Enhanced Impact Strength of Ultra-High-Performance Concrete Using Steel Fiber and Polyurethane Grout Materials: A Comparative Study

Autor:	Ali Al-shawafi, Han Zhu, S. I. Haruna, Yasser E. Ibrahim, Saleh Ahmed Luqsum
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	UHPC U-shaped specimen digital image correlation impact strength PU grouting materials Chemicals: Manufacture use etc. TP200-248 Textile bleaching dyeing printing etc. TP890-933 Biology (General) QH301-705.5 Physics QC1-999
Zdroj:	Fibers, Vol 12, Iss 9, p 77 (2024)
Druh dokumentu:	article
ISSN:	12090077 2079-6439
DOI:	10.3390/fib12090077
Popis:	This study examined the impact properties of ultra-high-performance concrete (UHPC) mixtures with steel fiber (SF) and retrofitted with polyurethane (PU) grouting using repeated drop-weight tests. Micro-steel fiber was added to UHPC mixes from 0 to 3% Vf, and PU grouting overlays of 5 mm, 10 mm, and 15 mm were applied. Digital image correlation (DIC) was used to analyze failure modes. The results showed significant impact durability and energy absorption improvements with increased SF content and thicker PU overlays. UHPC-15PU exhibited 363% and 449% higher first crack and failure strengths than UHPC-5PU. DIC analysis confirmed the failure patterns of the U-shaped UHPC specimen under impact load conditions.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/f2855f6704a4461cb36bcc33a3516971 Zobrazit plný text záznamu View record in DOAJ