Quartz sand slag foamed light soil filling material for highway abutment backfill

Abstract

The invention relates to a quartz sand slag foamed light soil filling material for highway abutment backfill. The industrial tailings quartz sand slag, cement, a foaming agent and the like are adopted as the raw materials, and by controlling the proportion of all the component materials, the foamed light soil can be obtained. Specifically, the content of water is 25%-50%, the content of cement is 20%-40%, and the content of quartz sand slag is 25%-50%. The filling material provided by the invention is used for backfill, can greatly ease the variation gradient of differential settlement between a bridge (culvert) and a roadbed, so that the variation of differential settlement between the bridge and roadbed becomes slow and uniform, and the vehicle bump problem between the bridge (culvert) and the roadbed in expressway can be fundamentally eliminated. Also, the foamed light soil generates small soil lateral pressure which cannot make the bridge (culvert) deviate, thus playing certain protection role to the bridge (culvert) indirectly.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and is a material used for backfilling of abutments, which can greatly alleviate the gradient of differential settlement between bridges (culverts) and roadbeds, and slow down and homogenize the change of differential settlements between bridge foundations. , Fundamentally eliminate the problem of jumping between the bridge (culvert) and the roadbed in the expressway. Background technique [0002] If the abutment back of the bridge (culvert) is backfilled with general backfill materials, due to the narrow area near the bridge (culvert), the compaction equipment cannot be close to the back of the abutment during construction, the pores between the filler particles cannot be completely eliminated, or the quality of the filler is poor , fail to meet the design requirements or specification standards, under the action of the road's own weight and vibration load, the packing will inevitably ...

AI Technical Summary

Problems solved by technology

[0002] If the abutment back of the bridge (culvert) is backfilled with general backfill materials, due to the narrow area near the bridge (culvert), the compaction equipment cannot be close to the back of the abutment during construction, the pores between the filler particles cannot be completely eliminated, or the quality of the filler is poor , fail to meet the design requirements or specification standards, under the action of the road's own weight and vibration load, the packing will inevitably produce compression settlement, resulting in jumping

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