Abstract
The policy of driving organization such as Highways Agency is towards the use of performance related
specifications. This policy and adoption of European wide aggregate standards on the one hand, and
sustainable construction pressures on the other, all strongly emphasize on further need for more
developments to specifications and performance assessment methodologies instead of creating barriers to the
use of suitable materials. Performance related specifications for pavement foundations are being developed
and are primarily based around in-situ control and compliance testing. Laboratory based tools for assessment
of the performance of foundation materials and their durability under adverse conditions would be a key
factor to the successful use of alternative materials.
The toughness performance of recycled concrete aggregates (RCA) mixed with natural aggregates (NA)
was evaluated based on the test specifications given in the NCHRP Report 598. For this purpose Los
Angeles Abrasion and degradation test results were correlated with established Micro-Deval designations in
NCHRP report 598.Three main factors involved in performance assessment; i.e. (a) traffic loading, (b)
moisture levels in highway pavements and (c) the temperature conditions. The research study showed that
the materials were appropriate for unbound subbase for medium traffic in non freezing condition from the
standpoint of toughness. Also they are suitable for low traffic situations with low moisture and freezing
weather.
| Original language | English |
|---|---|
| Pages (from-to) | 171-180 |
| Journal | International Journal of Transportation Engineering |
| Volume | 3 |
| Issue number | 3 |
| Publication status | Published - 2016 |
Keywords
- General engineering and mineral and mining engineering