Prediction of strength and shrinkage of ternary blended concrete with fly ash, slag and silica fume
Abstract: In the recent years, there has been increased in concern on shrinkage response of concrete systems as abundant cases of premature deterioration were reported. The major factors affecting the deterioration of a concrete system are quality, composition and the surrounding environment. In connection with this, the work concentrates on the study of long-term effects on materials used in the concrete (supplementary cementitious materials SCMs) such as fly ash, slag and silica fume as a blended concrete system. To carry out the experimental work, nine concrete mixes were designed for varying proportions of SCMs and w/b. Evolution of compressive strength, elastic modulus, shrinkage and selected durability parameters were tested under a controlled laboratory condition. Based on the work, it was found that the inclusion of fly ash, slag and silica fume on the concrete systems enhance the compressive strength in long-term, also the shrinkage response of the ternary systems shows a substantial reduction in the measured strain. Durability performance like chloride penetration and sorptivity had a better performance in comparison with the conventional concrete systems.
| Main Authors: | , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Escuela de Construcción Civil, Pontificia Universidad Católica de Chile
2022
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| Online Access: | http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-915X2022000300670 |
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