TY - JOUR
TI - New model for compressive strength loss of lightweight concrete exposed to elevated temperatures
AU - Kurtoğlu Ahmet Emin
AU - Bakbak Derya
JN - Thermal Science
PY - 2019
VL - 23
IS - 11
SP - 285
EP - 293
PT - Article
AB - This study proposes a new model for the residual compressive strength of  structural lightweight concrete after exposure to elevated temperatures up  to 1000 °C. For this purpose, a database of residual compressive strengths  of fire exposed lightweight concrete was compiled from the literature.  Database consisted a total number of 289 data points, used for generating  training and testing datasets. Symbolic regression was carried out to  generate formulations by accounting for various input parameters such as  heating rate, cooling regime, target temperature, water content, aggregate  tyğe and aggregate content. Afterwards, predictions of proposed formulation  is compared to experimental results. Statistical evaluations verify that the  prediction performance of proposed model is quite high.