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http://dx.doi.org/10.1007/s40069-014-0080-5

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)
Publication Information
International Journal of Concrete Structures and Materials / v.8, no.4, 2014 , pp. 309-313 More about this Journal
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
coarse aggregates; scattering-filling aggregate process; aggregate interlocking concrete; strength; shrinkage; interfacial transition zone;
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