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oai:www.ideals.illinois.edu:2142/99096 2023-07-11 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

Al-Qadi, Imad L. Ozer, Hasan Ma, Jing 2018-03-02T19:59:36Z 2018-03-02T19:59:36Z 2020-03-03T10:15:39Z 2017-07-17 2017-08 It is widely accepted that using reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) could improve the sustainability of asphalt concrete (AC), in terms of cost savings and environmental factors. This should be only valid when short- and long-term pavement performance are not compromised. This thesis presents an experimental evaluation of the rheological properties of binders from various sources to investigate the effects of aging and increasing asphalt binder replacement (ABR) levels. In addition to the standard Superpave grading parameters, the additional rheological parameters for low-temperature cracking susceptibility and block and fatigue cracking were derived from various dynamic shear rheometer (DSR) and bending beam rheometer (BBR) tests. Binders from five AC designed with varying ABR percentages (from 0 to 60%) were recovered using the standard Rotovap test procedure. The base binder used in the AC design and binders recovered from RAP and RAS were also tested. In addition to standard aging protocols, base binders were subjected to a second pressure aging vessel (PAV), while one PAV was applied for the extracted binders. Almost all additional rheological parameters appeared to maintain consistent trends with aging and increasing ABR levels. The considered parameters are shown to be helpful in evaluating progression in the brittleness of binders with ABR and aging. Based on the outcome of the experimental program (binder level and mixture level), it was concluded that AC with ABR levels above 20 percent could suffer from short- and long-term cracking potential. Asphalt concrete with high ABR content can already be at a critically-aged condition immediately after production and, as a result, aging progresses much faster in the binders of such mixes. Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-08-01 The student, Jing Ma, accepted the attached license on 2017-07-12 at 14:56. The student, Jing Ma, submitted this Thesis for approval on 2017-07-12 at 14:56. This Thesis was approved for publication on 2017-07-17 at 14:42. DSpace SAF Submission Ingestion Package generated from Vireo submission #11429 on 2018-03-02 at 13:01:46 Made available in DSpace on 2018-03-02T19:59:36Z (GMT). No. of bitstreams: 2 MA-THESIS-2017.pdf: 5080156 bytes, checksum: 04ff1ed5e40a866aa4518975d0912316 (MD5) LICENSE.txt: 4204 bytes, checksum: 6eadb8b055c441885322668773b379f4 (MD5) Previous issue date: 2017-07-17 Embargo set by: Seth Robbins for item 105050 Lift date: 2020-03-02T19:59:52Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system Embargo set by: Seth Robbins for item 105050 Lift date: 2020-03-02T20:02:46Z Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD system U of I Only Restriction Lifted for Item 105050 on 2020-03-03T10:15:39Z. application/pdf http://hdl.handle.net/2142/99096 en Copyright 2017 Jing Ma Asphalt binder replacement (ABR) Dynamic shear rheometer (DSR) Bending beam rheometer (BBR) Reclaimed asphalt pavement (RAP) Recycled asphalt shingles (RAS) Cracking potential of short- and long-term aged binder with various levels of ABR text text Civil & Environmental Engineering Civil Engineering University of Illinois at Urbana-Champaign Thesis M.S.