A Review on the Use of Self-Curing Agents and Its Mechanism in High-Performance Cementitious Materials

Buildings

Omrane Benjeddou¹  Mohammad Hajmohammadian Baghban²  Ghasan Fahim Huseien³  Iman Faridmehr⁴  Muhd Norhasri Muhd Sidek⁵  Norhaliza Hamzah⁵  Hamidah Mohd Saman⁵  Abdul Rahman Mohd Sam⁶ 

[1] Department of Civil Engineering, College of Engineering, Prince Sattam Bin Abdulaziz University, Alkharj 16273, Saudi Arabia;Department of Manufacturing and Civil Engineering, Norwegian University of Science and Technology (NTNU), 2815 Gjøvik, Norway;Department of the Built Environment, School of Design and Environment, National University of Singapore, Singapore 117566, Singapore;Institute of Architecture and Construction, South Ural State University, Lenin Prospect 76, 454080 Chelyabinsk, Russia;School of Civil Engineering, College of Engineering, Universiti Teknologi MARA, Shah Alam 40450, Malaysia;UTM Construction Research Center, Universiti Teknologi Malaysia, Skudai 81310, Malaysia;

关键词: high-performance concrete;    self-curing;    curing agents;    mechanism;    interfacial transition zone;   

DOI  :  10.3390/buildings12020152

来源: DOAJ

【 摘 要 】

Self-cured concrete is a type of cement-based material that has the unique ability to mitigate the loss rate of water and increase the capacity of concrete to retain water compared to conventional concrete. The technique allows a water-filled internal curing agent to be added to the concrete mixture and then slowly releases water during the hydration process. Many researchers have studied the composition of self-curing concrete using different materials such as artificial lightweight aggregate (LWA), porous superfine powders, superabsorbent polymers (SAP), polyethylene glycol (PEG), natural fibers, and artificial normal-weight aggregate (ANWA) as curing agents. Likewise, physical, mechanical, and microstructure properties, including the mechanisms of curing agents toward self-curing cement-based, were discussed. It was suggested that adopting self-curing agents in concrete has a beneficial effect on hydration, improving the mechanical properties, durability, cracking susceptibility behavior, and mitigating autogenous and drying shrinkage. The interfacial transition zone (ITZ) between the curing agent and the cement paste matrix also improved, and the permeability is reduced.

【 授权许可】

Unknown