High-stability roadbed filler and preparation method thereof

A roadbed filling and high-stability technology, which is applied in the field of geotechnical engineering, can solve the problems of frost heaving, cracking and poor antifreeze performance of roadbed fillings on the surface of the roadbed, so as to enhance the antifreeze performance and stability, enhance the antifreeze performance, reduce the The effect of frost heaving on the risk of cracking

Pending Publication Date: 2021-07-09
杭州航弘建设科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the related technologies mentioned above, most of the land in my country is permafrost and seasonally frozen soil, and the antifreeze performance of roadbed fillings is poor. When it is in a low temperature state, the water in the land condenses into ice and expands, causing the surface of the roadbed to be prone to freezing. Swelling, cracking and other problems

Method used

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  • High-stability roadbed filler and preparation method thereof
  • High-stability roadbed filler and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] A kind of high-stability roadbed filler, the concrete component that comprises and weight are as shown in table 2, is made by following steps:

[0049] S1: Mix gravel soil, limestone, and fly ash in a mixing tank at a stirring speed of 1500r / min. After stirring evenly, add yellowstone powder and phosphogypsum and stir at a stirring speed of 1200r / min. After stirring evenly, the first mixture;

[0050] S2: the first mixture is mixed and stirred with calcium carbonate and potassium carbonate, and the stirring speed is 800r / min, and the second mixture is obtained after stirring;

[0051] S3: Mix and stir the second mixture together with the antifreeze agent and reinforcing agent at a stirring speed of 1000r / min to obtain the roadbed filler after stirring evenly.

Embodiment 2

[0052] Embodiment 2: a kind of high stability roadbed filler, the difference with embodiment 1 is that specific components and weight are different, and the specific components and weight that comprise are as shown in table 2.

Embodiment 3-4

[0053] Embodiment 3-4: a kind of high-stability roadbed filler, the difference with embodiment 1 is that the composition and weight of antifreeze are different, and the concrete composition and weight that comprise are as shown in table 2.

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Abstract

The invention relates to the technical field of geotechnical engineering, and particularly discloses a high-stability roadbed filler and a preparation method thereof. The roadbed filler comprises the following raw materials by weight: 20 to 30 parts of gravelly soil, 10 to 20 parts of limestone, 40 to 55 parts of fly ash, 10 to 20 parts of yellow stone powder, 4 to 6 parts of an anti-freezing agent, 2 to 4 parts of a reinforcing agent, 0.8 to 1.5 parts of calcium carbonate, 1 to 2 parts of potassium carbonate, and 1 to 2 parts of phosphogypsum, wherein the anti-freezing agent comprises at least one selected from fish collagen powder and glucose. The preparation method of the roadbed filler comprises the following steps: uniformly mixing the gravelly soil, the limestone and the fly ash, adding the yellow stone powder and the phosphogypsum, and conducting uniform mixing to obtain a first mixture; uniformly mixing the first mixture with calcium carbonate and potassium carbonate, then jointly mixing the obtained mixture with the anti-freezing agent and the reinforcing agent; and conducting uniform mixing to obtain the roadbed filler. The roadbed filler disclosed by the invention has the advantage of good anti-freezing property.

Description

technical field [0001] The application relates to the technical field of geotechnical engineering, in particular to a high-stability roadbed filler and a preparation method thereof. Background technique [0002] Roadbed filler refers to the material used to fill the roadbed. The roadbed is the foundation of the road surface. The roadbed filler is the basic guarantee for the strength and stability of the roadbed. In recent years, due to the low strength and poor stability of the traditional roadbed filler, after the road has been used for a period of time, it is easy to Problems such as sag and damage occur, and roadbed fillers with high stability and strength are required to fill the roadbed. [0003] Publication number CN102690098A, a road subgrade filler and its preparation method disclosed on September 26, 2012, is prepared from lime, fly ash, phosphogypsum and stabilizer raw materials; each of lime, fly ash and phosphogypsum The percentage by weight of raw materials is:...

Claims

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Application Information

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IPC IPC(8): C04B30/00C04B24/14C04B22/08E01C3/00E01C3/06C04B103/60C04B111/20
CPCC04B30/00C04B40/0039E01C3/00E01C3/06C04B2111/0075C04B2111/29C04B2201/50C04B2103/601C04B14/04C04B14/28C04B18/08C04B14/02C04B22/10C04B22/143C04B24/14C04B24/10C04B22/00
Inventor 钱彩红
Owner 杭州航弘建设科技有限公司
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