Sep 03 2017 · In this study the Asphalt Pavement Analyzer (APA) was investigated for its ability to detect asphalt paving mixtures designed for airfields that may be prone to rutting. The objective of this study is to evaluate acceptance criteria for the APA tests for asphalt mixtures prepared using unmodified and modified binders.
Chat OnlineAsphalt Pavement Analyzer (APA)is a three wheel multi-functional Loaded Wheel Tester (LWT) used for evaluating permanent deformation (rutting) fatigue cracking and moisture susceptibility of both hot and cold asphalt mixes. The APA meets all provisions for AASHTO T324-14 Hamburg Wheel Tracking Test and AASHTO T340-10 APA Rut Test.
Chat OnlineAdvanced Asphalt Technologies LLC "Engineering Services for the Asphalt Industry" Wheel Tracking Test Standardization • HamburgAASHTO T324 Hamburg Wheel-Track Testing of Compacted Hot Mix Asphalt (HMA) • Asphalt Pavement AnalyzerAASHTO TP63 Determining the Rutting Susceptibility of Hot Mix Asphalt Using the Asphalt
Chat OnlineNumerous researchers have proposed a variety of laboratory tests that have showed promise at predicting asphalt mixture performance yet most of these test methods are never adopted due to a number of issues often cited by the asphalt industry (1) equipment cost (2) equipment/test method complexity and (3) time/labor effort required.
Chat OnlineThe following categories of testing and calculations are performed by the Asphalt Mix Laboratory. Sample Preparation Heating mixing and splitting. Asphaltic Mixture Testing of Laboratory and Field produced samples Superpave Gyratory Compaction Rut depth using Asphalt Pavement Analyzer Ignition Furnace Sieve Analysis
Chat OnlineFor these reasons the Asphalt Pavement Analyzer (APA) has been widely adopted for checking the rutting resistance of HMA during the mix design process in many states. State procedures for APA testing are based on American Association of State Highway and Transportation Officials (AASHTO) TP 63. This AASHTO procedure was updated in 2007.
Chat OnlineThe results of the dynamic modulus test asphalt pavement analyzer flow number bending beam fatigue indirect tension creep compliance and strength test energy ratio and moisture
Chat OnlineASPHALT PAVEMENT ANALYZER-JUNIOR (APA JR.) SPECIFICATION General The APA-Jr. is a multifunctional loaded wheel tester that is used to evaluate Cold Mix Warm Mix and Hot Mix asphalt in a dry or submerged in water condition. The APA Jr. automatically displays in a numeric and graphical format the real-time development of permanent deformation.
Chat OnlineThe Asphalt Pavement Analyzer (APA) is a mix design "torture test" that can provide empirical testing of asphalt mixes at the design stage. The APA which is an evolution of the Georgia Loaded Wheel Tester (LWT) is one of several loaded wheel testers used for accelerated performance testing of asphalt
Chat OnlineAsphalt Pavement Analyzer (Figure 3) Figure 3 Asphalt Pavement Analyzer (APA). The Asphalt Pavement Analyzer (APA) is a second generation device that was originally developed in the mid 1980s as the Georgia Loaded Wheel Tester a device designed for rut proof testing and field quality control.
Chat OnlinePERFORMANCE TESTING Overview Asphalt mix performance tests were conducted on plant produced samples taken from the field in order to compare the rutting moisture sensitivity fatigue and low temperature properties of the WMA and HMA. Rutting resistance was measured in a loaded wheel test using an Asphalt Pavement Analyzer (APA).
Chat OnlineDynamic Stability (DS) the number of load repetitions to generate 1-mm rutting during the last 15-min of one-hour testing has been selected to characterize rutting for HMA. During the recent years another version of LWT the Asphalt Pavement Analyzer (APA) has been introduced into China and has gained popularity in pavement industry.
Chat OnlineDevelopment of Laboratory Performance Test Procedures and Trial Specifications for Hot Mix Asphalt Final Report 5. Report Date September 22 2004 7. Author(s) R. Chris Williams Ph.D. Dan Hill Krista Hofmann Mike Zelenock and Jason Bausano 6. Performing Organization Code 9. Performing Organization Name and Address
Chat OnlineFAA Home Airports Engineering Design Construction Pavement Design Airport Pavement Design Construction Associated with Advisory Circulars 150/5320-6 150/5335-5 and 150/5370-10. Share Share on Facebook Tweet on Twitter More than half of all Airport Improvement Program funds go toward constructing or rehabilitating runways taxiways and aprons.
Chat OnlineinfraTest Solutions Asphalt Asphaltanalysator Polymer- and rubber-modified binders In order to meet the current requirements for asphalt pavement quality properties of the bitumen available on market today are often modified by adding polymers rubber or other admixtures and additives.
Chat OnlineThe Asphalt Pavement Analyzer (APA) Rutting is a wheel track test that utilizes a steel wheel tracking over a rubber hose to simulate traffic loading. This test is used to determine early life rutting in asphalt pavements.
Chat OnlineMay 16 2018 · Testing was conducted used a bi-axial repeated load test to simulate the axial and shear stresses developed during airplane trafficking. Asphalt Pavement Analyzer (APA) testing of different a FAA #3 surface course mix with various PG-graded asphalt binders showed that as expected asphalt binders with higher PG grades are less susceptible to
Chat OnlineAug 08 2017 · The Asphalt Pavement Analyzer by Pavement Technology Inc. is a three wheel multi-functional Loaded Wheel Tester (LWT) used for evaluating permanent deformation (rutting) fatigue cracking and
Chat Onlineand has no stability or rut test to verify or proof test designed mixes. The Asphalt Pavement Analyzer (APA) has shown some promise as a rut testing equipment (1-8). The APA is a modified version of the Georgia loaded wheel tester developed by the Georgia Department of Transportation.
