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Tension Stiffening Behavior of Strain-Hardening Cement Composite (SHCC) Ties in Monotonic and Cyclic Loadings

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Abstract:

Strain-hardening cement composite (SHCC) is a superior class of fiber reinforced cement composites (FRCCs) which exhibit multiple cracks and strain-hardening behavior under direct tension. This study investigated the tensile behavior of reinforced SHCC ties in monotonic and cyclic tension. The effect of loading scheme, tie cover-to-bar diameter ratio (c/d b ) and cement composites’ ductility were the principal variable considered. Each specimen had a square cross-section dimension and length of 500 mm. A 16 mm diameter deformed bar was embedded centrally to give reinforcement ratio of 6.5 percent. The strain-hardening and multiple cracking characteristic of SHCC improves tension stiffening in reinforced cement composite because SHCC are able to carry tensile forces at the cracks. For tension ties Type A with smaller c/d b , pre-and post-cracking response leans towards the response of bare bar. As the c/d b decreases, reduction in tension stiffening takes place. Cyclic loading did not have a significant effect on either tension stiffening or cracking behavior for the concrete tie tested.

Document Type: Research Article

DOI: https://doi.org/10.1166/asl.2012.3977

Publication date: 2012-07-01

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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