Polyurethane gravel pile and construction technology and application thereof

Polyurethane gravel pile and construction technology and application thereof

  • CN 103,669,340 A
  • Filed: 12/06/2013
  • Published: 03/26/2014
  • Est. Priority Date: 12/06/2013
  • Status: Active Application
First Claim
Patent Images

1. a polyurethane sand-gravel pile, be arranged vertically in the ground (70) in project site, containing sandstone aggregate (10) and adhesive material, sandstone aggregate (10) is graded broken stone, piece stone, cobble, dust, circle gravel, medium sand, coarse sand, one of building waste or compound of being formed by them, in the stake hole (80) becoming, fill sandstone aggregate (10) in ground (70), form pile body, in the hole of the sandstone aggregate (10) of the pile body described in described adhesive material is embedded in, it is characterized in that, described adhesive material is polyurethane foam (20), polyurethane foam (20) is the polymeric resin that contains repetition-HNCO-O-group on main chain, density and the compressive strength of polyurethane foam (20) are respectively 100kg/m 3

  • 500kg/m 3and 0.1MPa~

    50MPa, the described stake of the cementing formation waist drum of sandstone aggregate (10) shape in polyurethane foam (20) and described pile body, average diameter, length, density, compressive strength and the modulus of elasticity of described are respectively 20cm~

    200cm, 2m~

    25m, 500kg/m 3

    2500kg/m 3, 1.0MPa~

    100.0MPa and 10MPa~


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