The Study on the Early Age Cracking due to the Addition of Silica Fume into Concrete and the Trouble-Shooting Strategy

Abstract:

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This study is mainly to investigate the early age cracking due to the addition of silica fume (SF) into concrete and to propose Densified Mixture Design Algorithm (DMDA) method as a trouble-shooting strategy. Specimens with different water-to-binder ratio (W/B) and silica fume content were prepared with ACI concrete (W/B = 0.23, 0.35 and 0.47; SF content = 0%, 10%, 20% and 30%) and DMDA concrete (W/B = 0.23, 0.35 and 0.47; coating paste thickness t = 5, 15 and 25 μm). Adding silica fume to the concrete system to replace part of cement may increase the crack intensity, and the rate of water absorption; but reduce the heat of hydration. DMDA method as a problem-shooting technique shows to have a better performance in reducing the crack intensities up to 41% with W/B = 0.23 and the better durability index than that of ACI method.

Info:

Periodical:

Advanced Materials Research (Volumes 295-297)

Edited by:

Pengcheng Wang, Liqun Ai, Yungang Li, Xiaoming Sang and Jinglong Bu

Pages:

824-829

DOI:

10.4028/www.scientific.net/AMR.295-297.824

Citation:

C. L. Hwang et al., "The Study on the Early Age Cracking due to the Addition of Silica Fume into Concrete and the Trouble-Shooting Strategy", Advanced Materials Research, Vols. 295-297, pp. 824-829, 2011

Online since:

July 2011

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$35.00

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