Materiales de Construcción, Vol 54, No 276 (2004)

Performance of alkaline activated slag at high temperatures


https://doi.org/10.3989/mc.2004.v54.i276.257

R. Mejía de Gutiérrez
Grupo de Materiales Compuestos, Escuela de Ingeniería de Materiales, Universidad del Valle, Cali, Spain

J. Maldonado
Grupo de Materiales Compuestos, Escuela de Ingeniería de Materiales, Universidad del Valle, Cali

C. Gutiérrez
Grupo de Materiales Compuestos, Escuela de Ingeniería de Materiales, Universidad del Valle, Cali, Spain

Abstract


This paper presents an investigation into the performance of alkali-activated slag (AAS) mortar exposed to elevated temperatures. Sodium silicate, sodium hydroxide and a mix (waterglass) with a modulus (SiO2/Na20) of 1.5 were used as activators. The specimens were heated in an electric furnace up to 1000 ºC in steps of 200 ºC for a constant period of 2 hours. The weight loss, residual compressive strength, resistance to chloride ion penetration, porosity and capillary sorption were evaluated and the results were compared with those of ordinary and blended Portland cement mortar

Keywords


alkaline activated slag; refractory materials; fire resistance; alternative cements

Full Text:


PDF


Copyright (c) 2004 Consejo Superior de Investigaciones Científicas (CSIC)

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.


Contact us materconstrucc@ietcc.csic.es

Technical support soporte.tecnico.revistas@csic.es