An Evaluation of Aggregate and Chip Seal Surfaced Roads at Mn/Road
Author | : Erland O. Lukanen |
Publisher | : |
Total Pages | : 94 |
Release | : 1997 |
Genre | : Aggregates (Building materials) |
ISBN | : |
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Author | : Erland O. Lukanen |
Publisher | : |
Total Pages | : 94 |
Release | : 1997 |
Genre | : Aggregates (Building materials) |
ISBN | : |
Author | : Gregory D. Johnson |
Publisher | : |
Total Pages | : 64 |
Release | : 2000 |
Genre | : Aggregates (Building materials) |
ISBN | : |
This project focuses on the second construction phase of the Minnesota Road Research facility (Mn/ROAD) and evaluates three typical, locally available, surfacing aggregates along with a rollover section from the initial phase for performance. The project results indicate that the adsorption test did not predict the performance of the sections in this experiment. All of the aggregates were characterized as marginal in terms of moisture and frost susceptibility. The project also compared freezing and thawing rates on the aggregate sections to nearby hot mix asphalt (HMA) sections.
Author | : Ken Skorseth |
Publisher | : |
Total Pages | : 112 |
Release | : 2000 |
Genre | : Gravel roads |
ISBN | : |
The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.
Author | : Erol Tutumluer |
Publisher | : CRC Press |
Total Pages | : 1560 |
Release | : 2009-06-15 |
Genre | : Technology & Engineering |
ISBN | : 0203865286 |
Bearing Capacity of Roads, Railways and Airfields focuses on issues pertaining to the bearing capacity of highway and airfield pavements and railroad track structures and provided a forum to promote efficient design, construction and maintenance of the transportation infrastructure. The collection of papers from the Eighth International Conference
Author | : Douglas D. Gransberg |
Publisher | : Transportation Research Board |
Total Pages | : 124 |
Release | : 2010 |
Genre | : Technology & Engineering |
ISBN | : 0309143195 |
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 411: Microsurfacing explores highway microsurfacing project selection, design, contracting, equipment, construction, and performance measurement processes used by transportation agencies in the United States and Canada. Microsurfacing is a polymer-modified cold-mix surface treatment that has the potential to address a broad range of problems on today's highways --
Author | : |
Publisher | : |
Total Pages | : 59 |
Release | : 2015 |
Genre | : Aggregates (Building materials) |
ISBN | : |
Minnesota has a large network of aggregate roads. The majority of the system is maintained by counties and townships. Some of the aggregate roads need to be upgraded with a sealed surface for dust control or to provide a smoother driving experience, as well as for local economic development. Local road officials are often faced with the responsibility of upgrading the roads with a limited budget. Light surface treatments (LSTs) are considered an economical alternative to the conventional upgrade approaches using hot-mixasphalt (HMA) or concrete pavements. The currently used methods in Minnesota for the structural design of LSTs for aggregate roads were originally developed for structural design of flexible pavements. This research evaluated the design methods that can be used to design LSTs for aggregate roads. The methods evaluated include the MnDOT granular equivalent (GE) method and the MnDOT mechanistic-empirical method (MnPave design software), which are used in Minnesota, and the American Association of State Highway and Transportation Officials (AASHTO) flexible pavement design method and South Dakota aggregate road design method, which are practiced in other places in the United States. The results include a discussion of the applicable situations for each method. The research team also conducted a survey that was distributed to the county engineers in Minnesota to document their experiences with LSTs. Recommendations for improving the current design methods when applied to LSTs on aggregate roads are suggested based on the survey results.
Author | : Manoochehr Zoghi |
Publisher | : |
Total Pages | : 270 |
Release | : 2009 |
Genre | : Pavements |
ISBN | : |
The intent of this research project is to identify a wide variety of parameters that influence the performance of pavements treated via chip seals within the State of Idaho. Chip sealing is currently one of the most popular methods of maintenance for paved road surfaces. It entails spraying the pavement surface with asphalt (or "binder") and then immediately covering it with aggregate (or "chips") and using rollers to compress and settle the application. Chip sealing is used to seal non-structural cracks, increase surface friction, and improve ride quality. There are a variety of techniques and formulas ("design methods") for mixing the binder and aggregate used in chip sealing. In Idaho, these design methods lack uniformity: empirical methods are used, based on an informal rule-of-thumb, the experiences of the parties making the chip seal, and the materials that are readily available. This project compares the methods used in Idaho with several different design methods that have been developed in various parts of the world. The project's research focus is a series of laboratory experiments using different binders and aggregates obtained from all six Idaho Transportation Department districts. The results of these experiments have been compiled and analyzed, with the findings included herein. Chief among these findings, it was observed that the ratio of median size to flakiness index of the aggregate exhibits a better correlation with the percentage aggregate retained rather than the least dimension (as used in the commonly used McLeod Design Method). It was also found that the cleanness value of the aggregate is a critical factor for retaining aggregate--i.e., keeping the chips on the treated road surface, rather than breaking free from the binder. This report concludes with a series of seven recommendations for improving chip sealing practice in Idaho, and with a list of eight areas worthy of additional research.
Author | : Scott Shuler |
Publisher | : Transportation Research Board |
Total Pages | : 111 |
Release | : 2011 |
Genre | : Technology & Engineering |
ISBN | : 0309155398 |
TRB's National Cooperative Highway Research Program (NCHRP) Report 680: Manual for Emulsion-Based Chip Seals for Pavement Preservation examines factors affecting chip performance, highlights design and construction considerations, and explores procedures for selecting the appropriate chip seal materials. The report also contains suggested test methods for use in the design and quality control of chip seals. Appendices A to J of NCHRP Report 680 provide further elaboration on the work performed in this project--
Author | : Douglas D. Gransberg |
Publisher | : Transportation Research Board |
Total Pages | : 120 |
Release | : 2005 |
Genre | : Asphalt emulsion mixtures |
ISBN | : 0309097444 |
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 342: Chip Seal Best Practices examines ways to assist in the development and implementation of pavement preservation programs by identifying the benefits of using chip seal as part of a preventive maintenance program and by highlighting advanced chip seal programs in use around the world. The report includes approximately 40 best practices in the areas of chip seal design methods, contract administration, equipment practices, construction practices, and performance measures. According to the report, the increased use of chip seals for maintenance can be a successful, cost-effective way of using preventive maintenance to preserve both low-volume and higher-volume pavements.