Review on self-heating electrically conductive cementitious composites: Focus on deicing and electrical curing.

Self-heating electrically conductive cementitious composites (ECCCs) represent an innovative advancement in civil engineering materials, offering a variety of functionalities including deicing, electrical curing, and facilitating concrete casting in cold weather. This paper presents a comprehensive review of self-heating ECCCs, focusing on electrical/ohmic curing and deicing. After an in-depth review of previous research, effective dispersion techniques, such as combinations of surfactants and admixtures, were found to be critical for establishing robust electrical conductivity and self-heating performance in ECCCs. The study also shows that the self-heating performance of ECCCs is influenced by several factors, such as filler properties, mixture design, moisture content, temperature, and curing conditions. The effects of moisture are controversial; while some studies suggest it improves self-heating, others indicate that it may disrupt conductive pathways through unwanted hydration. Generally, this paper presents an overall review of self-heating ECCCs research ranging from the raw materials, fabrications, mechanisms, and test methods to case studies on their performances. Finally, remaining issues and future directions for the advancements of ECCCs to extend their applicability are discussed. • The use of self-heating ECCCs for deicing and electrical curing was discussed. • Effective filler dispersion is crucial for electrical and self-heating performance. • Percolation thresholds, contact resistance, and tunneling enable resistive heating. • Optimizing combinations of surfactants and admixtures is essential for effective dispersion. • Various factors influencing self-heating performance were examined. [ABSTRACT FROM AUTHOR]