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针对桥梁连续式弹塑性伸缩缝胶结料必须具备良好的拉伸性能、粘结性能及抗破坏性能,开发了新型模具,对开发的新材料和国外同类产品进行拉伸试验对比,分别研究了弹塑性沥青粘结长度、老化时间、温度、拉伸速度对胶结料特性的影响,结果表明:沥青的粘结长度越大,最大伸长率越小,粘结强度先增大后减小,破坏模量越大;老化时间越长,最大伸长率越小,粘结强度越小,破坏模量越小;温度越低,最大伸长率越小,粘结强度越大,破坏模量越大;拉伸速度越快,最大伸长率越小,粘结强度越大,破坏模量越大。
In view of the continuous elastic-plastic expansion joints of the bridge, it is necessary to have good tensile properties, bonding properties and anti-sabotage properties. A new type of mold has been developed. Tensile tests on new materials developed and similar foreign products are carried out. The results show that the bigger the bond length of asphalt is, the smaller the maximum elongation is, the stronger the bond strength first increases and then decreases, and the damage The bigger the modulus is, the longer the aging time is, the smaller the maximum elongation is, the smaller the bond strength is, the smaller the damage modulus is. The lower the temperature is, the smaller the maximum elongation is, the larger the bond strength is. Large; tensile faster, the smaller the maximum elongation, the greater the bond strength, the greater the damage modulus.