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Shear Behavior of High Performance Concrete Beam Mixed With High Volume Pozzolanic Material under Cyclic Load
High Performance Concrete
The purpose of the study is to investigate the shear behaviors of high performance concrete (HPC) beams with high-volume pozzolanic material under cyclic loading. Twelve full-scale specimens were made for testing. Parameters considered include the admixtures of concrete, the shear-span to effective depth ratio (a/d), the compression reinforcement ratio and the amount of shear reinforcement. Results of the experiment indicate the effects of shear strength on these beams and comparisons with corresponding ACI Code are also studied. Results of the shear strength of cement replaced by fly ash and slag agree with that from ACI Code formula. The high-volume cement HPC has the best performance with regard to the resistance to shear force, followed by high-volume slag HPC and the high-volume fly ash HPC in that order. Both shear cracking strength and ultimate shear strength for all specimens increase with the decrease of the shear-span to effective depth ratio as well as the increase of the compression reinforcement ratio and the amount of the shear reinforcement. For HPC beams, results also show the conservativeness of ACI Code with respect to the resistance to shear force.
|Appears in Collections:||土木工程學系所|
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