AB type dry mixed composite lightweight aggregate concrete manufacturer

AB type dry mixed composite lightweight aggregate concrete manufacturerAB type dry mixed composite lightweight aggregate concrete manufacturer

Lightweight aggregate concrete has the characteristics of light weight, good thermal insulation and fire resistance. The compressive strength of structural lightweight aggregate concrete can reach up to 70 megapascals, which can reduce its own weight by more than 20-30% compared to ordinary concrete of the same grade. Structural insulation dry mixed composite lightweight aggregate concrete is a wall material with good insulation performance, with a thermal conductivity of 0.233-0.523 watts/(m * kai), which is only 12-33% of ordinary concrete. Lightweight aggregate concrete has good deformation performance and low elastic modulus. In general, shrinkage and creep are also significant. The elastic modulus of lightweight aggregate concrete is directly proportional to its bulk density and strength. The smaller the bulk density and strength, the lower the elastic modulus. Compared with ordinary concrete of the same grade, the elastic modulus of lightweight aggregate concrete is about 25-65% lower.

Lightweight aggregate concrete is widely used in industrial and civil buildings, as well as other engineering projects, which can reduce the structural weight; Improve the seismic performance of the structure; Save material usage; Improve the efficiency of component transportation and lifting; Benefits such as reducing foundation loads and improving building functions (insulation, fire resistance, etc.). Therefore, in the 1960s and 1970s, the production and application technology of lightweight aggregate concrete developed rapidly, mainly in the direction of lightweight and high strength, and was widely used in high-rise, large-span structures and enclosure structures, especially in the production of small hollow blocks for walls. China has been developing lightweight aggregate and lightweight aggregate concrete since the 1950s, mainly used for large exterior wall panels and small hollow blocks in industrial and civil buildings, with a small amount used for load-bearing structures and thermal structures in high-rise and bridge buildings.