Evaluation of artificial intelligence methods based on metaheuristic algorithms for estimating the compressive strength of lightweight structural concrete containing leca

Document Type : Original Article

Authors

1 M.Sc, Tabari university, Babol, Iran

2 Pardisan university, Fereidoon kenar, Iran

3 M.Sc student, Pardisan university, Freidoonkenar, iran

4 phd candidate, Babol Nooshirvani University

Abstract

Compressive strength (CS) is an important mechanical characteristic of concrete, which is highly perceptible from concrete mix design. The main objective of this study is investigate metaheuristic algorithms, combined with artificial intelligence methods (hybrid models), so as to provide relationships to estimate compressive strength of lightweight expanded clay aggregate (LECA) concrete, by comparing other Artificial inteligence models (AI models), assessing effective parameters and model accuracy and finally i validatt the result of the developed models. In this study, 405 laboratory samples in their 7, 28 and 90 days old age were used. Presented models in this study were expanded using artificial neural network (ANN), multivariate adaptive regression splines (MARS) and improved MARS with crow search algorithm (MARS-CSA). Statistical indicator named R, RMSE and MAE investigated results of the developed models. In testing performance, predicted compressive strength values of MARS-CSA (R= 0.913, RMSE= 39.002) indicated significant accuracy in comparison with MARS and ANN models.

Keywords


Volume 22, Issue 58
Spring 2020
May 2020
Pages 19-34
  • Receive Date: 07 September 2018
  • Revise Date: 05 August 2019
  • Accept Date: 13 February 2021