Effect of Gasification Char and Recycled Carbon Fibres on the Electrical Impedance of Concrete Exposed to Accelerated Degradation

Sustainability

Gian Marco Revel¹  Giuseppe Pandarese¹  Gloria Cosoli¹  Tiziano Bellezze²  Francesca Tittarelli²  Alessandra Mobili²  Nicola Giulietti³  Paolo Chiariotti³ 

[1] Department of Industrial Engineering and Mathematical Science (DIISM), Università Politecnica delle Marche, 60131 Ancona, Italy;Department of Materials, Environmental Sciences and Urban Planning (SIMAU), Università Politecnica delle Marche—INSTM Research Unit, 60131 Ancona, Italy;Department of Mechanical Engineering, Politecnico di Milano, 20156 Milano, Italy;

关键词: concrete;    durability;    carbon-based additions;    char;    carbon fibres;    capillary water absorption;   

DOI  :  10.3390/su14031775

来源: DOAJ

【 摘 要 】

This paper aims to evaluate the effect of carbon-based conductive recycled additions, i.e., recycled carbon fibres (RCF) and gasification char (GCH), on the mechanical, electrical, and durability properties of concretes. The obtained results show that the compressive strength of concrete is not affected by conductive additions, whereas electrical impedance, measured according to Wenner’s method, is significantly reduced (6%, 30% and 74% with RCF, GCH, and their combination, respectively) to the advantage of self-sensing properties. As durability is concerned, conductive additions slightly increase capillary water absorption, whereas they decrease chloride ingress through diffusion and do not significantly modify carbonation resistance.

【 授权许可】

Unknown