Contribution of fly ash to the strength development of mortars cured at different temperatures. (22nd March 2021)

• Record Type: Journal Article
• Authors: Ogawa, Yuko; Uji, Kimitaka; Ueno, Atsushi; Kawai, Kenji
• Is Part Of: Construction & building materials. Volume 276(2021)
• Publication Date: 2021-03-22
• Subjects: Fly ash -- Cementing efficiency factor -- Curing temperature -- Mortar strength development; Building materials -- Periodicals; 624.18
• DOI: 10.1016/j.conbuildmat.2020.122191
• Languages: English
• ISSNs: 0950-0618

Abstract

Highlights: Contribution of fly ash to strength development of mortar was investigated. Contribution of fly ash varied with the replacement ratio and curing temperature. Expressed cementing efficiency factor as log function of cumulative temperature. Cementing efficiency can be expressed using an appropriate datum temperature. Abstract: This study aims to determine the contribution of fly ash to the compressive strength development of mortars cured at different temperatures based on the cementing efficiency factor. The strength development of mortar specimens with different fly ash replacement ratios cured at 10 °C, 20 °C, and 30 °C was analyzed considering the apparent activation energy. Subsequently, the contribution of fly ash was assessed using the cementing efficiency factor. The results indicate that the cementing efficiency factor is significantly affected by the curing temperature and can be estimated using the cumulative temperature and the appropriate datum temperature for fly ash cement.