Ultra-high rapid hardening and ultra-early strong polymer modified concrete containing organic and inorganic phase transition material and a road reparing method therewith

• Main Authors: HAN, GYU YOUNG, PARK, SEUNG HO, LIM, HONG BEOM
• Format: Patent
• Language: English; Korean
• Published: 26.02.2019
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE; FIXED CONSTRUCTIONS; LIME, MAGNESIA; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR; METALLURGY; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The present invention relates to an ultra-rapid hardening and ultra-high early-strength type polymer modified concrete mixed with an organic/inorganic phase transition material, and to a method for repairing a concrete structure using the same, and more particularly, to a polymer modified concrete composition including mixing water, an aggregate, and a polymer, and a binder in which silica fume and organic and inorganic phase transition materials which absorb heat when a phase transition is performed on an ultra-rapid hardening cement or ultra-high early-strength type cement which has rapid and high initial hydration heat, are mixed. Accordingly, the temperature crack generation in the ultra-rapid hardening cement or the ultra-high early-strength type cement which has rapid and high initial hydration heat, can be prevented by using the polymer modified concrete composition mixed with mixing water, the aggregate, and the polymer, and the binder including 0.1 to 3.0 parts by weight of an organic phase transition material having 65 to 95°C of a phase transition temperature, and 35 to 70 cal/g of a latent heat flux, 0.1 to 5.0 parts by weight of an inorganic phase transition material, 3 to 10 parts by weight of silica fume, and 85 to 95 parts by weight of an ultra-rapid hardening cement or ultra-high early-strength type cement. 본 발명은 유/무기계 상전이물질을 혼합한 초속경 및 초조강 폴리머개질 콘크리트와 이를 이용한 콘크리트 구조물의 보수방법에 관한 것으로, 초기 수화발열이 빠르고 높은 초속경시멘트 또는 초조강시멘트에 상전이 시 열을 흡수하는 유기계 및 무기계 상전이물질과 실리카퓸을 혼합한 바인더와 배합수, 골재, 폴리머를 포함하는 폴리머개질 콘크리트 조성물에 대한 것이다. 상전이 온도가 65~95℃이며, 잠열량이 35~70cal/g인 유기계 상전이물질 0.1~3.0중량부, 무기계 상전이물질 0.1~5.0중량부, 실리카퓸 3~10중량부, 초속경시멘트 또는 초조강시멘트 85~95중량부를 포함하는 바인더와 배합수, 골재 및 폴리머가 혼합된 폴리머개질 콘크리트 조성물을 사용함으로써, 초기 수화발열이 빠르고 높은 초속경시멘트 또는 초조강시멘트의 온도균열 발생을 방지할 수 있는 효과가 있다.