Development of SHRP binder specification

Development of SHRP binder specification

David A. Anderson, T W Kennedy

01 Jan 1993-Vol. 62, pp 481-507

About: The article was published on 1993-01-01 and is currently open access. It has received 191 citations till now.

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Journal Article•DOI•

Testing and Appraisal of Polymer Modified Road Bitumens-State of the Art

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Ulf Isacsson¹, Xiaohu Lu¹•Institutions (1)

Royal Institute of Technology¹

01 Apr 1995-Materials and Structures

TL;DR: In this paper, the state of the art in test methods for polymer modified bitumens is presented, and a general description of each non-standardized test procedure is given.

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Abstract: Polymer of road applications and their effects of functional properties (permanent deformation, fatigue cracking, low temperature cracking, stripping, wear resistance and ageing) of asphalt pavements are described. The state of the art in test methods for polymer modified bitumens is presented. The methods are classified as standardized or non-standardized. A general description of each non-standardized test procedure is given. Current or proposed specification models for polymer modified bitumens are summarized. The present situation regarding test methods and specifications of polymer modified bitumens and the need for further development are discussed.

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304 citations

Journal Article•DOI•

Rheological characterization of styrene-butadiene-styrene copolymer modified bitumens

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Xiaochun Lu¹, Ulf Isacsson¹•Institutions (1)

Royal Institute of Technology¹

01 Feb 1997-Construction and Building Materials

TL;DR: In this article, the rheological properties of styrene-butadiene-styrene copolymer (SBS) modified bitumens were studied using dynamic mechanical analysis over wide ranges of temperatures and frequencies.

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249 citations

Development of a New Method for Assessing Asphalt Binder Durability with Field Validation

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C. J. Glover, Richard R. Davison, Chris H. Domke, Yonghong Ruan, Pramitha Juristyarini, Daniel B. Knorr, Sung H Jung - Show less +3 more

01 Aug 2005

TL;DR: In this paper, a new dynamic shear rheometer (DSR) function, G'/(eta'/G'), and a new aging procedure should warn of premature asphalt hardening and resulting fatigue cracking.

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Abstract: This project was a comprehensive study directed at developing an improved method of screening asphalt binders for long-term pavement performance. A new dynamic shear rheometer (DSR) function, G'/(eta'/G'), and a new aging procedure should warn of premature asphalt hardening and resulting fatigue cracking. For unmodified asphalts the new DSR function correlated well with ductility (at 15 deg C, 1 cm/min) below 10 cm. The correlation was originally developed for DSR measurements at 15 deg C and 0.005 rad/s. These conditions were time-temperature superposition shifted to 44.7 deg C and 10 rad/s to produce a method that is easily accessible to standard laboratory rheological equipment and methods. The recommended aging procedure uses the pressure aging vessel (PAV) apparatus but takes advantage of the higher average aging rate when the asphalt is aged in thinner films. This change, combined with somewhat longer aging, results in a more rigorous test of durability than the standard PAV method. At the same time, the resulting rankings of aged materials are more representative of rankings that are obtained from aging at atmospheric air pressure and 60 deg C. For modified asphalts, the results were complex. Generally for a given value of the DSR function, the ductility was better than indicated by the unmodified asphalt DSR-ductility correlation. Larger amounts of modifier produced increasing values of ductility for a given function value. This result was very asphalt dependent, however, so no general correlation could be found. As modified binders oxidize, the asphalt hardens and the improvement to ductility imparted by modifiers decreases. After enough aging, the improvement is gone and modified binders perform no better than their aged unmodified counterpart. A critical issue is whether the life extension produced by modifiers is life-cycle cost effective. Long-Term Pavement Performance (LTPP) and SH 21 binders indicate: sealcoats may provide an opportunity for significant and very cost-effective in-place binder rejuvenation; G'/(eta'/G') is an excellent function for tracking pavement aging; pavements can oxidize rather uniformly with depth; brittle binders can be tolerated in stiff pavements; aggregates appear to have little effect on asphalt oxidation reactions; rolling thin-film oven tests plus PAV aging is not severe aging, in the context of pavement life.

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180 citations

Cites background or methods from "Development of SHRP binder specific..."

