TY - JOUR
T1 - The surface coating mechanism of polluted concrete by Candida ethanolica induced calcium carbonate mineralization
AU - Wong, Leong Sing
AU - Oweida, Ahmed Farid Mahmoud
AU - Kong, Sih Ying
AU - Iqbal, Dawood Muhammad
AU - Regunathan, Praveen
N1 - Funding Information:
The authors would like to express their gratitude to the Ministry of Higher Education (MOHE) of Malaysia for providing financial support for the research work through Fundamental Research Grant Scheme (FRGS) (Project reference code: FRGS/1/2018/TK10/UNITEN/02/3).
Publisher Copyright:
© 2020
PY - 2020/10/10
Y1 - 2020/10/10
N2 - This paper documents the laboratory evidence on the mineralization mechanism of Candida ethanolica for surface coating of concrete with polluted sand as fine aggregate. C. ethanolica is largely discovered as a waste microbe in the beer industry. The tendency of the microbe to cultivate easily and induce bio-crystals with the capability to encapsulate heavy metals; has made it mesmerizing to be explored in a sustainable manner for concrete surface coating technology. Under the influence of the optimal initial pH, calcium oxide concentration, and fungal cell concentration in the liquid growth media; the treated concrete cubes were experimented to have an average 28-day compressive strength of 32.20 MPa. Such strength value is 6.27% higher when compared to that of the untreated concrete cubes at the same curing time. Overall, the findings revealed that the fungal bio-crystals have a promising prospect to be applied as a concrete surface coating.
AB - This paper documents the laboratory evidence on the mineralization mechanism of Candida ethanolica for surface coating of concrete with polluted sand as fine aggregate. C. ethanolica is largely discovered as a waste microbe in the beer industry. The tendency of the microbe to cultivate easily and induce bio-crystals with the capability to encapsulate heavy metals; has made it mesmerizing to be explored in a sustainable manner for concrete surface coating technology. Under the influence of the optimal initial pH, calcium oxide concentration, and fungal cell concentration in the liquid growth media; the treated concrete cubes were experimented to have an average 28-day compressive strength of 32.20 MPa. Such strength value is 6.27% higher when compared to that of the untreated concrete cubes at the same curing time. Overall, the findings revealed that the fungal bio-crystals have a promising prospect to be applied as a concrete surface coating.
KW - Bio-crystals
KW - Candida ethanolica
KW - Compressive strength
KW - Heavy metals
KW - Mineralization mechanism
UR - http://www.scopus.com/inward/record.url?scp=85123626459&partnerID=8YFLogxK
U2 - 10.1016/j.conbuildmat.2020.119482
DO - 10.1016/j.conbuildmat.2020.119482
M3 - Article
AN - SCOPUS:85123626459
VL - 257
JO - Construction and Building Materials
JF - Construction and Building Materials
SN - 0950-0618
M1 - 119482
ER -