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Grouting reinforcement material for treating road diseases and preparation method thereof

A technology for grouting reinforcement and road disease, which is applied in the field of grouting reinforcement materials. The preparation of this material can solve the problems of easy dispersion of grout, slow strength formation, and long setting time, so as to achieve accelerated coagulation and formation of strength and good dispersion resistance properties, the effect of improving early strength

Active Publication Date: 2021-07-13
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent CN 106587784 discloses a method for preparing double-liquid grouting materials with blast furnace slag powder as the main raw material, but the setting time is too long (more than 3 hours for initial setting), and the strength formation is slow; Chinese invention patent CN 106145798 records A method for preparing a fast-setting two-liquid grouting material with mineral powder and red mud as raw materials, but when this grouting material is used in a hollow base or a weak roadbed rich in open water, the grout is easy to disperse and the setting time is short. Tens of minutes to several hours are extended to varying degrees, and it is not easy to control, the strength is formed slowly, and the traffic cannot be opened quickly, which affects the effect of grouting reinforcement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1 Preparation of grouting reinforcement materials for treating road diseases

[0030] 1. Prepare materials

[0031] 100 parts of S95 slag powder, 40 parts of C-grade fly ash, 20 parts of rapid hardening sulfoaluminate cement, 30 parts of fine sand, 0.2 parts of 6mm polypropylene fiber, 1.6 parts of naphthalene-based superplasticizer, 3 parts of lithium carbonate, 2 parts of tartaric acid, 80 parts of water; 100 parts of sodium water glass with modulus 1.2 (solid content 42%), 2 parts of polyacrylamide flocculant;

[0032] 2. Preparation method

[0033] 1) First, add S95 slag powder, C-grade fly ash and rapid-hardening sulphoaluminate cement into the grouting mixer, and then add fine sand, naphthalene-based high-efficiency water reducer, lithium carbonate, tartaric acid and water Add it in order, and stir for 8 minutes at a speed of 50-100r / min; finally add 6mm polypropylene fibers, and stir for 8 minutes at a speed of 300-500r / min to obtain component A;

[00...

Embodiment 2

[0037] Example 2 Preparation of grouting reinforcement materials for treating road diseases

[0038] 1. Prepare materials

[0039] 100 parts of S95 slag powder, 100 parts of C grade fly ash, 40 parts of fast hardening sulfoaluminate cement, 50 parts of fine sand, 0.4 part of 6mm polypropylene fiber, 2.5 parts of naphthalene series superplasticizer, 4 parts of lithium carbonate, 4 parts of tartaric acid, 120 parts of water; 100 parts of sodium water glass with modulus 1.0 (solid content 40%), 4 parts of polyacrylamide flocculant;

[0040] 2. Preparation method

[0041] With embodiment 1.

[0042] In practical application, component A and component B can be pumped separately through a grouting pump, and then mixed at a volume ratio of 2:1 through a three-way pipe and then injected into the empty base of the road; the setting time of the mixed grouting material is 11min, 12h compressive strength is 11.7MPa.

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Abstract

The invention discloses a grouting reinforcement material for treating road diseases, which is formed by mixing component A and component B at a volume ratio of 2:1: component A consists of 20-120 parts of slag powder, fly ash 12~110 parts, cement 12~44 parts, fine sand 12~110 parts, fiber 0.15~0.5 parts, water reducing agent 1.2~4.5 parts, early strength agent 2~6 parts, retarder 1~4 parts, water 50 parts ~130 parts are prepared; component B is prepared by alkaline activator and flocculant at a ratio of 100:1~6. The present invention adds a flocculant to the alkali activator, so that the slurry has good anti-dispersion performance in the water-rich empty base and weak roadbed, and can quickly coagulate and form strength. Insufficient strength formation is slow; adding fine sand to the grouting material will help improve the flocculation effect of the flocculant, accelerate the coagulation of the grout and form strength; adding a small amount of fast sand to the grouting material Hard cement can further accelerate the setting of the mixed slurry and improve the early strength.

Description

technical field [0001] The invention relates to a construction material for treating road diseases, in particular to a grouting reinforcement material for treating road diseases, and also relates to a preparation method of the material. Background technique [0002] Under the comprehensive action of traffic load and complex natural environment, the road will suffer from the erosion of the base layer, the subsidence of the subgrade wet and soft, and the lack of local strength. At present, the commonly used treatment and maintenance technologies for these diseases in actual engineering mainly include various thin-layer overlay treatments, excavation and resurfacing, and grouting reinforcement. Among them, grouting reinforcement has become an important way to treat the above diseases due to the advantages of simple process, low cost, and fast open traffic, and the grouting material is the key factor affecting the effect of grouting reinforcement. At present, the commonly used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/06
CPCC04B28/06C04B2111/0075C04B2111/70C04B18/141C04B18/08C04B16/0633C04B14/06C04B2103/302C04B22/10C04B24/06C04B24/2652C04B12/04
Inventor 王笑风杨博刘建飞殷卫永李豪阴麒麟胡光胜冯明林田延峰郭霄
Owner HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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