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Using ultrafine fly ash to achieve low-carbon, high strength and high toughness engineered cementitious composites LC-HSTC

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autorschaft

  • Minjin Cai
  • Hailiang Zhu
  • Yang Wan
  • Hehua Zhu
  • Xiaoying Zhuang

Organisationseinheiten

Externe Organisationen

  • Tongji University
  • Bauhaus-Universität Weimar
  • Shanghai Tunnel Engineering Co. Ltd.
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Details

OriginalspracheEnglisch
Aufsatznummere03259
Seitenumfang24
FachzeitschriftCase Studies in Construction Materials
Jahrgang20
Frühes Online-Datum10 Mai 2024
PublikationsstatusVeröffentlicht - Juli 2024

Abstract

Conventional green engineered cementitious composites (ECC) with ordinary Grade I fly ash usually show insufficient tensile strength and toughness. To produce a low-carbon, high strength, and high toughness ECC (LC-HSTC), this study used ultrafine fly ash to substitute 80% binder mass. The ultrafine fly ash has an average size of 2.5 um, which is 5 times smaller than that of ordinary Grade I fly ash. A series of comparative tests were carried to investigate the workability, tensile behavior, tensile toughness, flexural property, compressive strength, fiber bridging ability of the LC-HSTC. Results show that the tensile strength, elongation, flexural strength, compressive strength and strain energy density of the LC-HSTC is 11 MPa, 6.5%, 27 MPa, 88 MPa and 500 kJ/m3, respectively, indicating a significant enhancement in the comprehensive performance compared to other similar materials. Sustainability analysis reveals that the cost of LC-HSTC (526.83 $/m3) is comparable to the other green fly ash ECCs and its embodied carbon (348.74 kg/m3) is over 17.75% lower than others. The findings indicate that ultrafine fly ash has significant advantages for the development of high strength and low carbon ECC.

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Using ultrafine fly ash to achieve low-carbon, high strength and high toughness engineered cementitious composites LC-HSTC. / Cai, Minjin; Zhu, Hailiang; Wan, Yang et al.
in: Case Studies in Construction Materials, Jahrgang 20, e03259, 07.2024.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Cai, M, Zhu, H, Wan, Y, Zhu, H, Rabczuk, T & Zhuang, X 2024, 'Using ultrafine fly ash to achieve low-carbon, high strength and high toughness engineered cementitious composites LC-HSTC', Case Studies in Construction Materials, Jg. 20, e03259. https://doi.org/10.1016/j.cscm.2024.e03259
Cai, M., Zhu, H., Wan, Y., Zhu, H., Rabczuk, T., & Zhuang, X. (2024). Using ultrafine fly ash to achieve low-carbon, high strength and high toughness engineered cementitious composites LC-HSTC. Case Studies in Construction Materials, 20, Artikel e03259. https://doi.org/10.1016/j.cscm.2024.e03259
Cai M, Zhu H, Wan Y, Zhu H, Rabczuk T, Zhuang X. Using ultrafine fly ash to achieve low-carbon, high strength and high toughness engineered cementitious composites LC-HSTC. Case Studies in Construction Materials. 2024 Jul;20:e03259. Epub 2024 Mai 10. doi: 10.1016/j.cscm.2024.e03259
Cai, Minjin ; Zhu, Hailiang ; Wan, Yang et al. / Using ultrafine fly ash to achieve low-carbon, high strength and high toughness engineered cementitious composites LC-HSTC. in: Case Studies in Construction Materials. 2024 ; Jahrgang 20.
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AU - Cai, Minjin

AU - Zhu, Hailiang

AU - Wan, Yang

AU - Zhu, Hehua

AU - Rabczuk, Timon

AU - Zhuang, Xiaoying

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PY - 2024/7

Y1 - 2024/7

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