Permeation cementation type polyurethane grouting material for soil body seepage prevention and reinforcement

A grouting material, polyurethane technology, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as poor permeability, high viscosity of infiltrating material, and poor soil consolidation effect.

Active Publication Date: 2020-10-23
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of high viscosity, poor permeability, and poor soil consolidation effect of the existing penetrating materials, the present invention provides a permeable cementing polyurethane grouting material for soil anti-seepage and reinforcement

Method used

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  • Permeation cementation type polyurethane grouting material for soil body seepage prevention and reinforcement
  • Permeation cementation type polyurethane grouting material for soil body seepage prevention and reinforcement
  • Permeation cementation type polyurethane grouting material for soil body seepage prevention and reinforcement

Examples

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Effect test

Embodiment 1

[0029] The invention discloses a permeable cementing type polyurethane grouting material used for anti-seepage and reinforcement of soil, which consists of component A and component B. Component A, in parts by weight, includes:

[0030] Hydrophilic low viscosity polyether polyol: 45 parts;

[0031] Osmotic diluent (dichloromethane and dimethyl carbonate mass ratio is 1:4): 53 parts

[0032] Surfactant (polyol type nonionic surfactant, Aladdin's reagent): 1 part;

[0033] Catalyst (dimethyl benzyl amine, Sinopharm reagent): 0.4 parts;

[0034] Catalyst (diethylenetriamine, Sinopharm Reagent): 0.6 parts;

[0035] Component B: in parts by weight, comprising: PB-1080 (Wanhua Chemical Group Co., Ltd.): 60 copies;

[0036] Osmotic diluent (dichloromethane and dimethyl carbonate mass ratio is 1:4): 20 parts

[0037] Flame retardant (tris(1-chloro-2-propyl) phosphate): 20 parts.

[0038] Preparation process: at room temperature (25°C), weigh each raw material in component A and ...

Embodiment 2

[0040] The invention discloses a permeable cementing type polyurethane grouting material used for anti-seepage and reinforcement of soil, which consists of component A and component B. Component A, in parts by weight, includes:

[0041] Hydrophilic low viscosity polyether polyol: 60 parts;

[0042] Osmotic diluent (dichloromethane and dimethyl carbonate mass ratio is 1:5): 36 parts

[0043] Surfactant (polyoxyethylene type nonionic surfactant, Aladdin's reagent): 2 parts;

[0044] Catalyst (triethylamine, Sinopharm reagent): 1 part;

[0045] Catalyst (diethylenetriamine, Sinopharm reagent): 1 part;

[0046] Component B: in parts by weight, including PB-1080 (Wanhua Chemical Group Co., Ltd.): 70 copies;

[0047] Osmotic diluent (dichloromethane and dimethyl carbonate mass ratio is 1:5): 15 parts

[0048] Flame retardant (tris(1-chloro-2-propyl) phosphate): 15 parts.

[0049] The preparation method is the same as in Example 1.

Embodiment 3

[0051] The invention discloses a permeable cementing type polyurethane grouting material used for anti-seepage and reinforcement of soil, which consists of component A and component B. Component A, in parts by weight, includes:

[0052] Hydrophilic low viscosity polyether polyol: 37 parts;

[0053] Osmotic diluent (dichloromethane and dimethyl carbonate mass ratio is 1:6): 59 parts

[0054] Surfactant (polyoxyethylene type nonionic surfactant, Aladdin's reagent): 2 parts;

[0055] Catalyst (triethylamine, Sinopharm reagent): 0.5 parts;

[0056] Catalyst (diethylenetriamine, Sinopharm reagent): 1.5 parts;

[0057] Component B, in parts by weight, includes: PB-1080 (Wanhua Chemical Group Co., Ltd.): 70 copies;

[0058] Osmotic diluent (dichloromethane and dimethyl carbonate mass ratio is 1:6): 25 parts

[0059] Flame retardant (tris(1-chloro-2-propyl) phosphate): 20 parts.

[0060] The preparation method is the same as in Example 1.

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Abstract

The invention belongs to the technical field of grouting materials, and specifically relates to a permeation cementation type polyurethane grouting material for soil body seepage prevention and reinforcement. The permeation cementation type polyurethane grouting material is prepared from a component A and a component B. The component A is prepared from the following raw materials in parts by mass:40 to 60 parts of a hydrophilic low-viscosity polyether polyol, 35 to 55 parts of a permeation diluent, 0.5 to 5 parts of a surfactant and 0.1 to 2 parts of a catalyst. And the component B is prepared from the following raw materials in parts by mass: 50-85 parts of an isocyanate, 5-30 parts of a permeation diluent and 5-35 parts of a flame retardant. The permeation cementation type polyurethanegrouting material has the advantages of low viscosity, strong permeability, high mechanical strength, strong chemical corrosion resistance, good consolidation effect and the like, and completely meetsthe application of soil layer seepage prevention and consolidation.

Description

technical field [0001] The invention belongs to the technical field of grouting materials, and in particular relates to a permeable cementation type polyurethane grouting material used for anti-seepage and reinforcement of soil. Background technique [0002] Traditionally used penetrating materials mainly include methyl methacrylate materials, which have the advantages of low viscosity, good permeability to small cracks, and excellent mechanical strength. The disadvantage is that methyl methacrylates The volume of the material will shrink by nearly 20%, which will cause local voids between the polymer and the seam surface, resulting in a decrease in the overall mechanical properties. The second is urea-formaldehyde resin chemical grouting materials. The advantage is that the material is easy to obtain, the price is low, and it has a certain reinforcing effect on the soil layer. However, the formaldehyde in urea-formaldehyde resin grout has a strong pungent smell, and its con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/50C08K5/521E02D3/12
CPCC08G18/5024C08K5/521E02D3/12
Inventor 郭成超王磊王超杰韩延康赵鹏孙博刘琪赵线峰石明生黄光营
Owner SUN YAT SEN UNIV
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