Materials Approach to Improving Asphalt Pavement Longitudinal Joint Performance

2021 ◽  
pp. 036119812110444
Author(s):  
Jim Trepanier ◽  
John Senger ◽  
Todd Thomas ◽  
Marvin Exline
Keyword(s):  
Life Extension ◽  
Asphalt Pavements ◽  
Department Of Transportation ◽  
Joint Region ◽  
Joint Performance ◽  
Asphalt Cement ◽  
Modified Asphalt ◽  
Longitudinal Joint ◽  
Longitudinal Joints ◽  
Polymer Modified Asphalt

Many states are looking for methods to improve longitudinal joint performance of their asphalt pavements, since these joints often fail before the rest of the surface. With their inherently lower density, longitudinal joints fail by cracking, raveling, and potholing because of the intrusion of air and water. Because of their longitudinal joint issues, and after trying several less-than-successful traditional solutions, Illinois Department of Transportation (IDOT) developed a concept to seal the longitudinal joint region, but from the bottom up. Test sections were constructed in 2001 through 2003 to determine how a newly developed material, called longitudinal joint sealant (LJS), would improve joint performance. LJS is a highly polymer-modified asphalt cement with fillers and is placed at the location of a longitudinal joint before paving. As mix is paved over it, the LJS melts and migrates up into voids in the low-density mix, making the mix impermeable to moisture while sealing the longitudinal joint itself. The IDOT test pavements were evaluated after 12 years and found to have longitudinal joints that exhibited significantly better performance than the control joint sections and were in similar or better condition than the rest of the pavement. Laboratory testing of cores showed decreased permeability and increased crack resistance of mix near joints with LJS as compared with similar mix without LJS. The life extension of the joint area is approximately 3–5 years, and the benefit is calculated to be three to five times the initial cost.

Georgia Department of Transportation’s Experience with Microsurfacing

1998 ◽  
Vol 1616 (1) ◽  
pp. 42-46 ◽  
Author(s):  
Donald Watson ◽  
David Jared
Keyword(s):  
Department Of Transportation ◽  
Asphalt Emulsion ◽  
Modified Asphalt ◽  
Crack Sealing ◽  
Traffic Volumes ◽  
Henry County ◽  
Heavy Truck ◽  
Double Surface ◽  
Polymer Modified Asphalt ◽  
Pavement Noise

Microsurface mix, or microsurfacing, can be used for sealing and providing a friction surface for cracked and deteriorated surface mixes. This mix, essentially consisting of 9.5-mm (0.37-in.) screenings bonded by a polymer-modified asphalt emulsion, is economical and can be placed very swiftly. Microsurfacing is also aesthetically pleasing because of its resemblance to hot-mix asphalt. In 1990–1991, the Georgia Department of Transportation (GDOT) successfully used microsurfacing in a test section on I-75 in Henry County, which had high traffic volumes and a heavy truck concentration. Two varieties of the mix were used, and both showed little deterioration after 2 years. In 1996, GDOT opted to use microsurfacing for a 9.2-km (5.7-mi) section of I-285 in Atlanta between Conley Road and Old National Highway. This 92 lane-km (57-lane-mi) project was initiated to address the raveling and cracking in the section and improve its appearance before the 1996 summer Olympics. The I-285 project began in late May 1996 and was completed in 1 month. The microsurfacing used on I-285 has performed quite well since the project was completed. No additional problems with raveling or load cracking have been encountered. The mix has provided excellent smoothness and good friction, with a minimal increase in pavement noise levels. Microsurfacing may be suitable for use on cracked pavements in lieu of more conventional rehabilitation methods such as crack sealing, leveling, and double surface treatments.

A Review of Advance Nanotechnology against Pavement Deterioration

2015 ◽  
Vol 1113 ◽  
pp. 9-12 ◽  
Author(s):  
C.M. Nurulain ◽  
P.J. Ramadhansyah ◽  
A.H. Norhidayah
Keyword(s):  
New Technology ◽  
Permanent Deformation ◽  
Asphalt Binder ◽  
Construction Materials ◽  
Fatigue Cracking ◽  
Asphalt Pavements ◽  
X Ray Diffraction ◽  
Modified Asphalt ◽  
Modified Asphalt Binder ◽  
Polymer Modified Asphalt

This paper presents a review of nanoclay as a latest technology in order to overcome problem due deterioration such as rutting, fatigue, stripping, cracking and so on. Nowadays, with increasing of traffic volume and heavy vehicle conditions of existing road totally fail in order to accommodate this situation during design period. In order to manage this problem the new technology had been create and apply. Previous researches prove that nanotechnology has potential solution to enhance the performance and durability of construction materials. Material properties were characterized using Fourier-transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). According to previous research there were proved that addition of nanoclay lead great improvements on permanent deformation and fatigue life of hot mix asphalt (HMA). In addition the overall performance of nanoclay as polymer modified asphalt binder was improve in terms of rutting and fatigue cracking resistance compare to non-modified asphalt binder. Therefore, nanoclay itself would be an alternative as modifier to use in the bitumen to improve the lifetime of asphalt pavements.

Investigation of the effects of different polymer-modified asphalt cements on asphalt mixes at low temperature

2007 ◽  
Vol 34 (5) ◽  
pp. 589-597 ◽  
Author(s):  
K Kandil ◽  
A O Abd El Halim ◽  
Y Hassan ◽  
A Mostafa
Keyword(s):  
Low Temperature ◽  
High Resistance ◽  
Asphalt Concrete ◽  
Elevated Temperatures ◽  
Winter Season ◽  
Experimental Program ◽  
Asphalt Cement ◽  
Modified Asphalt ◽  
Concrete Mixtures ◽  
Polymer Modified Asphalt

The extreme environmental conditions in Canada require the use of asphalt cement that can provide a high resistance to low-temperature cracking during the winter season and a high resistance to rutting due to the elevated temperatures in the summer. Earlier studies showed that such desired improvements in the quality of asphalt cement could be achieved using polymer-modified asphalt (PMA) cement. This paper presents a three-phase experimental program that was carried out to evaluate the expected performance of asphalt concrete mixtures with PMA compared to asphalt concrete mixtures with conventional and air-oxidized asphalt binders. The results of this study show that PMA in asphalt concrete mixes would significantly improve the resistance to cracking (loading and low-temperature). Key words: asphalt mixtures, polymer-modified asphalt, conventional asphalt cement, air-oxidized asphalt, testing.

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