This collection contains 10 papers that were presented at sessions sponsored by Joint ACI-TMS Committee 216 at the ACI Fall 2008 Convention held in St. Louis, MO, and the ACI 2010 Spring Convention in Chicago, IL. The papers present some of the latest research findings on the fire performance of concrete. They provide research results from both experimental and numerical studies on various aspects, ranging from high temperature material properties to advanced computer models for tracing the fire response of reinforced concrete structural members.