Download or read book Effect of Tire Pressure on Flexible Pavement Response and Performance written by Ramon Francis Bonaquist and published by . This book was released on 1988 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pavement Testing Facility written by Ramon Francis Bonaquist and published by . This book was released on 1989 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The effects of tire pressure on flexible pavement response and performance were evaluated using data from the first phase of research at the Federal Highway Administration's Pavement Testing Facility. The Accelerated Loading Facility testing machine was used to simulate traffic loading. The evaluation consisted of three components. First, deflections and strains for various combinations of load and tire pressure were measured and compared. Second, rutting and cracking for two test sections trafficked with the same load but different tire pressures were evaluated. Finally, changes in the pavement materials resulting from traffic were compared for the two sections trafficked with different tire pressures. These three evaluations showed tire pressure to be a second order effect. The effect of tire pressure on flexible pavement response and performance was less significant the effects of load and temperature. During the response experiment, when load and temperature were constant, the effects of tire pressure could be observed. However, in the performance and materials evaluations, the effects of increased tire pressure were masked by differences in temperature"--Technical report documentation page.

Download or read book Pavement Testing Facility written by and published by . This book was released on 1989 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Heavy vehicle Characteristics on Pavement Response and Performance written by Thomas D. Gillespie and published by Transportation Research Board. This book was released on 1993 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Truck Tire Inflation Pressure and Axle Load on Pavement Performance written by and published by . This book was released on 1985 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents the results of an investigation into the effect of truck tire inflation pressure and axle load on flexible and rigid pavement performance as determined using computer analysis. The flexible pavement analysis was conducted with both a nonuniform pressure model and a uniform pressure model as input to the elastic layer program BISAR and the 3D finite element program TEXGAP-3D. A rigid pavement analysis was conducted with both a nonuniform pressure model and a uniform pressure model as input to the program JSLAB.

Download or read book Pavement Damage as Related to Tires Pressures Axle Loads and Configurations written by PE. Sebaaly and published by . This book was released on 1992 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dual radial tires and wide base radial single tires were tested in the laboratory under three levels of inflation pressures and axial loads. The measured characteristics of the tires were gross contact area, net area, tire deflection, and contact pressures. The distributions of contact pressures were used in a theoretical analysis to evaluate the flexible pavement performance related parameter. The response of two flexible pavement structures was investigated in terms of the tensile strains at the bottom of the asphalt layer. In the second phase of this research, two full scale pavement sections were instrumented using strain gages to measure the strains at the bottom of the asphalt concrete layer. The data analysis presented in this paper shows the effect of varying the tire type, tire inflation pressure, and axle load and configuration on the response of flexible pavements. The results of the two studies showed that the wide base single tires are more damaging than the dual tires under all combinations of the test variables.

Download or read book Wide base Truck Tire Effects on Pavement Performance and Vehicle Regulatory Legislation written by Raymond K. Moore and published by . This book was released on 1992 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: Current operating practice in the trucking industry related to tire pressures and truck tires are summarized. Findings of recent (since 1987) pertiment pavement performance research including both full-scale and analytical pavement response and performance studies are discussed. Pertinent findings developed in previous literature reviews are also included. Regulatory approaches developed by the various states based on information from a telephone survey conducted during July and August 1991 are included. Economic analyses are used to compare the increased annualized bituminous pavement rehabilitation costs with trucking industry benefits. Recommendations regarding the regulation of wide-base truck tires are presented.

Download or read book The Effect of Tire Pressures on Flexible Pavements written by Freddy L. Roberts and published by . This book was released on 1986 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study includes the results of (1) a field study to determine the tire inflation pressures currently being carried by Texas highways, (2) a literature and analytical study to determine what tire contact pressures are actually being applied by modern tires to pavements, and (3) an analytical study to evaluate the effect of those contact pressures on the stresses and strains in typical Texas flexible pavements. Descriptions of the analytical studies include discussions of the finite element computer program used to model the tire carcass and the flexible pavements. The tires included in the analytical study included both truck and passenger car tires operated at typical loads and inflation pressures.

Download or read book Effect of Tire Pressure and Types on the Response of Flexible Pavement written by P. Sebaaly and published by . This book was released on 1988 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Significant Findings from Full scale Accelerated Pavement Testing written by Frederick Hugo and published by Transportation Research Board. This book was released on 2004 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 325: Significant Findings from Full-Scale Accelerated Pavement Testing documents and summarizes the findings from the various experimental activities associated with full-scale accelerated pavement testing programs.

