MORTAR COMPOSITION AND MANUFACTURING METHOD THEREFOR, AND REPAIR AND REINFORCEMENT METHOD OF CONCRETE STRUCTURE

• Main Authors: TAKAGI TOMOKO, KOBAYASHI KIYOSHI, YANAI SHUJI, WATANABE ARIHISA
• Format: Patent
• Language: English; Japanese
• Published: 10.10.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; PERFORMING OPERATIONS; PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL,e.g. PLASTER; REFRACTORIES; SLAG; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING CEMENT, CLAY, OR STONE

To provide a mortar composition used for repairing or reinforcing a concrete structure by a plasterer method, capable of suppressing generation of sagging after application and forming a cured article having sufficient strength.SOLUTION: There is provided a mortar composition used for repairing or reinforcing a concrete structure by a plasterer method, containing a binder, water, a fine aggregate, an additive, a fiber for reinforcement, and a fluidity adjustment material, in which the fluidity adjustment material contains a clay mineral, content of the clay mineral is 7 to 21 kg for 1 mof a composition excluding the fiber for reinforcement and the fluidity adjustment material from the mortar composition, and mortar flow value in a mortar flow test defined in JIS R5201 is 110 to 140 mm.SELECTED DRAWING: None 【課題】左官工法によりコンクリート構造物を補修又は補強するために用いられ、塗布後のダレの発生を抑制することができると共に、十分な強度を有する硬化物を形成可能なモルタル組成物を提供すること。【解決手段】結合材と、水と、細骨材と、混和剤と、補強用繊維と、流動調整材料とを含有する、左官工法によるコンクリート構造物の補修又は補強に用いられるモルタル組成物であって、流動調整材料が粘土鉱物を含み、粘土鉱物の含有量が、モルタル組成物から補強用繊維及び流動調整材料を除いた組成物１ｍ３に対して７〜２１ｋｇであり、ＪＩＳ Ｒ５２０１に規定されたモルタルフロー試験によるモルタルフロー値が１１０〜１４０ｍｍである、モルタル組成物。【選択図】なし