Semi-rigid base crack trenchless grouting repair material and preparation method thereof

A semi-rigid base and repair material technology, which is applied in the field of semi-rigid base crack trenchless grouting repair material and its preparation, can solve the problem that the treatment effect of reflective cracks is not ideal, cannot play the role of structural reinforcement, and the slurry It is difficult to inject small gaps and other problems, so as to improve the late shrinkage problem, improve the flexibility and tensile elongation, and reduce the content
CN112679157AInactive Publication Date: 2021-04-20JIANGSU CHANGLU ENERGY TECH DEV CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU CHANGLU ENERGY TECH DEV CO LTD
Publication Date
2021-04-20
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The invention relates to a semi-rigid base crack trenchless grouting repair material and a preparation method thereof. The semi-rigid base crack trenchless grouting repair material comprises the following components in parts by weight: 70-100 parts of a two-component polyurethane prepolymer, 10-15 parts of diatomite powder, 150-200 parts of cement, 60-80 parts of water and 1.0-2.0 parts of a retarder. The diatomite, the cement and the polyurethane form a network interpenetrating multi-element composite structure, so that the compactness and the bonding strength of the splicing interface part of the new pavement base layer and the old pavement base layer are favorably improved. The activity of the diatomite can be excited after calcination and ball milling, the average particle size of the calcined and ball-milled diatomite becomes smaller, the particle size distribution is wide, the specific surface area becomes larger, the faster the reaction speed with calcium hydroxide in cement paste is, the more hydration products in unit time are, and the quantity of hydrated calcium silicate in cement paste is increased. The calcium-silicon ratio and the content of calcium hydroxide are reduced, and the strength of cement is improved.
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Description

technical field

[0001] The invention belongs to a grouting material for roadbed and pavement repair, in particular to a non-excavation grouting repairing material for semi-rigid base cracks and a preparation method thereof. Background technique

[0002] Highway disease refers to the phenomenon of cracks, potholes, looseness, hugging, etc. on the road surface under the combined action of driving and natural factors after the road is completed and put into use. Among them, crack diseases are the main ones. Taking Jiangsu Province as an example, crack diseases account for 75% to 95% of highway diseases, and crack diseases are mainly reflective cracks in semi-rigid bases, accounting for 90%. %~95%.

[0003] At present, the treatment methods for reflective cracks in semi-rigid base mainly include: overlay treatment, excavation and repair, and grouting reinforcement. It is widely used in the repair of cracks. The method is to use air pressure or hydraulic pressure to inject gro...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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