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Title: Modeling of Parameters Affecting Physical Salt Attack of Concrete

Author(s): M. R. Sakr and M. T. Bassuoni

Publication: Materials Journal

Volume: 118

Issue: 2

Appears on pages(s): 173-188

Keywords: mechanical capacity; physical salt attack; statistical modeling; supplementary cementitious materials; wicking factor

Date: 3/1/2021

The response surface method, a statistical modeling approach, was used to assess the influence of water-binder ratio (w/b), binder content, and dosages of supplementary cementitious materials on the performance of 52 mixtures under accelerated physical salt attack (PSA). The test protocol simulated partially embedded elements. Also, the PSA damage of concrete was mapped by regression analysis based on combination of performance-based parameters. Mineralogical, thermal, and microstructural analyses were conducted to elucidate the bulk trends obtained from the models. Multi-objective optimization was also performed to determine optimal combinations of parameters (w/b; binder content; and dosages of fly ash, slag, and silica fume) producing mixtures resistant to PSA. In addition, a classification for the resistance of concrete to PSA based on performance indicators (mechanical capacity and wicking factor) was proposed.


Electronic Materials Journal


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