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Early strength flexible double-liquid grouting material for expressway subgrade repair and preparation method thereof

A double-liquid grouting and high-speed road technology, which is applied in the field of road engineering, can solve the problems of lack of toughness, low early strength, and poor groutability of the solidified body, and achieve the effects of good durability, good stability, and avoiding waste

Active Publication Date: 2015-11-18
河南万里交通科技集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Commonly used grouting materials are mainly divided into inorganic materials and organic materials. The amount of grout used for the treatment of roadbed voiding is large, while the cost of organic grouting materials is too high; inorganic grouting materials have poor groutability, low early strength, and solidification. The lack of toughness of the body, poor durability under repeated heavy loads, etc.
The grouting materials used for expressway subgrade repair need to have the characteristics of quick setting, early strength, low cost, fatigue resistance, and good durability, but the existing grouting materials are difficult to meet the requirements for expressway subgrade repair at the same time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Early-strength flexible two-component grouting material for expressway subgrade repair, including A component and B component, A component includes sulfoaluminate cement clinker 75kg, quartz powder 15.5kg, water reducing agent 0.5kg, early strength agent 2kg, 1kg of suspending agent and 6kg of composite chain extender, wherein the composite chain extender is composed of glucose, sodium polyaspartate and triethanolamine in a weight ratio of 3:1:1; component B includes 50kg of gypsum, 15kg of quicklime, 20kg of quartz powder, 2kg of suspending agent and 13kg of polyester, wherein the polyester is prepared by adding a catalyst in a reactor to react polyisocyanate with dehydrated hydroxyl-terminated liquid polybutadiene and polyoxypropylene diol; the water reducer is At least one of polycarboxylate water reducer or naphthalene-based water reducer; suspending agent is at least one of bentonite or cellulose sodium; early strength agent is at least one of triethanolamine, lithi...

Embodiment 2

[0021] Early-strength flexible double-liquid grouting material for expressway subgrade repair, including A component and B component, A component includes 72.2kg of sulphoaluminate cement clinker, 19kg of quartz powder, 0.8kg of water reducing agent, early strength agent 1kg, 2kg of suspending agent and 5kg of composite chain extender, wherein the composite chain extender is composed of glucose, sodium polyaspartate and triethanolamine in a weight ratio of 3:1:1; component B includes 43kg of gypsum, 17kg of quicklime, 22kg of quartz powder, 3kg of suspending agent and 15kg of polyester, wherein the polyester is prepared by adding a catalyst in a reactor to react polyisocyanate with dehydrated hydroxyl-terminated liquid polybutadiene and polyoxypropylene diol; the water reducer is At least one of polycarboxylate water reducer or naphthalene-based water reducer; suspending agent is at least one of bentonite or cellulose sodium; early strength agent is at least one of triethanolam...

Embodiment 3

[0029] Early-strength flexible two-component grouting material for highway subgrade repair, including A component and B component, A component includes sulfoaluminate cement clinker 80kg, quartz powder 12.4kg, water reducing agent 0.6kg, early strength agent 2kg, 1kg of suspending agent and 4kg of composite chain extender, wherein the composite chain extender is composed of glucose, sodium polyaspartate and triethanolamine in a weight ratio of 3:1:1; component B includes 65kg of gypsum, 10kg of quicklime, 12kg of quartz powder, 3kg of suspending agent and 10kg of polyester, wherein the polyester is prepared by adding a catalyst in a reactor to react polyisocyanate with dehydrated hydroxyl-terminated liquid polybutadiene and polyoxypropylene diol; the water reducer is At least one of polycarboxylate water reducer or naphthalene-based water reducer; suspending agent is at least one of bentonite or cellulose sodium; early strength agent is at least one of triethanolamine, lithium ...

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Abstract

The invention relates to the technical field of road engineering, in particular to an early strength flexible double-liquid grouting material for expressway subgrade repair. The grouting material includes a component A and a component B. The component A comprises the following components by weight: 72.2-80 parts of a sulphate aluminium cement clinker, 12.4-19 parts of quartz powder, 0.5-0.8 part of a water reducing agent, 1-2 parts of an early strength agent, 1-2 parts of a suspending agent, and 4-6 parts of a composite chain extender. The component B comprises the following components by weight: 43-65 parts of gypsum, 10-17 parts of quicklime, 12-22 parts of quartz powder, 2-3 parts of a suspending agent and 10-15 parts of polyester. The grouting material provided by the invention has good slurry stability, low viscosity and long operable time, can reach final setting 10 minutes after mixing, and has the 1h compressive strength above 15Mpa. The concretion body has certain toughness and good durability, is non-cracking and non-chalking. Therefore, the early strength flexible double-liquid grouting material is suitable for expressway subgrade repair and large crack repair.

Description

technical field [0001] The invention relates to the technical field of road engineering, in particular to an early-strength flexible two-liquid grouting material used for expressway subgrade repair and a preparation method thereof. Background technique [0002] In recent years, the transportation industry has developed rapidly. At the end of 2014, the total mileage of expressways in my country reached 112,000 kilometers. With the increase of the vehicle load and the increase of the service life of the expressway, the damage of the expressway is serious, the road surface sinks, and there is a void area between the panel and the base cushion, which seriously affects the traffic safety. In order to prolong the service life of the road and ensure the normal traffic capacity of the road, the method of grouting is usually used for treatment. Commonly used grouting materials are mainly divided into inorganic materials and organic materials. The amount of grout used for the treatme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B24/28C04B111/72
Inventor 刘澜波杨政鹏杨兴旺祝晓磊秦鹏举耿继光姚婉瑕高月芳李蕊何伟娜宋俊伟杨领兵李慧张征高宇牛凯杰缑字勇魏俊杰郭培源沈军伟张文涛
Owner 河南万里交通科技集团股份有限公司
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