SEMIHYDRATED GYPSUM AGENT FOR IMPROVING WATER-CONTAINING SOIL

PROBLEM TO BE SOLVED: To obtain the subject improving agent comprising semihydrated gyp sum as a main component and incinerated sludge ash as a subsidiary component, capable of shortening a time for preparing improved soil, also contributing to the recycling of sludges, excellent in safety, gas perm...

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Bibliographic Details
Main Author MATSUNAGA MASATERU
Format Patent
LanguageEnglish
Published 06.01.1998
Edition6
Subjects
ADHESIVES
ARTIFICIAL STONE
CEMENTS
CERAMICS
CHEMISTRY
CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT
COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
CONCRETE
DYES
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS
HYDRAULIC ENGINEERING
INORGANIC CHEMISTRY
LIME, MAGNESIA
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
REFRACTORIES
SLAG
SOIL SHIFTING
TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
TREATMENT OF NATURAL STONE
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:PROBLEM TO BE SOLVED: To obtain the subject improving agent comprising semihydrated gyp sum as a main component and incinerated sludge ash as a subsidiary component, capable of shortening a time for preparing improved soil, also contributing to the recycling of sludges, excellent in safety, gas permeability, water permeabil ity and plant growability, and useful for solidifying water-containing soil to improve the soil. SOLUTION: This semihydrated gypsum agent used for improving water- containing containing soil and useful for solidifying the water-containing soil such as construction sludge to improve the soil comprises (A) semihydrated gypsum (CaSO4 .1/2H2 O)[e.g. the semihydrated gypsum obtained by thermally treating crystalline gypsum (CaSO4 .2H2 O) at a temperature of 100-160 deg.C] as a main component and (B) incinerated sludge ash (e.g. the ash obtained by incinerating sewage sludges) as a subsidiary component preferably in amounts of 60-80wt.% and 20-40wt.%, respectively.
Bibliography:Application Number: JP19960177168