Preparation method of foundation reinforcement material

A foundation reinforcement and additive technology, applied in the field of building materials, can solve the problems of waste of resources, unreasonable utilization of resources, environmental and social hazards, etc., to reduce processing costs, enhance unconfined compressive strength, and reduce environmental pollution. Effect

Active Publication Date: 2015-12-09
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS +3
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

Through years of research and development, a series of building material products have come out, but these used solid wastes are estimated to only account for 50% of the total waste, and the rem

Method used

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  • Preparation method of foundation reinforcement material
  • Preparation method of foundation reinforcement material
  • Preparation method of foundation reinforcement material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025]

[0026] The above components are fully stirred and mixed evenly, sent to the finished product warehouse, and then packed after passing the test. The process route is shown in Figure 1.

[0027] Performance testing:

[0028] 1. Specimen strength and impermeability test:

[0029] Raw materials: According to the distribution characteristics of the foundation soil of general sites in Shanghai, three typical natural soils were selected and mixed with two cementing materials to process them into reinforced soil. Three typical natural soil types are: the ② layer of brownish-yellow silty clay, the ③1st layer of muddy silty clay and the ③2nd layer of sandy silt.

[0030] The two cementing materials are the foundation reinforcement material in this example and P42.5 ordinary silicate cement, the water-cement ratio is 0.45, and the addition amount is 13%.

[0031] Sample preparation: The unconfined compressive strength sample is prepared by using a split test mold with an in...

Embodiment 2

[0055]

[0056] The above components are fully stirred and mixed evenly, sent to the finished product warehouse, and then packed after passing the test. The process route is shown in Figure 1.

[0057] Test: The soil foundation reinforcement material (B#) and 42.5 grade ordinary silicon cement (A#) in this example are used in the construction technology of three-axis mixing piles, the mixing amount is 20%, the water-cement ratio is 1.5, and the sinking speed is 0.5 , the lifting speed is 1.0, the flow rate is 327, and the test age is 28 days. The structural strength of A# and B# mixing piles is shown in the following table:

[0058]

[0059]

[0060] It can be seen from the table that the structural strength of the mixing pile using soil foundation reinforcement materials is obviously higher than that of the mixing pile using 42.5 grade ordinary silicon cement, and the strength of the 20% cemented powder mixing pile is 20% The strength of ordinary silicon cement-soil mi...

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Abstract

The invention relates to the technical field of building materials and particularly relates to a preparation method of a foundation reinforcement material. The preparation method includes the following steps: mixing and stirring following raw materials, comprising: 30-70% of mineral slag micro powder, 5-20% of steel slag micro powder, 5-20% of fly ash, 5-10% of by-product from desulfuration, 2-20% of cement and 0-4% of an additive; sending the mixture to a finish product storeroom, and packaging the foundation reinforcement material if the material is qualified. In the invention, the foundation reinforcement material is employed as a soil solidifying material. When compared with a sample produced from conventional cement, a sample produced from the foundation reinforcement material is significantly increased in strength and is significantly improved in unconfined compression strength. The foundation reinforcement material is good in anti-permeability, can be used for replacing cement completely and can be used for reinforcing soil body. The raw materials are all selected from solid wastes from steel production, electricity and such industries, so that the foundation reinforcement material is green and environment-friendly. The processing technology is very low in energy consumption, is very less in environment pollution, is low in cost, can effectively reduce foundation treatment cost and is significant in economic benefit.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for preparing foundation reinforcement materials. Background technique [0002] In the foundation reinforcement of residences, workshops and cargo yards, the temporary enclosure structure and water-stop curtain of deep foundation pits, and the embankments of water conservancy projects, construction methods such as mixing piles and rotary grouting piles are commonly used. The soil is stirred to form a foundation structure with a certain strength, so as to improve the bearing capacity of the foundation and the performance of retaining soil and water. Lime or cement is often used as a solidification material in the base and subbase of road engineering, and in the silt-promoting projects of riverbank tidal flats to improve the bearing capacity of the foundation. However, the strength of reinforced soil formed by ordinary cement and lime is relatively low, especia...

Claims

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Application Information

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IPC IPC(8): C04B28/00
Inventor 单卫良张沈裔李明波王振兴解子军朱敏涛李阳
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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