Lightweight water permeable material for bridgehead back backfill and preparation method thereof

A water-permeable and bridgehead technology, applied in the field of materials, can solve problems such as limited landfill sites, and achieve the effects of low settlement, good carbonation resistance, and good water resistance

Inactive Publication Date: 2018-07-20
WUHAN MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a light-weight water-permeable material for backfilling the back of the bridge head and abutment and its prepara

Method used

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  • Lightweight water permeable material for bridgehead back backfill and preparation method thereof
  • Lightweight water permeable material for bridgehead back backfill and preparation method thereof
  • Lightweight water permeable material for bridgehead back backfill and preparation method thereof

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preparation example Construction

[0040] A preparation method for the lightweight water-permeable material used for bridgehead abutment backfill, is characterized in that, comprises the steps:

[0041] Step 1: Weigh the municipal solid waste incineration bottom slag, cement and water according to the proportion, and divide the water into two, mix and stir the municipal solid waste incineration bottom slag, cement and a part of the water at normal temperature to obtain mixture;

[0042] Step 2:: take foaming agent by proportioning, add another part of water to it, and carry out air pressure foaming in foaming agent, obtain fine and close uniform foam;

[0043] Step 3: Add the foam prepared in step 2 to the mixture prepared in step 1, and stir at normal temperature to obtain a lightweight water-permeable material.

[0044] The preparation method of the lightweight water-permeable material used for the backfilling of the bridgehead and abutment backfill of the present invention can produce a light-weight water-p...

Embodiment 1

[0049] The lightweight water-permeable material used for backfilling the back of the abutment includes the following components by weight fraction:

[0050] Element

Ordinary Portland Cement

Bottom dross

water

Foaming agent

Dosage

63.2％

3.3％

33.2％

0.3％

[0051] Weigh cement, municipal solid waste incineration bottom slag and water according to the above ratio, and divide the water into two, place the municipal solid waste incineration bottom slag, cement and a part of water in a mixer at normal temperature Mix and stir, and stir slowly at room temperature for 2 minutes to obtain a mixture;

[0052] Weigh the foaming agent of the above ratio, add another part of water to the foaming agent, and add it to the weighed water, and foam through a foaming machine to obtain a fine and uniform foam, wherein the foaming agent and another part The mass ratio of water is 1:20;

[0053] The prepared fine and uniform foam was added to t...

Embodiment 2

[0061] The lightweight water-permeable material used for backfilling the back of the abutment includes the following components by weight fraction:

[0062] Element

[0063] Adopt the method as above-mentioned embodiment one to make lightweight water-permeable material, it is tested according to the method in embodiment one, and it is recorded that its dry density is 703kg / m 3 , the water absorption rate is 23.1%, the compressive strength is 1.69Mpa, the strength increases rapidly, the final strength is high, and it has excellent fluidity and water resistance.

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Abstract

The invention relates to a lightweight water permeable material for bridgehead back backfill and a preparation method thereof. The lightweight water permeable material comprises the following components in percentage by weight: 56-64 percent of cement, 3-10 percent of municipal domestic waste incineration bottom slag, 0.2-0.4 percent of a foaming agent and 30-36 percent of water. The lightweight water permeable material for bridgehead back backfill, provided by the invention, is lightweight, can greatly reduce the self weight of foundation soil, is more suitable in liquidity, can meet the self-flow requirements for backfilled materials during construction, is good in water resistance, can keep the integrity of an original structure intact in a flowing water environment, meets the strengthrequirements, does not shrink and is good in durability.

Description

technical field [0001] The invention relates to the field of material technology, in particular to a light-weight water-permeable material used for backfilling of bridgehead and abutment backfill and a preparation method thereof. Background technique [0002] Vehicle jumping at the bridge head is a common disease on the road. It refers to the wheel vibration phenomenon that occurs when vehicles pass through the road-bridge junction caused by the differential settlement between the abutment structure and the embankment behind the abutment. When the vehicle passes through the jump node, passengers and drivers will feel obvious vibration, which seriously affects the driving comfort and people's physical and mental health. At the same time, it is required to be forced to slow down when driving, reducing the service life of the vehicle. It may even cause traffic accidents. Therefore, it is of great significance to improve the service level of high-grade highways to minimize or e...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/02C04B111/40
CPCC04B28/04C04B2111/00017C04B2111/00732C04B2111/0075C04B2111/40C04B18/10C04B24/14C04B38/02
Inventor 张利华周俊胡国祥张守城刘亚洲刘兰君俞建平李朝晖
Owner WUHAN MUNICIPAL ENG DESIGN & RES INST
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