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Autogenous Shrinkage Property of High-Performance Graphenes Cement-Based Composites

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At present, high-performance cement-based composites are widely used, and they are prone to early cracking due to their high autogenous shrinkage stress. In this research, the uniformly dispersed GNPs were added into high-performance cementitious materials. The autogenous shrinkage of high-performance cementitious matrix materials with different incorporation of GNPs was also researched with water to cement ratio of 0.25, 0.30 and 0.35. According to hydration heat, hydration products, microstructure and porosity of GNPs cementitious matrix materials, the microcosmic mechanism for autogenous shrinkage was also investigated. It was testified that moderate addition of GNPs decreased the autogenous shrinkage of cement-based composites. Moreover, the autogenous shrinkage value was minimal after treatment with 0.10 wt% GNPs cement paste sample for 7 days, at the water to cement ratio of 0.35, and the depressed percentage of autogenous shrinkage reached 81.60% compared with the blank sample.
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Keywords: Autogenous Shrinkage; GNPs; High-Performance Cement-Based Composites; Mechanisms

Document Type: Research Article

Affiliations: 1: Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, Xi’an 710123, China 2: School of Civil Engineering, Dalian University of Technology, Dalian 116023, China 3: Department of Civil and Environmental Engineering University of Hawaii, Hawaii 96822, USA

Publication date: February 1, 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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