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Anti-cracking soil stabilizer and using method

A soil curing agent and anti-cracking technology, which is applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problem of easy cracking of solid soil curing agent, and achieve the effect of preventing cracks and environmental protection costs

Inactive Publication Date: 2021-03-16
张夏艇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of the fact that liquid curing agents in the prior art must be used in conjunction with cement in practical applications, it is difficult for solid curing agents to solve the problem of cracks after curing. All curing agents have the technical problem of high cost and are difficult to replace the currently used materials. The invention provides an anti-cracking soil curing agent. By replacing the high-cost cement and using construction waste to turn waste into treasure, it not only solves the problem of construction waste disposal, but also solves the problem of the cost of the soil curing agent. The soil stabilizer solves the problem that the solid soil stabilizer is easy to crack through a specific formula, and has wide applicability in the field of soil stabilization

Method used

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  • Anti-cracking soil stabilizer and using method
  • Anti-cracking soil stabilizer and using method
  • Anti-cracking soil stabilizer and using method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment one: anti-cracking soil curing agent of the present invention

[0026] The soil solidifying agent of the present invention includes slag powder, desulfurized gypsum, β-type hemihydrate gypsum, fly ash, construction waste powder, potassium salt or ammonium salt and an activator. The slag powder used is the molten slag with calcium aluminosilicate as the main component obtained when the ironworks smelt pig iron in the blast furnace.

[0027] Specifically, the formula used in this embodiment is as follows:

[0028]

[0029]

[0030] In the above formula, the construction waste powder used is different in formulas one, six, seven, and eight. The construction waste powder (1) in formula one is 12kg cement fine powder and 15kg red brick fine powder. The construction waste powder (2) in formula six is ​​10kg cement fine powder and 10kg red brick fine powder. The construction waste powder (3) in formula seven is 15kg cement fine powder and 20kg red brick fine...

Embodiment 2

[0031] Embodiment two: the using method of anti-cracking soil solidifying agent of the present invention

[0032] The invention provides a method for using an anti-cracking soil curing agent, comprising the steps of:

[0033] (1) Mix the raw materials according to the ratio and use a ball mill to fully grind and mix them into a curing agent product with a fineness of about 400 mesh.

[0034] (2) Measure the water content of the target soil to be used, and determine the optimal water content according to the soil water content, so that the cuttings are easy to mix and not too thin to solidify or too dry to mix evenly.

[0035] (3) After the curing agent product in step (1) is mixed with water, it is mixed with soil, and then the mixture is repeatedly kneaded with an excavator to make the curing agent fully contact with the mixed soil.

Embodiment 3

[0036] Embodiment 3: performance test of anti-cracking soil stabilizer

[0037] When detecting the performance of the anti-cracking soil solidifying agent of the present invention, the strength of the solidified type is detected with reference to the technical index of the cement type JX-GH. The test results are as follows:

[0038]

[0039]

[0040] It can be seen from formulas 1, 6, 7 and 8 of the above examples that the composition of construction powder has a certain influence on the compressive strength and setting time. From 1 and 4, it can be seen that potassium salt and ammonium salt have corresponding effects , can make the final compressive strength and solidification time meet the requirements, compared with potassium salt is better. This may be because the potassium salt has a clear relationship with the influence of montmorillonite in the soil, so that the amount added is far greater than the corresponding demand of montmorillonite to avoid the influence of...

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Abstract

The invention provides an anti-cracking soil stabilizer. The anti-cracking soil stabilizer is prepared from slag powder, desulfurized gypsum, beta-hemihydrate gypsum, coal ash, construction waste powder, sylvite or ammonium salt and an excitant. According to the anti-cracking soil stabilizer and the using method, after 10% of the stabilizer is added into target soil and then the soil is doped, thecompressive strength (unconfined compressive strength) of the stabilized soil can be high and can reach 6 MPa (national standard is 0.9 MPa) in 7 days, and the engineering application requirements inthe aspects of road base layer laying, site hardening and the like can be met; and cement is not required to be added, soil cracks can be prevented, and the method is an environment-friendly and low-cost solidification technology.

Description

technical field [0001] The invention belongs to the field of environmental protection engineering materials, and specifically the invention belongs to the field of soil curing agents. Background technique [0002] Soil stabilizer is a new type of energy-saving and environmental protection engineering material synthesized from various inorganic and organic materials to stabilize various soils. For the soil to be reinforced, according to the physical and chemical properties of the soil, it only needs to be mixed with a certain amount of curing agent, and the required performance index can be achieved after mixing and compacting. At present, there are many kinds of soil curing agent products in the domestic market, which can be divided into liquid soil curing agent and powder soil curing agent according to the form. According to the composition, it can be divided into lime cement-based inorganic curing agents, slag-based dry powder soil curing agents, high-clustering ionic soi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B18/16C04B111/34
CPCC04B28/147C04B18/16C04B2111/343C04B2111/00732C04B2201/50C04B18/141C04B22/145C04B18/08C04B22/08C04B22/147C04B22/064C04B22/062C04B22/10Y02W30/91
Inventor 付炜张夏艇张俊锋
Owner 张夏艇
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