Mechanical and microstructural properties of alkali-activated slag and slag + fly ash mortars exposed to high temperature

By S. Çelikten, Mustafa Sarıdemir, I. Deneme. Construction and Building Materials, 2019

188 citations recorded by the source corpus.

Abstract In this study, changes in the mechanical and microstructural properties of alkali-activated blast furnace slag (BFS) and BFS + fly ash (FA) blended mortars exposed to 25, 400, 600 and 800 °C temperatures are investigated. The alkali-activated mortars using the replacement ratios of 0, 25 and 50% FA by weight of BFS together with the activators are produced in addition to the control mortars produced by only cement. Three different optimum Ms (SiO2/Na2O ratio of activators) values of 0.50, 0.75 and 1.00 are determined for the alkali-activated mortars. The FA substitution by BFS increases the high temperature resistance of alkali-activated BFS mortars.

Subfields: Civil and Structural Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/e1d20a819498e595ef6fca6a546894bd6d90d78e