Application of Pulloff Test to Assess the Durability of Bond Between New and Old Concrete Subjected to Deicer Salts
Shigen (Eric) Li, Gregory C. Frantz,
and Jack E. Stephens
Appears on pages(s):
bond (concrete to concrete); deicers; durability; freeze thaw durability;
patching; pavements; pullout tests; scaling
A test method, which uses pull-off test and partial coring techniques, was developed in this study. This test method is particularly suitable for assessing the durability of bonding new to old concrete subjected to freeze-thaw cycling and exposed to deicing salt. This test method also combines bond evaluation and ASTM C-672 test ( Standard Test Method for Scaling Resistance of Concrete Surfaces Exposed to Deicing Chemicals ) into one test method. Laboratory experimental research investigated important factors which influence the test results and their scatter. Test results show that this test method is very promising.