UHPC를 활용한 건축용 외장 패널 개발 평가

Abstract

Ultra High Performance Concrete (UHPC) is a low water-binder ratio (W/B), high-performance chemical admixture (SP), mixing material and steel fiber, and steel fiber is a construction material that has excellent performance in liquidity and strength than regular concrete. In the study, the optimal ultra-high performance mortar was produced by grinding with vibrational wheat to increase the powder level of cement up to 6000cm2/g. Futhermore, due to the characteristics of UHPC physical evaluation experiments were conducted according to derive optimal chemical admixture as well as cement and mineral admixture, as well as chemical admixture. physical properties such as liquidity and strength of ultra-high performance mortar using crushed cement were tested, and the goal was to achieve the target properties without mixing steel fiber and other mineral admixture considering economic feasibility. The experimental results showed that the flow value for all combinations was at a target of 180±10mm with W/B 20% SP 0.8%, maximum compressive strength of 90MPa and flexural strength of 16.8MPa. UHPC was used to prepare construction external panels that can replace existing stone panels. In addition, the difference between the same chemical admixture input amount, the amount of the filler, the antifoaming agent and steel fiber Experiments have been conducted. As the evaluation, the evaluation were conducted, such as concrete compressive strength, flexural strength, impact strength, absorption rate, and frost resistance. Experimental results, compressive strength up to 119.6MPa, flexural strength of 22.7MPa, and absorption rate 1% In this case, impact strength and frost resistance evaluation were satisfied with outward observed all serene in the specification.