【摘要】 提出了一种混凝土表层性能的检测方法,该法基于弹性动力学中的Hertz接触理论,通过安装在钢球上的加速度传感器积分求取钢球敲击混凝土构件表面时的接触时间来推算混凝土表层的弹性模量,进而评价混凝土表层的状态,并且分析了该检测方法测试混凝土表层的深度范围。分别在水灰比为35%、50%、75%和100%的四个混凝土试块的上表面和侧壁进行试验验证,并与室内单轴压缩试验的结果对比,试验结果证明本方法能准确地判断出不同状态混凝土构件的表层性能。若通过一定试验的标定建立弹性模量与强度的关系,则可以进一步用来推算混凝土的强度。更多还原

【Abstract】 A concrete surface performance test method based on Hertz contact theory is proposed.By integrating the acceleration signal to achieve the contact time,the modulus of elasticity of concrete surface and the performance is deduced.Experiment is taken on 35%,50%,75%,100% W/C concrete samples’ top surface and side surface and compared with uniaxial compression,the test method has satisfied performance.If the relationship of modulus of elasticity and strength is built up from series of experiments,this test method has the potential to deduce concrete strength.更多还原