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Soft soil hardener preparing from high calcium ash, desulfuration gypsum and cement

A desulfurization gypsum and curing agent technology, which is applied in the direction of solid waste management, sustainable waste treatment, climate sustainability, etc., can solve the problems of high investment cost, large cement, consumption, etc., and achieve good impermeability, high cost performance, low cost effect

Inactive Publication Date: 2006-02-22
何国荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the deep cement mixing method has been widely used in the Guangdong Delta area, but it consumes a large amount of cement, and the investment cost is high. It is designed as a cement-soil pile of 1.2MPa, and the cement content is 13%-15%. The cement content is more than 20%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: wet method, this moment quicklime is 0%

[0012] Take 15kg of desulfurized gypsum, 30kg of high-calcium ash and 50kg of cement, add 48kg of water to make the water-cement ratio close to 0.5, forcefully stir in a mixer to form a uniform slurry, and then carry out spraying and deep mixing construction.

Embodiment 2

[0013] Example 2: dry method

[0014] Take 5kg of quicklime and 15kg of desulfurized gypsum, mix and roll, let the quicklime absorb the free water in the desulfurized gypsum, make a special admixture after forced mixing, add 50kg of cement powder before construction, force it to mix evenly, and then carry out powder spraying and deep mixing construction.

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PUM

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Abstract

The invention discloses a soft soil solidifying agent whose constituents comprises (by weight ratio) high calcium ash 25-40%, desulfurized gypsum 10-25%, lump lime 0-10% and cement 40-60%.

Description

technical field [0001] The invention relates to a soft soil curing agent for construction, highway and port engineering, in particular to a soft soil curing agent made of high-calcium ash, desulfurized gypsum and cement, referred to as HGC type soft soil curing agent. Background technique [0002] The high lime fly ash produced by burning sub-bituminous coal in power plants has a high content of f-CaO, and its hydration rate is slower than that of cement, which will cause problems with the stability of cement concrete. European standard EN450 stipulates that it is used as The f-CaO content in the fly ash of the concrete admixture shall not exceed 1%, but the high-calcium ash contains a large amount of glass microspheres with high CaO content, which is a kind of gelling substance with high activity. In the presence of water and CaSO 4 2H 2 Under the action of O stimulant, it can be self-condensed and can also be combined with some active substances in soft soil, SiO 2 , Al ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/08C04B22/14C04B22/06
CPCY02W30/91
Inventor 何国荣
Owner 何国荣
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