International Journal of Concrete Structures and Materials

Korea Concrete Institute (한국콘크리트학회)
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Low Carbon Concrete Prepared with Scattering-Filling Coarse Aggregate Process

  • Shen, Weiguo (State Key Laboratory of Silicate Materials for Architecture, Wuhan University of Technology) ;
  • Zhang, Chuan (Material Science and Engineering School, Wuhan University of Technology) ;
  • Li, Xinling (Material Science and Engineering School, Wuhan University of Technology) ;
  • Shi, Hua (Material Science and Engineering School, Wuhan University of Technology) ;
  • Wang, Guiming (Material Science and Engineering School, Wuhan University of Technology) ;
  • Tian, Xiaowu (Material Science and Engineering School, Wuhan University of Technology)
  • Received : 2013.12.06
  • Accepted : 2014.05.07
  • Published : 2014.12.30
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Abstract

The volume fraction of the coarse aggregate in the conventional plastic concrete is controlled relatively low to ensure a required workability. In this paper, a new type of coarse aggregate interlocking concrete with strength ranging from C30 to C80 was prepared with scattering-filling aggregate process. The strength of concrete prepared with this method increases obviously whereas the shrinkage decreases significantly, the cement dosage in the concrete decreased 20 % at the same time. The microhardness of the ITZ between the cement paste and scattering-filling aggregate is higher than that of the original aggregate, the ITZ become narrower and tighter also. The interlocking and more even distribution of the coarse aggregate and the water absorption of the addition of extra amount of coarse aggregates contribute to the strength and performance improvement of the concrete prepared with scattering-filling aggregate process.

Keywords

Acknowledgement

Supported by : Guangdong Transportation Ministry

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