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Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates
https://orcid.org/0000-0002-8663-1369
https://orcid.org/0000-0002-9237-504X
https://orcid.org/0000-0002-8678-3493
https://orcid.org/0000-0001-9904-7914
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.
Graphical abstract Display Omitted
Highlights GPA-based UHS-ECC were developed with both ultra-high strength (over 150 MPa) and ultra-high ductility (over 8%). Over-saturated cracking was observed in UHS-ECC with GPA size smaller than 0.60 mm. UHS-ECC with over-saturated cracking exhibited a double-stage crack evolution. The mechanism of the over-saturated cracking of the GPA-based UHS-ECC is revealed. UHS-ECC with GPA size of 0.30–0.60 mm exhibited the highest strain-hardening potential.
Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates
https://orcid.org/0000-0002-8663-1369
https://orcid.org/0000-0002-9237-504X
https://orcid.org/0000-0002-8678-3493
https://orcid.org/0000-0001-9904-7914
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.
Graphical abstract Display Omitted
Highlights GPA-based UHS-ECC were developed with both ultra-high strength (over 150 MPa) and ultra-high ductility (over 8%). Over-saturated cracking was observed in UHS-ECC with GPA size smaller than 0.60 mm. UHS-ECC with over-saturated cracking exhibited a double-stage crack evolution. The mechanism of the over-saturated cracking of the GPA-based UHS-ECC is revealed. UHS-ECC with GPA size of 0.30–0.60 mm exhibited the highest strain-hardening potential.
Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates
https://orcid.org/0000-0002-8663-1369
https://orcid.org/0000-0002-9237-504X
https://orcid.org/0000-0002-8678-3493
https://orcid.org/0000-0001-9904-7914
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.
Graphical abstract Display Omitted
Highlights GPA-based UHS-ECC were developed with both ultra-high strength (over 150 MPa) and ultra-high ductility (over 8%). Over-saturated cracking was observed in UHS-ECC with GPA size smaller than 0.60 mm. UHS-ECC with over-saturated cracking exhibited a double-stage crack evolution. The mechanism of the over-saturated cracking of the GPA-based UHS-ECC is revealed. UHS-ECC with GPA size of 0.30–0.60 mm exhibited the highest strain-hardening potential.
Tensile over-saturated cracking of Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) with artificial geopolymer aggregates
Xu, Ling-Yu (Autor:in) / Huang, Bo-Tao (Autor:in) / Lao, Jian-Cong (Autor:in) / Yao, Jie (Autor:in) / Li, Victor C. (Autor:in) / Dai, Jian-Guo (Autor:in)
11.12.2022
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Flexural-Tensile-Strength Ratio in Engineered Cementitious Composites
| Online Contents | 1994
Flexural/Tensile-Strength Ratio in Engineered Cementitious Composites
| British Library Online Contents | 1994