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

A lightweight foam and subgrade technology, applied in the field of lightweight foam soil, can solve the problems of low utilization rate of excavation surface, high support cost, and reduced excavation volume, achieving uniform and independent hole diameter, small settlement, and reduced effect of density

Inactive Publication Date: 2016-01-13
河南华泰新材科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The present invention is applied to the light soil for the replacement of special roadbeds in subways, and is made of the following raw materials in parts by weight: 120 parts of cement, 5 parts of silica fume powder, 5 parts of diatomaceous earth, 60 parts of water, 2 parts of water reducing agent, 1 part of early strength agent, 5 parts of synthetic fiber, 5 parts of foaming agent, 2 parts of microfoaming agent.

[0055] The cement is preferably PO42.5 Portland cement.

[0056] The water reducer is preferably a polycarboxylate water reducer.

[0057] The early strengthening agent is calcium chloride.

[0058] The foaming agent is preferably a HT composite foaming agent, and its components include animal protein and vegetable protein, and one or more of rosin soap, hydrogen peroxide and aluminum powder.

[0059] The microfoam is preferably prepared by diluting the foaming agent with water at a ratio of 1:2000 and microfoaming through a plunger pump.

[0060] The syn...

Embodiment 2

[0066] The present invention is applied to the lightweight soil for the replacement of special roadbeds in subways. It is made of the following components by weight: 200 parts of cement, 35 parts of silica fume powder, 55 parts of diatomaceous earth, 150 parts of water, 20 parts of water reducing agent, 3 parts of early strength agent, 20 parts of synthetic fiber, 10 parts of foaming agent, and 15 parts of microfoaming agent.

[0067] The cement is preferably PO52.5R Portland cement.

[0068] The water reducer is preferably a polycarboxylate water reducer.

[0069] The early strengthening agent is sodium chloride.

[0070] The foaming agent is preferably a HT composite foaming agent, and its components include animal protein and vegetable protein, and one or more of rosin soap, hydrogen peroxide and aluminum powder.

[0071] The microfoam is preferably prepared by diluting the foaming agent with water at a ratio of 1:2000 and microfoaming through a plunger pump.

[0072] Th...

Embodiment 3

[0078] The present invention is applied to the lightweight soil for the replacement of special roadbeds in subways, and is made of the following raw materials in parts by weight: 150 parts of cement, 20 parts of silica fume powder, 30 parts of diatomite, 90 parts of water, 15 parts of water reducing agent, 2 parts of early strength agent, 15 parts of synthetic fiber, 8 parts of foaming agent, and 9 parts of microfoaming agent.

[0079] The cement is preferably PO42.5 Portland cement.

[0080] The water reducer is preferably a polycarboxylate water reducer.

[0081] The early strengthening agent is calcium chloride.

[0082] The foaming agent is preferably a HT composite foaming agent, and its components include animal protein and vegetable protein, and one or more of rosin soap, hydrogen peroxide and aluminum powder.

[0083] The microfoam is preferably prepared by diluting the foaming agent with water at a ratio of 1:2000 and microfoaming through a plunger pump.

[0084] T...

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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...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/10E01C3/04
Inventor 张建华华振贵唐璐吕文朴孙根生刘洋张雷
Owner 河南华泰新材科技股份有限公司
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