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Soil curing agent of road

A soil stabilizer and activator technology, applied in soil conditioning materials, applications, chemical instruments and methods, etc., can solve the problems of low strength, poor soil consolidation effect and high cost, and achieve resource saving, capital saving and low cost. Effect

Inactive Publication Date: 2008-06-04
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the currently used lime or fly ash soil curing agent has poor soil-fixing effect and low strength, and the cost of using cement as the curing agent is high, the purpose of the present invention is to provide a new type of curing agent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Use a ball mill to grind the undisturbed water-quenched slag (purchased from Shaanxi Longmen Iron and Steel Works) into a surface area of ​​439m 2 / kg of superfine powder, the density is 2.83g / cm 3 , the particle size distribution was measured with a laser particle size analyzer (Mastersizer 2000, Malvern Instrument Co., Ltd., UK), and the average particle size was calculated to be 14.120 μm. Slaked lime (purchased from Shaanxi Jingyang Lime Factory) was sieved with a 2.36mm sieve. The slag ultrafine powder of 68.57kg is mixed with the hydrated lime powder of the sieve of 28.57kg, and the III class industrial sodium sulfate (purchased from Shaanxi Baohua Chemical Co., Ltd.) of 2.86kg is added, and stirred evenly, promptly obtains the soil of the present invention Hardener. In this embodiment, the weight ratio of slag, slaked lime and sodium sulfate is 12:5:0.5.

Embodiment 2～9

[0037] According to the weight ratios of slag, slaked lime and sodium sulfate in Table 1, the same preparation method as in Example 1 was adopted to prepare the soil stabilizers of Examples 2-9 respectively.

Embodiment 10～20

[0039] In Examples 10-20, the same preparation method as in Example 1 was adopted, except that fly ash (purchased from Shaanxi Weihe Power Plant) was further added to slag, slaked lime and sodium sulfate. The weight ratio of each raw material is shown in Table 1. These raw materials were mixed together and stirred evenly to obtain the soil curing agent of Examples 10-20 of the present invention.

[0040] serial number

[0041] Table 1

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Abstract

A firming agent contains A) slag 43wt%-73wt%; B) alkali excitant 19w%-49wt%; C) halogenic excitant 1wt%-8wt%; D) flyash 7wt%-25wt%. Unconfined compressive strength for 7d of gusset soil with same percent firming agent is much higher than with same percent lime and equal with gusset soil with 32.5 Portland cement.

Description

technical field [0001] The invention relates to a soil curing agent, in particular to a soil curing agent using industrial waste for road construction. Background technique [0002] Soil reinforcement with curing agent is a technology that uses certain physical and chemical methods to adapt the physical and mechanical properties of soil to engineering requirements. In recent years, the domestically used inorganic materials for soil reinforcement mainly include lime reinforcement soil, cement reinforcement soil and fly ash (ie lime and fly ash) reinforcement soil. [0003] The curing agent based on lime and fly ash is relatively low in cost, but there are many disadvantages in application. For example, the early strength of solidified soil is not high, the integrity is poor, it takes a long time to form a certain strength, more than 7 days, and the adjustable range of strength is not large, and the compressive and tensile strength are low. In addition, the water stability a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/06C09K17/02C09K103/00
Inventor 沙爱民王振军胡力群翁优灵张嘎吱
Owner CHANGAN UNIV
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