Premixed flow state filling material of easily-weathered rock aggregate

A technology of filling material and weathered rock, which is applied in the field of building materials, can solve the problems of uneven settlement in the backfill area of ​​the foundation trench, threaten the safety of people's lives and property, and affect the appearance of the city. Sexual and inclusive effects

Pending Publication Date: 2022-07-29
甘肃西部岩土工程有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The occurrence of such engineering accidents is caused by the fact that the backfilling of the foundation trench does not meet the engineering quality requirements. After the foundation trench backfilling is completed, it will be affected by external factors such as groundwater seepage, surface overload, surface water infiltration, and the consolidation and settlement of the backfill soil itself. The combined effect of internal factors causes large-area uneven settlement in the foundation trench backfill area, which not only affects the appearance of the city, but even threatens the safety of people's lives and property

Method used

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  • Premixed flow state filling material of easily-weathered rock aggregate
  • Premixed flow state filling material of easily-weathered rock aggregate
  • Premixed flow state filling material of easily-weathered rock aggregate

Examples

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Effect test

Embodiment 1

[0062] Limestone, shale, sandstone, schist, phyllite and other easily weathered rocks excavated from the foundation trench, bentonite and collapsible loess are the main materials, and the curing agent is the secondary material, and the curing agent is ordinary silicate Cement, the cement strength grade is 42.5MPa, and the admixture is a retarded solid pumping agent. The aggregate is transported into the mixer, and at the same time, the curing agent, admixture and a certain proportion of water are mixed to form a slurry, which is also transported to the mixer. After the mixer is evenly stirred, a filling material with good fluidity and a certain strength after hardening is formed . The composition materials of the ready-mixed fluid filling material of easily weathered rock, bentonite and collapsible loess aggregate in this example 1 are: the fine aggregate is bentonite, collapsible loess and easily weathered rock fine aggregate respectively account for the aggregate 5%, 36% an...

Embodiment 2

[0064] Limestone, shale, sandstone, schist, phyllite and other easily weathered rocks excavated from the foundation trench, bentonite and collapsible loess are the main materials, and the curing agent and admixture are the secondary materials, and the curing agent is ordinary Portland cement, the cement strength grade is 42.5MPa, and the admixture is a retarded solid pumping agent. The aggregate is transported into the mixer, and at the same time, the curing agent, admixture and a certain proportion of water are mixed to form a slurry, which is also transported to the mixer. After the mixer is evenly stirred, a filling material with good fluidity and a certain strength after hardening is formed . The composition material of the ready-mixed fluid filling material of easily weathered rock aggregate in this example 2 is: the fine aggregate is bentonite, collapsible loess and easily weathered rock fine aggregate respectively account for 11% and 22% of the total aggregate amount. ...

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Abstract

The invention discloses a premixed flow state filling material of easily-weathered rock aggregate, which is formed by jointly mixing easily-weathered rock such as limestone, shale, sandstone, schist and phyllite, aggregate composed of bentonite and collapsible loess, a curing agent, an additive and water, and the aggregate is composed of fine aggregate and coarse aggregate. According to the mixed filling material, common engineering soil in the northwest region is used as a raw material, and the mixed filling material which is weak in shrinkage performance, low in consolidation settlement, free of collapsibility, low in permeability, capable of meeting the bearing capacity requirement and low in price and takes the easily-weathered rock as the main body in the backfilling process is provided.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a ready-mixed fluid filling material of easily weathered rock aggregates. Background technique [0002] The ready-mixed fluid filling material is mainly sandy soil, accompanied by a small amount of curing agent and admixture, which is a new type of environmental protection building engineering material with significant economic, environmental and social benefits. It has the advantages of short molding time, adjustable strength, fast construction speed, high economic benefit, good anti-seepage, anti-compression and anti-freezing performance, and can be widely used in civil buildings and structures, railways, airports, highways, urban municipalities Foundation trench backfilling projects such as comprehensive pipe gallery and underground pipe network laying. [0003] With the acceleration of urbanization and the rapid development of economic construction in Northwest Ch...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/10C04B28/02C04B28/08
CPCC04B28/04C04B28/10C04B28/021C04B28/08C04B2111/0075C04B2111/00663C04B2111/00146C04B14/104C04B14/361C04B14/04C04B14/108C04B2103/0079
Inventor 赵志潘朱彦鹏金生莲王浩杨作青房光文吉海峰刘东瑞张志琦
Owner 甘肃西部岩土工程有限责任公司
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