Author: Hosin David Lee
Publisher:
ISBN:
Category : Foamed materials
Languages : en
Pages : 116
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Book Description
This study evaluates one of the recycling techniques used to rehabilitate pavement, called Cold In-Place Recycling (CIR). CIR is one of the fastest growing road rehabilitation techniques because it is quick and cost-effective. The document reports on the current practice of CIR with emulsion, presents a literature review of research on foamed asphalt, discusses the foaming experiment, presents a field data collection and compaction study, and describes the determination of mix design parameters for CIR with foamed asphalt.
Author: Hosin David Lee
Publisher:
ISBN:
Category : Foamed materials
Languages : en
Pages : 250
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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:
Publisher:
ISBN:
Category : Low-volume roads
Languages : en
Pages : 436
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Book Description
Author:
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 64
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Book Description
Author: F. Pacheco-Torgal
Publisher: Woodhead Publishing
ISBN: 0128189827
Category : Technology & Engineering
Languages : en
Pages : 424
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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: Asphalt Institute
Publisher:
ISBN: 9781934154175
Category : Asphalt
Languages : en
Pages : 102
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Book Description
Author:
Publisher:
ISBN:
Category : Roads
Languages : en
Pages : 284
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Book Description
Author: Hosin David Lee
Publisher:
ISBN:
Category : Asphalt emulsion mixtures
Languages : en
Pages : 138
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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: National Research Council (U.S.). Transportation Research Board
Publisher:
ISBN:
Category : Bridges
Languages : en
Pages : 292
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Book Description
The proceedings contain papers presented at the Ninth Maintenance Management Conference. The papers are organized in eight parts as follows: (PART 1) Pavement Maintenance; (PART 2) Maintenance Safety and Winter Operations; (PART 3) Roadside Maintenance; (PART 4) Bridge Maintenance; (PART 5) Maintenance Research; (PART 6) Environmental Maintenance; (PART 7) Maintenance Equipment; and (PART 8) Maintenance Management.
Author: Rajib B. Mallick
Publisher: CRC Press
ISBN: 1420060317
Category : Technology & Engineering
Languages : en
Pages : 538
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Book Description
Pavements are omnipresent in our society. From roads and airports to parking lots and driveways, every civil engineering project requires applications of this complex subject. Pavement Engineering covers the entire range of pavement construction, from soil preparation to structural design and life-cycle costing and analysis. It links the concepts of mix and structural design, while also placing emphasis on pavement evaluation and rehabilitation techniques. State-of-the-art content introduces the latest concepts and techniques, including ground-penetrating radar and seismic testing. The text facilitates a general course for upper-level undergraduates, covering the selection of materials, mix and structural design, and construction. It also provides laboratory and field tests accompanied by a discussion of new and advanced concepts. This unique text prepares the next-generation of engineers with the core principles and application knowledge needed to maneuver in the ever-expanding pavement engineering industry.
