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Title: Application of Pulloff Test to Assess the Durability of Bond Between New and Old Concrete Subjected to Deicer Salts

Author(s): Shigen (Eric) Li, Gregory C. Frantz, and Jack E. Stephens

Publication: Symposium Paper

Volume: 168


Appears on pages(s): 267-294

Keywords: bond (concrete to concrete); deicers; durability; freeze thaw durability; patching; pavements; pullout tests; scaling

DOI: 10.14359/5944

Date: 4/1/1997

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.


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