PLASTIC GROUT MATERIAL AND WATER CUTOFF CONSTRUCTION METHOD THEREWITH

• Main Authors: NAKAJIMA YUSUKE, TANAKA TOSHIYUKI, HASHIMOTO MANABU, MURONOI TOSHIYUKI, YANAI SHUJI
• Format: Patent
• Language: English; Japanese
• Published: 06.10.2016
• 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; 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; 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

PROBLEM TO BE SOLVED: To provide a plastic grout material and a water cutoff construction method therewith which can show enough water cutoff effect under severe environment conditions with flowing water of high flow rate or high temperature that conventional well-known plastic grout materials is difficult to cutoff water enough.SOLUTION: In a plastic grout material, a main material cement contained in a cement milk material is low heat Portland cement, fly ash contained in the cement milk material is reformed fly ash which is a high quality fly ash equivalent of Japanese industrial standard II class, and underwater inseparable chemical admixture contained in the cement milk material is acrylic amide-2-methylpropanesulfonic acid based thickening agent.SELECTED DRAWING: None 【課題】従来公知の可塑性グラウト材では十分な止水が困難であった大きな流速、高い水温の流水が存する過酷な環境条件下においても、十分な止水効果を発揮しうる可塑性グラウト材及びそれを用いて行う止水工法を提供すること。【解決手段】セメントミルク材に含有される主材セメントを、低熱ポルトランドセメントとし、セメントミルク材に含有されるフライアッシュを、ＪＩＳ規格ＩＩ種相当の高品質フライアッシュである改質フライアッシュとし、セメントミルク材に含有される水中不分離性混和剤を、アクリルアミド−２−メチルプロパンスルホン酸系増粘剤とした可塑性グラウト材とする。【選択図】なし