Fire resistance of binding prestressed concrete slab with unbonded reinforcemen
DOI:
https://doi.org/10.33408/2519-237X.2018.2-2.161Keywords:
fire resistance limits, temperature regime, brittle failure, protective layer, humidityAbstract
Purpose. The article is dedicated to features of determination of the fire resistance of prestressed concrete slab with unbonded reinforcement.
Methods. The fire test of concrete slabs with unbonded reinforcement on the fire resistance. Computer modelling of concrete slabs with unbonded reinforcement on the fire resistance.
Findings. The fire resistance limit of prestressed concrete slab with unbonded reinforcement and critical temperature for reinforcement have been determined. The calculation of fire resistance of concrete slab with unbonded reinforcement is fulfilled in ANSYS.
Application field of research. The obtained study data could be used in calculation and design of prestressed concrete slab with unbonded reinforcement.
Conclusions. In the article we constructed the model of reinforced concrete slabs with unbonded reinforcement. The behavior of the model under standard fire exposure is studied. The fire resistance limit of prestressed concrete slab with unbonded reinforcement and critical temperature for reinforcement are determined. Inverse calculation of determination of fire resistance defined the critical temperature for reinforcement. The fire resistance of the model is estimated. The simulation results are compared with the experimental data.
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