Ground Tire Rubber (GTR) as a Component Material in Concrete Mixtures for Paving Concrete

Project Details
STATE

FL

SOURCE

RIP

START DATE

06/01/12

END DATE

12/15/18

RESEARCHERS

Florida State University

SPONSORS

FDOT

KEYWORDS

Admixtures, Air content, cement, grain size, Ground tires, paving coarse aggregates, Water cement ratio

Project description

The objectives of this research are to: (1) identify the particle size or gradation of the ground tire rubber for payment concrete. (2) Indicate the percentage of ground tire rubber to replace the fine and/or coarse aggregate fraction. (3) Determine the methodology to introduce the material in the mixture. When is it added? With coarse aggregate, with cement, etc? (4) Indicate any adjustments that may need to be made to the mixture based on w/cm ratio or air content. (5) Identify a moisture content for the ground tire rubber. (6) Recommend how the ground tire rubber will be stored at a concrete plant. (7) Recommendations for adding ground tire rubber to a ready mix truck mixer. (8) Indicate strength and coefficient of thermal expansion variations based on current pavement mixes and mixes using the ground tire rubber.RFRP #11/12-018 Award
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