Singh, Navdeep
Natural carbonation resistance of RCA-SCC blended with mineral admixtures - Vol.103(2), June - New York Springer 2022 - 531-542p.
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.
Humanities and Applied Sciences
Natural carbonation resistance of RCA-SCC blended with mineral admixtures - Vol.103(2), June - New York Springer 2022 - 531-542p.
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.
Humanities and Applied Sciences