不同抗剥落剂改性沥青表面自由能研究

Study on surface free energy of modified asphalt with different types of anti-stripping agents

为探究不同种类的抗剥落剂对沥青的黏附性和水稳定性的影响,主要研究了抗剥落剂对SBS改性沥青黏结剂表面自由能的影响。试验选用了三种抗剥落剂,按不同剂量与SBS改性沥青混合。通过光学接触角分析仪测量改性黏结剂的接触角,基于Good-van-Oss-Chaudhury理论计算了表面自由能分量和总表面自由能。研究结果表明,使用抗剥落剂的SBS改性沥青的表面自由能显著提高,体现良好的抗变形性能和黏附性能。

To investigate the effects of different types of anti-stripping agents on the adhesion and water stability of asphalt,this study primarily explored the impact of these agents on the surface free energy of SBS-modified asphalt binders.Three types of anti-stripping agents were selected and mixed with SBS-modified asphalt at various dosages.The contact angles of the modified binders were measured using an optical contact angle analyzer,and the surface free energy components and total surface free energy were calculated based on the Good-van-Oss-Chaudhury theory.The research findings indicate that the use of anti-stripping agents significantly increases the surface free energy of SBS-modified asphalt,reflecting enhanced resistance to deformation and improved adhesion properties.