Hydraulic composite
AssigneeMBT Holding AG
InventorsTakao Furusawa, Kanji Higaki, Satoshi Okazawa
Life of this patent
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Abstract
Excavated earth from construction sites may be recycled as backfilling material or grout by incorporating it into a hydraulic composite. This is done firstly by blending excavated soil with a solidifying quantity of a hydraulic material and a fluidifying quantity of water and at least one first admixture selected from the group consisting of hydroxycarboxylic acids, phosphonic acid derivatives and saccharides and derivatives thereof, and blending the mixture thus created with a cement-dispersing agent at a time between the addition of the hydraulic material and the commencement of set of the hydraulic material. The hydraulic composites thus created have good fluidity, good final strength and low proneness to cracking.
Claims10
A method of manufacturing a hydraulic composite, comprising the steps of:
- A. blending an excavated soil with a solidifying quantity of a hydraulic material and a fluidifying quantity of water and at least one admixture selected from the group consisting of hydroxycarboxylic acids, phosphonic acid derivatives and saccharides and derivatives thereof, to create a first mixture;
- and
- B. blending a cement-dispersing agent with said first mixture before the commencement of set of the hydraulic material.
A grout which is a hydraulic composite which comprises excavated soil, a solidifying quantity of hydraulic material, a fluidifying quantity of water, at least one substance selected from the group consisting of hydroxycarboxylic acids, phosphonic acid derivatives and saccharides and derivatives thereof, and a cement-dispersing agent.
Dependencies are inferred from the claim text.