DOI QR코드

DOI QR Code

An approach of using ideal gradating curve and coating paste thickness to design concrete performance-(2) Experimental work

  • Wang, H.Y. (Department of Civil Engineering, National Kaohsiung University of Applied Sciences) ;
  • Hwang, C.L. (Department of Construction Engineering and Technology, National Taiwan University of Science and Technology) ;
  • Yeh, S.T. (Department of Construction Engineering and Technology, National Taiwan University of Science and Technology)
  • 투고 : 2009.09.04
  • 심사 : 2011.10.24
  • 발행 : 2012.07.25

초록

The ideal gradating curve is used in this study to estimate densified aggregate blended ratio and total surface area of aggregate, there by under assigned paste amount of concrete, and coating paste thickness can then be deduced. Four groups of concrete mixtures were prepared and the corresponding concrete properties, such as workability, compression strength, ultrasonic velocity, surface resistivity and chloride ion penetration, were measured and finally the results are interpreted in terms of "coating thickness". The result shows as the coating thickness of the concrete is higher than critical one, the coating thickness on aggregate does affect the workability, and whatever workability is required the superplasticizer can be adjusted to achieve the demand workability. Under a fixed paste quality at the same age, coating paste thickness is inversely proportional to the concrete properties, especially as the coating thickness gets thinner.

키워드

참고문헌

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피인용 문헌

  1. Genetic algorithm in mix proportion design of recycled aggregate concrete vol.11, pp.3, 2013, https://doi.org/10.12989/cac.2013.11.3.183