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Modified low-carbon raw soil cement and preparation method thereof

A kind of permanent raw soil and cement technology, applied in the field of modified raw soil cement and its preparation, can solve the unsolved problems of low fluidity of freshly mixed raw soil materials, consumption of large cementing material resources, unfavorable recycling and other problems, and achieve Conducive to environmental protection, protection of the construction environment, and low production costs

Inactive Publication Date: 2015-02-04
TIANJIN CHENGJIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of this raw soil cement are: 1. The utilization rate of raw soil is low, and it needs to consume a large amount of cementing material resources; 2. It contains a large amount of strong alkaline materials, which has an impact on the environment and is not conducive to recycling; 3. Solve the low fluidity problem of freshly mixed raw soil materials; ④ Higher production costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Take ordinary clay and pass it through a 0.075mm sieve to remove impurities. Take 50% of clay, 40% of cement, 10% of expansion agent and 2% of lignin water reducer in the total amount of three components by weight; the cement is ordinary portland cement of 42.5 strength grade.

[0035] Put clay, cement, and expansion agent into a container and mix well; then add water and water reducer, the water-material ratio is 0.25, and continue to stir evenly to obtain raw soil cement mixture, which is then poured and vibrated to shape; the poured molded The mixture is poured into the mould, and the mixture in the mould is densely formed by vibrating, and then stopped for 4 hours, and the mold is removed; the raw soil cement of the present invention is obtained.

Embodiment 2

[0037] Take by weight 55% of sieved clay, 35% of cement, 10% of gypsum and 2% of the total amount of the aforementioned three components of naphthalene-based water reducing agent;

[0038] All the other are operated with embodiment 1, and water-material ratio is 0.21, gets raw soil cement of the present invention.

Embodiment 3

[0040] Take 50% of sieved clay, 45% of cement, 5% of expansion agent and 1% of the total amount of the above three components of water reducer by weight; compounded;

[0041] All the other are operated with embodiment 1, and water-material ratio is 0.25, gets raw soil cement of the present invention.

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PUM

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Abstract

The invention discloses modified low-carbon raw soil cement and a preparation method thereof. The raw soil cement is prepared from the following raw materials by weight percentage: 40-60% of clay, 20-45% of cement, 0-15% of gypsum, 0-12% of expanding agent and a water reducing agent which is 1-2wt% of the above raw materials; the preparation method can reduce the carbon emission, saves resources and energy, is an energy-saving and environment-friendly material, is different from the existing building materials, has no influence on environment when being discarded, can enter a natural circulation system when being crushed and dispersed in soil, can be utilized in quantity or can contain poor-quality soil, and has good crack resistance and water resistance.

Description

technical field [0001] The invention relates to a modified raw soil cement and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] Raw soil building materials use soil as the main raw material, which can be widely used in construction projects after being processed by different methods. The raw materials of raw soil building materials are widely distributed, easy to use, and low in cost; the biggest advantage of raw soil building materials is their contribution to energy conservation and environmental protection. After being discarded, they can be crushed and scattered into the soil and enter the natural circulation system. While it is used as a resource, it does not cause any hidden dangers and sequelae to the environment. This advantage is impossible for other building materials. [0003] The strength and water resistance of raw soil materials are low. In the past, people mainly used tamping methods to prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B28/14C04B14/10
Inventor 曲烈王渊杨久俊刘洪丽
Owner TIANJIN CHENGJIAN UNIV
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