Prediction of failure of a cantilever–wall connection using post-installed rebars under thermal loading

摘要: Abstract Polymer based mortars allow post-installing rebars into pre-existing concrete structures by bonding the steel to in a few hours. This type of steel–polymer–concrete bond may show similar performances classic rebar–concrete connections at ambient temperature but, due adhesive layer, it tends lose rapidly its load bearing capacity higher temperatures which raises issue fire safety for these types structural connections. paper presents simple model estimating time before collapse structure subjected according ISO 834-1 heating. Entry data ultimate calculation is obtained through pull-out tests performed different on small size samples made out cylinders order obtain an stress–temperature relationship. Model predictions are then compared from full scale test wall–cantilever connection using post-installed rebars. The thermally loaded gas furnace up cantilever slip chemically bonded rebar. Temperature and displacement measurements during analyzed evaluate accuracy this method safely stress distribution along just failure.