Performance of a Highly Polymer-Modified Asphalt Binder Test Section at the National Center for Asphalt Technology Pavement Test Track

2016 ◽  
Vol 2575 (1) ◽  
pp. 1-9 ◽  
Author(s):  
J. Richard Willis ◽  
David H. Timm ◽  
Robert Kluttz
Keyword(s):  
Test Section ◽  
Asphalt Binder ◽  
Test Track ◽  
Modified Asphalt ◽  
Modified Asphalt Binder ◽  
Polymer Modified Asphalt

Nonlinear Viscoelastic Response of Crumb Rubber Modified Asphalt Binder Under Large Strains

2020 ◽  
Vol 2674 (3) ◽  
pp. 139-149
Author(s):  
Saqib Gulzar ◽  
B. Shane Underwood
Keyword(s):  
Asphalt Binder ◽  
Crumb Rubber ◽  
Oscillatory Shear ◽  
Asphalt Binders ◽  
Large Strains ◽  
Viscoelastic Response ◽  
Modified Asphalt ◽  
Nonlinear Viscoelastic ◽  
Modified Asphalt Binder ◽  
Polymer Modified Asphalt

Agencies have been increasing their use of polymer modified asphalt binders in recent years to address performance issues and lengthen the useful life of their pavements. When deployed these materials likely experience strain levels exceeding their linear viscoelastic (LVE) limits. The same situation exists in non-polymer modified asphalt binders as well, but the effect may be more pronounced in polymer modified systems because of their bi-phasic nature. In this study, terminally blended crumb rubber (CR-TB) modified asphalt is studied to understand and quantify the nonlinear viscoelastic response under large strains. The CR-TB binders are extensively used in pavements subjected to high vehicular loads and extreme climatic conditions; thereby, their response under large strains becomes more critical. The current standard characterization techniques are based on LVE response using small amplitude oscillatory shear rheology only and do not consider the behavior of binders under large strains. In this study, large amplitude oscillatory shear (LAOS) rheology is used as a framework to more thoroughly investigate the complete response of the CR-TB modified asphalt binder under large strains at 30°C, 40°C, 50°C, and 60°C and at the frequencies of 0.5, 1, and 5 Hz. The LAOS response is analyzed using Fourier-transform rheology and the orthogonal stress decomposition method involving Chebyshev polynomial representation. It is found that nonlinearity manifests greatly in this study material as strain levels increase and frequencies decrease. The relative nonlinearity increases with increasing strain amplitude and is more significant towards lower end of the tested temperature range. The CR-TB binder shows strain-stiffening/softening and shear-thinning/thickening behavior depending upon a specific temperature, strain level, and frequency.

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.

Steelframe reinforced plug joint towards seamless bridge deck

2021 ◽  
Author(s):  
Yousong Peng ◽  
Sichang Liu ◽  
Yi Wang ◽  
Jie Li ◽  
Jian Ren ◽  
...  
Keyword(s):  
Bridge Deck ◽  
Asphalt Binder ◽  
Vertical Stiffness ◽  
Modified Asphalt ◽  
Bridge Span ◽  
Design Life ◽  
Future Improvement ◽  
Modified Asphalt Binder ◽  
Polymer Modified Asphalt ◽  
Strength And Durability

<p>The application of asphaltic plug joints (APJs) for road bridges has spread worldwide. The APJ consists of polymer modified asphalt binder mixed with selective aggregates filled in the cut-out centred over the gap between bridge span ends or between the bridge deck and abutment. APJs have the advantages of being watertight and free of debris, providing a smooth seamless riding surface through the whole bridge deck for vehicles to pass over with less bump and impact. They are simple, easy, and quick to install. Nevertheless, APJs have some major disadvantages. They are soft, pliable, and weak at higher temperatures. Thus, they can deteriorate severely well in advance of their intended design life. This paper presents a new joint type, i.e. the steelframe reinforced asphaltic plug joint (SRAPJ), modified from the APJ with innovative steelframe reinforcement embedded inside it to enhance its strength and durability. The steelframe has enough vertical stiffness to match the bridge deck and enough longitudinal deformation capacity to accommodate bridge movements from thermal variations and vehicular actions. An experimental application of SRAPJs in a highway bridge and discussion on their performance are also presented. Finally, suggestion for future improvement is proposed.</p>

Compound rejuvenation of polymer modified asphalt binder

2010 ◽  
Vol 25 (6) ◽  
pp. 1070-1076 ◽  
Author(s):  
Tao Ma ◽  
Xiaoming Huang ◽  
Yongli Zhao ◽  
U. Bahia Hussain
Keyword(s):  
Asphalt Binder ◽  
Modified Asphalt ◽  
Modified Asphalt Binder ◽  
Polymer Modified Asphalt

Effect of Soybean Oil Derived Additives on Improved Performance of Polymer-Modified Asphalt Binder and Mix Containing 50% Fine-Graded RAP

2021 ◽  
pp. 615-621
Author(s):  
Joseph Podolsky ◽  
Austin Hohmann ◽  
Conglin Chen ◽  
Zahra Sotoodeh-Nia ◽  
Nicholas Manke ◽  
...  
Keyword(s):  
Soybean Oil ◽  
Asphalt Binder ◽  
Modified Asphalt ◽  
Modified Asphalt Binder ◽  
Improved Performance ◽  
Polymer Modified Asphalt
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