EVALUATION OF CONCRETE EXPOSED TO FIRE UNDER AXIAL COMPRESSION LOAD USING THE FIRE TEST FACILITY “FTF

للكاتب

R.M. Abd El-Naby

Shoubra Faculty of Engineering, Benha Branch,

ABSTRACT:

Statistical studies implemented worldwide deduced that exposing concrete structures to fire is

still a challenging problem from the structural and economical points of views. Researchers

attributed this to the complex nature of the concrete structure in the field and the inexistence of

a reliable test facility that can predict the actual behavior of the concrete elements if they are

exposed to fire while they are subjected to external loading conditions. The analytical and

experimental work carried out concluded that using the finite element analysis (FEA) proved to

be a reliable analytical technique to predict the actual behavior of concrete exposed to high-rise

temperature, if an accurate characterization of the concrete material is provided as input data to

the software (SAP 2000).

This research provided the fire test facility (FTF) as an attempt to examine a concrete specimenexposed fire while subjected to compressive load. The fire test facility (FTF) proved to be a

reliable experimental technique to model the actual behavior of concrete specimen exposed to

fire and compressive load. Relating the microstructure characteristics of the X-ray diffraction

to the compressive strength of the concrete provided an explanation to the behavior of the

dolomite powder, either at the room temperature or at high-rise temperature. However, this

relation concluded the need of extending this experimental work to comprise different types of

powder to examine the susceptibility to the pozzolanic reaction.

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