Abstract

Crack formation is an inherent property of concrete structures; however, these materials also have the ability to heal cracks autogenously. External water penetrates the inside of concrete through the cracks, and unreacted cement particles present on the crack surface are rehydrated. Cracks are healed by hydration products owing to further hydration. Ground-granulated blast-furnace slag (GGBFS) and fly ash (FA) have slower reactions with water than cement. Because of this late reactivity, there is a high possibility of being present in an unreacted state inside the matrix. This study investigated the self-healing potential of supplementary cementitious materials (SCMs) such as GGBFS, FA, and calcium sulfur aluminate (CSA) expansion agents. For this purpose, isothermal calorimetry and water flow tests were performed. Experimental results showed that the self-healing potential of GGBFS and CSA expansion agent was higher than that of OPC and FA is decreased.

Details

Title
Prediction of Self-Healing Potential of Cementitious Materials Incorporating Crystalline Admixture by Isothermal Calorimetry
Author
Park, Byoungsun 1 ; Choi, Young Cheol 2   VIAFID ORCID Logo 

1  Construction Technology Research Center, Korea Conformity Laboratories, Seoul, South Korea 
2  Department of Civil and Environmental Engineering, Gachon University, Seongnam-si, Gyeonggi-do, Republic of Korea 
Pages
1-14
Publication year
2019
Publication date
Dec 2019
Publisher
Springer Nature B.V.
ISSN
19760485
e-ISSN
22341315
Source type
Scholarly Journal
Language of publication
English
DOI
https://doi.org/10.1186/s40069-019-0349-9
ProQuest document ID
2249648416
Copyright
International Journal of Concrete Structures and Materials is a copyright of Springer, (2019). All Rights Reserved., © 2019. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.