Cementitious composites reinforced with continuous carbon fibres for strengthening of concrete structures
2003 (English)In: Cement & Concrete Composites, ISSN 0958-9465, E-ISSN 1873-393X, Vol. 25, no 3, 387-394 p.Article in journal (Refereed) Published
Continuous fibre wrapping technique is becoming a common repair and strengthening technique for concrete structures. In this method continuous fibre sheets are bonded to the surface of a concrete structure using organic resins. The main disadvantages of this method are: (i) the use of resins (organic compounds) which are hazardous for the manual worker, and (ii) the low permeability of this type of organic materials. These problems could be solved if a cement-based matrix is used instead of epoxy matrix. In the current development stage one of the limiting parameter in a cementitious carbon fibre composite is the bond between the fibres and the cementitious matrix. The main objective of the study presented in this paper was to improve the bond between the carbon fibres and the cementitious matrix. Two possible methods were studied: (i) the design of a complex binder based on Portland cement with polymer and silica fume additions and (ii) surface treatment of the carbon fibres prior to their casting in the cementitious composite.
Place, publisher, year, edition, pages
2003. Vol. 25, no 3, 387-394 p.
strengthening, bond properties, carbon fibres, polymer modified cement, surface treatment of carbon fibres, bond strength, silica fume, fiber, microstructure, admixtures, interface, grc
IdentifiersURN: urn:nbn:se:kth:diva-22319ISI: 000181529100013OAI: oai:DiVA.org:kth-22319DiVA: diva2:341017
QC 201005252010-08-102010-08-102012-02-13Bibliographically approved