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Light rolling-free abutment backfilling material and preparation method thereof

A lightweight and raw material technology, applied in ceramic products, other household utensils, applications, etc., can solve the problems of backfill material density that is difficult to meet the design requirements, difficult to roll or tamp, ground subsidence, etc., to save non-renewable land resources , good construction workability, no secondary pollution effect

Active Publication Date: 2017-04-26
SHANDONG TRANSPORTATION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because there is not enough working surface at the back of the platform or the axil corner of the pipeline, it is difficult to roll or tamp, and the compactness of the backfill material is difficult to meet the design requirements, and the pores are relatively large
In addition, there is a gap on the side where the filling body meets the concrete, which is prone to water seepage
This will lead to contact erosion between the backfill material and the pipes and structures, and the soil will be hollowed out to produce cavities, so that the ground will collapse, which will affect safety
The soil has the characteristics of natural settlement, but the concrete pouring body generally does not settle, so this section of the subgrade is more prone to shear failure and bridge head jumping

Method used

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  • Light rolling-free abutment backfilling material and preparation method thereof
  • Light rolling-free abutment backfilling material and preparation method thereof
  • Light rolling-free abutment backfilling material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The light-weight non-rolling platform backfill material and its preparation method of the present invention will be described in detail below with specific examples.

[0028] 【Preparation Example】

[0029] Implementation steps

[0030] (1) The aluminum industry waste slag should undergo preliminary crushing, and the pass rate of 2cm particle size in the screening results should not be lower than 75%;

[0031] (2) adding sintering process aluminum smelting waste slag and cement into water and mixing evenly;

[0032] (3) Add polycarboxylic acid-based high-performance water reducer and sodium sulfite reducing agent, and mix well to obtain a finished lightweight mixture.

[0033] The weight ratio of each raw material:

[0034]

[0035]

[0036] 【Test method and effect】

[0037] Backfill:

[0038] The lightweight mixture (Example 1 to Example 5) prepared according to the above method was directly backfilled into the trench without vibrating and compacting.

[003...

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Abstract

The invention discloses a light rolling-free abutment backfilling material and a preparation method thereof, and belongs to the field of road engineering. A curing agent is prepared by mixing sintering-process aluminum smelting waste residues, cement, a water reducing agent, a reducing agent and water according to a certain proportion. The backfilling material takes the sintering-process aluminum smelting waste residues as main materials, has the advantages of being low in cost, uniform, good in density and the like and has the very good application and popularization value.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a light-weight non-rolling abutment backfill material and a preparation method thereof. Background technique [0002] For the backfilling of trenches and abutments in road engineering, plain soil, lime soil, stone powder and stone chips are generally selected and mixed according to a certain proportion, and then compacted or rolled into shape. However, because there is not enough working surface on the back of the abutment or the axillary corner of the pipeline, it is difficult to roll or compact, and the compactness of the backfill material is difficult to meet the design requirements, and the pores are relatively large. In addition, there are gaps on the side where the filling body meets the concrete, which is prone to water seepage. This will lead to contact erosion between the backfill material and the pipeline and structures, and the soil will be hollowed out to produce cavi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B38/08C04B111/40
CPCC04B28/04C04B38/08C04B2111/0075C04B2111/40C04B18/141C04B2103/302C04B22/14
Inventor 程钰孙兆云陈婷婷
Owner SHANDONG TRANSPORTATION INST
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