Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates

Ling-Yu Xu; Bo-Tao Huang; Jian-Cong Lao; Jie Yao; Victor C. Li; Jian-Guo Dai

doi:10.1016/j.cemconcomp.2022.104896

Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates

Ling-Yu Xu, Bo-Tao Huang^*, Jian-Cong Lao, Jie Yao, Victor C. Li, Jian-Guo Dai^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

161 Citations (Scopus)

Abstract

Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) incorporating artificial geopolymer aggregates (GPA) were developed and over-saturated cracking (i.e., average tensile crack spacing smaller than the theoretical limit) was observed in this novel material. The developed UHS-ECC exhibited an ultra-high compressive strength (over 150 MPa) and an ultra-high tensile ductility (over 8%) simultaneously. The influences of GPA size on the matrix properties, tensile performance, micromechanics, and cracking behavior of UHS-ECC were systematically investigated. Over-saturated cracking and double-stage crack evolution (i.e., a bilinear relation between average crack width and tensile strain) were observed in UHS-ECC with GPA size smaller than 0.60 mm, while saturated cracking and single-stage crack evolution (i.e., a linear relation between average crack width and tensile strain) were observed in the other groups. Finally, the mechanism of over-saturated cracking and double-stage crack evolution was illustrated. The findings of this study extend the fundamental knowledge of ECC technology, which is meaningful for designing and developing UHS-ECC materials towards ultra-high tensile ductility. © 2022 Elsevier Ltd

Original language	English
Article number	104896
Journal	Cement and Concrete Composites
Volume	136
Online published	12 Dec 2022
DOIs	https://doi.org/10.1016/j.cemconcomp.2022.104896
Publication status	Published - Feb 2023
Externally published	Yes

Funding

The authors would like to acknowledge the financial support received from NSFC/RGC Joint Research Scheme (No. N_PolyU542/20 ), Research Centre for Resources Engineering towards Carbon Neutrality (No. BBC7 ), and R&D Project of China Overseas Holdings Limited (No. COHL-2021-Z-1-03 ). Ling-Yu Xu acknowledges the PhD studentship offered by The Hong Kong Polytechnic University. Bo-Tao Huang and Jian-Cong Lao would like to acknowledge the support by the Hong Kong Innovation and Technology Fund (No. ITS/077/18FX ) through the Research Talent Hub.

Research Keywords

Alkali-activated material
Artificial aggregate
Engineered Cementitious Composites (ECC)
Geopolymer
Multiple cracking
Strain-Hardening Cementitious Composites (SHCC)
Ultra-high-performance concrete (UHPC)

RGC Funding Information

RGC-funded

Access Output

10.1016/j.cemconcomp.2022.104896

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{ee7fef78238a4adb895da6758be83477,

title = "Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates",

abstract = "Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) incorporating artificial geopolymer aggregates (GPA) were developed and over-saturated cracking (i.e., average tensile crack spacing smaller than the theoretical limit) was observed in this novel material. The developed UHS-ECC exhibited an ultra-high compressive strength (over 150 MPa) and an ultra-high tensile ductility (over 8%) simultaneously. The influences of GPA size on the matrix properties, tensile performance, micromechanics, and cracking behavior of UHS-ECC were systematically investigated. Over-saturated cracking and double-stage crack evolution (i.e., a bilinear relation between average crack width and tensile strain) were observed in UHS-ECC with GPA size smaller than 0.60 mm, while saturated cracking and single-stage crack evolution (i.e., a linear relation between average crack width and tensile strain) were observed in the other groups. Finally, the mechanism of over-saturated cracking and double-stage crack evolution was illustrated. The findings of this study extend the fundamental knowledge of ECC technology, which is meaningful for designing and developing UHS-ECC materials towards ultra-high tensile ductility. {\textcopyright} 2022 Elsevier Ltd",

keywords = "Alkali-activated material, Artificial aggregate, Engineered Cementitious Composites (ECC), Geopolymer, Multiple cracking, Strain-Hardening Cementitious Composites (SHCC), Ultra-high-performance concrete (UHPC)",

