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Physical Properties of 50MPa and 80MPa Ternary High Strength Concretes before and after Concrete Pumping
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  • Physical Properties of 50MPa and 80MPa Ternary High Strength Concretes before and after Concrete Pumping
  • Physical Properties of 50MPa and 80MPa Ternary High Strength Concretes before and after Concrete Pumping
저자명
Lee. Bum-Sik,Kim. Seong-Deok,Jun. Myoung-Hoon,Park. Sung-Sik,Park. Su-Hee,Jung. Sang-Jin
간행물명
한국건축시공학회지
권/호정보
2012년|12권 4호|pp.451-459 (9 pages)
발행정보
한국건축시공학회
파일정보
정기간행물|ENG|
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이 논문은 한국과학기술정보연구원과 논문 연계를 통해 무료로 제공되는 원문입니다.
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기타언어초록

At the Korea Land and Housing Corporation(LH), concretes with high design strength of 50 MPa and 80 MPa that are composed only of ordinary Portland cement, blast furnace slag, and fly ash are developed. To determine whether the developed high strength concretes have the same properties when they are produced in batch plant(B/P) condition in the ready mixed concrete plant, and as existing high strength concretes, field tests are performed and material properties are evaluated. To investigate the material properties of the high strength concretes before and after pumping, compressive strength, flowability, air content, hydration temperature, pumping and compactability are evaluated. In field tests, before and after pumping, flowability satisfied the relevant criteria. In terms of air content, while it was slightly decreased after pumping, it satisfied the requirements. Hydration temperature criteria were satisfied, and compactability was excellent as well. The study found that the developed ternary high strength concretes have the same properties as existing high strength concretes. They can also be useful for the construction of high-rise buildings, as they are economical.