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发布时间：2019-03-11

论文类型：期刊论文

发表时间：2017-10-01

发表刊物：COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING

收录刊物：EI、SCIE、Scopus

卷号：101

页面范围：143-150

ISSN号：1359-835X

关键字：Graphene; Reinforced cement; Mechanical properties; Analysis

摘要：The mechanical property and underlying enhancing mechanisms of cementitious composites filled with multi-layer graphenes (MLGs) are investigated in this paper. Research results indicate that the addition of MLGs can achieve an enhancement of 54% in compressive strength and a reinforcement of 21% in flexural strength to cementitious composites, respectively. The strengthening effects can be attributed to extensive distribution network of MLGs inside matrix, decreasing ratio of water to cement and self-curing caused by water adsorption and release of MLGs, reducing primary cracks due to MLGs presence, strong bonding between MLGs and matrix, and lowering orientation index of calcium hydroxide crystal in hydration products of cementitious composites. It is therefore concluded that MLGs are effective nanoscale fillers for reinforcing cementitious composites. (C) 2017 Elsevier Ltd. All rights reserved.