Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2020-2021).

Lightweight Cellular Concrete (LCC) offers potential structural, functional, construction, performance and costx000D
benefits if used correctly in a pavement structure. As an alternative roadbed support over weak soils, LCC hasx000D
been installed as pavement base material to provide a more stable and stronger foundation. It has been placedx000D
in a few pavement sections across Canada and preliminary information shows it can improve pavementx000D
performance.x000D
However there is a lack of engineering data which quantifies the performance of this layer within the pavementx000D
structure. It is also unclear how it performs over time. This proposal is directed at quantifying performancex000D
through an integrated field and laboratory evaluation where the LCC is evaluated. There is a need tox000D
investigate and quantify the technical benefits, strength, stiffness, and vibrations of the LCC under cyclic trafficx000D
loading. In order to optimize the use of LCC as base material in pavement engineering, the Centre forx000D
Pavement and Transportation Technology (CPATT) at the University of Waterloo and the CEMATRIXx000D
(Canada) Inc. are collaborating to investigate the pavement structural benefits with the use of CEMATRIXx000D
LCC.x000D
The following major tasks will be part of this research program: build a full scale instrumented pavementx000D
section with the use of various LCCs as base layers, instrument and evaluate thermal performance duringx000D
winter conditions, and instrument and quantify potential benefits of dampening vibrations. In addition, thex000D
research will develop a pavement structure number and potential pavement layer thickness savings that can bex000D
achieved by using LCC. A finite element model will be built to simulate and predict the bearing capacities ofx000D
pavements with various thickness of LCC at various locations (depth) to the base, and finally guidelines forx000D
LCC pavement and provide typical pavement designs with LCC for the usage in Canada. The designs willx000D
account for varying traffic loading and environmental conditions.