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폴리프로필렌 섬유를 혼입한 레미콘의 강도 및 비파괴 시험
남기성 ( Nam Ki Sung ),윤동채 ( Youn Dong Chae ),윤여훈 ( Yoon Yeo Hoon ),성찬용 ( Sung Chan Yong ) 한국농공학회 2003 한국농공학회 학술대회초록집 Vol.2003 No.-
This study is performed to evaluate the strength and non-fracture test of the ready mixed concrete(RMC) using polypropylene. The slump is reached in 8±2cm of each RMC using polypropylene or without polypropylene, air content is reached in 4.5±1.5%, the chloride content is below 0.3kg/m<sup>3</sup>. The compressive strength of RMC not using polypropylene is appeared over 210kgf/ cm<sup>2</sup> at the curing age 7 days and 239 kgf/ cm<sup>2</sup> at the curing age 28 days. The compressive strength of RMC using polypropylene is appeared over 188kgf/ cm<sup>2</sup> at the curing age 7 days and 238kgf/ cm<sup>2</sup> at the curing age 28 days. The dynamic modulus of elasticity of RMC not using polypropylene is appeared over 298x10<sup>3</sup>kgf/cm<sup>2</sup> at the curing age 7 days and 342X10<sup>3</sup> kgf/cm<sup>2</sup> at the curing age 28 days. The RMC using polypropylene is appeared over 284 x 10<sup>3</sup>kgf/ cm<sup>2</sup> at the curing age 7 days and 238 x 10<sup>3</sup>kgf/ cm<sup>2</sup> at the curing age 28 days. 1he pulse velocity of RMC not using polypropylene is appeared over 4,198mjs at the curing age 7 days and 4,382m/s at the curing age 28 days. The RMC using polypropylene is appeared over 4,182mjs at the curing age 7 days and 4,342m/ s at the curing age 28 days.