Ground solidifier composition using activated slag and pozzolanic reaction and manufacturing method thereof

Abstract

PURPOSE: A ground-solidifying material composition for improving soft ground composition is provided to restrain problem generation of secondary environmental contamination due to strong alkali by reducing alkalified degree and to be able to manufacture a cured material with a dense structure. CONSTITUTION: A ground-solidifying material composition comprises 45-65 weight% of blast furnace slag powder, 10-40 weight% of flyash of which calcium oxide content is 40% or more, generated at combustion of fuel of a cogeneration plant, 5-30 weight% of desulfurized gypsum of which calcium oxide content is 50% or more and sulfur oxide content is 10% or more, and 1.5-10 weight% of calcium oxide content is 50% or more and 1.5-10 weight% of slaked lime as a byproduct of which calcium carbonate content is 50% or more. The ground-solidifying material composition is cured by a pozzolan reaction due to sulfate and a latent hydraulic reaction.

Description

technical field [0001] The present invention relates to a soil stabilizer composition for soft subsoil using a physical property improver for soft subsoil and a manufacturing method thereof. Fly ash expanders (high-calcium expanders) with a calcium oxide (CaO) content of 40% or more produced during fuel incineration in integrated heating and power plants using petroleum coke as fuel, by-product burnt lime A mixture of at least three or more of the group consisting of papermaking sludge incineration materials, a soil stabilizer composition for improving soft subsoil produced by reacting slag and volcanic ash, and a production method thereof. Background technique [0002] Usually, when the construction is delayed due to the fragile state of the subsoil, the subsoil improvement method of chemically consolidating the inside of the subsoil has been used in the past. The physical property improver for soft subsoil used here mainly uses clay slurry at the beginning, and then uses ...

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Problems solved by technology

[0003] However, this existing cement mortar suspension that has been used as a physical property improver for soft subsoil in the past is as follows: figure 1 As shown, even if the injection pressure is increased, it is impossible to penetrate into the fine gaps. Therefore, alkali injection agents with excellent workability and construction effects are often used. Prohibited for use except in emergencies

[0004] Therefore, a consolidation method of forming a silicic acid gel by mixing solutions such as calcium chloride and lactate with water glass is currently used, but it faces problems such as leaching

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