Surface Modification of Fly Ash Concrete Through Nanophase Incorporation for Enhanced Chemical Deterioration Resistance

Uthaman, Sudha; George, R.P.; Vishwakarma, Vinita; Ramachandran, D.; Thinaharan, C.; Viswanathan, K.; Mudali, U. Kamachi

doi:10.1007/s40735-018-0129-0

Cited by 5 publications

(6 citation statements)

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“…Sudha et al . has shown a one order decrease in the viable bacterial count on incorporation of TiO 2 nanoparticles. In the present study, a four order decrease in aerobic bacterial density and five order decrease in the SRB density were shown by the CFNI mix.…”

Section: Discussionmentioning

confidence: 99%

“…Sudha et al . has carried out studies on nanophase modified fly ash concrete and reported that pH was higher for concrete integrated with nanoparticles than for fly ash concrete after exposure in seawater. Many investigators have shown that addition of TiO 2 nanoparticles can retard pH degradation .…”

Section: Discussionmentioning

confidence: 99%

“…Studies conducted by Vinita et al [4] has shown that the pH of concrete specimens incorporated with fly ash was high even after exposure to microbial cultures in comparison to control concrete. Sudha et al [15] has carried out studies on nanophase modified fly ash concrete and reported that pH was higher for concrete integrated with nanoparticles than for fly ash concrete after exposure in seawater. Many investigators have shown that addition of TiO 2 nanoparticles can retard pH degradation [13,14].…”

Section: Discussionmentioning

confidence: 99%

“…A comprehensive study by Sudha et al . has shown that incorporation of nanoparticles of CaCO 3 and TiO 2 in 1:1 proportion can greatly enhance the properties of fly ash concrete.…”

Section: Introductionmentioning

confidence: 99%

“…It has also been found that the reduction in pH on the surface of concrete specimens incorporated with nano-TiO 2 is minimal and, therefore, increases the anti-bacterial resistance of the concrete [13,14]. A comprehensive study by Sudha et al [15] has shown that incorporation of nanoparticles of CaCO 3 and TiO 2 in 1:1 proportion can greatly enhance the properties of fly ash concrete.…”

Section: Introductionmentioning

confidence: 99%

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Enhanced anti‐microbial activity in green concrete specimens containing fly ash, nanophase modifiers, and corrosion inhibitor

Harilal

Uthaman

George

et al. 2018

Env Prog and Sustain Energy

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This study reports the anti‐bacterial properties of green concrete containing fly ash, nanoparticle modifiers, and a corrosion inhibitor. Four different concrete specimens, namely control concrete containing ordinary portland cement (CC), fly ash concrete containing 40 wt % fly ash (CF), modified fly ash concrete containing nano‐TiO2 and nano‐CaCO3 (1 wt % each) called CFN, and CFN with 2 wt % corrosion inhibitor (CFNI) are used in the present study. Among the four specimens exposed to microbial culture, CFNI showed minimal bacterial attachment and biofilm density, which is further corroborated from Epifluorescence microscopy and 3D confocal laser scanning microscopy. The CFNI specimens showed the least pH reduction among the four, which resulted in the enhanced microbial resistance. The results unambiguously confirm the synergetic effects of nanophase modifiers and NaNO2 based inhibitor in controlling microbial activity in concrete specimens. The results have promising applications in formulating concrete structures that are exposed to harsh environmental conditions. © 2018 American Institute of Chemical Engineers Environ Prog, 38:e13102, 2019

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…A comprehensive study by Sudha et al . has shown that incorporation of nanoparticles of CaCO 3 and TiO 2 in 1:1 proportion can greatly enhance the properties of fly ash concrete.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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