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首页> 外文会议>RILEM Proceedings PRO 40; International RILEM Conference on the Use of Recycled Materials in Buildings and Structures vol.2; 20041108-11; Barcelona(ES) >SHEAR BEHAVIOR OF REINFORCED RECYCLED CONCRETE BEAMS
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SHEAR BEHAVIOR OF REINFORCED RECYCLED CONCRETE BEAMS

机译：再生混凝土梁的抗剪性能

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摘要

Shear behavior of reinforced recycled concrete (RRC) beams are investigated experimentally in order to contribute to establishing design method for shear by comparing with that of reinforced concrete beam made of virgin aggregate. Ten reinforced concrete beams are prepared using manmade recycled fine and coarse aggregates as well as those from site. The major factors are combination of aggregates, water to cement ratios, effective depth and usage of expansive additive. Experimental results indicate that RRC beams without stirrups is decreased in shear strength by 20% and empirical design code overestimates the shear strength of recycled aggregate concrete. On the contrary, shear strength of RRC beams with stirrup is almost the same as those of RC beams in experimental results, while modified truss theory underestimates the ultimate shear strength of beams by 30% on the condition that shear failure is defined by yielding of stirrup.
机译：实验研究了钢筋再生混凝土（RRC）梁的抗剪性能，以便与原始骨料制成的钢筋混凝土梁相比，有助于建立剪力设计方法。使用人工回收的细骨料和粗骨料以及现场的骨料制备了十根钢筋混凝土梁。主要因素是集料，水灰比，有效深度和膨胀添加剂的使用的组合。实验结果表明，无箍筋的RRC梁的抗剪强度降低了20％，而经验设计准则高估了再生骨料混凝土的抗剪强度。相反，带箍筋的RRC梁的抗剪强度与试验结果几乎相同，而修改的桁架理论低估了梁的极限抗剪强度30％，条件是梁的抗剪破坏是由箍筋屈服确定的。 。

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