Experimental Study of Environmental Conditions on In-Situ Engineered Cementitious Composites-Steel Deck Interface.

Autor: Wu, Shuyin, Sun, Xiaoyin, Yang, Jun, Yang, Ruochong, Zhu, Jipeng
Předmět:
Zdroj: Applied Sciences (2076-3417); 3/15/2020, Vol. 10 Issue 6, p2123, 14p
Abstrakt: In this study, engineered cementitious composite (ECC) was used as a deck paving for long-span bridges. The feasibility of using an epoxy adhesive to achieve wet-bonding between a steel deck and cast-in-place ECC was evaluated. The shear and pull-off tests were conducted to evaluate the effects of freeze-thaw cycles and hydrothermal aging on interfacial properties. The test results indicate that the interfacial strength decreases with an increase in the number of freeze-thaw cycles and the duration of hydrothermal aging. Based on an inclined shear test, a criterion for interface failure under the combined action of shear and compression is also proposed. Wet-bonding technology might promote the application of ECC in the surfacing system for orthotropic steel deck bridge and further extend the service life of a bridge structure. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index