Durability of steel reinforced polyurethane-to-substrate bond
Authors:
- Stefano De Santis,
- Teresa Stryszewska,
- Simone Bandini,
- Gianmarco De Felice,
- Łukasz Hojdys,
- Piotr Krajewski,
- Arkadiusz Kwiecień,
- Francesca Roscini,
- Bogusław Zając
Abstract
Steel reinforced polyurethane (SRPU) is an innovative composite material which comprises a unidirectional steel textile and a polyurethane matrix. By the virtue of the high flexibility of the polyurethane, which redistributes the shear stresses between reinforcement and substrate, SRPU has recently proved effective for specific externally bonded strengthening applications. The long-term SRPU bond performances, however, have not been sufficiently investigated to date. Nevertheless, they are of the utmost importance for mitigating the risks and the costs associated to damage and repair/substitution in the long-term, and this is crucial for the sustainability of the building stock and of the rehabilitation measures developed for its lasting safeguarding. In this work, the durability of the bond of SRPU applied to masonry substrates was investigated. Single-lap shear bond tests were carried after drying, immersion in alkaline or substitute ocean water solutions, exposure to high humidity, and freeze-thaw cycles. Bond tests and SEM and EDS analyses showed that artificial aging did not generally affect the SRPU bond performance. The zinc coating, however, proved sensitive to the prolonged attack of alkali, which modified the interface between steel cords and polyurethane, suggesting the need of protecting the fabric by a complete covering with the matrix.
- Record ID
- CUT29f381f4561c415cb464f257669139c0
- Publication categories
- ;
- Author
- Journal series
- Composites Part B-Engineering, ISSN 1359-8368, e-ISSN 1879-1069
- Issue year
- 2018
- Vol
- 153
- Pages
- 194-204
- Other elements of collation
- fot.; wykr.; Bibliografia (na s.) - 204; Bibliografia (liczba pozycji) - 41; Oznaczenie streszczenia - Abstr.; Data udostępnienia on-line - 2018-07-23; Numeracja w czasopiśmie - Vol. 153
- Keywords in English
- artificial aging, energy-dispersive X-ray spectroscopy (EDS) analysis, freeze-thaw, masonry, scanning electron microscope (SEM) analysis, shear bond test, SRPU, strengthening, zinc coating
- DOI
- DOI:10.1016/j.compositesb.2018.07.043 Opening in a new tab
- URL
- https://www.sciencedirect.com/science/article/pii/S135983681831182X Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 45
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT29f381f4561c415cb464f257669139c0/
- URN
urn:pkr-prod:CUT29f381f4561c415cb464f257669139c0
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.