EXPERIMENTAL STUDY ON BOND STRENGTH OF ADHESIVE POST-INSTALLED REBAR SYSTEMS DURING FIRE

摘要

The experiments of post-installed adhesive rebar systems were taken in focusing on bond failure during the fire condition. The bond strengths have different performances depending on kinds of injection. Epoxy type decreased to about 1/10 in about 280°C, Urethane type decreased about 1/5 in about 200°C, and Inorganic type reduced about 1/3 in about 270°C. The test results are close to the prediction process for Epoxy while the two other resins fluctuated widely. The heating then loading test can be used as a method for predicting the bond strength of loading then heating test in the range of temperature from 50°C to 100°C.