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选取立方体和Z形试件作为新老混凝土粘结试件 ,在多功能三轴试验系统上对百余块粘结试件的复合受力性能进行试验研究。考察粘结面粗糙度、新混凝土强度、拉 (压 )应力对粘结强度的影响规律 ,探索新老混凝土粘结复合受力的强度特性。
Cube and Z-shaped specimens were chosen as the new-old concrete bonding specimens, and the composite stress behaviors of more than 100 bonded specimens were tested on a multifunctional triaxial test system. The effect of bonding surface roughness, new concrete strength and tensile (pressure) stress on the bond strength was investigated to explore the strength characteristics of the bond strength between the old and new concrete.