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材料的阻尼是衡量材料本身减振性能的主要指标。采用自由振动法测试得到了一批橡胶混凝土小变形阻尼比的基础性数据。试验结果表明:所采用的阻尼比测试方法和试验过程是可靠的;对同类型的混凝土,混凝土的阻尼比随橡胶掺量的增加而增大;混凝土的弹性模量随橡胶掺量的增加而降低;橡胶胶掺量在4.5左右时,可获得阻尼比、弹性模量和抗压强度均较高的混凝土。
Material damping is a measure of the material itself damping performance of the main indicators. A series of basic data of small deformation and damping ratio of rubber concrete were obtained by free vibration test. The test results show that the damping ratio test method and test process adopted are reliable. The damping ratio of concrete and concrete with the same type increases with the increase of rubber content. The elastic modulus of concrete increases with the increase of rubber content Lower; when the content of rubber adhesive is about 4.5, concrete with high damping ratio, high elastic modulus and compressive strength can be obtained.