Flexural Strengthening with Externally Poured Ultra High Toughness Cementitious Composites

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The flexural behavior of reinforced concrete (RC) members strengthened with postpoured Ultra High Toughness Cementitious Composites (UHTCC) was investigated in this paper. The flexural behavior, failure mode and crack propagation during loading process of composite specimens were studied, and their structural behavior was also compared to that of original members. The experimental results showed that post-poured UHTCC materials enhanced flexural bearing capacity and toughness of existing concrete members. And introducing UHTCC material into strengthening enabled the composite specimens sustain the loading at a larger deflection without failure. It also revealed that post-poured UHTCC layer dispersed larger cracks in upper concrete into multiple tightly-spaced fine cracks, which prolonged the appearance of harm surface cracks and improved the durability of existing structures.

Info:

Periodical:

Materials Science Forum (Volumes 675-677)

Edited by:

Yi Tan and Dongying Ju

Pages:

579-582

DOI:

10.4028/www.scientific.net/MSF.675-677.579

Citation:

N. Wang and S. L. Xu, "Flexural Strengthening with Externally Poured Ultra High Toughness Cementitious Composites", Materials Science Forum, Vols. 675-677, pp. 579-582, 2011

Online since:

February 2011

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$35.00

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