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Author:

Liu, Mengdi (Liu, Mengdi.) | Xia, Jun (Xia, Jun.) | Seong Chin, Chee (Seong Chin, Chee.) | Liu, Zuowei (Liu, Zuowei.)

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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

Keyword:

Aggregates Bacteria Calcium carbonate Cements Compressive strength Concrete aggregates Concrete blocks Mixing Organic pollutants Pavements Polychlorinated biphenyls Precipitation (chemical) Water absorption Water recycling

Author Community:

  • [ 1 ] [Liu, Mengdi]Civil Engineering Department, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China
  • [ 2 ] [Xia, Jun]Civil Engineering Department, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China
  • [ 3 ] [Xia, Jun]Institute for Sustainable Material and Environment, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China
  • [ 4 ] [Seong Chin, Chee]Civil Engineering Department, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China
  • [ 5 ] [Seong Chin, Chee]Institute for Sustainable Material and Environment, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China
  • [ 6 ] [Liu, Zuowei]Civil Engineering Department, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China

Reprint Author's Address:

  • [Xia, Jun]Civil Engineering Department, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China;;[Xia, Jun]Institute for Sustainable Material and Environment, Xi'an Jiaotong-Liverpool University, Suzhou; 215123, China;;

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Source :

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

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