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Waterproof organic grouting material for repairing semi-rigid base course cracks and preparing method thereof

A technology of semi-rigid base and grouting materials, applied in the direction of adhesive types, polyurea/polyurethane adhesives, adhesive additives, etc., can solve the problem of low compressive strength of polymers, slow curing time of single-component polyurethane, Can not be repaired and other problems, to achieve the effect of improving the degree of molecular cross-linking, improving water sensitivity, and good water damage resistance

Inactive Publication Date: 2019-04-16
JIANGSU SINOROAD ENG TECH RES INST CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the currently commonly used organic grouting material--epoxy resin has problems such as high hardness, brittleness, and inability to repair. Silicone rubber has obvious deficiencies in stretching and stretching properties. Although single-component polyurethane is easy to use, However, in terms of performance, there is still a certain gap compared with two-component polyurethane materials. At the same time, due to the slow curing time of single-component polyurethane materials, it will affect the opening of traffic on the repaired road section.
However, the two-component organic grouting materials currently on the market are very sensitive to the humidity in the environment. When the water content of the base layer is high, the consolidated polymer has low compressive strength and is easy to pulverize, resulting in poor repair effect. ideal

Method used

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  • Waterproof organic grouting material for repairing semi-rigid base course cracks and preparing method thereof
  • Waterproof organic grouting material for repairing semi-rigid base course cracks and preparing method thereof
  • Waterproof organic grouting material for repairing semi-rigid base course cracks and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: A water-resistant organic grouting material for repairing semi-rigid base cracks and its preparation method

[0033] A water-resistant organic grouting material used for repairing cracks in semi-rigid bases, calculated in parts by mass, includes component A and component B, component A is 64 parts of rigid foam polyol and 23 parts of CASE polyol, 5 parts of lithium chloride, 4 parts of polypropylene glycol, 1 part of A-33L gel catalyst, 2 parts of A-1 starter catalyst, 0.5 parts of DEOA crosslinking agent, DF-853 high carbon alcohol ether emulsion type non-silicon defoaming Agent 0.5 parts; B component is 65 parts of PAPI-2 type isocyanate.

[0034] Its preparation method is as follows:

[0035] S1. Mix and stir the above components A for 1-2 hours to obtain mixture a;

[0036] S2. Add the above component B into the mixture a and mix evenly to obtain a water-resistant organic grouting material for repairing cracks in the semi-rigid base.

[0037] The basic...

Embodiment 2

[0040] Example 2: A water-resistant organic grouting material for repairing semi-rigid base cracks and its preparation method

[0041] A water-resistant organic grouting material used for repairing cracks in semi-rigid bases, calculated in parts by mass, includes components A and B, and component A is 57 parts of rigid foam polyol and 19 parts of CASE polyol, 10 parts of lithium bromide, 8 parts of polytetramethylene glycol, 2 parts of A-33E gel catalyst, 2 parts of NE-210 initiation catalyst, 1 part of TEOA crosslinking agent, DF-8531 high carbon alcohol ether emulsion type non-silicon defoaming agent 1 part of agent; B component is 100 parts of PAPI-2 type isocyanate.

[0042] Its preparation method is as follows:

[0043] S1. Mix and stir the above components A for 1-2 hours to obtain mixture a;

[0044] S2. Add the above component B into the mixture a and mix evenly to obtain a water-resistant organic grouting material for repairing cracks in the semi-rigid base.

[004...

Embodiment 3

[0048] Example 3. A water-resistant organic grouting material for repairing semi-rigid base cracks and its preparation method

[0049] A water-resistant organic grouting material used for repairing cracks in semi-rigid bases, calculated in parts by mass, includes components A and B, component A is 61 parts of rigid foam polyol and 21 parts of CASE polyol, 3 parts of calcium chloride, 3 parts of lithium bromide, 6 parts of polytetramethylene glycol, 2 parts of NE-1070 gel catalyst, 2 parts of BL-11 starting catalyst, 0.5 parts of NGK crosslinking agent, 0.5 parts of 1,4-BG Cross-linking agent, 1 part of DF-8531 high carbon alcohol ether emulsion type non-silicon defoamer; B component is 80 parts of PAPI-2 type isocyanate.

[0050] Its preparation method is as follows:

[0051] S1. Mix and stir the above components A for 1-2 hours to obtain mixture a;

[0052] S2. Add the above component B into the mixture a and mix evenly to obtain a water-resistant organic grouting material ...

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PUM

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Abstract

The invention discloses an organic grouting material, belongs to the technical field of road repairing, and aims at providing a waterproof organic grouting material for repairing semi-rigid base course cracks. The waterproof organic grouting material is prepared from an A component and a B component. The A component is prepared from a composite polyol, a moisture absorbent, a toughening agent, a catalyst, an antifoaming agent and a cross-linking agent. The B component is prepared from PAPI-2-type isocyanate. The composite polyol is a mixture of a hard-bubble polyol and a CASE-type polyol. Thewaterproof organic grouting material for repairing the semi-rigid base course cracks has the good water damage resistance, flowability, permeability, flexibility, durability and excellent mechanical performance, the semi-rigid base course cracks can be repaired, roads can be rapidly developed, and the influences of pavement construction on public travel can be lowered.

Description

technical field [0001] The invention relates to the technical field of road repair, in particular to a water-resistant organic grouting material for repairing cracks in a semi-rigid base. Background technique [0002] In the treatment of diseases such as highways, railways, road-bridge transition zones, etc., grouting reinforcement technology has been widely used and achieved good results. The grouting material is an indispensable key component in the grouting technology. The performance and variety of the grouting material directly affect the quality and cost of the project. [0003] However, the currently commonly used organic grouting material--epoxy resin has problems such as high hardness, brittleness, and inability to repair. Silicone rubber has obvious deficiencies in stretching and stretching properties. Although single-component polyurethane is easy to use, However, in terms of performance, there is still a certain gap compared with two-component polyurethane mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/32C09J175/08C09J11/06
CPCC08G18/3206C08G18/4804C08G18/4825C08G18/6674C08G18/7664C09J11/06C09J175/08
Inventor 金光来祝争艳李英涛周文李洪刚江瑞龄詹从明
Owner JIANGSU SINOROAD ENG TECH RES INST CO LTD
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