Download or read book Vehicle Tire Pavement Interface written by John Jewett Henry and published by ASTM International. This book was released on 1992 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Effects of Tire Size and Inflation Pressure on Tire Contact Stresses and Pavement Response written by and published by . This book was released on 2006 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: A specific objective was to establish how tire contact stresses may be modeled in existing layered elastic programs to better approximate the effects of non-uniform tire contact pressure distributions, and account for differences in tire construction, tire load, and tire inflation pressure on predicted pavement response. To this end, researchers assembled a data base of measured tire contact stresses and performed a comparative evaluation of methods for representing tire contact pressure distributions in existing models to predict performance-related pavement response variables. A computer program called TireView was developed that provides estimates of tire contact area as a function of tire type, tire load, and tire inflation pressure and predicts the stress distribution at the tire-pavement interface based on polynomial interpolations of measured tire contact stresses in the data base. A method for predicting pavement response using layered elastic analysis is proposed that is based on the predicted tire contact area.

Download or read book Effect of High Tire Pressure on Flexible Pavements written by Keng Mun Low and published by . This book was released on 1990 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rigid and Flexible Pavement Design and Analysis written by and published by Transportation Research Board National Research. This book was released on 1989 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impacts of Tires and Axle Configurations on Perpetual Pavement Response written by Derar Mohammad Hamed Tarawneh and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Perpetual pavement can be defined as a flexible pavement that lasts longer than 50 years by maintaining strain at the bottom of the Asphalt Concrete (AC) layer below a specified threshold called fatigue endurance limit. This goal can be achieved by designing a proper pavement thickness and underlying layers that resist pavement distresses. In this research, U.S. route 23 project in Delaware County, Ohio, was considered, which is one of the Strategic Highway Research Test roads (SHRP). This study aims to optimize the thickness of pavement layers to achieve the acceptance criterion of perpetual pavements in Ohio. A three-dimensional viscoelastic finite element model was developed to simulate perpetual pavement response under a different truck and tire configurations, pavement temperature, AC layer thicknesses, soil stabilization, traffic speed and tire pressures. The viscoelastic model was calibrated and validated using field-measured pavement responses using dynamic instrumentation gages embedded in the pavement layers during construction. The viscoelastic behavior of asphalt material was determined by following interconversion procedures using dynamic modulus test results to estimate Prony series where 9 terms of Prony series were used. The results showed that the developed viscoelastic model accurately captures and predicts pavement response in comparison to measured values. Six cases of thickness variation incorporated with five cases of temperature variation with and without subgrade stabilization were studied to optimize the thickness of perpetual pavement under loading and environmental conditions. The results showed that changing the AC base thickness has a higher impact on reducing tensile strain at the bottom of the AC layer despite changing aggregate base thickness due to stiffness difference. In addition, utilizing stabilized subgrade allows thinner pavement design by reducing tensile strain at the bottom of AC layer and confining stresses at the top layers. All analyses showed that a pavement section with 13 in (33 cm) AC thickness incorporated with 18 in (45.7 cm) stabilized subgrade behaved perpetually under all traffic loading and environmental conditions. Therefore, 13 in (33 cm) section is considered as the optimum perpetual pavement thickness. Two trucks were used in this study: a single axle truck with wide base tiers and a tandem axle truck with conventional dual tires. The analysis showed that single axle truck with wide-base tires exerted higher strain and, therefore, greater damage than tandem axle truck with dual tires. Furthermore, truck speed has a high impact on pavement response where at a lower speed, higher tensile strain was recorded compared to the higher speed. However, no clear trend was found on the impact of tire pressure on pavement response. Finally, the impact of short gaps between trucks in truck platooning in perpetual pavement fatigue life was investigated. Four different distances were used: 10 ft. (3m), 20 ft. (6m), 33 ft. (10 m) and 50 ft. (15 m) and tensile strain at the bottom of AC later was recorded. The results showed that the shorter the truck spacing, the lower the fatigue life, where increasing the spacing from 10 ft. (3 m) to 20 ft. (6m) increased the fatigue life by 38 %. Accordingly, the perpetual pavement section with optimized thickness can be considered a platoonable section when truck spacing reaches 33 ft. (10 m) or more.

Download or read book Effects of Tire Pressures on Flexible Pavements written by R.L. Roberts and published by . This book was released on 1985 with total page 235 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Truck Tire Inflation Pressure and Axle Load on Flexible and Rigid Pavement Performance written by and published by . This book was released on 1986 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: