期刊
CEMENT & CONCRETE COMPOSITES
卷 109, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2020.103559
关键词
Reduced graphene oxide; Cement composites; Dispersion; Thermal properties; Temperature gradient
资金
- National Natural Science Foundation of China [51772129, 51702118, U1806222]
- startup funding for high-level talents (University of Jinan) [5111008395]
- Project of Shandong Province Higher Educational Science and Technology Program [J18KA016]
- National Key Research and Development Program [2016YFB0303505]
- 111 Project of International Corporation on Advanced Cement based Materials [D17001]
- RFBR [N.19-33-50020]
For modern concrete technology, how to control the generation and propagation of thermal cracks is still a challenge. The large temperature gradient between the internal and external surface is primarily responsible for the cracks. The present study successfully develops a new avenue to minimize the temperature difference of cement composites by introducing reduced graphene oxide (rGO). The effective dispersion of rGO in cement matrix is achieved by applying the polycarboxylate dispersant. The incorporation of rGO enhances the thermal properties of mortar, resulting in a lower temperature difference. The uniformity of calculated heat flux and early-age shrinkage of cement composites are improved by adding rGO. Moreover, the mechanical strength slightly increases at 3 days up to doping 0.6 wt % rGO and does not display significant enhancement after 28 days. Obtained results demonstrate doping rGO is a promising approach to reduce the thermal stress and restrain the development of thermal cracks.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据