The application of foam concrete in pit backfill of subway station

Because of the complexity of foundation construction in subway station, meanwhile, with the development of high-rise buildings and underground space, crowded buildings, complex pipeline and narrow spaces set a higher demand of technology to pit backfill of subway station.

traditional handicraft of backfill can easily cause uncompacted backfill or slope collapse, which is seriously affected driving safety and service life of subway. Foam concrete is lightweight and high strength, because of the self-compacting ability, it can solve above problem very well. Meanwhile, foam concrete can effectively reduce the sedimentation and cavity caused by groundwater corrosion.