Lightweight foam soil applied to roadbed filling of mountainous-area steep road section

Abstract

The invention provides lightweight foam soil applied to roadbed filling of a mountainous-area steep road section and relates to a building material. The lightweight foam soil applied to the roadbed filling of the mountainous-area steep road section is prepared from the following raw materials: cement, silica fume, diatomite, water, a water reducing agent, an early strength agent, synthetic fibers, a foaming agent and a micro foam agent. By applying the lightweight foam soil to a steep mountainous area, the workload of roadbed excavation engineering is reduced by more than half; by adopting a large volume of lightweight foam soil, a mountain massif can bear relatively low pressure, and the lightweight foam soil can penetrate into gaps of the mountain massif, so that a bottom layer and the mountain massif are merged into one body, the bottom of a roadbed is stabilized, and the shoring cost is reduced compared with that of the conventional technologies; a cushion layer is integrated, so that the water stability is better; and steel mesh reinforcements are added into the roadbed, so that the resistance to heavy rain, mountain torrents and mudslides of a constructed road is higher, and thus the lightweight foam soil is worthy of popularization and application.

Description

technical field [0001] The invention relates to a building material, in particular to a lightweight foam soil used for roadbed filling in steep road sections in mountainous areas. Background technique [0002] The steep road section in the mountainous area refers to the development of winding roads in the steep mountain area. Because it needs to excavate the road surface on the mountainside, the difficulty can be imagined. However, the existing steep slope often needs to open up a wider base surface, and then lay For narrower roads, it is necessary to design side slopes to enhance the stability of the roadbed, which makes the excavation work huge. [0003] Due to the steepness of the mountain during excavation, in order to ensure the width of the excavated road surface, the excavation section needs to be triangular, and because the road surface is the shortest side length, a large amount of engineering is required for excavation. The technology often excavates close to a pa...

AI Technical Summary

Problems solved by technology

[0003] Due to the steepness of the mountain during excavation, in order to ensure the width of the excavated road surface, the excavation section needs to be triangular, and because the road surface is the shortest side length, a large amount of engineering is required for excavation. The technology often excavates close to a part and then uses the excavated as a cushion to pave the lower slope downward, so as to widen the road surface and reduce the amount of excavation. However, this method often requires support and compaction of the cushion, and its The requirements for deposition and compaction are very strict, and the cost of support is very high and the utilization rate of the excavation surface is very prominent.

Images