High-temperature compressive strength of steel fiber high-strength concrete

Experimental results are reported on the compressive strength of steel fibe r high-strength concrete (SFHSC) subjected to high temperatures. The concre te specimens were preheated to different temperature levels, and the existe nce of a cooling phase was also considered as a variable. During the heatin g phase the compressive strength of the SFHSC was shown to be more affected by high temperatures than normal-strength concrete without fibers. In gene ral, a gain was registered in the compressive strength of the specimens aft er cooling.