Grouting material for highways and tunnels and preparation method thereof

Abstract

The invention provides a grouting material for highways and tunnels and a preparation method thereof. The grouting material is prepared from the following raw materials in parts by weight: 45 to 55 parts of powdery master batch, 45 to 55 parts of aggregate, 0.1 to 0.5 part of water reduction agent, 0.02 to 0.06 part of anti-settlement agent, 0.03 to 0.1 part of defoaming agent and 0.10 to 0.50 part of anti-cracking fiber. The grouting material has the advantages that by compounding the functions of admixture, high-strength aggregate, macromolecular polymer and the like, the grouting material has good fluidity under the condition of certain water and cement ratio; under the action of self gravity, the whole space can be fully filled; in the construction process, the air bubbles at the interior and surface of the grout can be automatically eliminated; the density and anti-seepage property of the hardened grout are improved; under the action of macromolecular polymer, the strength of thegrout is adjusted to reach the use strength; under the mutual action of optimized gradation aggregate, the anti-breaking strength is obviously improved, the elastic modulus is reduced, and the anti-seismic property of the hardened grout is more excellent.

Description

technical field [0001] The invention relates to a grouting cement material and a production method thereof, in particular to a road culvert grouting material and a production method thereof. Background technique [0002] At present, highway culvert concrete plays a great role in the process of infrastructure construction, but it is far from meeting the requirements of these fine, thin and small parts. It is mainly manifested in the disadvantages of small flow, long setting time, large shrinkage, and poor filling effect, while the grouting material using ordinary cement as the cementitious material has a long setting time and is prone to settlement. Ordinary grouting materials generally focus on compressive strength, while the flexural strength is low, resulting in a high crush ratio, which is not conducive to the improvement of resistance performance. The technical requirements for use cannot be met under the condition of non-stop or limited-time production. Therefore, the ...

AI Technical Summary

Problems solved by technology

[0002] At present, highway culvert concrete plays a great role in the process of infrastructure construction, but it is far from meeting the requirements of these fine, thin and small parts

Mainly manifested in the disadvantages of small flow, long setting time, large shrinkage, and poor filling effect, while the grouting material using ordinary cement as the cementitious material has a long setting time and is prone to settlement

Ordinary grouting materials generally focus on compressive strength, while the flexural strength is low, resulting in a high crush ratio, which is not conducive to the improvement of resistance performance

The technical requirements for use cannot be met under the condition of non-stop or limited-time production, so the market is looking forward to self-leveling and high-strength grouting materials with high hourly strength and long-term stable performance.

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