Abstract
Shear and flexure performances of composite beams with different engineered cementitious composites (ECC) to self-consolidating concrete (SCC) depth ratio were investigated. Shear reinforced composite ECC/SCC beams showed similar behavior compared to their non-shear reinforced counterparts until the formation of diagonal cracks but exhibited higher ultimate shear resistance and ductility. Compared to the full depth SCC and full depth ECC beams, non-shear reinforced composite ECC/SCC beams showed higher ductility and energy absorption capacity. Composite ECC/SCC beams showed higher number of cracks with lower crack width because of fiber bridging and micro-cracking characteristics of ECC. Code based equations and other design specifications were conservative in predicting shear strength of shear/non-shear reinforced composite ECC/SCC beams. Composite ECC/SCC flexure beams showed satisfactory flexural performance compared to their full depth ECC and SCC counterparts.
Highlights
The use of new generation of High PerformanceConcretes (HPCs) such as Self-Consolidating Concrete (SCC), Engineered Cementitious Composite (ECC) and Ultra High Strength/Performance Concrete (UHSC/UHPC) can significantly improve the process of casting through self-consolidation as well as improve strength, ductility and durability of structures
It presents research conducted on beams/composite beams made of ECC, SCC and UHPC materials as well as shear/flexural design procedures of ECC, SCC and ECC/SCC beams/composite beams based on Codes and other existing design specifications
4.4 Summary In this chapter, the shear and flexure performance of ECC, SCC and composite ECC/SCC beams were described based on the experimental results
Summary
I hereby declare that I am the sole author of this thesis. This is a true copy of the thesis, including any required final revisions, as accepted by my examiners. I authorize Ryerson University to lend this thesis to other institutions or individuals for the purpose of scholarly research. I further authorize Ryerson University to reproduce this thesis by photocopying or by other means, in total or in part, at the request of other institutions or individuals for the purpose of scholarly research. I understand that my thesis may be made electronically available to the public. Md. Saiful Hasib Master of Applied Science, 2016 Department of Civil Engineering Ryerson University, Toronto, Canada
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