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Title: Investigation of the curing variables of asphalt-rubber binder

Abstract

Currently, the paving industry utilizes a curing time of 1 hour at 177{degrees}C (350{degrees}F) for producing asphalt-rubber binder. Billiter et al. showed that at these curing conditions, 1 hour at 177{degrees}C (350{degrees}F), adding rubber to asphalt was beneficial, with the rubber improving the low-temperature creep stiffness at (-15{degrees}C (5{degrees}F)), the temperature susceptibility in the 0{degrees}C-90{degrees}C (32{degrees}F-194{degrees}F) temperature region, increasing G* and {eta}* at 60{degrees}C (140{degrees}F) and 1.0 rad/sec, and decreasing 8 at 60{degrees}C (140{degrees}F) and 1.0 rad/sec. On the other hand, Billiter et al. (2) showed that the addition of rubber was also detrimental, in that the viscosity increased significantly in the compaction temperature region of 149{degrees}C-193{degrees}C (300{degrees}F-380{degrees}F). This increased viscosity can cause compaction problems, with Allison reporting that engineers blamed the compaction problems of asphalt-rubber on undissolved crumb rubber, which they believed had no beneficial effect. Additionally, the engineers reported that improper compaction led to early road failure. This work investigates the variables of binders, curing tenperature and time, and amount of mechancial energy on asphalt properties.

Authors:
; ;  [1]
  1. Texas A&M Univ., College Station, TX (United States); and others
Publication Date:
OSTI Identifier:
430339
Report Number(s):
CONF-960807-
Journal ID: ACFPAI; ISSN 0569-3772; TRN: 97:000003-0018
Resource Type:
Journal Article
Journal Name:
Preprints of Papers, American Chemical Society, Division of Fuel Chemistry
Additional Journal Information:
Journal Volume: 41; Journal Issue: 4; Conference: 212. national meeting of the American Chemical Society (ACS), Orlando, FL (United States), 25-30 Aug 1996; Other Information: PBD: 1996
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CURING; TIME DEPENDENCE; ASPHALTS; MECHANICAL PROPERTIES; AIR; CREEP; VISCOSITY; BINDERS

Citation Formats

Billiter, T C, Chun, J S, and Davison, R R. Investigation of the curing variables of asphalt-rubber binder. United States: N. p., 1996. Web.
Billiter, T C, Chun, J S, & Davison, R R. Investigation of the curing variables of asphalt-rubber binder. United States.
Billiter, T C, Chun, J S, and Davison, R R. 1996. "Investigation of the curing variables of asphalt-rubber binder". United States.
@article{osti_430339,
title = {Investigation of the curing variables of asphalt-rubber binder},
author = {Billiter, T C and Chun, J S and Davison, R R},
abstractNote = {Currently, the paving industry utilizes a curing time of 1 hour at 177{degrees}C (350{degrees}F) for producing asphalt-rubber binder. Billiter et al. showed that at these curing conditions, 1 hour at 177{degrees}C (350{degrees}F), adding rubber to asphalt was beneficial, with the rubber improving the low-temperature creep stiffness at (-15{degrees}C (5{degrees}F)), the temperature susceptibility in the 0{degrees}C-90{degrees}C (32{degrees}F-194{degrees}F) temperature region, increasing G* and {eta}* at 60{degrees}C (140{degrees}F) and 1.0 rad/sec, and decreasing 8 at 60{degrees}C (140{degrees}F) and 1.0 rad/sec. On the other hand, Billiter et al. (2) showed that the addition of rubber was also detrimental, in that the viscosity increased significantly in the compaction temperature region of 149{degrees}C-193{degrees}C (300{degrees}F-380{degrees}F). This increased viscosity can cause compaction problems, with Allison reporting that engineers blamed the compaction problems of asphalt-rubber on undissolved crumb rubber, which they believed had no beneficial effect. Additionally, the engineers reported that improper compaction led to early road failure. This work investigates the variables of binders, curing tenperature and time, and amount of mechancial energy on asphalt properties.},
doi = {},
url = {https://www.osti.gov/biblio/430339}, journal = {Preprints of Papers, American Chemical Society, Division of Fuel Chemistry},
number = 4,
volume = 41,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}