钢筋直径对混凝土试件早期应力应变影响的试验研究

Experimental Study on the Stress and Strain of Reinforced Concrete Effected by Different Rebar Diameter at Early Age

使用混凝土温度应力试验方法,利用华南地区某码头工程胸墙混凝土结构施工阶段温度发展历程作为养护条件,在100%约束度条件下进行素混凝土及配筋直径为12 mm、16 mm、20 mm、25 mm单根配筋混凝土试件的温度应力试验,测试各混凝土试件的应力及应变发展过程,探究在高约束度下配筋直径对混凝土试件温度应力、应变的影响,为配筋混凝土结构早期温度与收缩裂缝的控制提供试验参考。

The concrete temperature-stress tests were used to study the stress and strain development process of concrete specimen with different diameter of reinforcement( 12 mm,16 mm,20 mm,25 mm)at 100% restraint degree,which cured with the construction period temperature history of a wharf breast wall in south China. Studied the influence of the reinforcement diameter to the crack resistance of the reinforced concrete specimen under high restraint,provides experimental reference for the crack control of reinforced concrete structure at early age.