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Greener strain-hardening cementitious composites (SHCC) with a novel alkali-activated cement
https://orcid.org/0000-0002-7333-0321
Abstract This paper focuses on developing strain-hardening cementitious composites (SHCCs) with a new alkali-activated cement (AAC). The AAC was synthesized with a calcined solid waste, i.e., cutter soil mixing residue (CSMR), as a primary precursor. The test variables included the water-to-binder (w/b) ratio and silica modulus (M s) of alkali activators. The binder chemistry, mechanical performances, and micromechanical parameters of the new SHCCs were investigated. Results demonstrated that a moderate w/b ratio with a high M s value favored the trade-off between the quantity of alkali-activated hydrates, matrix properties, and fiber bridging behaviors, leading to optimal overall macroscopic performances of the composites. The SHCCs with proper mix design exhibited high tensile strain capacities of 4.43–5.13% and sufficient compressive strengths at 3 days (23.6–28.9 MPa) and 28 days (32.7–56.3 MPa). Compared to Portland cement-based SHCCs, the new SHCCs achieved comparable mechanical properties, while possessing around 20% less embodied energy and 40% less CO2 emissions.
Greener strain-hardening cementitious composites (SHCC) with a novel alkali-activated cement
https://orcid.org/0000-0002-7333-0321
Abstract This paper focuses on developing strain-hardening cementitious composites (SHCCs) with a new alkali-activated cement (AAC). The AAC was synthesized with a calcined solid waste, i.e., cutter soil mixing residue (CSMR), as a primary precursor. The test variables included the water-to-binder (w/b) ratio and silica modulus (M s) of alkali activators. The binder chemistry, mechanical performances, and micromechanical parameters of the new SHCCs were investigated. Results demonstrated that a moderate w/b ratio with a high M s value favored the trade-off between the quantity of alkali-activated hydrates, matrix properties, and fiber bridging behaviors, leading to optimal overall macroscopic performances of the composites. The SHCCs with proper mix design exhibited high tensile strain capacities of 4.43–5.13% and sufficient compressive strengths at 3 days (23.6–28.9 MPa) and 28 days (32.7–56.3 MPa). Compared to Portland cement-based SHCCs, the new SHCCs achieved comparable mechanical properties, while possessing around 20% less embodied energy and 40% less CO2 emissions.
Greener strain-hardening cementitious composites (SHCC) with a novel alkali-activated cement
https://orcid.org/0000-0002-7333-0321
Abstract This paper focuses on developing strain-hardening cementitious composites (SHCCs) with a new alkali-activated cement (AAC). The AAC was synthesized with a calcined solid waste, i.e., cutter soil mixing residue (CSMR), as a primary precursor. The test variables included the water-to-binder (w/b) ratio and silica modulus (M s) of alkali activators. The binder chemistry, mechanical performances, and micromechanical parameters of the new SHCCs were investigated. Results demonstrated that a moderate w/b ratio with a high M s value favored the trade-off between the quantity of alkali-activated hydrates, matrix properties, and fiber bridging behaviors, leading to optimal overall macroscopic performances of the composites. The SHCCs with proper mix design exhibited high tensile strain capacities of 4.43–5.13% and sufficient compressive strengths at 3 days (23.6–28.9 MPa) and 28 days (32.7–56.3 MPa). Compared to Portland cement-based SHCCs, the new SHCCs achieved comparable mechanical properties, while possessing around 20% less embodied energy and 40% less CO2 emissions.
Greener strain-hardening cementitious composites (SHCC) with a novel alkali-activated cement
Li, Yuelin (author) / Yin, Jian (author) / Yuan, Qiang (author) / Huang, Linchong (author) / Li, Jiabin (author)
2022-08-24
Article (Journal)
Electronic Resource
English
Micromechanics-Based Design of Strain Hardening Cementitious Composites (SHCC)
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Durability of strain-hardening cement-based composites (SHCC)
| Online Contents | 2012
Durability of strain-hardening cement-based composites (SHCC)
| Online Contents | 2012
Durability of strain-hardening cement-based composites (SHCC)
| Springer Verlag | 2012