Vibration-damping anti-freezing fiber-reinforced mineral-based gelling reinforced roadbed filler and preparation method thereof

Abstract

The invention discloses a vibration-damping anti-freezing fiber-reinforced mineral-based gelatinization-reinforced roadbed filler and a preparation method thereof. The vibration-damping anti-freezingfiber-reinforced mineral-based gelatinization-reinforced roadbed filler is prepared from the following raw materials in parts by weight: 85 to 105 parts of a roadbed filler; 1 to 4 parts of a mineral-based cementing material, 9 to 15 parts of an auxiliary material and 0.5 to 8 parts of anti-crack fiber; the mineral-based cementing material is prepared from the following raw material in parts by weight: 5 to 10 parts of hornblende, 7 to 15 parts of potassium feldspar, 9 to 14 parts of ilmenite, 4 to 8 parts of corundum, 12 to 20 parts of kaolinite, 10 to 18 parts of biotite and 14 to 20 parts of pyroxene; the auxiliary material is prepared from the following raw material in parts by weight: 85 to 95 parts of an alkaline exciting agent, 0.45 to 0.8 part of a surfactant and 2 to 8 parts of awater reducing agent. The problems of roadbed vibration sinking, freezing damage caused by freezing and thawing and the like under the dynamic load effect of a train can be solved. And excellent gel solidification reinforcement and freezing damage prevention and control effects are achieved.

Description

technical field [0001] The invention relates to the field of roadbed composite material reinforcement, in particular to a vibration-damping antifreeze fiber-reinforced mineral-based gelling-reinforced roadbed filler and a preparation method thereof. Background technique [0002] High-speed and heavy-duty railways have become a major trend in the development of rail transit at home and abroad, and at the same time pose new challenges to the quality of roadbed engineering. Although traditional cement, lime and other solidification technologies can improve certain strength, there are also disadvantages and many problems at the same time, such as the defects of slow initial setting speed of cement solidified soil, large solidification shrinkage, poor dilution resistance, and easy cracking; lime and slag solidification The early strength of the soil is poor, and the strength increases slowly; the improvement effect of cement and lime on saline soil, organic soil and high plastici...

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Problems solved by technology

[0003] Aiming at the shortcomings and deficiencies of the prior art, the present invention provides a vibration-reducing antifreeze fiber-reinforced mineral-based cementitious reinforced subgrade filler and a preparation method, which solves the problem of subgrade stability control under the coupled action of seasonal freeze-thaw-rail traffic loads, especially It is the three major problems of water, deformation and vibration in roadbed stability control

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