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Article

Efficient Use of Graphene Oxide in Layered Cement Mortar

1
College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2
Guangdong Province Key Laboratory of Durability for Marine Civil Engineering, College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518060, China
*
Author to whom correspondence should be addressed.
Academic Editor: Doo-Yeol Yoo
Materials 2022, 15(6), 2181; https://doi.org/10.3390/ma15062181
Received: 9 February 2022 / Revised: 7 March 2022 / Accepted: 14 March 2022 / Published: 16 March 2022
(This article belongs to the Topic Fiber-Reinforced Cementitious Composites)
Graphene oxide (GO) has been found to be an attractive nanomaterial to improve the properties of cementitious composites. However, the use of GO in the industry is limited by its high cost. To achieve a higher cost/performance ratio, GO can be strategically applied in certain parts of cementitious composites structure according to the principle of functionally graded materials. In this study, graded distribution of GO in cement mortar was achieved by sequentially casting a fresh GO-incorporated cement layer on another cement mortar layer. The mechanical properties, especially flexural strength, of layered cement mortar were found to be dependent on the GO content, the delay time, and the interface formed due to layering fabrication. With the GO incorporated in the tensile region only (30% of the total depth), the flexural strength of the layered beam attained 90.91% of that of the beam, with GO uniformly distributed throughout the sample. Based on the results of rapid chloride migration tests, when 12 mm GO-incorporated cement mortar layer was used, the chloride migration coefficient was reduced by 21.45%. It was also found that the measured chloride migration coefficient of layered cement mortar agreed with the series model. The present investigation provides an efficient approach to use GO in cement-based materials from the perspective of mechanical and durability properties. View Full-Text
Keywords: wet casting; graphene oxide; functionally graded materials; chloride ingress wet casting; graphene oxide; functionally graded materials; chloride ingress
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MDPI and ACS Style

Liu, S.; Lu, F.; Chen, Y.; Dong, B.; Du, H.; Li, X. Efficient Use of Graphene Oxide in Layered Cement Mortar. Materials 2022, 15, 2181. https://doi.org/10.3390/ma15062181

AMA Style

Liu S, Lu F, Chen Y, Dong B, Du H, Li X. Efficient Use of Graphene Oxide in Layered Cement Mortar. Materials. 2022; 15(6):2181. https://doi.org/10.3390/ma15062181

Chicago/Turabian Style

Liu, Shuangshuang, Fenglei Lu, Ya Chen, Biqin Dong, Hongxiu Du, and Xiangyu Li. 2022. "Efficient Use of Graphene Oxide in Layered Cement Mortar" Materials 15, no. 6: 2181. https://doi.org/10.3390/ma15062181

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