Disposed waste materials remained from demolished buildings have been an
environmental problem especially for developing countries. Recycled Cement
Concrete (RCC) is one of the abundant components of waste materials that
include quality aggregates. Use of RCC in asphalt concrete pavements is
economically a feasible option as it not only helps in recycling waste materials but
also preserves natural resources by fulfilling the demand for quality aggregate in
pavement constructions. However, due to variability in RCC characteristics, a
detailed evaluation of its effect on asphalt concrete performance is required.
In this study, effect of RCC content on rutting potential of asphalt concrete is
investigated using laboratory prepared specimens. Rutting susceptibility of the
specimens is determined using repeated creep tests performed in the uniaxial
stress mode. Because of the aspect ratio requirements for the repeated creep test,
the standard Marshall mix design procedures were modified based on the energy
concept by changing the compactor device and the applied design number of
blows. The modified specimens were tested to determine a number of parameters
that can describe the rutting behavior of the tested mixes. The findings indicate
that slope constant and flow number give relatively stronger relationships with
rutting behavior as compared to the other rutting parameters. While increasing the RCC content yields improved rutting performance for coarse graded specimens, it
dramatically reduces the performance for fine graded specimens.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12609765/index.pdf |
| Date | 01 August 2008 |
| Creators | Gul, Waqar Ahmed Waqar |
| Contributors | Gul, Waqar Ahmed Waqar |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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