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Rapid Pavement Construction: Research on Thixotropy and Workability Loss of Vibration-Free Concrete in View of Accelerating Pavement Construction by Slipforming

Project Details
STATE

FHWA

SOURCE

TRID

START DATE

09/01/14

END DATE

12/31/15

RESEARCHERS

RE-CAST UTC

SPONSORS

US Department of Transportation

KEYWORDS

Cement paste, Mix design, Road construction, Slip form paving, Thixotropy, Workability

LINKS

Project Webpage

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Project description

The main objective of this project is to identify critical constituent materials and mix design parameters that influence the thixotropy and workability loss of vibration-free concrete. The research will be mainly performed on cement-pastes, which is the source of thixotropy and workability loss. The influence of the aggregates will be investigated in a separate task. Understanding the time-dependent fresh concrete behavior is essential for the development of vibration-free concrete for slipforming, enhancing the opportunities for accelerated pavement construction. Furthermore, the obtained results can be related to other Research on Concrete Applications for Sustainable Transportation (RE-CAST) projects, such as project 1B on formwork pressure and 1C on the influence of casting procedures on the performance of concrete.
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