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Liquid fly ash material for road abutment back backfilling and preparation process of liquid fly ash material

A preparation process, fly ash technology, applied in the field of building materials, can solve the problems of long-time preparation, low preparation efficiency, and inability to meet the backfilling of road abutments, so as to improve the preparation speed, avoid full filling, and reduce stirring and mixing time Effect

Pending Publication Date: 2021-05-04
中电建路桥集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a liquid fly ash material and its preparation process for backfilling of highway abutments, to solve the problem that the backfilling materials in the prior art cannot meet the needs of backfilling of highway abutments, and when preparing, it is necessary to Mix all kinds of raw materials, water, additives, etc., because the materials are added one by one, and there are different spaces between the raw materials, so it needs to be stirred and mixed for a long time, so that It is mixed to make the backfill material into shape, so it takes a long time to prepare, that is, the problem of low preparation efficiency

Method used

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  • Liquid fly ash material for road abutment back backfilling and preparation process of liquid fly ash material
  • Liquid fly ash material for road abutment back backfilling and preparation process of liquid fly ash material
  • Liquid fly ash material for road abutment back backfilling and preparation process of liquid fly ash material

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Embodiment 1

[0039] The invention provides a liquid fly ash material used for backfilling of highway abutments and a preparation process thereof. The composition material of the liquid fly ash material includes cement, fly ash, water and admixture, and its mixing ratio is cement:powder Coal ash: water: additive = 10-20: 80-90: 30-40: 0.1-0.2, wherein the content of the additive is 1% of the cement content.

[0040] The liquid fly ash material used for backfilling of road abutments has the characteristics of high strength, light weight, high compactness, low compressibility, high rigidity and the like. Liquid fly ash is a lightweight material, and the additional load on the foundation after backfilling is small, which greatly reduces the additional stress on the soil at the bottom of the abutment back foundation. Liquid fly ash has good fluidity before initial setting, and the backfill is self-compacting, which can avoid the defect of incomplete filling of conventional backfill materials. ...

Embodiment 2

[0045] Such as Figure 4 As shown, the present invention provides a kind of preparation technology of the liquid fly ash material that is used for road abutment backfill, and this preparation technology comprises the following steps:

[0046] S100, weighing cement, water, fly ash and admixture according to the proportion;

[0047] S200, sending cement, fly ash, water and additives into the material mixing equipment, and mixing by the material mixing equipment at normal temperature to obtain the fly ash-water-cement mixture, which is taken out;

[0048] S300. Send the fly ash-water-cement mixture prepared in step S200 into a stirring device, and stir at normal temperature to prepare a liquid fly ash material.

[0049] Further, in step S100, the water is divided into two parts, and the ratio of the two parts of water is 10-20:80-90, wherein the water with a mass fraction of 10-20 is mixed with cement, and the mass fraction is 80- 90% water mixed with fly ash;

[0050] At the ...

Embodiment 3

[0073] Such as Figure 4 Shown, the present invention provides another kind of preparation technology for the liquid fly ash material of backfilling of highway abutment, and this preparation technology comprises the steps:

[0074] S100, weighing cement, water, fly ash and admixture according to the proportion;

[0075] S200, sending cement, fly ash, water and additives into the material mixing equipment, and mixing by the material mixing equipment at normal temperature to obtain the fly ash-water-cement mixture, which is taken out;

[0076] S300. Send the fly ash-water-cement mixture prepared in step S200 into a stirring device, and stir at normal temperature to prepare a liquid fly ash material.

[0077] In step S400, the stirring time is 2 minutes.

[0078] Such as figure 1 with image 3As shown, based on the above-mentioned preparation process, this embodiment also proposes a material mixing device for the preparation process of liquid fly ash material, the material mi...

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Abstract

The invention discloses a liquid fly ash material for road abutment back backfilling and a preparation process of the material. The liquid fly ash material comprises cement, fly ash, water and an additive, the mixing ratio of the cement to the fly ash to the water to the additive is (10-20): (80-90): (30-40): (0.1-0.2), and the content of the additive is 1% of the content of the cement; when the liquid fly ash material is prepared, the cement, the water, the fly ash and the additive are weighed according to the proportion; the cement, fly ash, water and additive are mixed to obtain a fly ash-water-cement mixture; the fly ash-water-cement mixture is stirred to prepare a liquid fly ash material; by presetting the falling speed and position of the raw materials, the powder can be quickly and uniformly mixed with water, the subsequent stirring and mixing time is shortened, and the preparation speed of the liquid fly ash material is increased.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a liquid fly ash material used for backfilling of highway abutments and a preparation process thereof. Background technique [0002] At present, in highway, bridge abutment, culvert and other projects, using traditional backfill materials such as lime soil, water stability and other materials, not only the construction process is complicated, the quality of each process is difficult to guarantee, but also its strength is low, the stiffness is small, and the compressibility is relatively high. Large; after backfilling, with the increase of time, the settlement at the back of the platform is relatively large, and a wrong platform is formed at the back of the platform. [0003] The existing plain soil, lime soil, stone powder and stone chips are mixed according to a certain proportion, and after being compacted or rolled into shape, it is difficult to achieve high strengt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B40/00B28C5/06B28C7/06B28C7/12
CPCC04B28/04C04B40/0028B28C5/06B28C7/065B28C7/128C04B2111/0075C04B18/08C04B2103/302C04B22/002
Inventor 冯仲宁黄大伟胡立马丁杜威陈宏伟
Owner 中电建路桥集团有限公司
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