Comparison of Laboratory Wheel-Tracking Test Results with Wes Track Performance

1999 ◽  
Vol 1681 (1) ◽  
pp. 121-128 ◽  
Author(s):  
R. Christopher Williams ◽  
Brian D. Prowell
Keyword(s):  
Test Results ◽  
Wheel Tracking Test ◽  
Wheel Tracking

Pavement Performance of Hot In-Place Recycling for Waste Asphalt Mixtures

2013 ◽  
Vol 668 ◽  
pp. 292-296
Author(s):  
Ya Li Ye ◽  
Chuan Yi Zhuang ◽  
Jia Bo Hu
Keyword(s):  
Asphalt Mixture ◽  
Asphalt Mixtures ◽  
Asphalt Pavements ◽  
Pavement Performance ◽  
Test Results ◽  
Technical Parameters ◽  
Stable Performance ◽  
Wheel Tracking Test ◽  
Asphalt Content ◽  
Wheel Tracking

With the early asphalt pavements have been into the stage of medium maintenance or overhaul, recycling is a very important way for waste asphalt mixtures. A sample was taken in the expressway from Huhhot to Baotou, and the waste mixtures were extracted from field and sieved; so that the new aggregates can be determined and mix design was carried. With the aid of the penetration, the softening point and the viscosity in 135°C test, the quantity of the regenerant and the asphalt content were ascertained. Through the high temperature stable performance, the anti-low temperature performance, the water stability and the Hamburg wheel-tracking test, the appropriate gradation and the optimum asphalt content were determined. The test results showed that the pavement performance of the waste asphalt mixture was enhanced obviously with hot in-place recycling, and it has achieved technical parameters for old asphalt mixture.

scholarly journals Laboratory Investigation of Materials Type Effects on the Microsurfacing Mixture

2016 ◽  
Vol 2 (3) ◽  
pp. 86-94 ◽  
Author(s):  
Mohammad Shafaghat Lonbar ◽  
Mahmoud Nazirizad
Keyword(s):  
Laboratory Investigation ◽  
Treatment Options ◽  
Test Results ◽  
Asphalt Mixes ◽  
Pavement Preservation ◽  
Abrasion Loss ◽  
Wheel Tracking Test ◽  
Wheel Tracking ◽  
Track Test ◽  
Adhesive Materials

Pavement preservation is a quintessential system of treating pavements at the optimum time to maximize their useful life. One of the preventive maintenance treatment options is using microsurfacing system as the acceptable and economical solution. This study presents a laboratory investigation of aggregate type and adhesive materials and their relationship to microsurfacing pavement properties such as cohesion, wet track abrasion loss, excess asphalt and compaction. The method of this study relies on ISSA A143, using the Cohesion 30 min and 60 min, Wet track abrasion loss, Loaded-wheel excess asphalt and finally Loaded-wheel compaction. The verification of this method was achieved through measuring the various factors of specimens constructed in laboratory using two different aggregate sources as river and mountain aggregates and two binders as CSS-1h and CQS-1h. The results showed that mixes contain riverine aggregates showed more cohesion properties. Base on wet track test results mixes, mixes containing riverine type aggregate were more resistant to abrasion. In addition CQS-1h emulsion showed better adhesiveness against abrasion in both types of aggregates in asphalt mixes. With increased amount of emulsions in mixes, load wheel values increased as well. Loaded wheel compaction test results confirmed that river based aggregates are more susceptible to rutting failure. The results of wheel tracking test illustrated that CSS-1h emulsion applied in mixes had better resistance to rutting.

Research of Particle Contact Mechanics Behaviors and Applicative Evaluation for Asphalt Mixture

2010 ◽  
Vol 168-170 ◽  
pp. 86-93
Author(s):  
She Liang Wang ◽  
Xi Yu Zhu ◽  
Xian Tang
Keyword(s):  
Contact Stiffness ◽  
Asphalt Mixture ◽  
Contact Theory ◽  
Test Results ◽  
Dead Weight ◽  
Particle Contact ◽  
Stiffness Model ◽  
Wheel Tracking Test ◽  
Asphalt Content ◽  
Wheel Tracking

Different gradation types may have different particle contact behaviors for asphalt mixture, so that it holds diverse pavement performances. The particle contact theory explains the particle contact behaviors law during movement. A particle contact behaviors model was established, which is easy to describe and apply on the spot. A line contact stiffness model was used to simulate particle contact behaviors for gradation types of CA0.2, CA0.4, CA0.6 and CA0.8 when particle of asphalt mixture is moving with dead weight. Their pavement performances were verified with Marshall test, wheel tracking test, gyratory compacting test and the index of potential energy test under optimum asphalt content. Test results show that their service performance is identical to simulation result of particle contact during movement with dead weight. With the help of the research, it can supply some theoretical and applicative bases for an optimum mixture gradation design and indoor gradation simulating design for asphalt mixture.

