A silt foundation material and a method for using the foundation material to construct a roadbed

A silt foundation and silt technology, applied in the field of road engineering construction, can solve the problems of high rigidity of road matrix, poor crack resistance, secondary pollution, etc.

Active Publication Date: 2021-05-18
湖北恒沁环保科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The road base formed by fly ash gravel is a semi-rigid base, which has obvious hydraulic and retarding properties. However, once the aggregates, lime and fly ash are combined, the chemical reaction inside stops, and the road matrix formed is too rigid and easy to build. Cracked by temperature and humidity, poor crack resistance
[0006] In order to solve the application of sludge, some people are thinking about solidifying the sludge and using it as a pile filler, etc., but most of the existing sludge solidification methods use cement and quicklime as the main body. The role of cement is to increase the viscosity of the sludge. The silt is bonded together, and the silt is hardened, and the treated silt cannot be used as a foundation material; and when the existing silt is solidified, the solidification time is long, and the special stench of the silt cannot be removed, and reuse will cause secondary pollution. secondary pollution

Method used

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  • A silt foundation material and a method for using the foundation material to construct a roadbed
  • A silt foundation material and a method for using the foundation material to construct a roadbed
  • A silt foundation material and a method for using the foundation material to construct a roadbed

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1 is a method for constructing roadbeds with silt foundation materials, characterized in that the specific steps are as follows:

[0038] (1) according to the formula preparation sludge solidifying agent of following mass percent: 25% slag, 21% modified diatomite, 22% attapulgite, 10% microsilica, 4% powder activated carbon, 7.5% potassium peroxide, 2% potassium permanganate, 1.5% iron powder, 3% polyrotaxane, 3% sodium polyacrylate, 0.5% calcium hydroxide, 0.3% naphthalene superplasticizer, 0.2% polyacrylamide, mix and stir the above raw materials Uniformly obtain sludge curing agent;

[0039] (2) prepare the raw material of foundation material according to following formula: 74 parts of silt, 10 parts of silt curing agent in step (1), 5 parts of fly ash, 4 parts of slag powder, 4 parts of cement, 0.8 part of curing agent, latex powder 2 parts, 0.2 parts of stabilizer;

[0040] (3) After getting 74 parts of silt and 10 parts of silt solidifying agent in st...

Embodiment 2

[0043] Embodiment 2 A method of constructing a roadbed with silt foundation materials, is characterized in that the specific steps are as follows:

[0044] (1) according to the formula preparation sludge solidifying agent of following mass percent: 20% slag, 23% modified diatomite, 21% attapulgite, 14% microsilica, 6% powder activated carbon, 6% magnesium peroxide, 1% potassium permanganate, 1% iron powder, 2% cationic chelate, 3% polyrotaxane, 2.4% sodium polyacrylate, 0.3% sodium silicate, 0.2% naphthalene superplasticizer, 0.1% polypropylene For amides, the above-mentioned raw materials are fully mixed and stirred in a mixer; the cationic chelate is formed by chelating ethylenediaminetetraacetic acid (EDTA) and calcium ions.

[0045] (2) Prepare the raw materials of the foundation material according to the following formula: 60 parts of silt, 8 parts of silt curing agent in step (1), 9.5 parts of fly ash, 10 parts of slag powder, 8 parts of cement, 1.2 parts of curing agent...

Embodiment 3

[0049] Embodiment 3 provides a method for constructing roadbeds with silt foundation materials, which is characterized in that the specific steps are as follows:

[0050] (1) According to the formula preparation sludge solidifying agent of following mass percentage: at first according to the material preparation raw material of following mass percentage: 15% slag, 24% modified diatomite, 20% attapulgite, 15% microsilica, 8 % powdered activated carbon, 5% calcium peroxide, 2% potassium permanganate, 2.2% iron powder, 4% cationic chelate, 1.5% polyrotaxane, 2% sodium polyacrylate, 0.6% calcium hydroxide, 0.4% naphthalene It is a high-efficiency water reducer and 0.3% polyaluminum chloride. The above-mentioned raw materials are fully mixed and stirred in a mixer; the cationic chelate is formed by chelating dihydroxyethylglycine (DEG) and magnesium ions.

[0051] (2) prepare the raw material of foundation material according to following formula: 65 parts of silt, 8 parts of silt c...

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Abstract

The invention provides a silt foundation material and a method for constructing a roadbed using the foundation material. The foundation material is composed of 50-70 parts of silt, 6-8 parts of silt curing agent, 6-12 parts of fly ash, 6-12 parts of slag powder, 6-12 parts of cement, and 0.8-1.5 parts of secondary curing agent, 3-4 parts of latex powder, 0.3-0.5 part of stabilizer; Described sludge curing agent is made of slag, modified diatomite, attapulgite, microsilica fume, powdered active carbon, peroxide, potassium permanganate, iron powder, polyrotaxane, sodium polyacrylate, alkaline activator, water reducer, thickener. The first choice is to solidify the silt with a silt curing agent, and then add other raw materials and use a secondary curing agent for secondary curing to prepare a silt foundation material. The sludge solidification process of the invention is simple, short in time and high in efficiency, and the solidified sludge will not cause secondary pollution, and can meet the requirements of roadbed materials.

Description

technical field [0001] The invention relates to the field of road engineering construction, in particular to a mud foundation material and a method for using the foundation material to construct a roadbed. Background technique [0002] The highway construction industry is the basic industry of the economy and plays a vital role in the development of the national economy. At present, my country's highways are far ahead of the sum of other modes of transportation in terms of passenger traffic, freight volume, and passenger turnover. However, with the rapid development of roads, especially expressway construction, the problem of premature destruction of large areas of roads is also very prominent. Many newly-built or recently overhauled national and provincial roads have experienced serious early damage, which is far behind the design service life. Reasons for premature failure of concrete pavement include design, construction and use reasons. [0003] Traditional road base ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00E01C3/04
CPCC04B28/00C04B2111/0075E01C3/04C04B18/0418C04B18/142C04B18/146C04B22/068C04B22/08C04B22/04C04B22/064C04B22/10C04B12/04C04B2103/302C04B2103/44C04B24/24C04B24/26C04B14/08C04B14/104C04B14/022C04B18/08C04B18/141C04B24/04C04B24/121C04B24/10C04B22/142C04B24/125C04B14/062C04B22/124
Inventor 段恒张沁寰
Owner 湖北恒沁环保科技有限责任公司
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