CEMENT ADMIXTURE FOR LONG DISTANCE PUMPING, PLASTICITY INJECTION MATERIAL, AND INJECTION METHOD

• Main Authors: KUSHIHASHI TAKUMI, MIZUSHIMA KAZUYUKI, TANAKA HIDEHIRO
• Format: Patent
• Language: English
• Published: 16.01.2014
• 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; CONCRETE; DYES; EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; LARGE UNDERGROUND CHAMBERS; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MINING; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; REFRACTORIES; SHAFTS; SLAG; 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; TUNNELS

PROBLEM TO BE SOLVED: To provide an inexpensive cement admixture for long distance pumping and injection method in which curing and precipitation of cement milk are prevented in long distance piping, the cement milk can remain in the piping during night (daytime in night construction), thereby works of disposal of A material in the piping and cleaning of the piping or the like can be largely reduced, and a construction period and manpower or the like can be reduced.SOLUTION: A cement admixture for long distance pumping includes dextrin and a cellulose derivative, and a plasticity injection material includes: A material that is cement milk; and B material and C material that are plasticization materials, wherein the A material includes cement and the cement admixture for long distance pumping, the B material includes aluminum sulfate, and the C material includes an acryl ester copolymer emulsion, and an injection method comprises the step of mixing 150 to 5,000 pts.vol. of the A material, 50 pts.vol. of the B material, and 50 pts.vol. of the C material just before injection in the plasticity injection material.