Abrasion and Strength of high percentage Graphene Oxide (GO) Incorporated Concrete

IF 0.7 Q4 ENGINEERING, CIVIL
D. Mohotti, P. Mendis, K. Wijesooriya, I. Fonseka, D. Weerasinghe, C-K. Lee
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引用次数: 2

Abstract

Incorporating Graphene Oxide (GO) in concrete composite has been a good alternative to Pristine Graphene due to its hydrophilic nature and its ability to readily disperse in water the consequent cementitious mix. The addition of GO to the cementitious mix has been found to enhance mechanical properties. This paper aims to assess the abrasion resistance of GO incorporated concrete for its application in road pavement design. Experiments for strength in terms of compression, workability in terms of slump and abrasion resistance in accordance with ASTM-C418-20 using a sand-blasting rig are presented in the paper. It is shown that the addition of GO at percentages between 0% to 0.08% (to cement weight ratio), the compressive strength improves by 39% and 26% at 7 days and 28 days, respectively. The addition of GO consequently affected the workability where it was found that the addition of polycarboxylate ether (PCE) (superplasticisers) can drastically improve the workability, which is essential in practical applications. The abrasion was measured for specimens prepared with a high GO percentage between 0.1% to 0.3% and measured at 7 days and displayed a reduction of 70% of abraded volume at 0.3% GO.  Finally, the study presents the benefits of using GO where the reduced amount of cement usage will consequently lead to sustainable concrete construction.
高比例氧化石墨烯混凝土的耐磨性和强度
在混凝土复合材料中加入氧化石墨烯(GO)是原始石墨烯的一个很好的替代品,因为它的亲水性和在水中容易分散的能力,从而形成胶凝混合物。在胶凝料中加入氧化石墨烯可以增强其力学性能。本文旨在评估氧化石墨烯掺入混凝土的耐磨性,以便将其应用于道路路面设计。根据ASTM-C418-20的要求,在喷砂机上进行了抗压强度、坍落度和易操作性和耐磨性的试验。结果表明,当氧化石墨烯的掺量在0 ~ 0.08%(水泥重量比)之间时,第7天和第28天的抗压强度分别提高39%和26%。氧化石墨烯的加入影响了可加工性,其中发现聚羧酸醚(PCE)(超塑剂)的加入可以大大改善可加工性,这在实际应用中是必不可少的。对氧化石墨烯含量介于0.1%至0.3%之间的试样进行磨损测量,并在7天内进行测量,结果显示,氧化石墨烯含量为0.3%时,磨损体积减少了70%。最后,该研究提出了使用GO的好处,减少水泥使用量将导致可持续的混凝土施工。
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来源期刊
Electronic Journal of Structural Engineering
Electronic Journal of Structural Engineering Engineering-Civil and Structural Engineering
CiteScore
1.10
自引率
16.70%
发文量
0
期刊介绍: The Electronic Journal of Structural Engineering (EJSE) is an international forum for the dissemination and discussion of leading edge research and practical applications in Structural Engineering. It comprises peer-reviewed technical papers, discussions and comments, and also news about conferences, workshops etc. in Structural Engineering. Original papers are invited from individuals involved in the field of structural engineering and construction. The areas of special interests include the following, but are not limited to: Analytical and design methods Bridges and High-rise Buildings Case studies and failure investigation Innovations in design and new technology New Construction Materials Performance of Structures Prefabrication Technology Repairs, Strengthening, and Maintenance Stability and Scaffolding Engineering Soil-structure interaction Standards and Codes of Practice Structural and solid mechanics Structural Safety and Reliability Testing Technologies Vibration, impact and structural dynamics Wind and earthquake engineering. EJSE is seeking original papers (research or state-of the art reviews) of the highest quality for consideration for publication. The papers will be published within 3 to 6 months. The papers are expected to make a significant contribution to the research and development activities of the academic and professional engineering community.
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