%0 Journal Article
%T Water Absorption Study Recycled Aggregates for Use Pavement Material
%A Vahid Ayan
%A Joshua R. Omer
%A Seyed Masoud Nasr Azadani
%A Mukesh C. Limbachiya
%A Alireza Khavandi
%J Open Access Library Journal
%V 1
%N 6
%P 1-10
%@ 2333-9721
%D 2014
%I Open Access Library
%R 10.4236/oalib.1100605
%X Water absorption properties of recycled materials
play an important role in pavement performance. The performance of aggregates
changes after absorbing water, then it affects highways layers such as base,
subbase, capping. This is why these materials must comply requirements of codes
and standards. With regard to the increasing trend of application of recycled
aggregates in highways layers, this issue needs more investigation. This
research is only a part of our large research
programme on three different purposed mixes of unbound subbase mixture below:
1) 100% Recycled Concrete Aggregate (RCA); 2) 100% Lime Stone (NA); 3) 50%
RCA   50% Reclaimed Asphalt Pavement (RAP). Water absorption for each mix has
been performed in different size fraction with pyknometer and wire basket
methods. The relationship between density, grading and water absorption and its
comparison for mixes would be indicating the changes in behaviour of aggregates
and future performance of subbase. Laboratory testing showed that 100% Lime
Stone had the higher densities than other mixes and water absorption value of
100% RCA was about 40% higher than 50% RCA   50% RAP in 31.5 mm - 4 mm
fraction.
%K Water Absorption
%K Recycled Aggregate
%K Reclaimed Asphalt Pavement
%K Density
%K Subbase
%U http://www.oalib.com/paper/3065207