scholarly journals Performance Evaluation of Warm Asphalt Mixtures Containing Chemical Additive and Effect of Incorporating High Reclaimed Asphalt Content

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3793
Author(s):  
Mukul Rathore ◽  
Viktors Haritonovs ◽  
Martins Zaumanis
Keyword(s):  
Test Results ◽  
Short Term ◽  
Chemical Additive ◽  
Reclaimed Asphalt ◽  
Specimen Test ◽  
Wheel Tracking Test ◽  
Indirect Tensile ◽  
Asphalt Content ◽  
Wheel Tracking ◽  
The Given

Reclaimed asphalt (RA) and Warm mix asphalt (WMA) are two widely used environmentally friendly mixtures in the paving industry. This study compares the laboratory performance of conventional hot mix asphalt (HMA) with virgin WMA, and WMA containing 60% RA content, using thermal stress restrained specimen test, wheel tracking test, and indirect tensile strength test. Based on test results, a reduction of 15 °C in mixing temperature was achieved for WMA mixtures compared to HMA using the given chemical additive. The virgin WMA mixture showed superior cracking resistance but lower rutting resistance than HMA, and incorporation of RA material without any further modification in the binder, deteriorated both cracking and rutting performance of WMA. It was also shown that laboratory short-term aging can significantly affect the performance of the mixtures.

Determining the Relationship Among Hamburg Wheel-Tracking Test Parameters and Correlation to Field Performance of Asphalt Pavements

2020 ◽  
Vol 2674 (4) ◽  
pp. 281-291 ◽  
Author(s):  
Fan Yin ◽  
Chen Chen ◽  
Randy West ◽  
Amy Epps Martin ◽  
Edith Arambula-Mercado
Keyword(s):  
Field Performance ◽  
Asphalt Mixtures ◽  
Test Results ◽  
Moisture Susceptibility ◽  
Rutting Resistance ◽  
Test Parameters ◽  
Wide Range ◽  
Wheel Tracking Test ◽  
Wheel Tracking ◽  
Hamburg Wheel Tracking

The Hamburg wheel-tracking test (HWTT) is commonly used to evaluate the rutting resistance and moisture susceptibility of asphalt mixtures. Over the years, different test parameters have been proposed, including the traditional ones specified in AASHTO T 324 and several alternatives developed by asphalt researchers. This study was undertaken to refine the HWTT method toward enhancing its implementation as part of balanced mix design specifications for asphalt mixtures. A HWTT database was developed including test results of over 70 mixtures with a wide range of mixture components and production parameters. Data analyses were conducted to examine the relationships among various HWTT parameters, determine their correlations to field performance data, and estimate the within-laboratory repeatability of the test results. Two alternative rutting parameters, rutting resistance index ( RRI) and corrected rut depth ( CRD), were found to be advantageous over the traditional parameters of total rut depth ( TRD) and creep slope ( CS). RRI allows for direct comparison of results with different termination points, and CRD isolates the rut depth resulting from permanent deformation from that caused by stripping. Among all the rutting parameters, RRI had the best correlation to field rut depth, followed by CS, CRD, and TRD. Receiver operating characteristic analysis was conducted to determine the correspondence between HWTT results and pavement field performance related to moisture susceptibility. The analysis identified 9,000 passes as the best criterion for stripping inflection point and 2,000 passes for the alternative moisture susceptibility parameter, stripping number. Finally, the within-laboratory repeatability of HWTT rut depth measurements was determined.

Model Mobile Load Simulator Testing at National Center for Asphalt Technology Test Track

2003 ◽  
Vol 1832 (1) ◽  
pp. 182-190 ◽  
Author(s):  
André de Fortier Smit ◽  
Fred Hugo ◽  
Dale Rand ◽  
Buzz Powell
Keyword(s):  
Full Scale ◽  
Scale Model ◽  
Climatic Data ◽  
Test Results ◽  
Test Track ◽  
Wheel Tracking Test ◽  
Load Simulator ◽  
Wheel Tracking ◽  
Prediction Approach ◽  
Semicircular Bending

