Natural carbonation resistance of RCA-SCC blended with mineral admixtures
By: Singh, Navdeep
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Contributor(s): Singh, Surinder Pal.
Publisher: New York Springer 2022Edition: Vol.103(2), June.Description: 531-542p.Subject(s): Humanities and Applied SciencesOnline resources: Click here
In:
Journal of the institution of engineers (India): Series ASummary: The work reported in this paper comprises of estimation of natural carbonation resistance of recycled concrete aggregates-based self-compacting concrete (RCA-SCC) tested for natural outdoor exposure until 6 years. Thirteen RCA-SCC mixes were made in total, covering control SCC, four RCA-SCC mixes, and eight RCA-SCC mixes blended with mineral admixtures. Natural carbonation tests were performed after specified exposure using the conventional phenolphthalein method. The findings indicate reduction of natural carbonation resistance with increase in RCA as replacement of coarse natural aggregates (CNA) along with prolonging time due to their distinct physio-structural compositions. The maleficence due to the presence of RCA in SCC has been recompensed up to a certain extent with the addition of silica fume (SF) or metakaolin (MK). The results also show a steady decrease in resistance towards natural carbonation when the alteration level increases resulting in higher values of carbonation coefficients obtained for non-blended and blended RCA-SCC mixes.
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Articles Abstract Database
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School of Engineering & Technology Archieval Section | Not for loan | 2022-1752 |
The work reported in this paper comprises of estimation of natural carbonation resistance of recycled concrete aggregates-based self-compacting concrete (RCA-SCC) tested for natural outdoor exposure until 6 years. Thirteen RCA-SCC mixes were made in total, covering control SCC, four RCA-SCC mixes, and eight RCA-SCC mixes blended with mineral admixtures. Natural carbonation tests were performed after specified exposure using the conventional phenolphthalein method. The findings indicate reduction of natural carbonation resistance with increase in RCA as replacement of coarse natural aggregates (CNA) along with prolonging time due to their distinct physio-structural compositions. The maleficence due to the presence of RCA in SCC has been recompensed up to a certain extent with the addition of silica fume (SF) or metakaolin (MK). The results also show a steady decrease in resistance towards natural carbonation when the alteration level increases resulting in higher values of carbonation coefficients obtained for non-blended and blended RCA-SCC mixes.
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