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Carbide slag fly ash stabilized soil material for roads and preparation method thereof

A technology of calcium carbide slag and fly ash, which is applied in the field of calcium carbide slag fly ash stabilized soil materials and its preparation, can solve the problems of soil and water pollution, land occupation, and damage to the surrounding environment, and achieve simple preparation process, good strength and Water stability, choose reasonable effect

Inactive Publication Date: 2021-06-04
CHANGAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Numerous enterprises that produce dissolved acetylene, polyvinyl alcohol, PVC, etc. produce a large amount of carbide slag every day, and many enterprises usually adopt stockpiling or landfill treatment, which not only increases the management expenses of enterprises, but also occupies a large amount of At the same time, the piled and buried calcium carbide slag will also pollute the surrounding soil and waters through infiltration, making it difficult to treat and restore, seriously damaging the surrounding environment, and bringing harm to human survival

Method used

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  • Carbide slag fly ash stabilized soil material for roads and preparation method thereof
  • Carbide slag fly ash stabilized soil material for roads and preparation method thereof

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Effect test

preparation example Construction

[0031] A preparation method for a calcium carbide slag fly ash stabilized soil material for roads, comprising the following steps:

[0032] Step 1. First fully mix carbide slag, fly ash and active activator, then add dispersed polypropylene fiber and mix evenly, and finally mix the mixed slag powder-fiber cement and dry soil sample evenly to obtain Mixture A ;

[0033] Step 2, sampling the mixture A to determine the optimum water content of the mixture A;

[0034] Specifically, the optimum moisture content is determined according to the compaction method in the "Test Regulations for Inorganic Binders for Highway Engineering" (JTG E51-2009).

[0035] The sample taken out is divided into 5-6 parts by quartering method, and 5-6 different water contents (with a difference of 0.5%-1.5% in turn) are added to the sample to prepare the sample. Measure the dry density of the sample under different water contents through the compaction test, draw the water content and dry density curv...

Embodiment 1

[0038] The present embodiment prepares the calcium carbide slag fly ash stabilized soil as road base, subbase filler according to the following steps:

[0039] Step 1. Sieve the pellets for the test respectively, wherein the calcium carbide slag passes through a 0.15mm sieve, the fly ash passes through a 0.075mm sieve, and the soil sample particles pass through a 2.36mm sieve, and the carbide slag, fly ash and soil sample particles are drying;

[0040] Step 2. According to mass percentage, take 8% carbide slag, 8% fly ash, 84% dry soil, 0.1% polypropylene fiber and 0.004% active activator, first fully mix the carbide slag, fly ash and active activator , then add dispersed polypropylene fibers and stir evenly, and finally mix the mixed slag powder-fiber cement with dry soil and mix evenly to obtain the mixture A;

[0041] Step 3, sample the mixture A, determine the best moisture content of the mixture A sample to be 13.0% according to the compaction method in "Highway Engineer...

Embodiment 2

[0045] The present embodiment prepares the calcium carbide slag fly ash stabilized soil as road base, subbase filler according to the following steps:

[0046] Step 1. Sieve the test materials respectively, among them, calcium carbide slag passes through a 0.15mm sieve, fly ash passes through a 0.075mm sieve, and soil sample particles pass through a 2.36mm sieve, and the carbide slag, fly ash and soil sample particles are dried ;

[0047] Step 2, according to the mass percentage, take sieved carbide slag 8%, fly ash 14%, dry soil 78%, polypropylene fiber 0.1%, active activator 0.004%, firstly carbide slag, fly ash and active excitation Mix well with the agent, then add dispersed polypropylene fibers and mix evenly, finally mix the mixed slag powder-fiber cement and dry soil evenly to obtain Mixture A;

[0048] Step 3, sample the mixture A, determine the best moisture content of the mixture A sample to be 13.6% according to the compaction method in "Highway Engineering Inorgan...

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Abstract

The invention discloses a carbide slag fly ash stabilized soil material for roads and a preparation method thereof, the carbide slag fly ash stabilized soil material comprises the following components by mass percentage: 4%-12% of carbide slag, 8%-17% of fly ash, 77%-85% of dry soil, 0.1% of polypropylene fiber and 0.004% of an active activator. Crystalline crystals such as hydrated calcium silicate, hydrated calcium aluminate, ettringite and the like are generated through a pozzolanic reaction of the carbide slag and the fly ash cementing material, and meanwhile, the tensile strength of the stabilized soil is improved by doping the polypropylene fibers. A filling material is provided for a road base and a subbase, the problems of accumulation and storage of the carbide slag and the fly ash, insufficient utilization rate, soil and environment pollution and the like can be effectively solved, the industrial waste residues are reasonably recycled and secondarily developed, and the material is very beneficial to the development of the country, society and enterprises no matter from the perspective of social benefit, environmental benefit and economic benefit, and is also beneficial to the sustainable development and utilization of natural resources.

Description

technical field [0001] The invention relates to the technical field of geotechnical and road engineering, in particular to a calcium carbide slag fly ash stabilized soil material for roads and a preparation method thereof. Background technique [0002] In highway engineering construction, especially in the paving process of base and sub-base, the consumption of lime is very large, and the price of lime keeps rising in recent years, which has just increased the construction cost to a great extent. At the same time, with the deepening of the sustainable development strategy, highway construction also needs to keep up with the pace, and it is necessary to find a new type of road environmental protection material that can replace lime. [0003] As an important chemical raw material, calcium carbide is widely used in the production of polyvinyl chloride, vinylon, lime nitrogen, dicyandiamide, carbon black, dissolved acetylene and other products. By the end of 2016, my country's ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/02C04B16/06C04B18/04C04B18/08
CPCC04B30/02C04B18/0481C04B18/08C04B16/0633C04B2111/0075C04B2201/50C04B14/361C04B2103/402C04B24/24Y02W30/91
Inventor 栗培龙丁湛裴仪胡晋川高朋沈明汉胡凯森邴慧
Owner CHANGAN UNIV
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