A dredged sludge industrial waste residue composite solidified light soil and a roadbed layered filling construction method using same

Abstract

A dredged sludge industrial waste residue composite solidified light soil and a roadbed layered filling construction method thereof are provided; the method is characterized by comprising the following steps: (1), solidified light soil raw materials are selected, specifically, dehydrated dredged sludge, waste tire rubber powder and an industrial waste residue composite solidifying agent are selected; (2) solidified light soil mixing proportion design refers to the mass ratio of the dehydrated dredged sludge to the waste tire rubber powder to the industrial waste residue composite solidifying agent to the water, wherein the mixing ratio (volume ratio) of the dehydrated dredged sludge to the waste tire rubber powder is 80: 20-60: 40, and the mixing amount of the composite solidifying agent is 4-6%; and (3), roadbed layered filling construction: the solidified light soil roadbed construction comprises construction preparation, mixing, paving, rolling compaction, quality inspection, maintenance and slope protection. The method effectively solves the problem of recycling production and domestic solid waste, reduces the consumption of natural earthwork, and has the effects of saving resources, protecting the environment and the like.

Description

technical field [0001] The invention belongs to the technical field of special soil treatment and roadbed construction in geotechnical engineering, and in particular relates to a construction method for dredging silt industrial waste residue composite solidified soil and roadbed layered filling. Background technique [0002] With the continuous development of my country's economy, in various production and life, the output of solid waste is increasing year by year. For example, inland waterway and coastal dredging projects have produced a large amount of dredging silt; discarded tires are increasing rapidly with the total number of cars; the discharge of phosphogypsum (industrial waste generated by ammonium phosphate production) is the third in the world; every ton of soda ash produced To discharge 0.3 tons of alkali slag (industrial waste produced by the ammonia-soda method of alkali production). If the above-mentioned solid wastes are only dumped and landfilled without re...

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Problems solved by technology

If the above-mentioned solid waste is only dumped and landfilled without reasonable treatment, it will not only occupy a large amount of land resources, but also pollute the environment, destroy the ecology, and restrict the sustainable development of society.

[0003] On the other hand, my country's highways and urban roads are undergoing a large number of new construction, reconstruction and expansion. During the construction, a large number of natural earth and rocks are excavated, resulting in a shortage of building materials and environmental damage.

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