Title : EFFECT OF DIFFERENT BONDING AGENTS ON INTERFACE BOND STRENGTH BETWEEN OLD CONCRETE SUBSTRATE AND REPAIR MATERIAL OVERLAY
Authors : Amit Kumar Samajder, Subhajit Saraswati, Kaushik Bandyopadhayay, Dipesh Majumdar
Publication : 8 - 10, October 2015
Volume : 2
Pages :
Price : 250
Abstract : The most common type of concrete repair is removal of distressed area of concrete and subsequent repair with a compatible material. Good bond strength between repair materials and concrete substrate is a key factor for satisfactory performance of concrete repairs. The present study is primarily aimed to gain knowledge and create a database on evaluation of interfacial bond strength between old concrete substrate and new repair material overlay due to application of different bonding agents. Studies are carried out to compare the methods for evaluating bond strength between old concrete substrate and new repair material overlay. Investigations are also made to establish relation between various tests useful in real life situations. Detailed analysis of the various test results reveals that cement slurry gives the minimum and epoxy based bonding agent gives the maximum bond strength. Besides that shear bond strength is found to be more than the tensile bond strength. It is also found that the bond strength is generally affected by the test method used. The outcome of the present study may give great impetus towards greater understanding of the influence of bonding agent on interfacial bond strength and their interaction with regards to concrete repair work.