CLC number: TU528
On-line Access: 2018-12-03
Received: 2018-06-29
Revision Accepted: 2018-09-14
Crosschecked: 2018-11-10
Cited: 0
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Citations: Bibtex RefMan EndNote GB/T7714
Jin-tao Liu, Yang Yang, Chun-ping Gu, He-dong Li. Influence of dry heating regime on the mechanical and shrinkage properties of reactive powder concrete[J]. Journal of Zhejiang University Science A, 2018, 19(12): 926-938.
@article{title="Influence of dry heating regime on the mechanical and shrinkage properties of reactive powder concrete",
author="Jin-tao Liu, Yang Yang, Chun-ping Gu, He-dong Li",
journal="Journal of Zhejiang University Science A",
volume="19",
number="12",
pages="926-938",
year="2018",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.A1800394"
}
%0 Journal Article
%T Influence of dry heating regime on the mechanical and shrinkage properties of reactive powder concrete
%A Jin-tao Liu
%A Yang Yang
%A Chun-ping Gu
%A He-dong Li
%J Journal of Zhejiang University SCIENCE A
%V 19
%N 12
%P 926-938
%@ 1673-565X
%D 2018
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1800394
TY - JOUR
T1 - Influence of dry heating regime on the mechanical and shrinkage properties of reactive powder concrete
A1 - Jin-tao Liu
A1 - Yang Yang
A1 - Chun-ping Gu
A1 - He-dong Li
J0 - Journal of Zhejiang University Science A
VL - 19
IS - 12
SP - 926
EP - 938
%@ 1673-565X
Y1 - 2018
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1800394
Abstract: The influence of the curing temperature (150 °C, 200 °C, 250 °C, and 300 °C) and curing time (4 h, 8 h, and 12 h) on the mechanical properties and shrinkage development of reactive powder concrete (RPC) was studied, and a curing regime for improving its mechanical properties is proposed. Test results show that the compressive and flexural strengths of specimens increase at curing temperatures of 200 °C to 250 °C, but decrease at curing temperature of 300 °C. Meanwhile, shrinkage measurement results indicate that the ultimate shrinkage of high-temperature cured RPC at 50% relative humidity (RH) is lower than in the control group. Scanning electron microscope results reveal that high-temperature curing improves the microscopic pore structure of RPC and makes the interfacial transition zone denser. Furthermore, the dry-heat curing regime can accelerate the cement hydration process, and tobermorite or xonotlite was found to be one of the major crystalline hydrates at high temperature.
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