对于赤泥沥青胶浆的沥青–集料界面粘附性研究

Research on Interfacial Adhesion between Asphalt and Aggregate for Red Mud Asphalt Mortar

摘要: 为了证明使用赤泥替代矿粉作为填料的可行性，达到加大赤泥的使用量、保护环境的目的，对赤泥沥青胶浆与集料之间的粘附性进行研究。本文通过使用SEM测试对本研究中使用的填料的微观结构进行表征，从微观上分析填料对于沥青胶浆–集料粘结界面强度的影响机理，并使用PosiTest AT-A全自动附着力测试仪对沥青胶浆–集料的粘结界面强度进行了测试，结果证明使用少量造纸白泥与烧结法赤泥混合粉体替代矿粉，增强了沥青胶浆与集料之间的粘附性能以及水稳定性。

Abstract: In order to prove the feasibility of using red mud instead of mineral powder as filler, increase the amount of red mud and protect the environment, the adhesion between red mud asphalt mortar and aggregate was studied. In this paper, the microstructure of the fillers used in this study was characterized by SEM, and the influence mechanism of fillers on the interfacial strength of asphalt mortar aggregate was analyzed from the microscopic point of view, and posttest was used AT-A automatic adhesion tester was used to test the bond interface strength between asphalt mortar and aggregate. The results showed that using a small amount of paper-making white mud and sintering red mud mixed powder instead of mineral powder, the adhesion performance and water stability between asphalt mortar and aggregate were enhanced.