Abstract
The effects of the cross-sectional area of the reinforcement, the cross-sectional size of the specimen and the strength of ultra high performance concrete with coarse aggregate (UHPC-CA) on the flexural capacity of UHPC-CA beams with HRB500 grade high-strength reinforcement are analyzed by orthogonal test. The results show that the influence of various factors on the flexural capacity of high-strength reinforced UHPC-CA beams is in the order of specimen section size > reinforcement section area > UHPC-CA strength. With the increase of the three factors, the bending bearing capacity is improved in different degrees. The section size of the specimen is a general significant factor of the bending capacity, while the section area of the reinforcement and the UHPC-CA strength are not significant factors.
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