@Article{jrm.2021.014878,
AUTHOR = {Zhihang Wang, Jinyu Xu, Xin Meng, Conigjin Zhu},
TITLE = {Effect of Ultraviolet Aging on the Bonding and Tensile Properties of Polymer-Cement Composite},
JOURNAL = {Journal of Renewable Materials},
VOLUME = {9},
YEAR = {2021},
NUMBER = {6},
PAGES = {1157--1168},
URL = {http://www.techscience.com/jrm/v9n6/41728},
ISSN = {2164-6341},
ABSTRACT = {In this paper, the specimens of polymer-cement composites after 1 d, 7 d, 15 d, and 30 d aging without aging and
UV aging are subjected to fixed extension test and tensile test. By observing the mode of the composite in the
fixed-elongation test, and measuring the elastic recovery rate, tensile strength, elongation at break, peak tensile
strain, tensile toughness and pre-peak tensile toughness of the composite, the effects of UV aging on the bonding
and the tensile properties of the composite were studied. And combining with scanning electron microscopy
experiments, the micro-mechanism of the effect of ultraviolet aging on the properties of composite was analyzed.
The results showed that the composite had a good bonding property, and no damage was observed after UV aging
for 30 days. The UV aging increased the elastic recovery rate and peak tensile within a certain range. The elastic
recovery rate and peak tensile strain of the composite increased by 6.60% and 23.55% respectively after UV aging
for 15 days. Therefore, the UV aging could enhance the tensile property and the tensile energy consumption performance of the composite. The tensile strength of the composite increased by 65.36% after UV aging for 30 days.
The tensile toughness and pre-peak tensile toughness of the composite were increased by 43.29% and 101.83%
respectively after UV aging for 15 days. The elongation at break of composite decreased continuously after UV
aging due to the photo-oxygen reaction, as well as secondary hydration reaction and cross-linking curing reaction
of cement.},
DOI = {10.32604/jrm.2021.014878}
}