...The tenderness and permanent deformation tests which are based on the G*/sin δ parameter measured at the maximum pavement temperature have been related to laboratory rutting tests conducted on compacted mixes (Anderson and Kennedy, 1993)....
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..., a measurement made at a 10 C above the specified pavement temperature after 60 s loading is equivalent to one made at the actual pavement temperature and after 2 hours loading) (Anderson and Kennedy, 1993)....
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...Fatigue cracking is evaluated in the Superpave system from measurements of G*sin δ (=GO), which is a measure of energy dissipation, along with the low-temperature value of the slope of the log creep stiffness versus log time curve, m (Anderson and Kennedy, 1993)....
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...Fatigue cracking is evaluated in the Superpave system from measurements of Gsin δ (=GO), which is a measure of energy dissipation, along with the low-temperature value of the slope of the log creep stiffness versus log time curve, m (Anderson and Kennedy, 1993)....
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...The tenderness and permanent deformation tests which are based on the G/sin δ parameter measured at the maximum pavement temperature have been related to laboratory rutting tests conducted on compacted mixes (Anderson and Kennedy, 1993)....
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Journal Article•DOI•

Rheological analysis of multi-stress creep recovery (MSCR) test

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Thamindra Lakshan Jayanthi Wasage¹, Jiri Stastna¹, Ludo Zanzotto¹•Institutions (1)

University of Calgary¹

13 Jun 2011-International Journal of Pavement Engineering

TL;DR: In this article, the multi-stress creep recovery (MSCR) test was proposed by the United States Federal Highway Administration to replace the AASHTO M 320-05 high-temperature specification parameter and various SHRP+test methods.

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Abstract: It has been known for some time that the current AASHTO M 320-05 specification does not address the true rutting potential of modified asphalt binders The multi-stress creep recovery (MSCR) test was proposed by the United States Federal Highway Administration to replace the AASHTO M 320-05 high-temperature specification parameter and various SHRP+test methods The new parameter of non-recoverable compliance, Jnr, is currently being considered as a replacement for the Superpave high-temperature binder parameter of |G*|/sin δ (ω = 10 rad/s) (AASHTO TP 70-09) An investigation of the suggested new parameter in capturing the rutting potential and a rheological analysis of the MSCR test method were carried out for conventional and modified asphalt binders and are reported in this paper The laboratory wheel tracking test was conducted to study the rutting potential of asphalt mixes prepared with the same asphalt binders Correlation of the new parameter, Jnr, with rutting in asphalt mixes is briefly discussed

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150 citations

Cites background from "Development of SHRP binder specific..."

...This parameter, which was found to work well for unmodified asphalts, does not give correct predictions for polymer-modified asphalts (PMAs; Anderson and Kennedy 1993, Bahia et al. 2001, Bouldin et al. 2001, Shenoy 2001, D’Angelo and Dongre 2002)....
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Pavement recycling guidelines for state and local governments: Participant`s reference book. Final report, September 1995--December 1997

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P.S. Kandhal, R.B. Mallick

01 Dec 1997

TL;DR: In this paper, the authors provide the following information on recycling of asphalt pavements: (1) performance data, (2) legislation/specification limits, (3) selection of pavement for recycling and recycling strategies, (4) economics of recycling, and (5) structural design of recycled pavements.

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Abstract: Recycling or reuse of existing asphalt pavement materials to produce new pavement materials has the following advantages: (1) reduced costs of construction, (2) conservation of aggregate and binder, (3) preservation of the existing pavement geometrics, (4) preservation of the environment, and (5) conservation of energy. This document was prepared to provide the following information on recycling of asphalt pavements: (1) performance data, (2) legislation/specification limits, (3) selection of pavement for recycling and recycling strategies, (4) economics of recycling, and (5) structural design of recycled pavements. The following recycling methods have been included: hot-mix asphalt recycling (both batch and drum plants), asphalt surface recycling, hot-in-place recycling, cold-mix asphalt recycling, and full depth reclamation. Materials and mix design, construction methods and equipment, case histories and quality control/quality assurance have been discussed for all recycling methods.

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144 citations

Cites background from "Development of SHRP binder specific..."

...All the projects were reported to be performing extremely well in 1992.((13)) Figures 2-5 through 2-8 show before and after recycling photographs of two pavements in rural New York....
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...7 (8-72) Reproduction of completed page authorized...
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...All of these projects were reported to be performing satisfactorily in 1992.((13)) Of the eight projects, six were on Interstates with average daily traffic volumes of 9,000 to 62,000 vehicles....
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Development of SHRP binder specification

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Cites background or methods from "Development of SHRP binder specific..."

Cites background from "Development of SHRP binder specific..."

Cites background from "Development of SHRP binder specific..."

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