Bond behaviour between NSM CFRP strips and concrete substrate using single-lap shear testing with cement-based adhesives. Issue 1 (2nd January 2016)

• Record Type: Journal Article
• Authors: Al-Saadi, Nihad Tareq Khshain; Al-Mahaidi, Riadh; Abdouka, Kamiran
• Is Part Of: Australian journal of structural engineering. Volume 17:Issue 1(2016)
• Page Start: 28
• Page End: 38
• Publication Date: 2016-01-02
• Subjects: Near-surface mounted (NSM) -- carbon fibre-reinforced polymer (CFRP) -- concrete -- bond -- cement-based adhesive -- strips; Structural engineering -- Periodicals; Structural engineering -- Australia -- Periodicals; Electronic journals; 624.1
• DOI: 10.1080/13287982.2015.1116180
• Languages: English
• ISSNs: 1328-7982

Abstract

Abstract: The efficiency of strengthening RC beams using the near-surface mounted (NSM) carbon fibre-reinforced polymer (CFRP) method depends on the bond between the NSM CFRP and the concrete substrate. This study presents the results of a study of the bond efficiency of NSM CFRP strips with two different CFRP strip surface types (smooth, rough) and dimensions (1.4 × 10 mm, 1.4 × 20 mm) with cement-based adhesive using single-lap shear tests. The study also contains development of a statistical model to predict the bond strength (pull-out force). It was found that the rough surface CFRP showed superior bond strength (pull-out force) when compared to the smooth surface CFRP. Moreover, there is a very good agreement between the experimental and predicted results.