Freeze-Thaw Endurance of Strain-Hardening Cementitious Composites with Low Clinker Content
Publikation: Beitrag in Buch/Konferenzbericht/Sammelband/Gutachten › Beitrag in Buch/Sammelband/Gutachten › Beigetragen › Begutachtung
Beitragende
Abstract
This paper delves into the influence of freeze-thaw (FT) cycles on the mechanical and cracking behavior of strain-hardening cementitious composites (SHCC). These composites were made using a low carbon cementitious matrix – limestone calcined clay cement (LC3) – and reinforced with 2 wt.% ultra-high molecular weight polyethylene (PE) fibers. Performance evaluation was conducted through uniaxial tension tests at a quasi-static deformation rate. Some specimens were preloaded to 1% strain before FT exposure, while the others were investigated without any damage (virgin). All the specimens were then subjected to standard FT cycles as per RILEM recommendations (TC 117-FDC) and exposed to both de-icing salt solution and distilled water for a total of 180 cycles. Following this exposure, further uniaxial tensile tests until ultimate failure were carried out. Analysis of mechanical properties unveiled a marginal deterioration in tensile strength post-FT cycles compared to reference samples. However, all composites sustained a reasonable strain capacity of a minimum of 2.5%, with an average crack width controlled at around 100 µm. From a physical degradation standpoint, evident scaling manifested only when specimens encountered FT cycles in de-icing salt solution. In general, SHCC made of the LC3 matrix showed exceptional resilience to such challenging environments, maintaining a level of performance deemed satisfactory.
Details
Originalsprache | Englisch |
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Titel | RILEM Bookseries |
Herausgeber (Verlag) | Springer Science and Business Media B.V. |
Seiten | 335-343 |
Seitenumfang | 9 |
Publikationsstatus | Veröffentlicht - 2024 |
Peer-Review-Status | Ja |
Publikationsreihe
Reihe | RILEM Bookseries |
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Band | 54 |
ISSN | 2211-0844 |
Externe IDs
ORCID | /0000-0001-6377-8336/work/173988288 |
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Schlagworte
ASJC Scopus Sachgebiete
Schlagwörter
- Durability, Freeze-thaw, LC, Low-carbon composites, SHCC