AAC Block Advantages:
1. Lightweight: Porosity achieve 70% to 85%, volume density is generally 500-900kg/m3, as 1/5 of general concrete brick, the 1/4of clay brick, the 1/3 of hollow brick, and similar with wood can float in water. It can reduce building weight, reduction in the cost of integrated building, moreover, prolong building's life.
2. Fireproof: Most of the major raw materials is inorganic materials, so it has good fire resistance, and do not emit harmful gases when meet fire. Fire 650 degrees, as a refractory material, the thick up of 100 mm walls can reach to 4 hours fire resistance, 300mm thick up wall can reach to 9 hours fire resistance.
3. Sound insulation: Due to a unique porous structure, so it has a sound absorption capacity. The sound absorption capacity can reach of 100mm thick wall up to 41 db.
4. Insulation: As the material inside has a large numbers of the pores and porous, which has a good thermal insulation properties. The Thermal conductivity is 0.11-0.16W/MK, as 1/4-1/5 of brick. Typically, the insulation effect of 20cm thick aerated concrete wall is equivalent to 49cm thick solid brick walls ordinary.
5. Permeability: Result of material by the composition of many independent small pores, the moisture absorption is slow, in the volume of absorbent is 5 times of clay saturation do. When used in the bathroom, the wall can be treated to interface directly paste tiles.
6. Anti-seismic: The same building structure, improve the two seismic than the brick level.
7. Green: Manufacturing, transportation, all use the process of non-pollution, to protect arable land, saving energy, is one kind of a green building material.
8. Durability: Material strength is stable, in the specimens tested after one year of atmospheric exposure; The intensity increased by 25%, and remained stable even after ten years.
9. High workability: It has good machinability, can be sawed, planed, drilled, nailed, and available appropriate as bonding of adhesive material, so create favorable conditions for building construction.
10. Economies: An integrated lower cost than using more than 5% of solid clay bricks, and can increase the usable area, greatly enhance the utilization of floor space.
The raw material proportion:
Parameter Name |
Parameter Value |
| Fly ash |
65-70% |
| cement |
6-15% |
| lime |
18-25% |
| gypsum |
3-5% |
| Aluminum powder paste |
8 |
| Water & material rate |
0.60-0.65 |
| Casting temperature |
36-40°C |
| Aluminum mixing time |
30-40s |
| Parameter Name |
Parameter Value |
| Sand |
55-65% |
| Cement |
10-20% |
| Lime |
20-30% |
| Gypsum |
2-3% |
| Aluminum powder paste |
8 |
| Water & material rate |
0.65-0.75 |
| Casting temperature |
35-38°C |
| Aluminum mixing time |
30-40s |
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