期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2020
卷号：491
期号：1
DOI：10.1088/1755-1315/491/1/012038
语种：English
出版社：IOP Publishing
摘要：Reduced Graphene oxide (rGO) is a 2D nanoplane fiber that contains highly reactive hydroxyl, epoxide, carboxyl, and carbonyl functional groups. These oxygen bearing functional groups increases solubility in cement matrix and serve as a nucleation agent for C-S-H crystals. rGO can serve as a reinforcing material in cement composites and can improve the mechanical properties of cement-based materials. This paper presents the mechanical properties of concrete modified with 0.03%, 0.05% and 0.07% reduced grapheme oxide by the weight of the OPC. Compressive strength of concrete was found to be increased by rGO especially the early age strength due the hydration acceleration and reinforcement of cement matrix and strong adhesion between aggregate and cement matrix by rGO. The mechanical properties, compressive strength, split tensile strength, flexural strength and modulus of elasticity are found to be maximum at 0.05% rGO replacement by the weight of the cement. The properties were found to be decreased at 0.07% of rGO content due to the formation of the agglomerated structure and poor dispersion of rGO.
