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

Project Details
STATE

US

SOURCE

RIP

START DATE

09/01/14

END DATE

08/15/15

RESEARCHERS

RE-CAST UTC

SPONSORS

US DOT

KEYWORDS

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

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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