Thermal insulation polyurethane foam dry mixed composite lightweight aggregate concrete

Thermal insulation polyurethane foam dry mixed composite lightweight aggregate concreteThermal insulation polyurethane foam dry mixed composite lightweight aggregate concrete

Its bulk density is less than 800 kg/cubic meter, and its compressive strength is less than5.0 megapascals, mainly used for insulation enclosure structures and thermal structures. Structural insulationLightweight aggregate concreteIts bulk density is 800~1400 kg/cubic meter, and its compressive strength is 5.0~2.0 megapascals. It is mainly used for reinforced and non reinforced enclosure structures. Structural lightweight aggregate concrete. Its bulk density is 1400~1800 kg/cubic meter, with compressive strengthThe temperature ranges from 15.0 to 50.0 megapascals and is mainly used for load-bearing components, prestressed components, or structures.

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.

1. Combustion performance A2 level: The fire resistance reaches over 1000 ℃ and does not burn at high temperatures.
2. Efficient insulation: The thermal conductivity can reach 0.043W/m.k, and the insulation layer is seamless. Meet the requirement of 75% energy saving.
3. High strength: The compressive strength is greater than 0.69Mpa and can reach up to 20Mpa.
4. Low water absorption rate: ≤ 6%

5. Long lifespan: Same lifespan as the building.
6. Good sound insulation effect: 7cm thick aggregate concrete can effectively reduce noise by 23dB, achieving special grade sound insulation.
7. Good seismic performance: The elastic modulus is only 1% of ordinary concrete.
8. Lightweight: Density grade 215-365kg/m ³, equivalent to only 8-10 times the weight of concrete.