One-third-scale model mobile load simulator (MMLS3) testing was conducted at the National Center for Asphalt Technology test track. Dry and wet-heated MMLS3 tests were done on five sections. The rutting performances of the sections under MMLS3 trafficking were compared with that under full-scale truck trafficking (truck test sections). A synthesis of the research included evaluation of results from laboratory tests done on cores taken from the MMLS3 test sections within and outside trafficked wheelpaths. Tests on the cores included wet and dry Hamburg wheel tracking, Superpave® shear tester frequency sweep, and semicircular bending (SCB) strength testing. Investigations included the evaluation of full-scale rutting data, laboratory wheel-tracking test results, and climatic data monitored on the track during full-scale truck trafficking. The project validated the rut prediction approach developed to compare MMLS3 and full-scale rutting performance and indicated that the MMLS3 may be used to estimate full-scale rutting at the track under specific conditions. Distress due to wet trafficking was also quantified as reduction in tensile strength as measured by the SCB. Conclusions were drawn and recommendations made for MMLS3 as well as continued full-scale testing at the track. Comparative full-scale rutting performance of the track sections evaluated may be quantified and ranked by the MMLS3 performance of these sections.

scholarly journals Utilización de técnicas petrográficas para evaluar los efectos inducidos del NaCl, condiciones climáticas extremas y el paso del tráfico en las superficies de las carreteras españolas

2017 ◽  
Vol 67 (328) ◽  
pp. 138 ◽  
Author(s):  
A. P. Pérez-Fortes ◽  
M. J. Varas-Muriel ◽  
P. Castiñeiras
Keyword(s):  
El Paso ◽  
Asphalt Mixture ◽  
Polarized Light ◽  
Nacl Solution ◽  
Winter Maintenance ◽  
Traffic Conditions ◽  
Wheel Tracking Test ◽  
Wheel Tracking ◽  
Design Construction

The asphalt surface layer is the most exposed to weather and traffic conditions on roads, especially those subjected to winter maintenance. Therefore, a deep knowledge of the mechanisms which can damage this layer is necessary to improve its design, construction and long-term use. With this purpose, two types of asphalt mixtures used on roads from NW Spain were subjected to durability tests (freezing-thaw and thermal-stress) with a saturated NaCl solution. After the durability tests, a wheel tracking test was performed on the samples, and the resultant material was analyzed by optical polarized light and fluorescence microscopy. This analysis showed that the binder-aggregate low adhesion was the main responsible of the asphalt mixture damage. This damage was concentrated in the aggregates because the binder acted as an impermeable wall. Consequently, the NaCl solution penetrated and degraded the aggregates quickly and strongly.

An approach to investigate coarse aggregates movement of asphalt mixture based on wheel tracking test

2021 ◽  
Vol 309 ◽  
pp. 125161
Author(s):  
Wenchang Liu ◽  
Hongwei Lin ◽  
Hongyu Guo ◽  
Hongchao Zhang ◽  
Shuguang Zhang ◽  
...  
Keyword(s):  
Asphalt Mixture ◽  
Coarse Aggregates ◽  
Wheel Tracking Test ◽  
Wheel Tracking

Comprehensive Evaluation of Rutting of Warm-Mix Asphalt Utilizing Long-Term Pavement Performance Specific Pavement Studies

2020 ◽  
Vol 2674 (7) ◽  
pp. 272-283 ◽  
Author(s):  
Biswajit K. Bairgi ◽  
A.S.M. Asifur Rahman ◽  
Rafiqul A. Tarefder ◽  
Matias M. Mendez Larrain
Keyword(s):  
Comprehensive Evaluation ◽  
Field Investigation ◽  
Warm Mix Asphalt ◽  
Pavement Performance ◽  
Laboratory Evaluation ◽  
Production Temperature ◽  
Wheel Tracking Test ◽  
Modified Binder ◽  
Wheel Tracking

Warm-mix asphalt (WMA) technologies allow binder softening for compaction benefits. Lower production temperature also causes reduced short-term aging in WMA. Considering the long-term implication of the reduced aging and binder softening, WMA is being questioned about its rutting characteristics. As such, this study evaluates different WMA technologies for rutting characteristics in comparison to traditional hot-mix asphalt (HMA) through laboratory and field investigation. The study utilized the long-term pavement performance (LTPP) project in the state of New Mexico called Specific Pavement Study-10 (SPS-10), which was designed to evaluate the WMA performances. The LTPP SPS-10 section includes: (i) control HMA, (ii) foaming, (iii) Evotherm, (iv) Cecabase 1, and (v) Cecabase 2 mixtures. Cecabase 2 mixture consists of a polymer-modified binder (PG 70-28+), whereas other mixtures consist of PG 70-28 binder. The aggregate type, properties, and gradations are the same in all the sections. Laboratory evaluation of rutting was conducted through the Hamburg wheel tracking test. Long-term field rutting was evaluated through Mandli’s pavement profile scanner, a laser-based distress evaluation technology. The study found that WMA with foaming, Evotherm, or Cecabase shows slightly higher rutting compared with the control HMA; however, all the sections satisfied laboratory and field rutting criteria. The use of a polymer-modified binder in WMA significantly improves the rutting characteristics.

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