Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"long-term pavement performance"”.
-
Validating the empirical distress prediction models within the AASHTOWare Pavement Mechanistic-Empirical Design, using Tennessee pavement performance data from the Long Term Pavement Performance database
The Mechanistic-Empirical Pavement Design Guide (MEPDG) represents a recent pavement design approach, developed to address the shortcomings of the 1993 AASHTO Guide for Design of Pavement Structures. The Pavement Mechanistic-Empirical Design (PMED) software is set to operationalize the …
-
Mechanistic-Empirical Modeling of Permanent Deformation in Asphalt Concrete Layers
… traffic, climate and materials using accelerated pavement testing and long-term pavement performance studies. The mechanistic-empirical pavement design guide (M E PDG), the incremental-recursive mechanistic-empirical CalME model (CalME), and the PErmanent Deformation of asphalt concrete layer for …
-
Cracking potential of short- and long-term aged binder with various levels of ABR
… is widely accepted that using reclaimed asphalt pavement (RAP) and recycled asphalt shingles (RAS) could improve the sustainability of asphalt concrete (AC), in terms of cost savings and environmental factors. This should be only valid when short- and long-term pavement performance are not …
-
Laboratory and Field Evaluation of Two Warm-Mix Additives in Connecticut and Validation of an Alternative Moisture Susceptibility Test
… first official state Warm-Mix Asphalt (WMA) pavement project in Connecticut was constructed between July 20th and 22nd, 2010 and it involved three experimental sections, i.e. one section with a conventional HMA (control section) and two WMA sections with different technologies, wax and foamed …
-
Influence of subgrade improvement and non-uniformity on pavement performance
… fly ash increases capacity ensuring long term pavement performance. Addition of self-cementing fly ash increases the consolidated shear strength about five times. The second project shows construction operations and field results proving that stabilization of limestone screenings is …
-
Early-age behavior of CRCP and its implications for long-term performance
Continuously Reinforced Concrete Pavement (CRCP) is the most widely used rigid pavement type in Texas. The advantages of CRCP over other rigid pavement types include the absence of transverse contraction joints. With the increased use of CRCP, a vast amount of information has been collected on …
-
Preliminary Study of Highway Pavement and Materials
… and other factors on fatigue cracking using Long-Term Pavement Performance data, (b) fracture properties of asphalt concrete in a semicircular bend (SCB) test using a noncontact camera and crosshead movement, and (c) hot applied modified-binder-chip-seal field performance in California. The …
-
Cracking and Roughness of Asphalt Pavements Constructed Using Cement-Treated Base Materials
… surfaces. Cracking may then cause increased pavement roughness and lead to poor ride quality. The overall purpose of this research was to utilize data collected through the Long-Term Pavement Performance (LTPP) program to investigate the use and classification of CTB layers and evaluate the …
-
Model based pavement-vehicle interaction simulation for life cycle assessment of pavements
… true for the roadway Network and the design of pavements in it. Vehicle fuel consumption required to overcome resisting forces due to pavement-vehicle interaction (PVI) is an essential part of life-cycle assessment (LCA) of pavement systems. These PVIs are intimately related to pavement …
-
Long-Term Modelling of Composite Pavement Performance
The rehabilitation of rigid (concrete) pavements with the placement of an asphalt overlay is a common maintenance technique, which results in a structure known as a composite pavement. The most common form of distress in this type of pavement is reflection cracking which can be due to traffic …
-
Modelling the Flushing Mechanism of Thin Flexible Surface Pavements
… the occurrence of flushing of chip seal pavements. The research aimed to determine the effects of volumetric properties of chip seal surfaces on flushing, focusing on the relationship between air voids and flushing initiation. Additionally, the research aimed to develop a pavement …
-
THERMAL FATIGUE DAMAGE OF ASPHALT PAVEMENT
… develops at the bottom of AC layer of an asphalt pavement. Some localized damages occur in the material at minute-scale due to this developed tensile strain. These damages cause decrease in stiffness (E) of AC. Damage caused by a single vehicle is small. However the accumulated damage is not small …
-
Evaluation of field performance of fine-graded hot mix asphalt on Illinois' roadways
… than a fine-graded mix. Fine-graded mixes were determined to be tender mixes due to the inclusion of natural sand as the main fine aggregate. However, manufactured sand, which has a higher angularity than natural sand, is the main fine aggregate utilized in hot mix asphalt at this time. …
-
Soft Computing-based Life-Cycle Cost Analysis Tools for Transportation Infrastructure Management
… analysis algorithm for comparing and selecting pavement maintenance, rehabilitation and reconstruction (MR&R) policies. To enhance the traditional probabilistic LCCA model, the fuzzy-logic-based model is then incorporated into the risk analysis process. A fuzzy logic approach for determining the …
-
Characterization of traffic load and local calibration of the MEPDG for New Mexico
In the Mechanistic-Empirical Pavement Design Guide (MEPDG), traffic loading is more complex and precise than in the old AASHTO 1993 Guide. Traffic load in MEPDG is characterized by a larger number of traffic inputs such as Annual Average Daily Truck Traffic (AADTT), traffic growth, traffic …
-
Effects of Reclaimed Asphalt Pavement on Mechanical Properties of Base Materials
<p>Reuse of reclaimed asphalt pavement (RAP) in the full-depth recycling (FDR) process is a cost-effective and environmentally responsible method of asphalt pavement reconstruction. Although FDR has been used for several years in some locations, the effect of RAP on the mechanical properties of …
-
Flexible Pavement Rut Depth Modeling For Different Climate Zones
<p>Pavement rutting is one of the most important types of pavement distress that affect road safety and ride quality. Therefore, the primary objective of this study was to develop pavement rutting empirical models for different climate zones to predict pavement rutting on granular base based on …
-
Wheel Path Wandering Based On Field Data
<p>The position and width of wheel path on a pavement lane is an important consideration in conducting pavement distress survey, especially for distinguishing longitudinal cracking from fatigue cracking. Currently, the widely used wheel path definition is derived from the LTPP distress manual with …
-
Machine Learning Approaches for Improving Construction Materials and Pavement Systems
… the development of optimized construction and pavement materials that are cost-effective, sustainable, resilient, and long-lasting. The conventional experimental design approaches to designing construction materials and assessing pavement performance are time-consuming, expensive, and unable to …
-
CHARACTERIZATION OF CRUSHED PORTLAND CEMENT CONCRETE RUBBLE AGGREGATE FOR URBAN ROADS
… that the unit costs of providing conventional pavement structures will continue to increase in Saskatoon. Presently, the primary conventional road building materials include well graded granular base material, subbase, crushed rock and a wearing surface of either conventional hot mix asphalt …