Mechanism Analysis and Experimental Study of Emulsified Wax Curing Agent as an Isolation Layer for Concrete Pavement

作者：Yuan, Jianbo; Yao, Jialiang; Wang, Huicong^*; Lin, Yi

来源：Journal of Testing and Evaluation, 2019, 47(3): 2010-2025.

DOI：10.1520/JTE20180095

• concrete pavement
• emulsified wax curing agent
• transition layer
• nuclear magnetic resonance
• coulomb model
• contact angle
• concrete pavement

The functional mechanism of emulsified wax curing agent (EWCA) as an isolation layer of cement concrete pavement (CCP) was analyzed. Reducing the friction between layers and improving the hydrophobic function of concrete surface can weaken the combination of surface course and base course, as well as the formation of weak transition layer, which is generated during the construction of concrete undersurface course. After the cement concrete surface was sprayed with EWCA, its contact range was measured to be 97.3 degrees similar to 101.1 degrees in the contact angle test. With the nuclear magnetic resonance equipment, the study on the microstructure of the pavement slab of EWCA's isolation layer was carried out. The isolation layer of EWCA can reduce the porosity of transition layer and enhance its compatibility. The effect of EWCA on the interlayer performance of concrete pavement was explored by the interlayer bonding and friction coefficient tests with different amounts of EWCA and different texture depths of base course. The Coulomb model of interlayer bonding and frictional resistance was established, which preliminarily indicated the functional mechanism of CCP's emulsified isolation layer.

• 出版日期2019-5
• 单位长沙理工大学