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Microstructural changes in concretes with sulfate exposure |
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| Authors: | Paul Brown R D Hooton Boyd Clark |
| Affiliation: | a Department of Materials Science and Engineering, The Pennsylvania State University, University Park, PA 16802, USA b Department of Civil Engineering, The University of Toronto, Toronto, Canada c The RJLee Group, 350 Hochburg Road, Monroeville, PA, USA |
| Abstract: | In prior papers the responses of concretes to 50,000 ppm MgSO4 exposure depending on cement type, w/cm and the presence of slag were described. The present paper completes this analysis by examining the effects of immersion of concretes produced using slag blended cements, in solutions containing 50,000 ppm of sodium sulfate. The spatial evolution of microstructure associated with carbonation and sulfate attack show differences which can be related to the nature of the cation associated with the sulfate, the cement type, and the w/cm ratio. |
| Keywords: | Ettringite Thaumasite Cement type w/cm Ratio |
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