Method for reinforcing soil by using soil solidification solution

A technology for strengthening soil and soil, which is applied in the field of civil engineering and construction materials, can solve problems such as environmental damage and large energy consumption, and achieve the effect of improving strength and durable engineering characteristics

Inactive Publication Date: 2019-05-14
NORTHWEST A & F UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the process of raw material mining and processing, these materials need to consume a lot of energy, emit a lot of greenhouse gases and dust, and cause great damage to the environment.

Method used

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  • Method for reinforcing soil by using soil solidification solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1: the test of soil solidification solution preparation and reinforcement coarse-grained soil

[0023] Soil sample: selected from Weihe river sand.

[0024] Equipment and materials: carbon dioxide is selected from by-products in the process of extracting oxygen and nitrogen from air, limestone is used for calcium carbonate, stainless steel is used for pressure vessels, and tap water is used for water.

[0025] Preparation method of soil solidification solution: crush limestone with a ball mill, pass through a 100-mesh sieve, put the powder into a stainless steel pressure-resistant container 8, add tap water, install the top cover 7, open the first valve 3, and make the carbon dioxide gas storage bottle 2 The carbon dioxide 1 in the medium is continuously passed into the stainless steel pressure vessel 8 . At the beginning of the test, the safety valve 6 should be opened to exhaust the air inside the stainless steel pressure vessel 8, and an open flame should...

Embodiment 2

[0032] Embodiment 2: the test of soil solidification solution preparation and reinforcement fine-grained soil sample

[0033] Soil sample: selected from the damming soil of a dam in Qinghai.

[0034] Equipment and materials: carbon dioxide is selected from by-products in the process of extracting oxygen and nitrogen from air, calcium carbonate is artificially synthesized analytically pure calcium carbonate, pressure vessels are made of stainless steel, and water is tap water.

[0035] Preparation method of soil solidification solution: Grind artificially synthesized analytically pure calcium carbonate in a mortar, pass through a 100-mesh sieve, put the powder into a stainless steel pressure-resistant container 8, add tap water, install the top cover 7, open the first The valve 3 enables the carbon dioxide 1 in the carbon dioxide gas storage bottle 2 to continuously flow into the stainless steel pressure vessel 8 . At the beginning of the test, the safety air valve 6 should be...

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Abstract

The invention discloses a method for reinforcing soil by using a soil solidification solution. The method for reinforcing the soil by using the soil solidification solution includes the steps of putting calcium carbonate powder in a high pressure resistant container, adding water and then continuously introducing carbon dioxide gas thereto to form a saturated aqueous solution of calcium bicarbonate under the action of stirring, continuously spraying or pouring the obtained aqueous solution of the calcium bicarbonate on the surface or inside of the soil, allowing the calcium bicarbonate to decompose and form amorphous calcium carbonate with cementation function when water infiltrates into the soil for migration, and cementing soil particles into a whole to improve engineering properties such as strength, water stability and durability of the soil and meet the needs of engineering construction. The method for reinforcing the soil by using the soil solidification solution has the advantage of being suitable for various fields such as rock and soil reinforcement, dam and soil structures for anti-seepage and plugging, sand liquefaction prevention, heavy metal pollution soil treatment, earth and stone brick heritage building restoration, and concrete crack repair.

Description

technical field [0001] The invention belongs to the technical field of civil engineering and building materials, and relates to a soil modification method for building civil engineering, water conservancy engineering, transportation engineering, ecological environment engineering, and cultural relic restoration engineering, and in particular to a method for reinforcing soil with a soil solidification solution. Background technique [0002] With climate warming, ecological environment deterioration and serious energy shortage, how to make full use of local building materials in the field of civil engineering construction to achieve the purpose of reducing energy consumption and curbing environmental degradation is a major issue facing civil engineers. At present, lime, cement, fly ash or other types of soil stabilizers are mostly used as soil reinforcement materials. After these materials are mixed with the soil, rolled, and cured, they can effectively increase the strength of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/06E02D3/12C09K103/00
Inventor 樊恒辉刘竞王俊杰白雪松张路杨秀娟高策刘刚
Owner NORTHWEST A & F UNIV
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