Novel hybrid radial based neural network model on predicting the compressive strength of long-term HPC concrete

Document Type : Original Article

Authors

1 Faculty of Contemporary Sciences and Technologies, South East European University, Ilindenska 335, 1200 Tetovo, Macedonia

2 COSL-EXPRO Testing Services (Tianjin) Co., Ltd., Tianjin 300457, China

3 College of Arts and Sciences, University of New England, Armidale, NSW 2351, Australia

4 Central Arizona College, Coolidge 85128, AZ, United States

Abstract

The additives’ usage like micro-silica (MS) and fly ash (FA) through partial substitution of cohesive materials in concrete design has positive impacts on the concrete’s mechanical properties, reducing concrete production cost and declining environmental pollution. The concrete’s compressive strength is the main factor considered in the mechanical properties of the concrete, which is estimated by experimental efforts or non-destructive models as developed artificial models. In the present work, two hybrid radial base neural networks (RBFN) coupled with arithmetic optimization algorithm (AORBFN) and antlion optimization algorithm (ALRBFN) were developed for the prediction of compressive strength. The models' variables contain the binder, fly ash, micro-silica, superplasticizer, coarse aggregate, water, and the target's curing time as input and compressive strength. The results showed that both models have the capability of delivering a precise compressive strength prediction. The best R2 value for the AORBF is 0.9706 in the test phase, and the best obtained R2 for the ALRBF model is 0.9669, which is achieved in the same phase. The results conclude that the AORBF model can be preferred as an applicable model for compressive strength prediction.

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