Chat Onlineinnovative asphalt and aggregate sampling and testing equipment. B. History In the spring of 1996 PTI was formed by a joint venture between Ronald Collins and . The first Asphalt Pavement Analyzer and Asphalt Vibratory Compactor were manufactured at in Chattanooga TN.
Chat OnlineAsphalt Pavement Analyzer (APA) The APA originated in Georgia from the concept of microsurface/slurry rut testing. GA developed the APA so it could measure the rutting risk of asphalt mixtures before placement. The APA is still used by the GA DOT for proof testing of mixtures. This test seems to be most widely used in the Eastern U.S.
Chat OnlineThe Asphalt Pavement Analyzer comes fully equipped to run many loaded wheel tests. Concave wheels to perform rut and moisture testing solid wheels for fatigue and Hamburg testing are all included in sets of three each. Four sets of High Density Polyethylene Molds for rut moisture fatigue and Hamburg testing are included each as a set of three.
Chat OnlineThe following categories of testing and calculations are performed by the Asphalt Mix Laboratory. Sample Preparation Heating mixing and splitting. Asphaltic Mixture Testing of Laboratory and Field produced samples Superpave Gyratory Compaction Rut depth using Asphalt Pavement Analyzer Ignition Furnace Sieve Analysis
Chat OnlineThe HM-459 Asphalt Pavement Analyzer (APA) by Pavement Technology is a three-wheel multi-function Asphalt Wheel Tracker for accurate evaluation of rutting fatigue cracking and moisture susceptibility of hot and cold asphalt mixes. This versatile model complies with AASHTO methods T 234 Hamburg Test (with solid wheels) and AASHTO T 340 APA Rut Test (with concave wheels).
Chat OnlineAsphalt Pavement Analyzer. Hamburg Wheel Track TestingAASHTO T324. Rutting Susceptibility with APAAASHTO T340 Asphalt Mixture Performance Tester. Dynamic Modulus TestingAASHTO T378. Flow Number TestingAASHTO T378. Fatigue and reflective cracking (Texas Overlay)Tex-248. Stress Sweep RuttingAASHTO TP 134
Chat OnlineThe Asphalt Pavement Analyzer comes fully equipped to run many loaded wheel tests. Concave wheels to perform rut and moisture testing solid wheels for fatigue and Hamburg testing are all included in sets of three each. Four sets of High Density Polyethylene Molds for rut moisture fatigue and Hamburg testing are included each as a set of three.
Chat OnlineASPHALT PAVEMENT ANALYZER-JUNIOR (APA JR.) SPECIFICATION General The APA-Jr. is a multifunctional loaded wheel tester that is used to evaluate Cold Mix Warm Mix and Hot Mix asphalt in a dry or submerged in water condition. The APA Jr. automatically displays in a numeric and graphical format the real-time development of permanent deformation.
Chat OnlineASPHALT PAVEMENT ANALYZER-JUNIOR (APA JR.) SPECIFICATION General The APA-Jr. is a multifunctional loaded wheel tester that is used to evaluate Cold Mix Warm Mix and Hot Mix asphalt in a dry or submerged in water condition. The APA Jr. automatically displays in a numeric and graphical format the real-time development of permanent deformation.
Chat OnlineModified Pneumatic Adhesion Tensile Testing Instrument (PATTI) and pull-off tests used to characterize the adhesion between binders and aggregates. Repeated loading test equipment such as the Texas Overlay Tester (OT) the Hamburg Wheel Tracking Test (HWTT) and the Asphalt Pavement Analyzer
Chat OnlineAug 16 2018 · Based on the results the asphalt pavement analyzer test is recommended as a rutting performance test for airport hot-mix asphalt mixture design. The test was selected for recommendation based on its ability to differentiate between and rank mixture performance measures and to identify significant improvement when polymer-modified binders are
Chat OnlineAdvanced Asphalt Technologies LLC "Engineering Services for the Asphalt Industry" Wheel Tracking Test Standardization • HamburgAASHTO T324 Hamburg Wheel-Track Testing of Compacted Hot Mix Asphalt (HMA) • Asphalt Pavement AnalyzerAASHTO TP63 Determining the Rutting Susceptibility of Hot Mix Asphalt Using the Asphalt
Chat OnlineIntelligent Compaction Analyzer (IACA) Need Proper compaction of newly applied asphalt helps ensure a crack-free paved surface and longer lasting roadway. But if compaction levels do not meet the design requirements it can result in early degradation of the pavement.
Chat OnlineThe ATS Asphalt Performance Testing Lab focuses on asphalt binder testing aggregate testing asphalt performance testing to predict cracking and rutting potential of asphalt mixtures using Hamburg Wheel Tracking (HWT) or Asphalt Pavement Analyzer (APA) and asphalt additive testing.
Chat OnlineAAT is your source for accredited asphalt material testing services. Our state of the art laboratory is an AASHTO accredited full-service "one-stop-shop" for all of your asphalt testing needs. Our skilled engineers and technicians provide a full range of asphalt testing services.
Chat OnlinePTI designs and builds innovative sampling and testing equipment for the hot mix asphalt and aggregate industries including asphalt performance and testing equipment loaded wheel testers asphalt pavement analyzers automated sampling equipment..
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