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Development of engineered cementitious composites (ECC) using artificial fine aggregates
Highlights ECC using artificial fine aggregates were developed for the first time. The developed high-strength ECC incorporating geopolymer and cement-bonded artificial fine aggregates achieved a compressive strength of 122.4 and 120.9 MPa, respectively. Among the existing ambient-cured high-strength ECC, the developed geopolymer aggregate ECC recorded the highest tensile strain capacity (9.0%). For high-strength ECC, the use of geopolymer artificial fine aggregate resulted in more saturated multiple cracking.
Abstract In this study, Engineered/Strain-Hardening Cementitious Composites (ECC/SHCC) using artificial fine aggregates [i.e., geopolymer aggregates (GPA) and cement-bonded aggregates (CBA)] were developed for the first time. The developed GPA-ECC and CBA-ECC showed a compressive strength over 120 MPa, and the GPA-ECC recorded the highest tensile strain capacity (9.0%) among the existing ambient-cured high-strength ECC in literature. Compared with fine silica sand ECC (FSS-ECC) as a control mix, GPA-ECC and CBA-ECC showed lower compressive and tensile strength, owing to their lower aggregate strengths. From digital image correlation analysis, a more saturated multiple cracking behavior was observed for GPA-ECC as compared to CBA-ECC and FSS-ECC. In addition, the use of artificial aggregates had marginal effect on the crack width distribution of high-strength ECC. The findings in this study demonstrate the feasibility of using artificial fine aggregates in ECC production and provide a new avenue to improve ductility and sustainability for ECC materials.
Development of engineered cementitious composites (ECC) using artificial fine aggregates
Highlights ECC using artificial fine aggregates were developed for the first time. The developed high-strength ECC incorporating geopolymer and cement-bonded artificial fine aggregates achieved a compressive strength of 122.4 and 120.9 MPa, respectively. Among the existing ambient-cured high-strength ECC, the developed geopolymer aggregate ECC recorded the highest tensile strain capacity (9.0%). For high-strength ECC, the use of geopolymer artificial fine aggregate resulted in more saturated multiple cracking.
Abstract In this study, Engineered/Strain-Hardening Cementitious Composites (ECC/SHCC) using artificial fine aggregates [i.e., geopolymer aggregates (GPA) and cement-bonded aggregates (CBA)] were developed for the first time. The developed GPA-ECC and CBA-ECC showed a compressive strength over 120 MPa, and the GPA-ECC recorded the highest tensile strain capacity (9.0%) among the existing ambient-cured high-strength ECC in literature. Compared with fine silica sand ECC (FSS-ECC) as a control mix, GPA-ECC and CBA-ECC showed lower compressive and tensile strength, owing to their lower aggregate strengths. From digital image correlation analysis, a more saturated multiple cracking behavior was observed for GPA-ECC as compared to CBA-ECC and FSS-ECC. In addition, the use of artificial aggregates had marginal effect on the crack width distribution of high-strength ECC. The findings in this study demonstrate the feasibility of using artificial fine aggregates in ECC production and provide a new avenue to improve ductility and sustainability for ECC materials.
Development of engineered cementitious composites (ECC) using artificial fine aggregates
Xu, Ling-Yu (author) / Huang, Bo-Tao (author) / Dai, Jian-Guo (author)
2021-08-28
Article (Journal)
Electronic Resource
English
Development of green engineered cementitious composites using iron ore tailings as aggregates
| British Library Online Contents | 2013
Development of green engineered cementitious composites using iron ore tailings as aggregates
| Online Contents | 2013