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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/4761
Title: Laboratory investigation of RAP aggregates for dry lean concrete mixes
Authors: Singh S.
Ransinchung G.D.R.N.
Monu K.
Kumar P.
Published in: Construction and Building Materials
Abstract: 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 (20 yrs. & 2½ yrs.) and stockpiling life (8 months & 0 months) for productions of Dry Lean Concrete (DLC) and bituminous mixtures is assessed. For the same, a total of 15 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. © 2018 Elsevier Ltd
Citation: Construction and Building Materials(2018), 166(): 808-816
URI: https://doi.org/10.1016/j.conbuildmat.2018.01.131
http://repository.iitr.ac.in/handle/123456789/4761
Issue Date: 2018
Publisher: Elsevier Ltd
Keywords: Bituminous
Concrete
DLC
Oxidation
RAP
Strength
ISSN: 9500618
Author Scopus IDs: 57194233849
24483987700
57204176746
55466569500
Author Affiliations: Singh, S., Department of Civil Engineering, Indian Institute of Technology Roorkee247667, India
Ransinchung, G.D.R.N., Department of Civil Engineering, Indian Institute of Technology Roorkee247667, India
Monu, K., Department of Civil Engineering, Indian Institute of Technology Roorkee247667, India
Kumar, P., Department of Civil Engineering, Indian Institute of Technology Roorkee247667, India
Corresponding Author: Singh, S.; Department of Civil Engineering, Indian Institute of Technology RoorkeeIndia; email: surendr.singh38@gmail.com
Appears in Collections:Journal Publications [CE]

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