Details
| Original language | English |
|---|---|
| Article number | 110793 |
| Journal | Journal of Building Engineering |
| Volume | 97 |
| Early online date | 26 Sept 2024 |
| Publication status | E-pub ahead of print - 26 Sept 2024 |
Abstract
The spinning techniques used for ultra-high molecular weight polyethylene (UHMWPE) fibers are crucial for enhancing the performance of ECC. However, the specific effects of different spinning techniques for UHMWPE fibers on ECC's performance are not well understood. To address this gap, this study investigates the influence of dry-spun and wet-spun spinning techniques on both the macroscopic mechanical properties and microscopic characteristics of full-strength-grade ECC. Comprehensive tests were conducted, including assessments of tensile, compressive, and flexural strength. Additionally, detailed CT-based 3D reconstruction and SEM analysis were performed to examine the pore structure, fiber orientation, and micromorphology. The findings reveal that the surface irregularities and roughness of dry-spun fibers lead to stress concentration, whereas the more uniform surface of wet-spun fibers enhances their bridging performance. Compared to dry-spun fibers, wet-spun fibers significantly improve ECC's tensile and flexural properties, enhancing ultimate tensile strength by up to 22.7 % and ultimate flexural deflection by up to 50.2 %. Additionally, wet-spun fibers result in a more uniform pore structure and better fiber alignment, creating a denser and more compact matrix. These microstructural improvements contribute to superior load transfer and energy absorption characteristics, enhancing ECC's overall performance and durability. These results underscore the critical role of fiber spinning techniques in optimizing ECC performance, contributing to more durable and sustainable structures in high-performance construction applications.
Keywords
- Dry spinning, Mechanical properties, Microscopic characteristics, UHMWPE fibers, Wet spinning
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Architecture
- Engineering(all)
- Building and Construction
- Engineering(all)
- Safety, Risk, Reliability and Quality
- Engineering(all)
- Mechanics of Materials
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In: Journal of Building Engineering, Vol. 97, 110793, 15.11.2024.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Comparative analysis of spinning techniques on the performance of full-strength-grade engineered cementitious composites
T2 - Mechanical characteristics, pore structure, fiber distribution, micromorphology
AU - Cai, Minjin
AU - Zhu, Hehua
AU - Rabczuk, Timon
AU - Zhuang, Xiaoying
N1 - Publisher Copyright: © Elsevier Ltd
PY - 2024/9/26
Y1 - 2024/9/26
N2 - The spinning techniques used for ultra-high molecular weight polyethylene (UHMWPE) fibers are crucial for enhancing the performance of ECC. However, the specific effects of different spinning techniques for UHMWPE fibers on ECC's performance are not well understood. To address this gap, this study investigates the influence of dry-spun and wet-spun spinning techniques on both the macroscopic mechanical properties and microscopic characteristics of full-strength-grade ECC. Comprehensive tests were conducted, including assessments of tensile, compressive, and flexural strength. Additionally, detailed CT-based 3D reconstruction and SEM analysis were performed to examine the pore structure, fiber orientation, and micromorphology. The findings reveal that the surface irregularities and roughness of dry-spun fibers lead to stress concentration, whereas the more uniform surface of wet-spun fibers enhances their bridging performance. Compared to dry-spun fibers, wet-spun fibers significantly improve ECC's tensile and flexural properties, enhancing ultimate tensile strength by up to 22.7 % and ultimate flexural deflection by up to 50.2 %. Additionally, wet-spun fibers result in a more uniform pore structure and better fiber alignment, creating a denser and more compact matrix. These microstructural improvements contribute to superior load transfer and energy absorption characteristics, enhancing ECC's overall performance and durability. These results underscore the critical role of fiber spinning techniques in optimizing ECC performance, contributing to more durable and sustainable structures in high-performance construction applications.
AB - The spinning techniques used for ultra-high molecular weight polyethylene (UHMWPE) fibers are crucial for enhancing the performance of ECC. However, the specific effects of different spinning techniques for UHMWPE fibers on ECC's performance are not well understood. To address this gap, this study investigates the influence of dry-spun and wet-spun spinning techniques on both the macroscopic mechanical properties and microscopic characteristics of full-strength-grade ECC. Comprehensive tests were conducted, including assessments of tensile, compressive, and flexural strength. Additionally, detailed CT-based 3D reconstruction and SEM analysis were performed to examine the pore structure, fiber orientation, and micromorphology. The findings reveal that the surface irregularities and roughness of dry-spun fibers lead to stress concentration, whereas the more uniform surface of wet-spun fibers enhances their bridging performance. Compared to dry-spun fibers, wet-spun fibers significantly improve ECC's tensile and flexural properties, enhancing ultimate tensile strength by up to 22.7 % and ultimate flexural deflection by up to 50.2 %. Additionally, wet-spun fibers result in a more uniform pore structure and better fiber alignment, creating a denser and more compact matrix. These microstructural improvements contribute to superior load transfer and energy absorption characteristics, enhancing ECC's overall performance and durability. These results underscore the critical role of fiber spinning techniques in optimizing ECC performance, contributing to more durable and sustainable structures in high-performance construction applications.
KW - Dry spinning
KW - Mechanical properties
KW - Microscopic characteristics
KW - UHMWPE fibers
KW - Wet spinning
UR - http://www.scopus.com/inward/record.url?scp=85205291919&partnerID=8YFLogxK
U2 - 10.1016/j.jobe.2024.110793
DO - 10.1016/j.jobe.2024.110793
M3 - Article
AN - SCOPUS:85205291919
VL - 97
JO - Journal of Building Engineering
JF - Journal of Building Engineering
M1 - 110793
ER -