utilizing lab tests to predict asphalt concrete overlay

Utilizing Lab Tests to Predict Asphalt Concrete Overlay ...

The study of these projects prior to construction, during construction, and for a short monitoring period after construction is intended to determine the impact of various pre-existing pavement conditions, pavement cross-section, mix design, and material properties on the ultimate performance of the asphalt concrete (AC) overlay.

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UTILIZING LAB TESTS TO PREDICT ASPHALT CONCRETE

Oct 01, 2014  UTILIZING LAB TESTS TO PREDICT ASPHALT CONCRETE OVERLAY PERFORMANCE. Prepared By . Imad L. Al-Qadi, David L. Lippert, Shenghua Wu, Hasan Ozer, Greg

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Utilizing Lab Tests to Predict Asphalt Concrete Overlay ...

DOI: 10.36501/0197-9191/17-026 Corpus ID: 891310. Utilizing Lab Tests to Predict Asphalt Concrete Overlay Performance @inproceedings{AlQadi2017UtilizingLT, title={Utilizing Lab Tests to Predict Asphalt Concrete Overlay

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Utilizing Lab Tests To Predict Asphalt Concrete Overlay ...

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Utilizing Lab Tests To Predict Asphalt Concrete Overlay ...

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Utilizing Lab Tests To Predict Asphalt Concrete Overlay ...

Utilizing Lab Tests To Predict Asphalt Concrete Overlay Performance . ... mix design, and material properties on the ultimate performance of the asphalt concrete (AC) overlay. This final report is the third report on this research project. Two interim reports that documented project construction and performance to date have been previously ...

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Laboratory Testing of Fabric lnterlayers for Asphalt ...

Laboratory test methods can be used to predict the relative in-service performance of fabric inter­ layers in asphalt concrete (AC) pavement overlays as well as the amount of asphalt tack coat to be used with each fabric type. To' better understand the need and use of these test methods, the following

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Using overlay test to evaluate fracture properties of ...

Dec 30, 2015  A number of studies have been reported to design laboratory tests to measure fracture properties/parameters and predict crack propagation in asphalt concrete. For example, Wen and Kim [2] modified the traditional indirect tensile (IDT) test to determine the viscoelastic properties by a creep test protocol and fracture properties/parameters by ...

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Improved overlay tester for fatigue cracking resistance of ...

Premature cracking of the asphalt concrete (AC) layer in flexible pavement is one of the major concerns of the pavement community. ... Several highway agencies have either implemented or considered implementing performance tests to predict the cracking potential of AC mixes in the laboratory setting. One such test, the Overlay Tester (OT) test ...

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Recent ICT/IDOT Report Publications ICT - Illinois

Jan 26, 2018  R27-161: Utilizing Lab Tests to Predict Asphalt Concrete Overlay Performance. A series of five experimental projects and three demonstration projects were constructed to better understand the performance of pavement overlays using various levels of asphalt binder replacement (ABR) from reclaimed asphalt pavement (RAP), recycled asphalt shingles ...

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Road and Laboratory Tests on Hot-Mix Asphaltic Concrete

ROAD AND LABORATORY TESTS ON HOT-MIX ASPHALTIC CONCRETE by R. A. Jimenez Associate Research Engineer and Bob M. Gallaway Research Engineer Research Report Number 3 .,.3 (Final) Road (and Laboratory) Tests on Hot-Mix Asphaltic Concrete Research Project Number 3-8-57-3 Sponsored by The Texas Highway Department In Cooperation with the

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Thickness of Asphalt Concrete - everlays

the soaked conditions of the laboratory test. Thus, the overlay thickness should be determined by using the CBR curve equivalent to the weakest subgrade modulus ob­ tained during in-place testing. The proper design thickness for an overlay depends on the condition of the existing pavement. The existing

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Design of Concrete Overlays Using Existing Methodologies

TECH SUMMARY Design of Concrete Overlays Using Existing Methodologies Figure 1. Bonded and unbonded concrete overlay systems (Harrington et al. 2008) Overview of Bonded Concrete Overlays Bonded concrete overlays over existing concrete, asphalt, and composite pavements are used to restore the structural capacity and/or to correct

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Fracture properties of asphalt concrete under various ...

Oct 20, 2019  Utilizing Lab Tests To Predict Asphalt Concrete Overlay Performance. Illinois Center for Transportation/Illinois Department of Transportation (2017) Google Scholar. Shenghua Wu, David L. Lippert, Imad L. Al-Qadi, Hasan Ozer, Izak M. Said, Maxwell K. Barry.

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ASPHALT TESTING: Testing in progress Roads Bridges

Mar 20, 2012  The current asphalt material specifications do not put due emphasis that is needed for mechanical testing of asphalt concrete. There have been considerable amounts of research efforts undertaken to develop so-called asphalt performance tests that can link laboratory-measured parameters to actual pavement performance.

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Developer(s) Illinois Flexibility Index Test (I-FIT)

Utilizing Lab Tests to Predict Asphalt Concrete Overlay Performance. FHWA-ICT-17-020, Urbana, IL: FHWA-ICT-17-020, Urbana, IL: Illinois Center for Transportation, 2017.

