Excellent heat preservation, heat insulation, and sound insulation performance: its thermal conductivity can meet the heat insulation and sound insulation requirements of building exterior walls and household walls. It is composed of polystyrene foam board with low thermal conductivity and a high-strength concrete structure layer, which has a high thermal resistance and low thermal conductivity.
A double-layer effect is used for solar thermal radiation: the first is the mirror effect, which uses a mirror agent (or brightener) to reflect the thermal radiation brought by the sun. The second is the white effect. The surface layer is white and has a certain reflection effect on sunlight. The heat absorption power is low. The dual effects are synergistically superimposed, which overcomes the shortcomings of the single effect, and can play an ideal reflection effect on solar heat radiation. It reaches more than 90%, and the thermal insulation performance fully meets the requirements of the "Guangdong Province Residential Building Energy-saving Design Standard".
Introduction to the advantages and disadvantages of foam bricks for exterior walls
advantage:
1. Lightweight, reducing the load of the building: dry density is 300-1200kg/m³; which is 1/5-1/8 of ordinary concrete.
2. Excellent heat preservation, heat insulation, and sound insulation performance: its thermal conductivity is 0.08-0.16w/m.k, and the sound insulation of 24cm wall is 60dB, which meets the requirements of heat insulation and sound insulation of building exterior walls and household walls.
3. Good compressive performance: the compressive strength is greater than 0.5Mpa, and the highest strength can reach more than 10.5Mpa.
4. Good seismic resistance: Because the foam brick is a porous material, it has a low elastic modulus, so that it has a good absorption and dispersion effect on shock and shock loads. At the same time, the weight of the foam brick is relatively light, which effectively reduces the load on the building. The smaller the object's load, the stronger the earthquake resistance.
5. No cracking and long service life: The foam brick will not crack and be hollow, and there is no need to brush the interface agent during use, with outstanding anti-aging performance and long service life.
6. Good water resistance: the water absorption rate of foam brick material is lower than 22%, which is obviously different from other wall materials.
shortcoming:
1. Foam bricks are light in weight, which makes them have certain defects. Because of their lightweight, foam bricks are not suitable for building load-bearing walls.
2. The density of foam bricks is low. Using nails or expansion screws on the walls of its masonry will easily loosen, which will also cause safety hazards. Therefore, if nails or expansion screws are needed for external walls, it is not recommended Use foam bricks to build the walls.