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Abstract:
Pervious concrete (PC) comprised of cement, water, coarse aggregates are widely used nowadays for sustainable and low impact pavement. The primary purpose of this study is to investigate the performance enhancement of pervious concrete blocks (PCB) containing recycled coarse aggregates (RCA) through microbially induced calcium carbonate precipitation (MICP). Two types of bacterial enhancement methods were adopted, which are PCB with pre-soaked RCA using bacteria solution and PCB with bacteria added mixing water. The properties of RCA, cement paste, and PCB were measured. The water absorption of RCA soaked in the bacteria and culture medium for 21 days was reduced by 10.41%. Meanwhile, the porosity of PCB decreased by 15.70%, and compressive strength increased up to 28.48% when incorporating pre-soaked RCA. There was an increase of 57.23% in compressive strength for hardened cement paste when bacteria were added in the mixing water. The compressive strength of PCB increased by 35.48% when compared with PCB with normal mixing water. Both enhancement methods show promising results and realize the purpose of enhancing the properties of PCB containing RCA. © 2020 Elsevier Ltd
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Construction and Building Materials
ISSN: 0950-0618
Year: 2020
Volume: 262
6 . 1 4 1
JCR@2020
6 . 1 4 1
JCR@2020
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:84
CAS Journal Grade:2
Cited Count:
WoS CC Cited Count: 0
SCOPUS Cited Count: 24
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 7