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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2021, Vol. 40 ›› Issue (10): 3316-3325.

• Cement and Concrete • Previous Articles     Next Articles

An Overview on Subsequent Hydration of Cement-Based Materials with Low Water-to-Binder Ratio

LI Ganglai, SHI Caijun, WU Zemei, LI Ning, LIU Yiwei   

  1. Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province,College of Civil Engineering, Hunan University, Changsha 410082, China
  • Received:2021-04-27 Revised:2021-05-14 Online:2021-10-15 Published:2021-11-11

Abstract: Cement-based materials with low water-to-binder (W/B) ratio have low porosity, excellent mechanical properties, durability, and impact resistance. The hydration of cement particles are restrained by the limited free water and the confined space for the precipitation of hydration products, leading to a high amount of unhydrated cementitious materials. This paper illustrated the process and mechanism of subsequent hydration of cement, reviewed the effects of subsequent hydration on microstructure, volume stability and strength of cement-based materials with low W/B ratio. Finally, some issues associated with subsequent hydration were addressed and the prospects for future researches were put forward. It aims to lay a theoretical information for the study and application of long-term stability of cement-based materials with low W/B ratio.

Key words: low W/B ratio, subsequent hydration, hydration mechanism, microstructure, volume stability, strength

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