Given the potential benefits of HSC and its increased usage, questions about its fire performance need
to be resolved. Also, the applicability of existing fire-design provisions, which were developed mostly from
the results of fire tests on NSC, to HSC needs to be evaluated. To address these issues, a workshop, entitled
International Workshop on Fire Performance of HSC, was convened by the Buidling and Fire Research
Laboratory at NIST (Gaithersburg, Maryland, U.S.A.) in February, 1997 (8). The participants included
international and U.S. experts who have been involved with experimental or analytical studies of fireexposed
concrete. The workshop reviewed the current state of knowledge and recommended research to
fill knowledge gaps. The workshop participants were divided into four working groups: (1) Material tests
group, to identify research needs concerning material properties of HSC at elevated temperature; (2)
Element tests group, to identify research needs concerning fire testing of HSC structural elements; (3)
Analytical studies group, to identify research needs concerning modeling aspects of fire-exposed HSC; and
(4) Code and Standards group, to identify research needs for making current code provisions, fire design
procedure, and testing standards applicable to HSC.