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Author: Soohyok Im Publisher: ISBN: Category : Pavements, Asphalt Languages : en Pages : 0
Book Description
"This guideline describes procedures for selecting and obtaining representative samples and the laboratory mix design procedures for cold in-place recycling (CIR) using the indirect tensile strength (IDT) test."--Page 1.
Author: Soohyok Im Publisher: ISBN: Category : Pavements, Asphalt Languages : en Pages : 0
Book Description
"This guideline describes procedures for selecting and obtaining representative samples and the laboratory mix design procedures for cold in-place recycling (CIR) using the indirect tensile strength (IDT) test."--Page 1.
Author: Soohyok Im Publisher: ISBN: Category : Pavements, Asphalt Languages : en Pages : 0
Book Description
An extensive literature review on cold in-place recycling (CIR) mixture designs and requirements along with laboratory testing and pavement performance prediction was conducted in this project. Based on the findings and results from prior tasks, this document shows the recommended CIR mixture design requirements, and the recommended mixture testing for quality control, respectively. While this project's activities focused primarily on materials for CIR, based on the literature and the findings in this project, it should also be appropriate for cold central plant recycled mixtures.
Author: Kamran Majidzadeh Publisher: ISBN: Category : Low-volume roads Languages : en Pages : 126
Book Description
This report presents a study initiated in 1984 to develop specification guidelines and mix design recommendations and to obtain performance data on cold-mix recycling projects in Ohio. Future investment planning was the motivation for the Ohio Department of Transportation to consider cold-mix recycling of local roads as a maintenance alternative. Two mainline, low volume roads and one shoulder pavement were selected for this study. Documentation and evaluation of the projects are discussed generally in two parts. The first part includes the site selection criteria, pre-construction evaluation, mix designs, construction specifications and construction monitoring. The second part discusses performance evaluation through field inspection, data collection and laboratory evaluation of material properties.
Author: Jon A. Epps Publisher: Transportation Research Board ISBN: 9780309049115 Category : Technology & Engineering Languages : en Pages : 116
Book Description
This synthesis will be of interest to pavement designers, construction engineers, and others interested in economical methods for reconstructing or rehabilitating bituminous pavements. Information is provided on the processes and procedures used by a number of states to recycle asphalt pavements in place without application of heat. Since 1975 a growing number of state highway agencies have reconstructed or rehabilitated asphalt pavements by recycling the old pavement in place. This report of the Transportation Research Board describes the processes used for cold in-place recycling, including construction procedures, mix designs, mixture properties, performance, and specifications.
Author: Hosin David Lee Publisher: ISBN: Category : Foamed materials Languages : en Pages : 250
Book Description
Asphalt pavement recycling has grown dramatically over the last few years as a viable technology to rehabilitate existing asphalt pavements. Iowa's current Cold In-place Recycling (CIR) practice utilizes a generic recipe specification to define the characteristic of the CIR mixture. As CIR continues to evolve, the desire to place CIR mixture with specific engineering properties requires the use of a mix design process. A new mix design procedure was developed for Cold In-place Recycling using foamed asphalt (CIR-foam) in consideration of its predicted field performance. The new laboratory mix design process was validated against various Reclaimed Asphalt Pavement (RAP) materials to determine its consistency over a wide range of RAP materials available throughout Iowa. The performance tests, which include dynamic modulus test, dynamic creep test and raveling test, were conducted to evaluate the consistency of a new CIR-foam mix design process to ensure reliable mixture performance over a wide range of traffic and climate conditions. The "lab designed" CIR will allow the pavement designer to take the properties of the CIR into account when determining the overlay thickness.
Author: Hosin David Lee Publisher: ISBN: Category : Asphalt emulsion mixtures Languages : en Pages : 138
Book Description
The previous research performed laboratory experiments to measure the impacts of the curing on the indirect tensile strength of both CIR-foam and CIR-emulsion mixtures. However, a fundamental question was raised during the previous research regarding a relationship between the field moisture content and the laboratory moisture content. Therefore, during this research, both temperature and moisture conditions were measured in the field by embedding the sensors at a midpoint and a bottom of the CIR layer. The main objectives of the research are to: (1) measure the moisture levels throughout a CIR layer and (2) develop a moisture loss index to determine the optimum curing time of CIR layer before HMA overlay. To develop a set of moisture loss indices, the moisture contents and temperatures of CIR-foam and CIR-emulsion layers were monitored for five months. Based on the limited field experiment, the following conclusions are derived: The moisture content of the CIR layer can be monitored accurately using the capacitance type moisture sensor. The moisture loss index for CIR layers is a viable tool in determining the optimum timing for an overlay without measuring actual moisture contents. The modulus back-calculated based on the deflection measured by FWD seemed to be in a good agreement with the stiffness measured by geo-gauge. The geo-gauge should be considered for measuring the stiffness of CIR layer that can be used to determine the timing of an overlay. The stiffness of CIR-foam layer increased as a curing time increased and it seemed to be more influenced by a temperature than moisture content. The developed sets of moisture loss indices based on the field measurements will help pavement engineers determine an optimum timing of an overlay without continually measuring moisture conditions in the field using a nuclear gauge.
Author: F. Pacheco-Torgal Publisher: Woodhead Publishing ISBN: 0128189827 Category : Technology & Engineering Languages : en Pages : 424
Book Description
Eco-efficient Pavement Construction Materials acquaints engineers with research findings on new eco-efficient pavement materials and how they can be incorporated into future pavements. Divided into three distinctive parts, the book emphasizes current research topics such as pavements with recycled waste, pavements for climate change mitigation, self-healing pavements, and pavements with energy harvesting potential. Part One considers techniques for recycling, Part Two reviews the contribution of pavements for climate change mitigation, including cool pavements, the development of new coatings for high albedo targets, and the design of pervious pavements. Finally, Part Three focuses on self-healing pavements, addressing novel materials and design and performance. Finally, the book discusses the case of pavements with energy harvesting potential, addressing different technologies on this field. - Offers a clear and concise lifecycle assessment of asphalt pavement recycling for greenhouse gas emission with temporal aspects - Applies key research trends to green the pavement industry - Includes techniques for recycling waste materials, the design of cool pavements, self-healing mechanisms, and key steps in energy harvesting
Author: Soohyok Im
Author: Soohyok Im
Author: Soohyok Im
Author: Kamran Majidzadeh
Author: Asphalt Institute
Author: Jon A. Epps
Author: Harold W. Muncy
Author: Asphalt Institute
Author: Hosin David Lee
Author: Hosin David Lee
Author: F. Pacheco-Torgal