The Effect of Recycled Sand on the Tensile Properties of Engineered Cementitious Composites

Zhifu Dong, Yan Tan, Xiangru Jian, Jiangtao Yu () and Kequan Yu
Additional contact information
Zhifu Dong: School of Civil Engineering, Architecture, and Environment, Hubei University of Technology, Wuhan 430068, China
Yan Tan: School of Civil Engineering, Architecture, and Environment, Hubei University of Technology, Wuhan 430068, China
Xiangru Jian: College of Civil Engineering, Tongji University, Shanghai 200092, China
Jiangtao Yu: School of Civil Engineering, Architecture, and Environment, Hubei University of Technology, Wuhan 430068, China
Kequan Yu: College of Civil Engineering, Tongji University, Shanghai 200092, China

Sustainability, 2022, vol. 14, issue 20, 1-17

Abstract: This research aims to investigate the feasibility of replacing natural sand (NS) with recycled sand (RS) to enhance the mechanical property of engineered cementitious composites (ECC). For a comparative study, ECCs incorporating natural sands (NS) and recycled sands with different sieve sizes were taken as experimental subjects. The results demonstrated that RS-ECC possessed better tensile properties featuring saturated cracks and superior strain-hardening behavior than that of NS-ECC. The highest tensile strain capacity of RS-ECC was up to 7%. Meanwhile, the compressive and flexural strengths of RS-ECC were over 50 and 20 MPa. The pseudo-strain-hardening (PSH) index of the RS-ECC-20 grid and RS-ECC-12 grid were 141 and 201, which increased by 46% and 70% than that of NS-ECC. Furthermore, the thicker weak ITZ and comparatively aggregate/ITZ ratio were found in the RE-ECC by a microstructure test, which revealed and explained the mechanism for the lower matrix fracture toughness of RS-ECC.

Keywords: engineered cementitious composites; recycled sand; strain-hardening behavior; tensile strain capacity; fracture toughness (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/2071-1050/14/20/13530/pdf (application/pdf)
https://www.mdpi.com/2071-1050/14/20/13530/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jsusta:v:14:y:2022:i:20:p:13530-:d:947542

Access Statistics for this article

Sustainability is currently edited by Ms. Alexandra Wu

More articles in Sustainability from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().