Foamed concrete subgrade embankment backfill

What are the characteristics of lightweight aggregate concrete?

Ignition Characteristics A2 Grade: Resists ignition above 1000°C, will not catch fire at high temperatures.

2. Insulation: Thermal conductivity of at least 0.043 W/m.k, with a seamless insulating layer that meets 75% of environmental protection and energy-saving requirements.

3. High Compressive Strength: Tensile strength exceeds 0.69 Mpa, reaching up to 20 Mpa.

4. Low water absorption rate: ≤6%.

5. Longevity: Same as the lifespan of the building structure.

6. Excellent soundproofing: 7cm thick granular concrete can effectively reduce noise by 23dB, achieving special soundproofing effects.

7. Excellent seismic performance: The elastic mold accounts for only 1% of the cement concrete.

8. Lightweight: With a relative density of 215-365 kg/m³, this concrete boasts light weight, excellent thermal insulation, and fire resistance. The tensile strength of structured lightweight aggregate concrete can reach 70 MPa. Compared to similar cement concrete, it can reduce its own weight by over 20% to 30%.

9. Under normal conditions, there is also significant shrinkage and plastic deformation. There is a positive correlation between the density and compressive strength of the elastic mold for lightweight aggregate concrete. The lower the density, the lower the compressive strength and the elastic modulus, with the elasticity of this concrete being 25-65% lower compared to similar cement types.