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Fabrics in Asphalt Overlays - Design, Construction, and ...

test sections installed in Texas and gives results of laboratory tests on construction materials. Recommendations are given regarding special design and construction procedures which should be followed when a fabric is used in concert with an asphalt concrete overlay.

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Interpreting Falling Weight Deflectometer (FWD) Data (for ...

Apr 16, 2018  when designing bonded concrete overlays.): 6-in diameter cores • DCP testing may be performed in the core holes to establish the stiffness of the granular layers beneath the slab. This information is useful for determining if the time of day that mid-slab testing is performed needs to be restricted, as described in Appendix C-2.

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Utilizing Lab Tests To Predict Asphalt Concrete Overlay ...

Utilizing Lab Tests To Predict Asphalt Concrete Overlay Performance . ... mix design, and material properties on the ultimate performance of the asphalt concrete (AC) overlay. This final report is the third report on this research project. Two interim reports that documented project construction and performance to date have been previously ...

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Laboratory Testing of Fabric lnterlayers for Asphalt ...

Laboratory test methods can be used to predict the relative in-service performance of fabric inter­ layers in asphalt concrete (AC) pavement overlays as well as the amount of asphalt tack coat to be used with each fabric type. To' better understand the need and use of these test methods, the following

get price

Improved overlay tester for fatigue cracking resistance of ...

Premature cracking of the asphalt concrete (AC) layer in flexible pavement is one of the major concerns of the pavement community. ... Several highway agencies have either implemented or considered implementing performance tests to predict the cracking potential of AC mixes in the laboratory setting. One such test, the Overlay Tester (OT) test ...

get price

Thickness of Asphalt Concrete - everlays

the soaked conditions of the laboratory test. Thus, the overlay thickness should be determined by using the CBR curve equivalent to the weakest subgrade modulus ob­ tained during in-place testing. The proper design thickness for an overlay depends on the condition of the existing pavement. The existing

get price

Interpreting Falling Weight Deflectometer (FWD) Data (for ...

Apr 16, 2018  when designing bonded concrete overlays.): 6-in diameter cores • DCP testing may be performed in the core holes to establish the stiffness of the granular layers beneath the slab. This information is useful for determining if the time of day that mid-slab testing is performed needs to be restricted, as described in Appendix C-2.

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Concrete Overlay as a Rehabilitation Option for Distressed ...

strength using the Iowa Shear Test Method, to determine the quality of the bond between the overlay and the asphalt surface. A finite element model was developed to predict the stress response of the composite pavement subjected to the wheel load. This model was used to verify the experimental test results obtained from the accelerated testing of

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Laboratory and Numerical Investigation of Interface ...

Bonded concrete overlay of asphalt (BCOA) is a viable technique for rehabilitating distressed asphalt pavements by bounding a Portland cement concrete overlay to the asphalt pavement. BCOAs are more durable solutions especially for highways and major city intersections where the constant maintenance using bituminous materials is not desirable.

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A Cracking Methodology to Assess Fracture and Fatigue ...

performance tests to predict the cracking potential of asphalt concrete (AC) mixtures in the laboratory setting. One such test, the Overlay Tester (OT) test, measures the number of cycles to failure of the AC specimens by simulating the opening and closing of the cracks induced by daily

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Predicting Field Performance of Skid Resistance of Asphalt ...

Predicting Field Performance of Skid Resistance of Asphalt Concrete Pavement Hui Wang1, Robert Y. Liang2, F, ASCE 1 Research Assistant, Department of Civil Engineering, University of Akron, Akron, OH 44325-3905; Email: [email protected] ... lab test results using an accelerated polishing machine. Based on the trend of friction degradation ...

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Design of Overlay for Flexible Pavement

Asphalt Institute Conversion Factors Subgrade 0.0 Granular sub-base, reasonably well graded, 0.1 – 0.2 hard aggregates with some plastic fines and CBR not less than 20%. Use upper part of range if PI is less than 6; lower part of range if PI is more than 6 Asphalt concrete surfaces and

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Prediction of pavement fatigue cracking at an accelerated ...

Asphalt concrete performance tests are the essential components of performance-related and performance-based specifications, for which they can be used either for screening AC to minimise deterioration risks or to directly predict specific modes of pavement deterioration.

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Ali-HVS Evaluation of Thin Asphalt Overlays

Conduct Laboratory Testing Overlay Tester, Asphalt Pavement Analyzer, AASHTO T283 1 Construct six full-scale pavement sections at 2 CREATEs (includes instrumentation) Apply accelerated loading on each section 3 using a Heavy Vehicle Simulator (HVS)

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Fatigue Performance of Geosynthetic-Reinforced Asphalt ...

Aug 08, 2020  This paper developed a test procedure to conduct four-point beam (4PB) fatigue tests, adapted a permanent deformation evolution model (PDEM) to predict the fatigue life of the 4PB specimens under laboratory testing conditions, and compared the fatigue life of beam specimens reinforced with three types of geosynthetics at 10°C, 20°C, and 30°C.

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GUIDELINES FOR THE THICKNESS DESIGN OF BONDED

Equations were developed to predict the critical concrete stresses and asphalt strains. A mechanistic design procedure is described which allows the evaluation of trial whitetopping thicknesses and joint spacings. The procedure computes the concrete and asphalt fatigue life for specific material properties. Iterations are required to determine

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