Ultra-low carbon lightweight engineered cementitious composite: Design and material characterization
Lightweight engineered cementitious composites (LWECC) are prized for their exceptional tensile performance, durability, and low self-weight. However, the elevated cement usage in ECC results in a substantial carbon footprint, thus placing significant ecological pressures. This study employed calciu...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-12-01
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| Series: | Case Studies in Construction Materials |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214509523006162 |
| _version_ | 1797454611969212416 |
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| author | Bo-Yu Deng Kang-Tai Yan Zi-Ming Tang Guo-Rong Liu Feng Qi Xu-Yang Li Ling-Zhi Li |
| author_facet | Bo-Yu Deng Kang-Tai Yan Zi-Ming Tang Guo-Rong Liu Feng Qi Xu-Yang Li Ling-Zhi Li |
| author_sort | Bo-Yu Deng |
| collection | DOAJ |
| description | Lightweight engineered cementitious composites (LWECC) are prized for their exceptional tensile performance, durability, and low self-weight. However, the elevated cement usage in ECC results in a substantial carbon footprint, thus placing significant ecological pressures. This study employed calcium sulfoaluminate-activated supersulfated cement (CSA-SSC) to develop the ultra-low carbon LWECC. The influence of silica fume, lightweight filler, PE fiber contents and water-to-binder ratio on the mechanical characteristics of ULL-ECC were investigated, in terms of density, tensile and compressive properties. The fracture toughness test, single-crack tensile test, mercury intrusion porosimeter (MIP), scanning electronic microscope (SEM) and X-ray diffraction (XRD) analysis were conducted to establish a connection between macro behavior and micro-scale performance. The results reveal ULL-ECC's remarkable tensile behavior, demonstrating a tensile strength of 7.1 MPa and an impressive strain capacity of 12.6%, with compressive strengths ranging from 50.3 MPa to 65.1 MPa. The carbon footprint of ULL-ECC accounts to only 35% of conventional concrete and 22% of traditional ECC. Through the synergistic utilization of eco-friendly FAC, CSA-SSC, and high-strength PE fiber, ULL-ECC not only showcases exceptional mechanical properties but also embodies a substantial improvement in sustainability, coupled with a reduction in self-weight. |
| first_indexed | 2024-03-09T15:39:39Z |
| format | Article |
| id | doaj.art-2553a2640a6d4b508f6729862024512f |
| institution | Directory Open Access Journal |
| issn | 2214-5095 |
| language | English |
| last_indexed | 2024-03-09T15:39:39Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Construction Materials |
| spelling | doaj.art-2553a2640a6d4b508f6729862024512f2023-11-25T04:48:48ZengElsevierCase Studies in Construction Materials2214-50952023-12-0119e02436Ultra-low carbon lightweight engineered cementitious composite: Design and material characterizationBo-Yu Deng0Kang-Tai Yan1Zi-Ming Tang2Guo-Rong Liu3Feng Qi4Xu-Yang Li5Ling-Zhi Li6College of Civil Engineering, Tongji University, Shanghai, ChinaCollege of Civil Engineering, Tongji University, Shanghai, ChinaCollege of Civil Engineering, Tongji University, Shanghai, China; Corresponding author.Ningxia Institute of Building Science Research Group Co., Ltd, Ningxia 750021, ChinaNingxia Institute of Building Science Research Group Co., Ltd, Ningxia 750021, ChinaCollege of Civil Engineering, Tongji University, Shanghai, ChinaCollege of Civil Engineering, Tongji University, Shanghai, ChinaLightweight engineered cementitious composites (LWECC) are prized for their exceptional tensile performance, durability, and low self-weight. However, the elevated cement usage in ECC results in a substantial carbon footprint, thus placing significant ecological pressures. This study employed calcium sulfoaluminate-activated supersulfated cement (CSA-SSC) to develop the ultra-low carbon LWECC. The influence of silica fume, lightweight filler, PE fiber contents and water-to-binder ratio on the mechanical characteristics of ULL-ECC were investigated, in terms of density, tensile and compressive properties. The fracture toughness test, single-crack tensile test, mercury intrusion porosimeter (MIP), scanning electronic microscope (SEM) and X-ray diffraction (XRD) analysis were conducted to establish a connection between macro behavior and micro-scale performance. The results reveal ULL-ECC's remarkable tensile behavior, demonstrating a tensile strength of 7.1 MPa and an impressive strain capacity of 12.6%, with compressive strengths ranging from 50.3 MPa to 65.1 MPa. The carbon footprint of ULL-ECC accounts to only 35% of conventional concrete and 22% of traditional ECC. Through the synergistic utilization of eco-friendly FAC, CSA-SSC, and high-strength PE fiber, ULL-ECC not only showcases exceptional mechanical properties but also embodies a substantial improvement in sustainability, coupled with a reduction in self-weight.http://www.sciencedirect.com/science/article/pii/S2214509523006162Engineered cementitious composites (ECC)Supersulfated cement (SSC)Lightweight concreteMechanical performanceSustainability |
| spellingShingle | Bo-Yu Deng Kang-Tai Yan Zi-Ming Tang Guo-Rong Liu Feng Qi Xu-Yang Li Ling-Zhi Li Ultra-low carbon lightweight engineered cementitious composite: Design and material characterization Case Studies in Construction Materials Engineered cementitious composites (ECC) Supersulfated cement (SSC) Lightweight concrete Mechanical performance Sustainability |
| title | Ultra-low carbon lightweight engineered cementitious composite: Design and material characterization |
| title_full | Ultra-low carbon lightweight engineered cementitious composite: Design and material characterization |
| title_fullStr | Ultra-low carbon lightweight engineered cementitious composite: Design and material characterization |
| title_full_unstemmed | Ultra-low carbon lightweight engineered cementitious composite: Design and material characterization |
| title_short | Ultra-low carbon lightweight engineered cementitious composite: Design and material characterization |
| title_sort | ultra low carbon lightweight engineered cementitious composite design and material characterization |
| topic | Engineered cementitious composites (ECC) Supersulfated cement (SSC) Lightweight concrete Mechanical performance Sustainability |
| url | http://www.sciencedirect.com/science/article/pii/S2214509523006162 |
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