The Optimum Interval Time of Layered Cement Composites with the Incorporation of Edge-Oxidized Graphene Oxide

IF 3.1 3区工程技术 Q2 CONSTRUCTION & BUILDING TECHNOLOGY

Buildings Pub Date : 2024-07-25 DOI:10.3390/buildings14082307

M. Khawaji, Mohammed Alamri

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Abstract

The current research focuses on the effect of incorporating edge-oxidized graphene oxide (EOGO) on the performance of layered cement composites cast at different times. The feature of producing flower-shaped hydrated cement products is exploited to enhance the contact surface of two different cement composites. In the current study, the interval time of casting cement composites is the crucial parameter investigated. Consequently, a layer of cement paste with EOGO is cast above a layer of cement mortar where the amount of EOGO of 0.10% by the cement weight is fixed for all mixtures. Also, four different interval times based on cement setting time are considered, namely immediately, 6 h, 12 h, and 1 day. Similar mixtures are prepared but without adding EOGO for comparison purposes. The results show that EOGO is capable of enhancing the contact surface of layered cement composites by strengthening the split strength of two different layers (between 12 and 29%). Moreover, casting the paste layer containing EOGO after 6 h of mortar layer seems to be the optimum interval time among others by improving compressive strength (by 29%) and residual strength (by 34%) and not affecting flexural strength and porosity percentage.

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掺入边缘氧化石墨烯的层状水泥复合材料的最佳间隔时间

目前的研究重点是掺入边缘氧化石墨烯（EOGO）对不同时间浇注的层状水泥复合材料性能的影响。利用生产花形水化水泥产品的特点来增强两种不同水泥复合材料的接触面。在当前的研究中，浇注水泥复合材料的间隔时间是研究的关键参数。因此，在一层水泥砂浆上浇注一层含有 EOGO 的水泥浆，所有混合物中 EOGO 的用量固定为水泥重量的 0.10%。此外，还根据水泥凝结时间考虑了四种不同的间隔时间，即立即、6 小时、12 小时和 1 天。为便于比较，还配制了不添加 EOGO 的类似混合物。结果表明，EOGO 能够通过增强两个不同层的劈裂强度（12% 到 29%）来提高分层水泥复合材料的接触面。此外，在砂浆层浇注 6 小时后浇注含有 EOGO 的浆料层似乎是最佳间隔时间，可提高抗压强度（29%）和残余强度（34%），且不影响抗折强度和孔隙率。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Buildings Multiple-

CiteScore

3.40

自引率

26.30%

发文量

1883

审稿时长

11 weeks

期刊介绍： BUILDINGS content is primarily staff-written and submitted information is evaluated by the editors for its value to the audience. Such information may be used in articles with appropriate attribution to the source. The editorial staff considers information on the following topics: -Issues directed at building owners and facility managers in North America -Issues relevant to existing buildings, including retrofits, maintenance and modernization -Solution-based content, such as tips and tricks -New construction but only with an eye to issues involving maintenance and operation We generally do not review the following topics because these are not relevant to our readers: -Information on the residential market with the exception of multifamily buildings -International news unrelated to the North American market -Real estate market updates or construction updates