Ultra-early strong single-component grouting material

A grouting material and one-component technology, applied in the field of grouting materials, can solve the problems of mechanical properties decline of early-strength grouting materials, and achieve the effects of no shrinkage cracking, good durability, and high early and late mechanical properties.

Inactive Publication Date: 2019-03-15
SHANGHAI LIYANG ROAD REINFORCEMENT TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a super-early-strength single-component grouting material, which can greatly improve the early strength of the grouting material while having a long open time, and overcome the late stage of the early-strength type grouting material. Mechanical properties decline and other issues

Method used

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  • Ultra-early strong single-component grouting material
  • Ultra-early strong single-component grouting material
  • Ultra-early strong single-component grouting material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The weight ratio of each component of super early strength single-component grouting material is:

[0025]

Embodiment 2

[0027] The weight ratio of each component of super early strength single-component grouting material is:

[0028]

Embodiment 3

[0030] The weight ratio of each component of the air-entraining expandable geopolymer material is:

[0031]

[0032] The super early strength one-component grouting material prepared by the above embodiment of the present invention has higher early strength and later strength than the existing common grouting materials and grouting materials, no shrinkage cracking, and good durability Corrosive, with excellent durability in a variety of harsh weather environments. Refer to "Technical Conditions for Post-tensioned Prestressed Concrete Beam Pipeline Grouting of Railways" (TB / T 3192), "Technical Regulations for Urban Road Modified Geopolymer Grouting Reinforcement" (DGJ32 / TJ225-2017), "Road Grouting Reinforcement "Technical Regulations" (DG / TJ 08-2240-2017), and other standards were tested, and the physical and chemical properties of the ultra-early strength single-component grouting material of the present invention are compared with ordinary grouting materials as follows:

...

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Abstract

The invention discloses an ultra-early strong single-component grouting material which comprises the following components: aluminate cement, general silica cement, gypsum, superfine slag powder, fly ash, silica fume, a water reducing agent, a retarder, a defoamer, a water-retaining thickener, sodium metasilicate, yellow sand and water. The ultra-early strong single-component grouting material usedfor road grouting reinforcement, provided by the invention, has relatively high early and late mechanical properties and durability, extremely low thermal conductivity coefficient, no shrinkage-cracking, and good acid resistance and water resistance, and is extremely durable in a variety of harsh climates.

Description

technical field [0001] The invention relates to a grouting material, in particular to a super-early-strength single-component grouting material. Background technique [0002] Grouting material refers to the fluid material that is injected into the cracks and holes of formations, rocks or structures under pressure to increase bearing capacity, prevent leakage and improve the overall performance of structures. [0003] Grouting materials have the characteristics of low viscosity, high fluidity, and good permeability. Due to the requirements of construction and grouting equipment and the characteristics of grouting materials, common early-strength grouting materials are mostly two-component organic grouting materials. It needs to be mixed and configured on site. It is difficult to control the two-component ratio and mixing uniformity. After curing, its strength is easy to shrink in the later stage, and the durability of the system is poor; It can be constructed by adding water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B28/16C04B111/20C04B111/70
Inventor 季晓丽李熙
Owner SHANGHAI LIYANG ROAD REINFORCEMENT TECH
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