Comparison of Pull-Out Strength Behavior for Chemical Adhesive Anchors Installed in Concrete
Keywords:Adhesive, INDEX, fischer, Retrofits, Pre-drilled etc
Post installed reinforcement is widely used in the world as well as Bangladesh because of the need for it in rehabilitation and strengthening work. It help to contribute at the efficiency in the cost of construction in general and offer a level of confidence on the structural integrity of building and civil engineering infrastructural projects. Engineers need to be confident in the performance of adhesives anchor systems to be used where adhesives involved as a bonding agent between steel reinforcement bars and concrete. This research is investigated the effectiveness of several sorts of adhesives utilized in post-installed rebar connection under pull-out test. The cylindrical samples (36 + 12 Nos) of 15cm diameter 30 cm height with two different proportion ratio of ingredients for preparing concrete where brick chips as coarse aggregates with two different anchors grade (400W &500W) are used. The control samples (12 Nos) are the cast in-place rebar concrete specimens while other samples (36 Nos) are post rebar-installed concrete specimens where chemical adhesives like fischer, INDEX and mortar are used as bonding agents. The findings show that the pull-out load values are higher for lower reinforcement grade and lower amount of aggregates in concrete by applying chemical adhesive.
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