利用补充材料和碳化固化提高水泥传感器的压阻系数

IF 1.4 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

Advances in Cement Research Pub Date : 2024-02-08 DOI:10.1680/jadcr.23.00202

Daeik Jang, Jinho Bang, Haemin Jeon

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引用次数: 0

摘要

本研究探讨了利用碳化固化法制造掺有辅助胶凝材料（SCM）的水泥基传感器。系统研究了 SCM 类型（即粉煤灰或矿渣）和固化条件对二氧化碳吸收率、抗压强度、电导率和压阻传感能力的影响。结果表明，加入粉煤灰或矿渣可提高二氧化碳吸收率。但同时也发现，过度碳化固化会对抗压强度产生负面影响。碳化固化后电阻率增加，这是由于碳化引起的水合物形成破坏了基于 CNT 的导电网络。压阻传感能力受粘合剂类型和固化条件的影响，与粉煤灰混合的样品灵敏度更高。

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Enhancing piezoresistivity of cement sensor with supplementary materials and carbonation curing

This study explores the fabrication of cement-based sensors blended with supplementary cementitious materials (SCM) using carbonation curing. The effects of SCM types (i.e. fly ash or slag) and curing conditions on CO2 uptake degree, compressive strength, electrical conductivity, and piezoresistive sensing capability were systematically examined. The results indicate that the inclusion of fly ash or slag enhances CO2 uptake degree. However, it is also found that the excessive carbonation curing negatively affects compressive strength. Electrical resistivity is increased after carbonation curing due to carbonation-induced hydrate formation disrupting CNT-based conductive networks. The piezoresistive sensing capability is influenced by binder types and curing conditions, with higher sensitivity observed in samples blended with fly ash.

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来源期刊

Advances in Cement Research 工程技术-材料科学：综合

CiteScore

3.70

自引率

5.00%

发文量

审稿时长

3.2 months

期刊介绍： Advances in Cement Research highlights the scientific ideas and innovations within the cutting-edge cement manufacture industry. It is a global journal with a scope encompassing cement manufacture and materials, properties and durability of cementitious materials and systems, hydration, interaction of cement with other materials, analysis and testing, special cements and applications.