ULTRA FASTENING HIGH PERFORMANCE GROUT COMPOSITION AND GROUT CONSTRUCTION METHOD USING THE SAME: Fid-Bau Portal

ULTRA FASTENING HIGH PERFORMANCE GROUT COMPOSITION AND GROUT CONSTRUCTION METHOD USING THE SAME

HA SANG WOOK / HWANG JAE NAM

The present invention relates to an ultra-fast hardening high-performance grout composition and a grout construction method using the same, and more specifically, to an ultra-fast hardening high-performance grout composition which is a cement mortar composition having ultra-fast hardening characteristics due to a high content of cement and including fiber reinforcing materials, such that high strength characteristics such as compressive strength and flexural strength and high toughness characteristics are exhibited while chemical resistance and corrosion resistance characteristics are excellent, thereby being suitable for application to structures requiring high strength and high toughness characteristics, such as high-rise buildings, dams, and long-span bridges, and at the same time, dramatically extending the life of concrete structures. The composition comprises, with respect to 40 parts by weight of cement, 1 to 20 parts by weight of calcium carbonate, 1 to 15 parts by weight of fiber reinforcing material, 1 to 10 parts by weight of high-performance reducing agent, 0.1 to 10 parts by weight of quartz fine powder, 1 to 10 parts by weight of calcium sulfoaluminate (CSA), 0.5 to 2.0 parts by weight of shrinkage reducing agent, 0.1 to 1.0 parts by weight of antifoaming agent, 1 to 5 parts by weight of gypsum, aggregate, and water.

본 발명은 초속경 고성능 그라우트 조성물 및 이를 이용한 그라우트 시공 공법에 관한 것으로서, 더욱 상세하게는 시멘트 모르타르 조성물로서 고함량의 시멘트 함유로 초속경성 특성을 갖고 섬유 보강재를 포함함으로써 압축강도 및 휨강도 등 고강도 특성과 고인성 특성을 발휘함과 동시에 내화학성, 내부식성 특성도 우수하여 고강도 및 고인성 특성이 요구되는 구조물, 예를 들어 초고층 건물, 댐, 장대교량 등에 적용되기 적합하고 동시에 콘크리트 구조물의 수명을 획기적으로 연장시킬 수 있는 고성능 그라우트 조성물 및 이를 이용한 그라우트 시공 공법에 관한 것이다.

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