Study on the Action Mechanism of Bitumen Emulsion and Aggregate
The paper describes the action mechanism of bitumen emulsion and aggregate, the charge test of aggregate and reaction heat test between aggregate and bitumen emulsion are used to analyze adsorption mechanism. The results show that at moisture condition alkaline aggregate generally carry positive electric charges, while acidic aggregate negative charges. Interaction between aggregate and bitumen emulsion can be affected by affinity of the materials, extent of chemical reaction and electrical property on their surface, which can determine the mechanics properties of the mixtures. The adhesive coefficient can be used to evaluate adhesive property between aggregate and bitumen emulsion, Kad is the larger, the adsorption strength between aggregate and bitumen emulsion is the larger.
Guangfan Li, Yong Huang and Chaohe Chen
H. Y. Liu and Y. Q. Jia, "Study on the Action Mechanism of Bitumen Emulsion and Aggregate", Advanced Materials Research, Vols. 250-253, pp. 3039-3043, 2011