Analysis of advantages of gypsum-based self-leveling mortar
Self-leveling gypsum is the abbreviation of self-leveling ground leveling gypsum, also known as gypsum-based self-leveling mortar. It is a kind of gypsum material, special aggregates and a variety of construction chemical additives prepared in the factory and mixed evenly. It is specially used for the ground. Leveled dry powder mortar.
Self-leveling mortar is an ideal material for accurate ground leveling of buildings. It can be used as a bedding base for various types of ground decoration materials, and can also be directly used as a surface floor.
It originated in Europe in the 1960s. In the European market, gypsum-based self-leveling mortar occupies a large portion of the floor mortar; the main cementitious material of gypsum-based self-leveling mortar is gypsum, and has the performance of automatic leveling, with many advantage:
Energy saving and sound insulation
It is used as a “floor heating” leveling cover layer with good thermal insulation performance (the energy saving range of floor heating is about 20% compared with other heating methods, such as the use of zoned temperature control devices, the energy saving range can be as high as 40%); it will not be like the cement mortar layer , Cracking and bulging due to thermal expansion and contraction;
In addition, the gypsum-based self-leveling mortar hardened floor has a certain elasticity, warm and comfortable feet; and has a certain sound insulation effect.
Good shrinkage and heat resistance
Gypsum-based self-leveling mortar is superior to traditional cement mortar in terms of strength stability and thermal stability, and is the preferred material for floor heating systems.
Under the same conditions, the shrinkage of cement-based self-leveling mortar is much higher than that of gypsum-based self-leveling mortar. By 28 days, the shrinkage of cement-based self-leveling mortar is about 1.17 mm/m.
With the extension of time, the shrinkage value of cement-based self-leveling mortar reaches about 1.3 mm/m after 90 days, but the shrinkage value of gypsum-based self-leveling mortar remains at about 0.19 mm/m, that is, in cement-based self-flow The excessively high shrinkage value in the flat mortar is most likely to cause the self-leveling mortar to crack.
High temperature resistance
The heat resistance of gypsum-based self-leveling at 50 ℃ is basically stable, and the shrinkage values, flexural and compressive strengths of 28d and 194d are almost the same.
Environmental protection, anti-noise
As a floor heating system, the porosity of the gypsum material itself can play a role in sound insulation and heat preservation. Gypsum-based self-leveling mortar has low density, which can reduce the bearing quality of buildings, and does not contain harmful substances such as formaldehyde, casein, VOC, and no ammonia gas release. It has significantly improved the environmental protection standards of the entire decoration, and is a green and environmentally friendly energy-saving type. product.
The self-leveling construction process is low-noise, without knocking nails or using electric tools, without sanding, and avoiding the generation of dust. Self-leveling also provides a comfortable and quiet use environment, avoiding the noisy sound of footsteps due to the uneven ground and the gap left by the keel.
Easy construction
The ground constructed with gypsum-based self-leveling mortar has accurate size, extremely high level, no hollowing, and no cracking; it is easy and convenient to operate, high efficiency, and short time-consuming (only one day can be used, and the decoration period is shortened) ; And can use pumping construction, the daily paved ground can reach 800~1000㎡, 5-10 times faster than the traditional ground material construction speed.
In the process of use, self-leveling supporting installation is adopted, which can easily meet the requirements of floor installation. It can provide a stable base surface, and the life of the base surface can reach at least 50 years;
The leveling accuracy of the ground is provided so that the joints are in the same plane after the floor is installed and installed, thereby protecting the surface material above and extending the service life of the floor material.
Beauty
The self-leveling ground leveling effect is very obvious, which makes the floor paved on the self-leveling surface more beautiful. The flat base ensures that the floor can achieve a mirror-like effect and a perfect visual enjoyment; because the new floor paving does not hit the keel The installation process method makes your indoor space more about 45mm in height, the height of the keel is about 50mm, and the self-leveling only needs about 5mm, the space is more open.
As a new material in the national green building materials industry, we always insist on selecting high-quality auxiliary materials with high quality, good performance, environmental protection and economic benefits. Gypsum-based self-leveling mortar is one of them.
It is used as a “floor heating” leveling cover layer with good thermal insulation performance (the energy saving range of floor heating is about 20% compared with other heating methods, such as the use of zoned temperature control devices, the energy saving range can be as high as 40%); it will not be like the cement mortar layer , Cracking and bulging due to thermal expansion and contraction; in addition, the gypsum-based self-leveling mortar hardened floor has a certain elasticity, warm and comfortable feet; and has a certain sound insulation effect. Gypsum-based self-leveling mortar is superior to traditional cement mortar in terms of strength stability and thermal stability, and is the preferred material for floor heating systems.
Under the same conditions, the shrinkage of cement-based self-leveling mortar is much higher than that of gypsum-based self-leveling mortar. By 28 days, the shrinkage of cement-based self-leveling mortar is about 1.17 mm/m. With the extension of time, the shrinkage value of cement-based self-leveling mortar reaches about 1.3 mm/m after 90 days, but the shrinkage value of gypsum-based self-leveling mortar remains at about 0.19 mm/m, that is, in cement-based self-flow The excessively high shrinkage value in the flat mortar is most likely to cause the self-leveling mortar to crack. The heat resistance of gypsum-based self-leveling at 50 ℃ is basically stable, and the shrinkage values, flexural and compressive strengths of 28d and 194d are almost the same.
The porosity of the gypsum material itself can play the role of sound insulation and heat preservation. Gypsum-based self-leveling mortar has low density, which can reduce the bearing quality of buildings, and does not contain harmful substances such as formaldehyde, casein, VOC, and no ammonia gas release. It has significantly improved the environmental protection standards of the entire decoration, and is a green and environmentally friendly energy-saving type. product. Gypsum-based self-leveling mortar, as a ground leveling layer, has advantages unmatched by other materials. It is an important product to replace cement and reduce carbon emissions, and has social and economic benefits of energy saving and emission reduction.
The ground constructed with gypsum-based self-leveling mortar has accurate size, extremely high level, no hollowing, and no cracking; it is easy and convenient to operate, high efficiency, and short time-consuming (only one day can be used, and the decoration period is shortened) ; And can use pumping construction, 5-10 times faster than traditional ground material construction speed. The new floor paving process method reduces the thickness and makes your indoor space more open.
In the process of use, the self-leveling supporting installation is easy to meet the requirements of floor installation. It can provide a stable base surface, and the life of the base surface can reach at least 50 years; provide the leveling accuracy of the ground to allow the floor to be installed after installation The seams are in the same plane, thus protecting the surface material above and extending the service life of the floor material.
