Journal
MATERIALS
Volume 14, Issue 17, Pages -Publisher
MDPI
DOI: 10.3390/ma14174885
Keywords
artificial intelligence; metaheuristic algorithm; superplasticizer demand; self-consolidating concrete
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This study utilized ANFIS combined with metaheuristic algorithms to evaluate the impact of different non-destructive testing methods on the demand for superplasticizers in SCC. The results showed that hybrid algorithms (ANFIS-PSO, ANFIS-DEO, and ANFIS-ACO) can serve as reliable prediction methods and alternatives to experimental techniques.
This paper numerically investigates the required superplasticizer (SP) demand for self-consolidating concrete (SCC) as a valuable information source to obtain a durable SCC. In this regard, an adaptive neuro-fuzzy inference system (ANFIS) is integrated with three metaheuristic algorithms to evaluate a dataset from non-destructive tests. Hence, five different non-destructive testing methods, including J-ring test, V-funnel test, U-box test, 3 min slump value and 50 min slump (T50) value were performed. Then, three metaheuristic algorithms, namely particle swarm optimization (PSO), ant colony optimization (ACO) and differential evolution optimization (DEO), were considered to predict the SP demand of SCC mixtures. To compare the optimization algorithms, ANFIS parameters were kept constant (clusters = 10, train samples = 70% and test samples = 30%). The metaheuristic parameters were adjusted, and each algorithm was tuned to attain the best performance. In general, it was found that the ANFIS method is a good base to be combined with other optimization algorithms. The results indicated that hybrid algorithms (ANFIS-PSO, ANFIS-DEO and ANFIS-ACO) can be used as reliable prediction methods and considered as an alternative for experimental techniques. In order to perform a reliable analogy of the developed algorithms, three evaluation criteria were employed, including root mean square error (RMSE), Pearson correlation coefficient (r) and determination regression coefficient (R-2). As a result, the ANFIS-PSO algorithm represented the most accurate prediction of SP demand with RMSE = 0.0633, r = 0.9387 and R-2 = 0.9871 in the testing phase.
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