the overlap length of the upper and lower blocks being short in some parts, and the masonry mortar used in the infill wall has a low strength level. Reinforcing steel mesh will shorten the wall and cause axial tension, which will show straight cracks along the tooth gap.

Therefore, before the wall is built, it is necessary to make a layout drawing according to the characteristics of the engineering drawing, according to its requirements, according to the modulus and size of the blocks. In the 40-60 days after the block leaves the factory, the volume will not change before the wall can be installed. It is also necessary to consider the upper and lower joints of the block. For this, it is necessary to make the length of the overlap greater than the length of the block. 1/3, greater than 150mm. If the lap length of the 3 skins in the same part cannot meet the above requirements, it is necessary to place the 26-month steel bar in the horizontal gap, and the length of both ends of the steel bar is required to exceed the straight seam line by 350mm.

(2) Set up relevant concrete guide walls

Regarding the problem of setting a concrete guide wall at the bottom of the wall:

a. The walls of the ground floor construction (except the basement) all require the installation of concrete walls. Due to the strength of the foot of the wall and the impermeability of the wall, the durability of the house is higher;

b. For multi-storey construction (non-high-rise construction), concrete guide walls should also be installed on the second floor or above, which helps to keep the same elevation and can effectively waterproof during construction;

c. For high-rise construction, the concrete guide wall will increase the weight of the wall, which is not conducive to the stability of the construction structure, so guide walls are not allowed.

AAC block

(3) The influence of water content on the upper wall of the block

The water content of the block has a serious impact on the upper wall: Take aerated concrete block as an example, it has a large porosity and can absorb a lot of water.

If during construction, the block is not allowed to fully absorb water and wet before plastering, it will cause it to absorb a lot of water from the plastering mortar, which will prevent the hydration of the mortar and cause the strength of the plastering mortar to fail.

Before building the wall, it is necessary to make the blocks absorb water to fully wet the surface. In addition, if the water content of the block is too large, it will cause the block to lose water and reduce its volume, showing cracks and gaps on the wall.

Therefore, the water content of the block should not exceed 15%. Special attention should be paid to the concealment of the block when working in rain. When the rainfall is more than light rain, the masonry shall be stopped and the masonry shall be concealed to prevent rainwater from intruding. The blocks shall enter the construction site 7 days in advance and be placed indoors, so that the moisture content of the blocks can reach the outdoor atmosphere. Approximately balance the exterior wall wetted by rainwater, and the wall plastering should be performed after the moisture content of the exterior wall is approximately balanced with the outdoor atmosphere.

General sheet

(4)Requirements for fullness of mortar

In construction, the fullness of the mortar also has certain requirements. The fullness of the mortar joint of the masonry is controlled above 80%, and the thickness of the mortar joint is often 812mm as the standard. If the adhesive is used for dry operation, the thickness of the mortar joint should be 35mm as the standard. When building each leather block, all the mortar joints need to be compacted with the original slurry to make the concave joints. Should be 13mm.

When carrying out the overall masonry operation, it is necessary to use the “extrusion method”, “grouting method” and other methods to make the mortar of the vertical joint plump. It is necessary to carry out the masonry and joint repair and joint work together. The more important treatment is the frame and The joints between the blocks.

After the blocks on the upper layer are processed, the secondary jointing of the interlayer jointing is required. After the wall structure is stabilized, red bricks are required to be used for oblique masonry, and the frame beams and blocks shall be tightly supported. The gap in between can also be filled with fine stone concrete (containing expansion agent).

Installing Floor & Roof Panels

There are a full range of tools that are specially designed to assist in installing floor panels and increase productivity at the job site. AAC masonry installation will also require the following standard masonry tools.

Installing Floor & Roof Panels

Step 1

Unload bundles of panels in proper manner using approved unloading gear. If panels must be stored, place them in a clean area without standing water that is close to where work will begin.

Installing Floor & Roof Panels

Step 2

Layout bearing lines using a tape measure, layout and chalk the bearing (bearing area is represented by red shaded areas 2 ½” minimum to 3” maximum) lines on top of walls using detail drawings approved for construction. Make sure all bearing, top-of-wall surfaces are level.

Installing Floor & Roof Panels

Step 3

Attach panel lifting gear. Place panels in a flat position with topside up. Attach approved panel lifting gear (floor clamp) to the first panel. Be sure to observe manufacturer’s proper attachment procedures and safety guidelines.

Installing Floor & Roof Panels

Step 4

The first-floor panel is lifted, placed and adjusted into exact alignment along bearing lines. A person is required to steady and guide each end of the panel. Note the edge profiling and mark number of the panel and install accordingly. Maintain minimum bearing according to drawings. Bearing pads should be placed on top of wall where the bearing of the floor panel will occur. Start the first panel with the groove facing the direction you will be laying the panels in or you will not be able to release the clamp when installing the next panel.

Installing Floor & Roof Panels

Step 5

Repeat for remaining panels. Lay the remaining panels ensuring that each one is seated firmly beside the preceding one.

Installing Floor & Roof Panels

Step 6

Placing last panel. The correct lifting gear will greatly assist placement of the last panel. Special procedures may be required if other lifting devices are used (i.e. slings or ropes).

Installing Floor & Roof Panels