Estimation of Specific Gravity with Penetration and Penetration Index Parameters by Artificial Neural Network

Specific Gravity of the bitumen changes according to the ambienttemperature. Different specific gravity values can be calculated at differenttemperature. Estimating models like Artificial Neural Network – ANN couldbe very useful to obtain the specific gravity value uniform. Specific gravityvalues obtained from Long-Term Pavement Performance – LTPP wereestimated with artificial neural networks. Penetration and Penetration Index ofbinder were used for estimating the specific gravity of the bitumen. As aresult, ANN get 84% of R2 between obtained and estimated values.