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Chemistry and Performance of Supplementary Cementitious Materials (SCMs) for Wisconsin Concrete Pavement

Project Details
STATE

WI

SOURCE

WisDOT

START DATE

10/01/22

END DATE

01/20/25

RESEARCHERS

Jussara Tanesi

SPONSORS

Wisconsin Department of Transportation

KEYWORDS

alternative, Cement, cementitious, Chemistry, Concrete, Fly ash, Performance, reactivity, resistivity, Shrinkage, Slag, Strength, Strength activity index, supplementary

LINKS

Product

Project description

An extensive testing program, including materials characterization and concrete performance evaluation, was performed. Performance included materials characterization and concrete performance. A total of ten materials were studied. Characterization included chemical composition, XRD, density, setting time, water requirement, particle size, a modified version of the strength activity index, a modified version of the foam index, and reactivity. The performance of concretes containing these SCM and ASCM, as well as a concrete containing a combination of liquid SCM was evaluated and compared to a control mixture. Among the properties were box test, compressive and flexural strength, shrinkage, electrical resistivity, and freeze-thaw resistance. Based on the results of this study, several recommendations were provided, including the implementation of the modified SAI, the use of reactivity tests to screen new materials, the increase of the maximum SAM number, and the increase of the maximum LOI to match ASTM C618.
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