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Combined effect of fly-ash and GGBS on performance of alkali activated concrete

Combined effect of fly-ash and GGBS on performance of alkali activated concrete Cement is the foremost constituent in concrete serves as a binder. The production of cement releases huge amount of green house emissions. In this regards alternative materials to cement are developed and effectively used in concrete. However, there are certain limitations are there to use these alternative materials in concrete. To overcome these problems and completely eliminate the usage of cement alkali activated concrete has been developed. In alkali activated concrete fly ash and alkaline activator has been utilized in place of cement. To enhance the performance of alkali activated concrete in this work an endeavor was undertaken by utilizing fly-ash and GGBS. The workability, strength, and durability of concrete have been studied with various combinations of fly-ash and GGBS. Results confirm that the workability of concrete decreases with increasing dosages of GGBS, while the strength enhances as the dosages of GGBS enhances. Acid attack test results also confirm that there is 0.56% weight loss and 0.75% strength loss has been noticed in the mix AAC10. The results confirm that the GGBS without fly-ash is better alternative for alkali activated concrete to the fly- ash based concrete activated with alkalis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Building Pathology and Rehabilitation Springer Journals

Combined effect of fly-ash and GGBS on performance of alkali activated concrete

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References (30)

Publisher
Springer Journals
Copyright
Copyright © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2022
ISSN
2365-3159
eISSN
2365-3167
DOI
10.1007/s41024-022-00170-5
Publisher site
See Article on Publisher Site

Abstract

Cement is the foremost constituent in concrete serves as a binder. The production of cement releases huge amount of green house emissions. In this regards alternative materials to cement are developed and effectively used in concrete. However, there are certain limitations are there to use these alternative materials in concrete. To overcome these problems and completely eliminate the usage of cement alkali activated concrete has been developed. In alkali activated concrete fly ash and alkaline activator has been utilized in place of cement. To enhance the performance of alkali activated concrete in this work an endeavor was undertaken by utilizing fly-ash and GGBS. The workability, strength, and durability of concrete have been studied with various combinations of fly-ash and GGBS. Results confirm that the workability of concrete decreases with increasing dosages of GGBS, while the strength enhances as the dosages of GGBS enhances. Acid attack test results also confirm that there is 0.56% weight loss and 0.75% strength loss has been noticed in the mix AAC10. The results confirm that the GGBS without fly-ash is better alternative for alkali activated concrete to the fly- ash based concrete activated with alkalis.

Journal

Journal of Building Pathology and RehabilitationSpringer Journals

Published: Dec 1, 2022

Keywords: GGBS; Fly-ash; NaOH; Na2SiO3; Compressive strength; Flexural strength; Acid attack

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