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依据表面能理论,采用柱状灯芯技术和躺滴法分别测定不同含水率时水泥混凝土与SBS沥青的表面能参数,并通过计算粘附功,分析了不同含水率时水泥混凝土与SBS沥青的粘附性。在此基础上,对水泥混凝土处于不同含水率时的层间粘结性能进行了验证。结果表明:在含水率为0%时粘附功最大;随着含水率增大,粘附功逐渐变小;随着含水率降低,防水粘结层抗剥离性能提高,当含水率降至0.5%后,层间粘结性能对含水率已不敏感;随着含水率的降低,抗剪强度增大,但当含水率降至1.0%后增加的幅度并不显著。
According to the theory of surface energy, the surface energy parameters of cement concrete and SBS asphalt were measured respectively by columnar wick technique and drop-dropping method. By calculating the adhesion work, the adhesion of cement concrete and SBS asphalt at different water contents was analyzed Sex. On this basis, the interlayer bonding performance of cement concrete at different moisture content was verified. The results show that the adhesion work is the largest when the moisture content is 0%, and the adhesion work becomes smaller with the increase of water content. With the decrease of moisture content, the anti-stripping performance of waterproof adhesive layer increases. When the moisture content drops to 0.5 The interlaminar bond strength is not sensitive to the water content. With the decrease of water content, the shear strength increases, but the increase is not significant when the water content decreases to 1.0%.