Archive for category: Industry information

The trayless packaging technology of autoclaved aerated concrete blocks is one of patented technologies of our group. By optimizing the structure, the ZYB series packaging machine realizes the automatic handling of the whole stack of blocks. The main features of the system are as follows:

(1) High automation. The whole line only needs 1 to 2 people to operate, with high labor efficiency and fast speed.

(2) Cost reduction. Trays do not participate in market circulation, which greatly reduces packaging costs and wood waste.

(3) Good packaging effect. Chain conveying, segment driving, seamless connection, avoiding damage to the blocks.

(4) Reasonable structure. L-shaped layout, with small footprint, which is conducive to operation and guarantees safety.

Construction comparison between ordinary block “wet construction” and high quality AAC block “dry construction”。

In addition to the products, supporting materials, construction methods, construction tools are different between the two, there are obvious differences in masonry ash seam, plastering thickness.The practice shows that the aerated concrete block with accurate size and superior performance can effectively prevent the common defects of building quality.

Such as empty drum, cracking and penetration by using “dry construction”and the wall can be self-insulated, that is, the external wall without additional heat insulation structure, to achieve the combination of enclosure and energy saving, can meet the requirements of building energy saving, and can fundamentally solve the external wall composite insulation layer easy to fall off, fire hazards, short service life technical problems.

In addition, it can improve the wall quality, overall performance and construction efficiency, reduce the consumption of resources and reduce the project cost by more than 10%.

In the eyes of almost everyone, building a house is nothing more than the combination of sand, cement, steel, brick, etc., according to a certain proportion of a certain structure, so as to become a house. What if, someone said, building a house could be like building lego? The answer is yes, prefabricated buildings, the new building model, will make their lego dreams come true for more people.

In fact, prefabricated buildings began to attract interest in the early 20th century and finally came into being in the 1960s. Britain, France, the Soviet union and other countries first tried. Because prefabricated buildings were built quickly and cost less to produce, they quickly spread around the world. The earliest prefabricated building was a wooden frame house used by the immigrants to America in the 17th century.In China, prefab architecture first appeared in Beijing in the 1980s, but for a long time after that, it was virtually “dead” in China. It was only in recent years that the prefab model returned to the public eyes. What is a prefabricated building? A building made of prefabricated parts assembled on a construction site. Take a simple example, like lego bricks that children play with. Lego manufacturers design and make the bricks into a variety of shapes, and children make their own creations by piecing them together according to their own ideas.

More important than the flexibility of design is the practical advantage of construction. Like, environmental protection, high efficiency, standard, green and so on. But understanding the practical advantages of prefab buildings is more in the realm of expertise, and for most people prefab is probably just a technical term. More people are concerned about what kind of difference this architectural model can bring to their living.

Q1: can prefabricated houses keep warm in winter?

A1: When prefabricated buildings are constructed, thermal insulation materials will be integrated into the prefabricated parts according to the construction requirements. And some beams and columns will be done in advance in the prefab.

Q2: how to ensure the quality of construction and assembly because of the prefabricated building model?

A2: The biggest feature of prefabricated buildings is the high technology content. In the design stage, diversified and all-round physical experiments are carried out. In the production stage, the quality control ability of the factory is greater than that of the traditional cast-in-situ construction method.

Q3: when assembling prefabricated parts, how to avoid seepage, frost heave (integration decoration), corrosion and other problems?

A3:At present, most prefabricated buildings solve the problem of water leakage through structural, structural and material waterproofing. Reduce the manufacturing error of door and window openings of prefabricated door and window parts, ensure the accurate installation of thermal insulation outer window made by the factory, and improve the thermal insulation effect.

Q4: when prefab house is being decorated, what is the difference with traditional house?

A4:  The decoration of prefab house is “complete decoration”. In the process of production and construction, has been the late decoration of artificial water, electricity, heating, housing load-bearing walls for the second modification of the problem in advance. The waste of manpower, material and financial resources was avoided. When owner decorates his house, can put more emphasis on the interior decoration design of the house.

Since 2016, China has decided to promote prefab buildings nationwide and made a breakthrough. Local prefab building production bases have also been built across the country. It is believed that in the future, more and more buildings will join the ranks of prefabricated buildings.

 

Autoclaved aerated concrete panel is made of cement, quartz sand and lime as the main raw materials, aluminum powder as the foaming agent, and adopts the patented technology formula, which is a high-performance uniform porous silicate board made by high-pressure steam curing. The steel plate is equipped with reinforced steel mesh treated with patented anti-rust and anti-corrosion technology, which can meet different structural design requirements. It has superior lightness, thermal insulation, fire resistance, sound insulation, bearing capacity, shock resistance, impermeability and environmental protection.

Comparison of performance and cost of autoclaved lightweight aerated concrete and other wall materials

1. Direct economic benefits

The price of autoclaved aerated concrete panels is between autoclaved lightweight aerated concrete blocks and other lightweight wall materials, but due to the characteristics of the material itself, it is determined that the construction is fast, special repair powder, jointing agent can repair the jointing energy Effectively reduce the occurrence of cracks on the wall, without plastering the wall surface, using autoclaved aerated concrete slabs to increase the indoor area of ​​about 4500m2 compared with traditional aerated concrete block walls.

In summary, the direct cost per square meter can save about 30 yuan. The use of aerated concrete wallboard covers an area of ​​nearly 140,000 m2, which can save about 4.2 million yuan in cost.

