Towards sustainable repairs: substrate-repair interface mode-I fracture analysis. (1st January 2014)

• Record Type: Journal Article
• Authors: Zanotti, Cristina; Banthia, Nemkumar; Plizzari, Giovanni
• Is Part Of: International journal of sustainable materials and structural systems. Volume 1: Number 3(2014)
• Page Start: 265
• Page End: 281
• Publication Date: 2014-01-01
• Subjects: repair -- interface -- bond -- adhesion -- mode-I fracture -- contoured double cantilever beam test -- fibre reinforced concrete -- FRC -- durability -- cracking -- crack kinking -- crack growth resistance -- splitting; Materials -- Environmental aspects -- Periodicals; Sustainable engineering -- Periodicals; Sustainable buildings -- Periodicals; 620.1
• Languages: English
• ISSNs: 2043-8621

Abstract

An experimental programme for the optimisation of concrete structural and non-structural repair was performed. The programme focused on the development of sustainable durable repairs throughout the enhancement of substrate-repair bond and compatibility, as well as the development of efficient solutions for crack control. As part of the programme, mode-I fracture characterisation of a substrate-repair interface was addressed. The repair material was a mortar reinforced with polyvinyl alcohol (PVA) fibres. Experimental tests, crack growth resistance analysis and major results are presented and discussed in this paper. Mode-I crack growth resistance tests were performed by means of the contoured double cantilever beam (CDCB) test. Tensile fracture analysis was supported by splitting (indirect) tension tests.