A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Workability and Setting Time for Slipform Paving Concrete Mixtures
A challenge to specifying and producing uniformly high-quality concrete pavements has been a lack of test methods that evaluate the properties of a mixture that impact longevity of the system. This article discusses two test methods being implemented as a result of these efforts -- the vibration Kelly ball (VKelly) test and the ultrasonic pulse velocity (UPV) test. The first test assesses the workability of a fresh, low-slump concrete mixture, in particular its response to vibration, which is the critical measure of workability in the context of slipform paving. The second test uses acoustical methods to predict when sawcutting should be conducted for a given mixture under given weather conditions, potentially saving millions of dollars in random cracking prevention and/or excess overtime for sawing crews waiting for the concrete to harden sufficiently. This article discusses the principles behind each test, the research data collected to validate them, and results from field evaluations.
Workability and Setting Time for Slipform Paving Concrete Mixtures
A challenge to specifying and producing uniformly high-quality concrete pavements has been a lack of test methods that evaluate the properties of a mixture that impact longevity of the system. This article discusses two test methods being implemented as a result of these efforts -- the vibration Kelly ball (VKelly) test and the ultrasonic pulse velocity (UPV) test. The first test assesses the workability of a fresh, low-slump concrete mixture, in particular its response to vibration, which is the critical measure of workability in the context of slipform paving. The second test uses acoustical methods to predict when sawcutting should be conducted for a given mixture under given weather conditions, potentially saving millions of dollars in random cracking prevention and/or excess overtime for sawing crews waiting for the concrete to harden sufficiently. This article discusses the principles behind each test, the research data collected to validate them, and results from field evaluations.
Workability and Setting Time for Slipform Paving Concrete Mixtures
Peter C Taylor (author) / Xuhao Wang
2016
Article (Journal)
English
A novel test to determine the workability of slipform concrete mixtures
| Online Contents | 2017
A novel test to determine the workability of slipform concrete mixtures
| Online Contents | 2017
SLIPFORM PAVING MACHINE AND METHOD OF OPERATING A SLIPFORM PAVING MACHINE
| European Patent Office | 2018