橡胶颗粒沥青混合料低温力学性能的研究

RESEARCH ON TEMPERATURE MECHANICAL PROPERTIES OF GRANULATED CRUMB RUBBER ASPHALT MIXTURE

结合马歇尔试验对最佳沥青用量进行确定,采用低温劈裂实验并以抗拉强度、拉伸应变、破坏劲度模量,对外掺法连续密级配橡胶颗粒沥青混合料的低温力学性能进行评价。实验表明:在低温环境中,随着温度的逐渐降低,抗拉强度、拉伸应变和破坏劲度模量3种指标的变化率较大,力学性能变化显著。

The papper does the research on the low temperature mechanical properties for asphalt rubber particles.The three indicators tensile strength,tensile strain,failure stiffness modulus rubber particles in experimental low-temperature splitting are used to evaluate asphalt mixture at low temperature mechanical properties.The experiments show that： the tensile strength,tensile strain and destruction of stiffness modulus greater rate of change of the three indices.indicating that the temperature in the low temperature mechanical material paragraph performance changes significantly.