EXPERIMENTAL COMPARISON OF SHEAR BEHAVIOR BETWEEN NORMAL AND SELF-COMPACTED CONCRETE BEAMS

Hussein Al-Janabi, Ahmed

	EXPERIMENTAL COMPARISON OF SHEAR BEHAVIOR BETWEEN NORMAL AND SELF-COMPACTED CONCRETE BEAMS
Journal of Engineering and Sustainable Development
Article 1, Volume 21, Issue 5, 2017, Pages 39-53
Author
Ahmed Hussein Al-Janabi
Abstract
This study deals with shear behavior between normal and self-compacted concrete beams. The experimental work includes design and testing of twelve reinforced concrete rectangular beams to study the effect of using self-compacted concrete (SCC) and normal concrete (NC) on the. shear behavior under two. concentrated load. All beams have same longitudinal and vertical steel ratio and cross sectional area of (17000) mm2. The tested. beams were divided into two. groups; SCC and NC beams. Each group. was divided into three series according to clear span. to effective depth ratio (ln/d), each. series consist of two compressive. strength of concrete ( ). It was found. that the beams which made from. SCC was more stiffer as compared. with the beam which made from NCC with same of the clear span. to effective depth ratio, longitudinal steel ratio, vertical steel ratio and relative compressive. strength. This equation is conservative. as compared with. for NC beams. tested while the ACI 318 equation. is more conservative as compared. with the for SCC beams tested. It was .found that the. ultimate shear strength of SCC .increased about 16.66%, 20.33%,20.88% when. the compressive strength ( ) increased from (29.39) to (42.1) MPa while the shear strength of NC .increased about 9.3%,12.9%,14.9% when the compressive strength ( ) increased from (27.8) to (39.1) MPa at clear span to. effective depth ratio (ln/d) (7.534),(6.164),(5.584) respectively. It was found that the shear strength of SCC increased about 12.5%, 18.75% when the. clear span to the effective depth ratio (ln/d) decreed from 7.534 to 5.48 at compressive strength ( ) 29.39 MPa while the shear strength of SCC increased. about 16.07%, 25% when the clear span to the effective depth ratio (ln/d) decreed from 7.534 to 5.48 at. compressive. strength ( ) 42.1 MPa however, the shear strength of NC increased about 18.02%, 23.84% when the clear span to the effective depth ratio (ln/d) decreed from 7.534 to 5.48 at compressive. strength ( ) 27.8 MPa.while the shear strength of NC increased about 21.9%, 30% when the. clear span to the effective depth ratio (ln/d) decreed from. 7.534 to 5.548 at compressive strength (
Keywords
Shear Strength; Self; compacted concrete beam; normal strength concrete beam

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