2. Indirect economic benefits

Reduce the intermediate links of construction and speed up the project progress; reduce the generation of cracks on the wall; no plastering on the wall surface; environmental protection and energy saving in the production and construction links improve product quality and achieve energy saving and emission reduction effects.

Autoclaved aerated concrete panel has the following innovations

1) Reinforced mesh treated by autoclaved aerated concrete panel anti-rust and anti-corrosion technology increases the service life of the wall panel;

2) The application of autoclaved aerated concrete panels reduces other construction procedures, and the construction method is more convenient;

3) No harmful substances are used in the whole process of the production process. The finished products do not contain harmful substances, and water and materials are recycled. The construction and installation adopts dry method operation, which does not affect or pollute the environment. After testing, the internal exposure index of the material is only 0.2 (standard requirement ≤1.0), and the external exposure index is 0.1 (standard requirement ≤1.0), which is non-radioactive. Green materials that do not contain harmful substances;

4) The indexes of thermal insulation, fire resistance, sound insulation, bearing capacity, seismic resistance, impermeability, etc. all meet or exceed the requirements of the standard;

5) This material can also be combined with thermal insulation materials, and can be used as an external wall to make various shapes, decoration, heat preservation, and maintenance integrate multiple functions in one;

6) Reducing the weight of the structure, improving the stability of the structure, and saving costs, saving about 4.2 million yuan in investment than aerated concrete blocks;

7) Due to the construction method and the size of the wall itself, the use of autoclaved aerated concrete panels increases the indoor use area by about 4500m2 compared with other wall materials.

To sum up

1) Effectively and effectively solve the problem of filling the wall cracks, increasing the indoor use area of ​​the building;

2) By contrast, the technological content of the project construction has been improved, the construction products are more energy-saving and environmentally friendly, and the product quality of the real estate has been improved;

3) Lightweight, thermal insulation, fire resistance, sound insulation, bearing capacity, shock resistance, impermeability, and environmental protection are all superior performances;

4) As an environmentally friendly product, autoclaved aerated concrete slab conforms to the current requirements of “taking science and technology as the guide, energy saving and emission reduction as the priority, and building a low-energy demonstration project”, and has the role of radiation.

The exterior wall of the building adopts aerated concrete blocks, considering the material, construction process, construction schedule, construction quality cost and other factors. After the organization of the expert demonstration meeting, the use of autoclaved aerated concrete panel is more reasonable.

Affected by the epidemic COVID-19, the output value of the construction industry in China and even the world is greatly affected. With the continuous advancement of resumption of work and production, enterprises in the construction industry should pay attention to supply chain management(SCM), increase technology and management reserves, and seize the opportunity in the crisis.

The negative impact of the epidemic COVID-19 on the construction industry is mainly in three aspects. First, although some construction sites have been resumed, the industrial chain has not yet been fully restored, and the output value of the construction industry has been greatly lost. Second, as a labor-intensive industry, the construction industry’s almost shutdown in the past three months has a significant impact on employment. Third, due to the continuity and strength of construction operations, the early stage of resumption of work will inevitably cause problems such as waste of materials and reduction of work efficiency.

When the epidemic situation comes, the construction industry is facing a “crisis” but we must also see the “opportunity”. From a management perspective, high-level decision-making can overcome the crisis and seize the opportunity. If the production method of the construction industry can accelerate the transformation and upgrading since then, thereby promoting a major change in the strategic production method, it will have a profound impact on the development of the economy.

The traditional production methods of the construction industry attach importance to project progress, quality and cost, but the concept of HSE (health, safety and environment) is insufficient. The uncertainty brought by the epidemic will make the concept of green construction more important in project management and more in line with the concept of high-quality and sustainable green development. Compared with manufacturing, the construction industry is an industry that lags behind in innovation. The epidemic made the construction industry more widely use information technology such as building information models(BIM) and supervisory control and data acquisition (SCADA), and promoted the innovation of working methods. Enterprises should pay more attention to emergency management and improve the emergency management system for major projects.

After the epidemic is controlled, some enterprises could resume work quickly, while others could do nothing but worry. The key lies in the ability of external supply chain management. The industry chain of the construction industry is long and tightly connected, involving multi-level suppliers such as subcontracting, labor services, materials, and equipment. If one or two links are disconnected, it may lead to overall stagnation. Future enterprise competition is not a competition between individual enterprises, but the competition of the supply chain formed by each enterprise. The integrity of the supply chain will constitute the core competitiveness of the enterprise. The success of the project also lies in the common value-added of the entire supply chain enterprises. Enterprises should identify weak links in the supply chain exposed during the epidemic and make up for shortcomings, and transform to a higher level of management.

The construction industry chain is very intuitive for the promotion of manufacturing, employment and other fields. Infrastructure investment is still one of the important means of economic recovery. The construction industry chain is very intuitive for the promotion of manufacturing, employment and other fields. Infrastructure investment is still one of the important means of economic recovery. However, we must pay attention to avoid duplication of investment, should increase investment in rural water conservancy infrastructure, prevention and control of soil and water pollution and other aspects. On the new infrastructure projects, avoid rushing forward, do a solid feasibility analysis, proceed step by step according to the region and the gradient, take small steps and keep on going, take into account economic and social benefits, do a good job in talent, technology and manage reserves to achieve steady development.

These suggestions are easy to say but difficult to do, and require joint efforts from the government to the enterprise. There is a saying that if you feel that your life is very comfortable every day, you will get more and more difficult; but if you feel that every day is hard, you will get better and better. This sentence now seems very reasonable.