A kind of pipeline engineering trench backfill material cement multi-compound mixture and preparation method

A technology of trench backfilling and pipeline engineering, which is applied in the field of building materials, can solve problems such as impact on life safety and ground subsidence, and achieve the effects of saving manpower and material resources, increasing strength and durability, and good workability

Active Publication Date: 2016-06-22
JINAN URBAN CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the passage and loss of underground fine-grained soil, the soil is hollowed out, and there will be cavities in the ground, and the pipeline will be displaced in the space, causing the ground to collapse and affecting the safety of human life.

Method used

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  • A kind of pipeline engineering trench backfill material cement multi-compound mixture and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The preparation method of the pipeline engineering trench backfill material cement multi-mixture of the present embodiment, its steps are:

[0014] (1) Material selection: The construction waste crushed mixture and soil are used as the main constituent materials, supplemented by a small amount of cement, and the cement accounts for 3% of the total mixture;

[0015] (2) Mixing with water: the soil accounts for 35% of the total amount of the mixture, and the plasticity index of the soil is 10. According to the plasticity index of the soil used to guide the amount of water added, the amount of water added accounts for 10% of the mixture, forming a kind of easy Good mixture;

[0016] (3) Pipeline backfill: In the construction of pipeline backfill, pour the prepared mixture directly into the backfill trench, vibrate it with a vibrating rod and smooth it.

Embodiment 2

[0018] The preparation method of the pipeline engineering trench backfill material cement multi-mixture of the present embodiment, its steps are:

[0019] (1) Material selection: The construction waste crushed mixture and soil are used as the main constituent materials, supplemented by a small amount of cement, and the cement accounts for 10% of the total mixture;

[0020] (2) Mixing with water: the soil accounts for 45% of the total amount of the mixture, and the plasticity index of the soil is 20. According to the plasticity index of the soil used to guide the amount of water added, the amount of water added accounts for 16% of the mixture, forming a kind of easy Good mixture;

[0021] (3) Pipeline backfill: In the construction of pipeline backfill, pour the prepared mixture directly into the backfill trench, vibrate it with a vibrating rod and smooth it.

Embodiment 3

[0023] The preparation method of the pipeline engineering trench backfill material cement multi-mixture of the present embodiment, its steps are:

[0024] (1) Material selection: The construction waste crushed mixture and soil are used as the main constituent materials, supplemented by a small amount of cement, and the cement accounts for 6% of the total mixture;

[0025] (2) Mixing with water: soil accounts for 40% of the total amount of the mixture, and the plasticity index of the soil is 15. According to the plasticity index of the soil used to guide the amount of water added, the amount of water added accounts for 13% of the mixture, forming a kind of easy Good mixture;

[0026] (3) Pipeline backfill: In the construction of pipeline backfill, pour the prepared mixture directly into the backfill trench, vibrate it with a vibrating rod and smooth it.

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Abstract

The invention relates to a building material, particularly a pipeline engineering trench backfill material cement all-in-one mixture and a preparation method thereof. The mixture is mainly composed of a construction waste crushed mixture and soil and also composed of a small amount of cement as an auxiliary material, wherein the cement accounts for 3-10% of the mixture, the soil accounts for 35-45% of the mixture, the plasticity index of the soil is 10-20, and the water accounts for 10-16% of the mixture. The mixture has favorable workability, so such backfill mode can not leave dead corners at the pipeline axil angles, and the mixture can uniformly and compactly fill every corner and is safe and reliable. Compared with the traditional construction technique, the construction technique provided by the invention saves abundant human resources and material resources, greatly shortens the construction period, and is very worthy of popularization. In the aspect of material composition, the construction waste is utilized and changed into valuable substances to regenerate value, thereby implementing the ideas of energy saving and environment-friendly production.

Description

(1) Technical field [0001] The invention relates to building materials, in particular to a cement multi-mixture, a trench backfill material for pipeline engineering, and a preparation method thereof. (2) Background technology [0002] At present, the trench backfill materials of municipal pipeline projects in my country are generally plain soil, lime soil, yellow sand, stone powder and stone chips mixed in a certain proportion, cement, stone powder and stone chips mixed in a certain proportion, graded crushed (gravel) stone and cement Stable crushed (gravel) materials, etc., most of them are compacted or rolled. This backfill method has long had a problem, that is, it is difficult to roll compactly or Compaction, the compactness of the backfill material does not meet the design requirements, and the void ratio is relatively large. Due to the immersion of surface water and the movement of groundwater, as well as the outward leakage of water in pipes or underground structures, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00E02D17/18C04B14/10
Inventor 孙杰李峤玲刘锋王显根李晓东房立红杨爱民
Owner JINAN URBAN CONSTR GRP
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