author = "Ling-Yu Xu and Bo-Tao Huang and Jian-Cong Lao and Jie Yao and Li, {Victor C.} and Jian-Guo Dai",

year = "2023",

month = feb,

doi = "10.1016/j.cemconcomp.2022.104896",

language = "English",

volume = "136",

journal = "Cement and Concrete Composites",

issn = "0958-9465",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates

AU - Xu, Ling-Yu

AU - Huang, Bo-Tao

AU - Lao, Jian-Cong

AU - Yao, Jie

AU - Li, Victor C.

AU - Dai, Jian-Guo

PY - 2023/2

Y1 - 2023/2

N2 - Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) incorporating artificial geopolymer aggregates (GPA) were developed and over-saturated cracking (i.e., average tensile crack spacing smaller than the theoretical limit) was observed in this novel material. The developed UHS-ECC exhibited an ultra-high compressive strength (over 150 MPa) and an ultra-high tensile ductility (over 8%) simultaneously. The influences of GPA size on the matrix properties, tensile performance, micromechanics, and cracking behavior of UHS-ECC were systematically investigated. Over-saturated cracking and double-stage crack evolution (i.e., a bilinear relation between average crack width and tensile strain) were observed in UHS-ECC with GPA size smaller than 0.60 mm, while saturated cracking and single-stage crack evolution (i.e., a linear relation between average crack width and tensile strain) were observed in the other groups. Finally, the mechanism of over-saturated cracking and double-stage crack evolution was illustrated. The findings of this study extend the fundamental knowledge of ECC technology, which is meaningful for designing and developing UHS-ECC materials towards ultra-high tensile ductility. © 2022 Elsevier Ltd

AB - Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) incorporating artificial geopolymer aggregates (GPA) were developed and over-saturated cracking (i.e., average tensile crack spacing smaller than the theoretical limit) was observed in this novel material. The developed UHS-ECC exhibited an ultra-high compressive strength (over 150 MPa) and an ultra-high tensile ductility (over 8%) simultaneously. The influences of GPA size on the matrix properties, tensile performance, micromechanics, and cracking behavior of UHS-ECC were systematically investigated. Over-saturated cracking and double-stage crack evolution (i.e., a bilinear relation between average crack width and tensile strain) were observed in UHS-ECC with GPA size smaller than 0.60 mm, while saturated cracking and single-stage crack evolution (i.e., a linear relation between average crack width and tensile strain) were observed in the other groups. Finally, the mechanism of over-saturated cracking and double-stage crack evolution was illustrated. The findings of this study extend the fundamental knowledge of ECC technology, which is meaningful for designing and developing UHS-ECC materials towards ultra-high tensile ductility. © 2022 Elsevier Ltd

KW - Alkali-activated material

KW - Artificial aggregate

KW - Engineered Cementitious Composites (ECC)

KW - Geopolymer

KW - Multiple cracking

KW - Strain-Hardening Cementitious Composites (SHCC)

KW - Ultra-high-performance concrete (UHPC)

UR - http://www.scopus.com/inward/record.url?scp=85144077399&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85144077399&origin=recordpage

U2 - 10.1016/j.cemconcomp.2022.104896

DO - 10.1016/j.cemconcomp.2022.104896

M3 - RGC 21 - Publication in refereed journal

AN - SCOPUS:85144077399

SN - 0958-9465

VL - 136

JO - Cement and Concrete Composites

JF - Cement and Concrete Composites

M1 - 104896

ER -

Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

NSFC: Research and Development on Waste Ash/Slag-based Artificial Aggregates for Applications in Concrete

Cite this

Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates

Abstract

Funding

Research Keywords

RGC Funding Information

Access Output

Other Access Options

Permanent Link

Other Files and Links

Fingerprint

Projects

NSFC: Research and Development on Waste Ash/Slag-based Artificial Aggregates for Applications in Concrete

Cite this