Title:
Shear Behavior of Self-Consolidating Concrete Beams
Author(s):
Chien-Hung Lin and Jiunn-Hung Chen
Publication:
Structural Journal
Volume:
109
Issue:
3
Appears on pages(s):
307-316
Keywords:
beam; self-consolidating concrete; shear strength; workability
DOI:
10.14359/51683744
Date:
5/1/2012
Abstract:
The purpose of this study is to investigate the shear behavior of self-consolidating concrete (SCC) beams. Two types of SCC were used. Type I SCC (SCC1) contained a greater amount of coarse aggregate, whereas Type II SCC (SCC2) contained a lesser amount of coarse aggregate. Twenty-four beam specimens were tested in this study. The first eight were normal concrete (NC) beams, the second eight were SCC1 beams, and the third eight were SCC2 beams. The parameters included the concrete strength, shear span-depth ratio (a/d), spacing of shear reinforcement, and strength of shear reinforcement. The results show that SCC1 beams have higher diagonal cracking strengths and ultimate strengths than NC beams, whereas SCC2 beams have less strength than NC beams. The diagonal cracking and ultimate strengths predicted by ACI 318-08 are conservative for this study. Both types of SCC beams have smaller crack widths than NC beams. The shear ductility of SCC1 beams is comparable with that of NC beams. The ACI limit on design yield strength of shear reinforcement may be increased for SCC1 beams based on crack width criterion. The overall performance of SCC1 beams is better than or as good as NC beams, whereas SCC2 beams have inferior structural performance than NC beams in many aspects.