Evaluation of Aggregate Sections at Mn/ROAD - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Evaluation of Aggregate Sections at Mn/ROAD write by Gregory D. Johnson. This book was released on 2000. Evaluation of Aggregate Sections at Mn/ROAD available in PDF, EPUB and Kindle. 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.
An Evaluation of Aggregate and Chip Seal Surfaced Roads at Mn/Road
An Evaluation of Aggregate and Chip Seal Surfaced Roads at Mn/Road - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook An Evaluation of Aggregate and Chip Seal Surfaced Roads at Mn/Road write by Erland O. Lukanen. This book was released on 1997. An Evaluation of Aggregate and Chip Seal Surfaced Roads at Mn/Road available in PDF, EPUB and Kindle.
Mechanistic-empirical Evaluation of the Mn/Road Low Volume Road Test Sections
Mechanistic-empirical Evaluation of the Mn/Road Low Volume Road Test Sections - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Mechanistic-empirical Evaluation of the Mn/Road Low Volume Road Test Sections write by Navneet Garg. This book was released on 1998. Mechanistic-empirical Evaluation of the Mn/Road Low Volume Road Test Sections available in PDF, EPUB and Kindle. This study utilized I DOT mechanistic-empirical (M-E) procedures and Mn/ROAD low-volume road (LVR) data and information to verify/refine/modify analysis and design concepts and procedures for L VR flexible pavements. The Mn/ROAD L VR flexible pavements include conventional flexible, full-depth asphalt, surface-treatment and aggregate-surface sections. Laboratory test results, field distress measurements, and FWD test data were used to study the affect of granular material quality on pavement performance and deflection response. The results from the rapid shear tests, permanent deformation tests and field rutting measurements show that granular material rutting potential can be characterized by a rapid shear triaxial test at 15-psi confining pressure. For conventional flexible pavements, granular material quality did not affect the pavement deflection response, but material quality effects were significant for aggregate-surface and surface-treatment pavements. ILLI-PAVE predicted pavement responses were fairly accurate for sections with thicker asphalt concrete surfaces. The FWD deflection basin parameter AUPP (Area Under Pavement Profile) can be used to predict the strains at the bottom of AC layer. Effect of subgrade type on pavement response and performance was studied. Sandy subgrades showed little or no change in pavement structural response due to spring-thaw effects. For the cohesive subgrade sections, moisture changes and spring-thaw effects increased surface deflections. The study showed that the lOOT LVR flexible pavement mechanistic-empirical design concepts and procedures are valid and adequate.
Composite Pavements and Exposed Aggregate Texturing at MnROAD
Composite Pavements and Exposed Aggregate Texturing at MnROAD - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Composite Pavements and Exposed Aggregate Texturing at MnROAD write by Alexandra Akkari. This book was released on 2012. Composite Pavements and Exposed Aggregate Texturing at MnROAD available in PDF, EPUB and Kindle. This report summarizes the construction and early performance assessment of three composite (new, multi-layer, construction) test cells at the MnROAD: HMA over a recycled aggregate concrete; diamond grind concrete over recycled aggregate concrete; and exposed aggregate concrete over a low cost concrete. The compilation of this report is strictly a MnDOT activity that documents construction and instrumentation of concrete cells at our MnROAD facility and should not be misconstrued for a SHRP 2 activity. Strength, on board sound intensity, sound absorption, friction, texture and international roughness index were tested to better understand the performance of these, pavement types. Results suggest that the exposed aggregate concrete surface does not provide significant noise reduction. Exposed aggregate surfacing can provide more than adequate friction for skid resistance and safety. Overall, however, these two lift concrete pavements proved to address issues such as high cost of virgin aggregates and high trucking costs for areas that don't have quality aggregates to use. Continued monitoring of these test cells will help develop the extensive understanding of composite pavements needed for effective design and accurate service life models.
Gravel Roads
Gravel Roads - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Gravel Roads write by Ken Skorseth. This book was released on 2000. Gravel Roads available in PDF, EPUB and Kindle. 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.
