Material processing, microstructure, and composite properties of low carbon Engineered Cementitious Composites (ECC)
Journal Article
·
· Cement and Concrete Composites
- Univ. of Michigan, Ann Arbor, MI (United States); OSTI
- Univ. of Michigan, Ann Arbor, MI (United States)
Traditional PVA fiber-reinforced Engineered Cementitious Composites (ECC) show high tensile ductility and superior durability with tight crack width, but the high cost and embodied carbon can hinder its wider application in infrastructures. The objective of this study is to develop a better understanding of the fresh and hardened properties of an ECC that employs a lower embodied-carbon binder, Limestone Calcined Clay Cement (LC3), and lower-cost PP fiber that is widely available. Specifically, the interrelations between material processing, microstructure, and composite properties were studied experimentally. The results showed that ECC with high tensile ductility up to 9% tensile strain and tight crack width with 50 μm at 2% tensile strain can be achieved. It was found that a matrix paste with higher viscosity generally enhanced fiber dispersion uniformity and robustness in tensile strain-hardening. The paste viscosity is increased when OPC is replaced by LC3 and can be tuned with superplasticizer content. Larger maximum flaw size leads to lower first crack strength, beneficial for microcrack initiation and multiple cracking. This study generates fundamental knowledge linking processing-microstructure-performance of PP-LC3-ECC. This class of low embodied carbon ECC with tight crack width is expected to contribute to reducing the carbon footprint of the built environment.
- Research Organization:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Organization:
- USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- Grant/Contract Number:
- AR0001141
- OSTI ID:
- 2422321
- Alternate ID(s):
- OSTI ID: 1891175
- Journal Information:
- Cement and Concrete Composites, Journal Name: Cement and Concrete Composites Journal Issue: C Vol. 134; ISSN 0958-9465
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mechanical and self-healing behavior of low carbon engineered cementitious composites reinforced with PP-fibers
Crack width control and mechanical properties of low carbon engineered cementitious composites (ECC)
Optimization of matrix viscosity improves polypropylene fiber dispersion and properties of engineered cementitious composites
Journal Article
·
Fri Jun 19 20:00:00 EDT 2020
· Construction and Building Materials
·
OSTI ID:1637440
Crack width control and mechanical properties of low carbon engineered cementitious composites (ECC)
Journal Article
·
Sun Aug 07 20:00:00 EDT 2022
· Construction and Building Materials
·
OSTI ID:1977029
Optimization of matrix viscosity improves polypropylene fiber dispersion and properties of engineered cementitious composites
Journal Article
·
Wed Jul 13 20:00:00 EDT 2022
· Construction and Building Materials
·
OSTI ID:1977028