Method for preparing laboratory grouting cement soil

A cement preparation and laboratory technology, applied in the field of civil engineering, can solve problems such as faults in cement-soil test blocks and weak interlayer bonding, and achieve the effect of enhancing compressive strength and stabilizing physical and mechanical properties.

Inactive Publication Date: 2017-10-13
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention is carried out in order to solve the above-mentioned problems, and the purpose is to solve the technical problems such as faults and interlayer bonding of the above-mentioned cement-soil test blocks in the production process, so that the cement-soil test blocks will not be faulted and the integrity will be improved. Stronger, so as to obtain a kind of good integrity, high performance grouting cement soil

Method used

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  • Method for preparing laboratory grouting cement soil
  • Method for preparing laboratory grouting cement soil

Examples

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Effect test

Embodiment 1

[0025] A preparation method of laboratory water grouting soil is realized through the following steps:

[0026] Step 1, after the soil is air-dried and crushed, pass through a 2mm sieve, then take 15kg of sieved soil, prepare wet soil according to the natural moisture content of 25%, that is, take 3.75kg of water, and leave it in a closed container;

[0027] Step 2, take the wet soil obtained in step 1, and the cement is 20% of the wet soil quality; the water-cement ratio is 0.5 to configure the cement grouting soil, and the cement grouting soil includes the following preparation steps:

[0028] Step 2-1, stir the wet soil after standing for 2min,

[0029] Step 2-2, pour 5.625kg of cement slurry into the mixer, mix the wet soil and cement slurry evenly to obtain cement grouting soil;

[0030] In step 3, the cement grouting soil obtained in step 2 is added to the prefabricated mold at one time, and the prefabricated test block is obtained by falling hammer compaction, and the ...

Embodiment 2

[0036] A preparation method of laboratory water grouting soil is realized through the following steps:

[0037] Step 1, after the soil is air-dried and crushed, pass through a 2mm sieve, then take 15kg of sieved soil, prepare wet soil according to the natural moisture content of 25%, that is, take 3.75kg of water, and leave it in a closed container;

[0038] Step 2, take the wet soil obtained in step 1, and the cement is 20% of the wet soil quality; the water-cement ratio is 0.5 to configure the cement grouting soil, and the cement grouting soil includes the following preparation steps:

[0039] Step 2-1, stir the wet soil after standing for 2min,

[0040] Step 2-2, pour 5.625kg of cement slurry into the mixer, mix the wet soil and cement slurry evenly to obtain cement grouting soil;

[0041] In step 3, the cement grouting soil obtained in step 2 is added to the prefabricated mold at one time, and the prefabricated test block is obtained by falling hammer compaction, and the ...

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Abstract

The invention discloses a method for preparing laboratory grouting cement soil. The cement grouting soil is composed of soil, cement and water. The preparation method comprises the following steps: airing and breaking soil, passing through a 2mm sieve, and preparing wet soil according to the natural moisture content of 25%; infiltrating the prepared soil in a sealed vessel overnight; blending cement accounting for 20% of the mass of the wet soil into cement paste according to a water cement ratio of 0.5, and pouring a mixture of the wet soil and the cement paste into a stirrer for stirring; weighing multiple parts of the mixture based on the weight of 825g per part; placing each part of the cement in a cylindrical mold with the diameter of 70mm and the height of 200mm, and compacting for 50 times by using a compacting hammer. The finally prepared test block is the cylinder with the diameter of 70mm and the height of 100mm, test block materials can be placed in the mold at a time, the cement soil test block with high integrity is formed due to one-time compaction, the integrity of the cement soil test block is enhanced, the quantity of fault fissures is reduced, and the compressive strength of the cement soil is improved.

Description

technical field [0001] The invention belongs to the field of civil engineering, and in particular relates to a preparation method of laboratory cement grouting soil. Background technique [0002] Soil is an ancient natural material consisting of three phases of soil particles, pore water and gas, and its mechanical properties are complex and greatly affected by the environment. The soil has poor tensile strength, low vibration resistance, is prone to cracks, and the soil is compressed when it is under pressure. These shortcomings affect the application of soil in some special fields. [0003] With the development of science and technology, cement grouting soil technology has become a rapidly developing new reinforcing soil technology. This technology mixes cement into the soil as a cementitious material, which can improve the performance of the soil in many ways, and greatly improve the tensile strength, deformation capacity and impact resistance of the soil. [0004] With...

Claims

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Application Information

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IPC IPC(8): G01N1/36
CPCG01N1/36G01N2001/366
Inventor 倪静张淑玲王达李枭李鑫李林起王曼
Owner UNIV OF SHANGHAI FOR SCI & TECH
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