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针对偶联改性玄武岩纤维沥青胶浆现有研究现状和不足,采用1.0%的硅烷偶联剂KH-550溶液对玄武岩纤维表面偶联处治,制备了纤维掺量为0.3%、0.6%及0.9%偶联改性玄武岩纤维沥青胶浆,通过动态剪切流变试验测得复数模量、相位角、车辙因子评价高温流变性能,通过弯曲梁流变试验测得劲度模量、劲度变化率评价低温流变性能。试验结果表明,偶联改性玄武岩纤维提高了沥青胶浆抵抗高温剪切变形的能力,但对低温性能改善有限。
Aiming at the current research status and insufficiency of the coupling modified basalt fiber asphalt cement mortar, the basalt fiber surface was treated with 1.0% silane coupling agent KH-550 solution, and the fiber content was 0.3%, 0.6% and 0.9 % Coupling modified basalt fiber asphalt mortar, through the dynamic shear rheological test to determine the complex modulus, phase angle, rutting factor rheological properties of high temperature, bending beam bending test measured stiffness modulus, stiffness Rate of change for evaluating low temperature rheological properties. The experimental results show that the coupling of modified basalt fiber improves the ability of asphalt mortar to resist the high temperature shear deformation, but the improvement of low temperature performance is limited.