کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
258718 503622 2012 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Laboratory investigation of compaction characteristics and performance of warm mix asphalt containing chemical additives
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Laboratory investigation of compaction characteristics and performance of warm mix asphalt containing chemical additives
چکیده انگلیسی

This paper focuses on the compaction characteristics and performance of warm mix asphalt containing chemical additive. Viscosity tests indicated the used chemical additive had a limited effect on viscosity reduction. Investigation into the ease of compaction showed that asphalt mixtures containing 2% chemical additive allowed compacting at lower temperatures and mixture compactability was less dependent on bitumen viscosity. It was demonstrated that the compactability of warm mix asphalt could be well ranked by using various indicators including the number of gyrations to achieve a design void content, the slope of accumulated compaction energy against the number of gyrations as well as compaction energy indices at various compaction phases. Data obtained from immersion wheel tracking tests indicated that warm mix asphalt containing chemical additive did not have a performance comparable to that of hot mix asphalt. Rutting and stripping were found to be the main causes resulting in poor performance.


► Warm mix asphalt containing chemical additives.
► Chemical additive had a limited effect on bitumen viscosity reduction.
► 2% Chemical additive improved the ease of compaction.
► Mixture compactability was less dependent on bitumen viscosity.
► Rutting and stripping were the main causes resulting in poor performance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 37, December 2012, Pages 239–247
نویسندگان
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