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Straw reinforced cement soil and application

A technology for cement-soil and cement-soil mixing piles is applied in the field of cement-soil mixing piles, which can solve problems such as damage and restrict the application of cement and soil, and achieve the effects of reducing environmental pollution, saving labor, and accelerating construction progress.

Pending Publication Date: 2021-02-09
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, it has been widely used in other fields. Similar to concrete, the mechanical properties of soil are improved after adding cement, but the characteristics of soil suitable for plant growth are also destroyed, which greatly restricts the use of cement soil in new conditions. Applications

Method used

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  • Straw reinforced cement soil and application
  • Straw reinforced cement soil and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0035] This example provides a wheat straw cement soil, which can be used for cement soil mixing piles, and contains the following components: wheat straw, length 10mm, 0.2 parts, semicircle, 15 parts cement, 57 parts dry soil, 24 parts water, 3.8 parts calcium oxide , when the prepared wheat straw cement soil was cured for 7 days, the compressive strength and flexural strength were 1.11MPa and 2.27MPa respectively, and when the cured for 28 days, the compressive strength and flexural strength were 1.34MPa and 4.23MPa respectively.

Embodiment 1-2

[0037] This example provides a rice straw cement soil, which can be used for cement soil mixing piles, and contains the following ingredients: rice straw, length 10mm, 0.2 parts, semicircle, 15 parts cement, 57 parts dry soil, 24 parts water, 3.8 parts calcium oxide , the prepared rice straw cement soil, when curing for 7 days, the compressive strength and flexural strength are: 0.83MPa and 1.86MPa, respectively, and when curing for 28 days, the compressive strength and flexural strength are: 1.21MPa and 3.61MPa, respectively.

Embodiment 1-3

[0039]After removing the wheat straw component in this weight ratio, the prepared cement soil contains the following components: 15.5 parts of cement, 58 parts of dry soil, 24 parts of water, and 3.8 parts of calcium oxide. The strength and flexural strength are respectively: 0.75MPa and 1.86MPa. After curing for 28 days, the compressive strength and flexural strength are respectively: 1.15MPa and 3.57MPa.

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Abstract

The invention discloses straw reinforced cement soil and an application thereof. The straw reinforced cement soil comprises the following components by weight: 10-20 parts of cement, 50-60 parts of dry soil, 15-30 parts of water, 2.5-4.5 parts of a curing agent, and 0.1-1.5 parts of straw, wherein the straw length of 5-25mm, and there is 0.1-1.5 parts of straw, and the straw shape comprises a whole circle, a semicircle and a quarter circle. The experiment research is employed, the relation between the length, reinforcement rate, section shape and the like of the straw and the basic mechanicalproperties of the straw cement soil is obtained respectively, the material weight ratio of the straw cement soil is proposed, environmental pollution caused by straw incineration is effectively reduced, straw fibers can serve as reinforcement materials, the breaking strength and compressive strength of the straw cement soil are effectively improved, and the straw cement soil is applied to the construction process of the cement soil mixing pile, so that the comprehensive material cost of construction can be reduced, and resource consumables are saved.

Description

technical field [0001] The invention belongs to the technical field of cement-soil mixing piles, and in particular relates to straw-reinforced cement-soil and its application, in particular to cement-soil mixing piles. Background technique [0002] Cement soil is an engineering material developed in recent years. It mainly improves the physical and mechanical properties of the soil by adding cement in different weight ratios to the soil, so as to meet the needs of the project. Due to its good engineering and economy, etc. Due to its advantages, it is widely used in foundation reinforcement engineering, anti-seepage engineering, foundation pit enclosure, etc., but conventional cement soil cannot meet the increasing environmental protection and ecological requirements. At the same time, it also has disadvantages such as low tensile strength and poor crack resistance. Therefore, it is especially necessary to improve the mechanical properties of cement and soil to meet engineeri...

Claims

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Application Information

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IPC IPC(8): C04B28/00
CPCC04B28/00C04B2201/50C04B18/24C04B14/10C04B22/064
Inventor 李富荣郝子进殷勇黄颖常素萍徐桂中
Owner YANCHENG INST OF TECH