New Model for Compressive Strength Loss of Lightweight Concrete Exposed to Elevated Temperatures

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Tarih

2019

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

VINCA INST NUCLEAR SCI, MIHAJLA PETROVICA-ALASA 12-14 VINCA, 11037 BELGRADE. POB 522, BELGRADE, 11001, SERBIA

Erişim Hakkı

info:eu-repo/semantics/openAccess
Attribution-NonCommercial-NoDerivs 3.0 United States

Özet

This study proposes a new model for the residual compressive strength of structural lightweight concrete after exposure to elevated temperatures up to 1000 degrees 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 type, 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.

Açıklama

Anahtar Kelimeler

lightweight concrete, high temperature, compressive strength, symbolic regression, modeling, MECHANICAL PERFORMANCE, SYMBOLIC REGRESSION, SILICA FUME, FIRE, PUMICE, PREDICTION, BEHAVIOR, Thermodynamics

Kaynak

THERMAL SCIENCE

WoS Q Değeri

Q3

Scopus Q Değeri

Q3

Cilt

23

Sayı

Künye