Self-compacting backfill material, and preparation method and application thereof

A technology of self-compacting and cementitious materials, which is applied in filling, construction, infrastructure engineering, etc., can solve problems such as difficult compaction, difficult backfilling, and difficult filling, so as to ensure strength and stability and reduce pollution hazards , the effect of reducing difficulty

Pending Publication Date: 2022-01-14
中铁十一局集团西安建设有限公司 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] It is difficult to backfill the narrow part of the basement wall. Common backfills are usually plain soil, lime soil, etc. These materials are difficult to fill and compact when backfilling the narrow basement wall. Due to the heavy Mechanical inaccessibility makes it difficult for the fill in this range to reach the specified compaction value in essence. With the infiltration of groundwater later, unfilled parts are prone to subsidence and collapse, resulting in continuous the harm of

Method used

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  • Self-compacting backfill material, and preparation method and application thereof
  • Self-compacting backfill material, and preparation method and application thereof
  • Self-compacting backfill material, and preparation method and application thereof

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] The invention provides a self-compacting backfill material. The raw materials include industrial phosphogypsum, quicklime, bentonite, sieved soil, ordinary Portland cement powder, mineral powder and water. The self-compact backfill material can be obtained after mixing the above-mentioned raw materials in a certain proportion. ,

[0021] Preferably, the weight proportion between each raw material is:

[0022]

[0023] Preferably, the industrial phosphogypsum is industrial waste phosphogypsum, which is used to improve the workability of self-compacting backfill.

[0024] Preferably, quicklime is used to eliminate the harm caused by strong acidity such as fluoride ions and free sulfate radicals in industrial phosphogypsum, improve the later strength of self-compacting backfill materials, and slowly absorb the moisture in self-compact b...

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Abstract

The invention provides a self-compacting backfill material, and a preparation method and application thereof. Industrial ardealite, quick lime, bentonite, sieved soil, cement powder, mineral powder and water are mixed to obtain the self-compacting backfill material. The self-compacting backfill material reduces the difficulty of backfill construction, improves the backfill quality of foundation pits at special parts, reduces pollution hazards of industrial ardealite, and turns waste into wealth.

Description

technical field [0001] The invention belongs to the technical field, in particular to a self-compacting backfill material and its preparation method and application. Background technique [0002] It is difficult to backfill the narrow part of the basement wall. Common backfills are usually plain soil, lime soil, etc. These materials are difficult to fill and compact when backfilling the narrow basement wall. Due to the heavy Mechanical inaccessibility makes it difficult for the fill in this range to reach the specified compaction value in essence. With the infiltration of groundwater later, unfilled parts are prone to subsidence and collapse, resulting in continuous harm. Contents of the invention [0003] In order to solve the problems existing in the prior art, the present invention provides a self-compacting backfill material and its preparation method and application, which can reduce the difficulty of backfill construction, improve the quality of foundation pit backf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14E02D15/02E02D17/18
CPCC04B28/143E02D15/02E02D17/18C04B2111/00017C04B14/30C04B14/04C04B7/02C04B14/02C04B14/104
Inventor 周浩
Owner 中铁十一局集团西安建设有限公司
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