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http://hdl.handle.net/10397/109130
Title: | Co-effects of graphene oxide and silica fume on the rheological properties of cement paste | Authors: | Lu, D Sheng, Z Yan, B Jiang, Z |
Issue Date: | 2023 | Source: | Lecture notes in civil engineering, 2023, v. 356, p. 251-258 | Abstract: | Polycarboxylate superplasticizer is typically used to prepare a high-quality graphene oxide (GO) solution before mixing with cement grains. However, even if GO is well dispersed in water, they tend to re-agglomerate in the alkaline cement hydration environment, thus seriously decreasing the workability of the fresh mixture. In this study, we propose a more targeted method by synthesizing GO-coated silica fume (SF) to promote the utilization of GO in cement-based materials. Specifically, the surface of pristine SF was modified to convert their zeta potential (modified SF: MSF), then GO-coated SF (i.e., MSF@GO) was prepared via electrostatic adsorption of GO onto the MSF surface. The experimental results revealed that adding 5MSF@GO hybrid (0.04% GO and 5% MSF, by weight of binder) significantly reduced yield stress and plastic viscosity by 51.5% and 26.2%, respectively, relative to the 0.04% GO-modified sample. These findings indicated that application of GO-coated SF is an effective and environmentally friendly way to develop sustainable cementitious composites. | Keywords: | Cement composites Graphene oxide Rheological property Silica fume Surface modification |
Publisher: | Springer Singapore | Journal: | Lecture notes in civil engineering | ISBN: | 978-981-99-3329-7 (Hardcover ISBN) 978-981-99-3332-7 (Softcover ISBN) 978-981-99-3330-3 (eBook ISBN) |
ISSN: | 2366-2557 | EISSN: | 2366-2565 | DOI: | 10.1007/978-981-99-3330-3_26 | Description: | Seventh International Symposium on Nanotechnology in Construction (NICOM7), 31 October - 02 November, 2022, Melbourne, Australia | Rights: | © The Author(s) 2023 This chapter is licensed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made. The images or other third party material in this chapter are included in the chapter's Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the chapter's Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. The following publication Lu, D., Sheng, Z., Yan, B., Jiang, Z. (2023). Co-effects of Graphene Oxide and Silica Fume on the Rheological Properties of Cement Paste. In: Duan, W., Zhang, L., Shah, S.P. (eds) Nanotechnology in Construction for Circular Economy. NICOM 2022. Lecture Notes in Civil Engineering, vol 356. Springer, Singapore is available at https://doi.org/10.1007/978-981-99-3330-3_26. |
Appears in Collections: | Conference Paper |
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