含有碳纤维的自感知可持续胶凝混合物

Thamer Almotlaq, M. Saafi
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引用次数: 0

摘要

本文重点研究了可持续胶凝复合材料的导电性、水化性能和自传感性能,这些都是智慧城市基础设施的关键特征。智慧城市拥有庞大的基础设施,这些基础设施相互连接,传输数据和信息,用于健康监测和性能优化。在这方面,让它们由可持续建筑材料(混凝土)制成,并且具有足够的导电性,将是结构性能的合适解决方案。所研究的可持续胶凝混合物是由海洋成分(海水和海砂)制成的,这是一种丰富的资源。本研究的主要目的是提高混合物的导电性和灵敏度。为了实现这一目标,将6种不同比例的研磨碳纤维(mcf)和切碎碳纤维(ccf)添加到胶凝混合物中。实验研究分为阻抗谱研究电导率和水化发展,以及自传感性能,在各种混合设计中进行。结果表明,加入海洋组分可使混合料的导电性提高40-50%。添加MCF后,性能得到了进一步改善,因为与普通的ss-sw(海砂和海水)样品相比,MCF显著降低了60%。添加CCF进一步提高了电导率,在固化1年后,样品的电阻率低至53 Ωcm。
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Self-sensing Sustainable Cementitious Mixtures Incorporating Carbon Fibres
This paper focuses on sustainable cementitious composites in terms of their conductivity, hydration and self-sensing properties, which are key features for smart city infrastructures. Smart cities have massive infrastructures that are interconnected, transmitting data and information for health-monitoring and performance optimization. In this regard, having them made of sustainable building materials (concrete) that are also sufficiently conductive, will be a suitable solution for structures’ performance. The studied sustainable cementitious mixtures are made by sea components (sea water and sea sand), which are abundant resources. The primary goal of this study is to improve the mixes’ electrical conductivity and sensitivity. To achieve this goal, milled carbon fibres (MCFs) and chopped carbon fibres (CCFs) in 6 different proportions were added to the cementitious mixes. The experimental study is divided into impedance spectroscopy to study the conductivity and hydration development, and self-sensing properties, conducted on various mix designs. The results show that incorporating sea components improve the electrical conductivity of the mixes by 40-50%. Further improvements were achieved by adding MCF as it shows a remarkable reduction by 60% compared to the plain ss-sw (sea sand and sea water) samples. Adding CCF improved the conductivity even further and resulted in sample’s resistivity as low as 53 Ωcm after 1 year of curing time.
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来源期刊
自引率
0.00%
发文量
342
审稿时长
6 weeks
期刊介绍: MATEC Web of Conferences is an Open Access publication series dedicated to archiving conference proceedings dealing with all fundamental and applied research aspects related to Materials science, Engineering and Chemistry. All engineering disciplines are covered by the aims and scope of the journal: civil, naval, mechanical, chemical, and electrical engineering as well as nanotechnology and metrology. The journal concerns also all materials in regard to their physical-chemical characterization, implementation, resistance in their environment… Other subdisciples of chemistry, such as analytical chemistry, petrochemistry, organic chemistry…, and even pharmacology, are also welcome. MATEC Web of Conferences offers a wide range of services from the organization of the submission of conference proceedings to the worldwide dissemination of the conference papers. It provides an efficient archiving solution, ensuring maximum exposure and wide indexing of scientific conference proceedings. Proceedings are published under the scientific responsibility of the conference editors.
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