کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6715425 | 1428740 | 2018 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Laboratory investigation of RAP aggregates for dry lean concrete mixes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی عمران و سازه
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چکیده انگلیسی
In the present study, the suitability of coarse (C) and fine (F) RAP aggregates extracted from two flexible pavements (OLD (O) & NEW (N)) having different service (20â¯yrs. & 2½â¯yrs.) and stockpiling life (8â¯months & 0â¯months) for productions of Dry Lean Concrete (DLC) and bituminous mixtures is assessed. For the same, a total of 15â¯DLC mixes were cast, consisting of 9 mixes containing different proportions (25-100%) of CO and CN aggregates and 6 mixes containing FO (25-100%) and FN aggregates (25% and 50%). The effect of both fractions of RAP on optimum moisture content (OMC), maximum dry density (MDD), compressive strength, water absorption and permeable voids were studied. Volumetric properties of compacted bituminous mixes containing aggregates milled from new pavement were also investigated. It was found that aggregates obtained from old pavement have the potential to replace 75% coarse and 50% fine natural aggregates whereas 25% CN and zero FN aggregates may be utilized for DLC mixes. Contrary, aggregates obtained from new pavement were found to be suitable for construction of base and wearing course of flexible pavements whereas aggregates from older pavement could not be even molded while preparing test sample due to loss of binding properties of asphalt mixtures by virtue of oxidation process.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Construction and Building Materials - Volume 166, 30 March 2018, Pages 808-816
Journal: Construction and Building Materials - Volume 166, 30 March 2018, Pages 808-816
نویسندگان
Surender Singh, G.D.R.N. Ransinchung, Kumari Monu, Praveen Kumar,