Sulfate deterioration of cement-based materials examined by x-ray microtomography

Nikhila N. Naik; Kimberly E. Kurtis; Angus P. Wilkinson; Andrew C. Jupe; Stuart R. Stock

doi:10.1117/12.560429

26 October 2004 Sulfate deterioration of cement-based materials examined by x-ray microtomography

Nikhila N. Naik, Kimberly E. Kurtis, Angus P. Wilkinson, Andrew C. Jupe, Stuart R. Stock

Proceedings Volume 5535, Developments in X-Ray Tomography IV; (2004) https://doi.org/10.1117/12.560429
Event: Optical Science and Technology, the SPIE 49th Annual Meeting, 2004, Denver, Colorado, United States

Abstract

Sulfate ions present in soil, groundwater, seawater, decaying organic matter, acid rain, and industrial effluent adversely affect the long-term durability of portland cement concrete, but lack of complete understanding of the nature and consequences of sulfate attack hamper our ability to accurately predict performance of concrete in sulfate-rich environments. One impediment to improved understanding of sulfate deterioration of cement-based materials has been the lack of appropriate non-destructive characterization techniques. Laboratory x-ray microtomography affords an opportunity to study in situ the evolution of physical manifestations of damage due to sulfate exposure. The influence of materials selection and mixture parameters -- including water-to-cement ratio, cement type, and presence or absence of aggregate, as well as the influence of sulfate exposure conditions, including sulfate and cation type (i.e., Na₂SO₄ and MgSO₄) and concentration -- have been examined by microtomography to determine their influence on the rate and character of the sulfate-induced deterioration.

Citation Download Citation

Nikhila N. Naik, Kimberly E. Kurtis, Angus P. Wilkinson, Andrew C. Jupe, and Stuart R. Stock "Sulfate deterioration of cement-based materials examined by x-ray microtomography", Proc. SPIE 5535, Developments in X-Ray Tomography IV, (26 October 2004); https://doi.org/10.1117/12.560429

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