Author : Mohd Nasim 1
Date of Publication :24th January 2018
Abstract: Autogenous healing in concrete occurs when hairline cracks in concrete repairs themselves through reactions in presence of water. This paper presents a review on an enhancement of autogenous healing of concrete using different supplementary cementitious materials (SCMs). The supplementary cementitious materials such as fly ash and ground-granulated blast-furnace slag (GGBS) reacts with calcium hydroxide. These materials in terms which delayed reactions, thus being more probable that it remains a reaction capability when a crack appears. In this paper, a review has been carried out on the properties of concrete such as mechanical properties, durability properties and crack closure. From the study, it is concluded that introducing supplementary cementitious materials improves autogenous healing of concrete
Reference :
-
- E. Schlangen, N. ter Heide, and K. van Breugel, “Crack Healing of Early Age Cracks in Concrete,” Meas. Monit. Model. Concr. Prop., pp. 273–284, 2006.
- D. Palin, V. Wiktor, and H. M. Jonkers, “Autogenous healing of marine exposed concrete: Characterization and quantification through visual crack closure,” Cem. Concr. Res., vol. 73, no. July 2016, pp. 17– 24, 2015
- K. Van Tittelboom, E. Gruyaert, H. Rahier, and N. De Belie, “Influence of mix composition on the extent of autogenous crack healing by continued hydration or calcium carbonate formation,” Constr. Build. Mater., vol. 37, pp. 349–359, 2012.
- H. M. Jonkers and E. Schlangen, “CRACK REPAIR BY CONCRETE-IMMOBILIZED BACTERIA,” no. April, pp. 1–7, 2007.
- P. Termkhajornkit, T. Nawa, Y. Yamashiro, and T. Saito, “Self-healing ability of fly ash-cement systems,” Cem. Concr. Compos., vol. 31, no. 3, pp. 195–203, 2009.
- Z. H. Zhou, Z. Q. Li, D. Y. Xu, and J. H. Yu, “Influence of Slag and Fly Ash on the Self-Healing Ability of Concrete,” Adv. Mater. Res., vol. 306–307, pp. 1020– 1023, 2011.
- S.-H. Na, “Experimental Investigation on SelfHealing Performance of Cementitious Composite Incorporating Fly Ash and Ground GRANULATED BLAST FURNACE SLAG,” 2013.