Utilization of Crumb Rubber Modifier in Asphalt Concrete Mixtures
Utilization of Crumb Rubber Modifier in Asphalt Concrete Mixtures

Author: Khaled Saeed

Publisher: LAP Lambert Academic Publishing

Published: 2014-02

Total Pages: 108

ISBN-13: 9783659508066

DOWNLOAD EBOOK

Disposal of waste tires has been known as a serious environmental problem. Since burying tires in landfills is not an easy solution either, highway engineers around the world have tried to incorporate scrap tire rubber in asphalt pavements as a modifier. This book investigate the use of Crumb Rubber Modifier (CRM) as a waste material in modifying the performance of the asphalt concrete mixtures. HMA mixtures characterization in terms of fatigue cracking and rutting resistance was analyzed and evaluated to determine the effects of the crumb rubber on the mixtures' performance. In addition, studying the effect of various environmental effects such as temperature, aging and moisture damage on the mechanical properties of the asphalt concrete mixtures. Several tests were used such as indirect tensile strength, indirect tensile fatigue and static creep test.

Uses of Recycled Rubber Tires in Highways
Uses of Recycled Rubber Tires in Highways

Author: Jon A. Epps

Publisher: Transportation Research Board

Published: 1994

Total Pages: 172

ISBN-13: 9780309053235

DOWNLOAD EBOOK

This synthesis on the use of recycled rubber tires in highways will be of interest to administrators and policy-makers; pavement, materials, geotechnical, environmental, and traffic operations engineers; and research engineers involved with highway design and construction issues. Information is provided on the uses of rubber tires in asphalt paving materials as well as other uses, such as on fills and embankments, for erosion control and on railroad grade crossings. Specifically, information is included which identifies the agencies using or implementing applications for recycled rubber tires and defines the design parameters, technical and construction limitations, performance, costs, benefits, environmental limitations, specifications, and availability. This synthesis of information defines the use of recycled rubber tires in highways and is based on a review of nearly 500 references and on information recorded from state highway agency responses to a 1991 survey of practice. Updates are included for as much of the state practice information possible through 1993. The use of scrap tires for highway applications is dynamic with regard to policy and technical issues. Therefore, the reader should keep in mind that the information presented reflects the best available data at a particular time. The synthesis also identifies current research in the topic area, critical research needs, and legislative issues that affect application and use of recycled rubber tires.

Use of Recycled Chunk Rubber Asphalt Concrete (CRAC) on Low Volume Roads and Use of Recycled Crumb Rubber Modifier in Asphalt Pavements
Use of Recycled Chunk Rubber Asphalt Concrete (CRAC) on Low Volume Roads and Use of Recycled Crumb Rubber Modifier in Asphalt Pavements

Author: Mustaque Hossain

Publisher:

Published: 1995

Total Pages: 112

ISBN-13:

DOWNLOAD EBOOK

The major objective of this project was to formulate a Chunk Rubber Asphalt Concrete (CRAC) mix for use on low volume roads. CRAC is a rubber modified asphalt concrete product produced by the 'dry process' where rubber chunks of 1/2 inch size are used as aggregate in a cold mix with a type C fly ash. The second objective of this project was to develop guidelines concerning the use of rubber modified asphalt concrete hot mix to include: 1) design methods for use of asphalt-rubber mix for new construction and overlay; 2) mix design method for asphalt-rubber; and, 3) test method for determining the amount of rubber in an asphalt-rubber concrete for quality control purposes.

Crumb Rubber Modifier
Crumb Rubber Modifier

Author:

Publisher:

Published: 1993

Total Pages: 302

ISBN-13:

DOWNLOAD EBOOK

Section 1038 of the Intermodal Surface Transportation Efficiency Act of 1991 (ISTEA) contains provisions for each State to begin incorporating scrap tire rubber into their asphalt paving materials. A workshop was developed through the cooperation of highway agencies and the asphalt industry to discuss present procedures and practices for designing and constructing asphalt pavements which incorporate scrap tire rubber (crumb rubber modifier). These workshop notes were prepared from the proceedings of the 13 workshop sessions.

Tire Waste and Recycling
Tire Waste and Recycling

Author: Trevor Letcher

Publisher: Academic Press

Published: 2021-03-25

Total Pages: 652

ISBN-13: 0128206861

DOWNLOAD EBOOK

Tire Waste and Recycling takes a methodical approach to the recycling of tires, providing a detailed understanding on how to manage, process, and turn waste tires into valuable materials and industrial applications. Sections cover fundamental aspects such as tire use, composition, trends, legislation, the current global situation, the possibilities for moving towards a circular economy, lifecycle options, treatment methods, and opportunities for re-use, recycling and recovery. Subsequent sections of the book focus on specific technologies that enable the utilization of waste tires in the development of high value materials and advanced applications. Finally, the future of tire recycling is considered. This is an essential resource for scientists, R&D professionals, engineers and manufacturers working in the tire, rubber, waste, recycling, automotive and aerospace industries. In academia, the book will be of interest to researchers and advanced scientists across rubber science, polymer science, materials engineering, environmental science, chemistry and chemical engineering. Offers systematic coverage of tire recycling, covering composition, lifecycle, processing options, material developments and latest technologies Explains end-of-life-options in detail, considering approaches and methods for reduction, re-use, recycling and recovery Explores key application and product areas for recycled tire materials, from civil engineering, sports and leisure, to roads and transport, construction, automotive, and many more

Use of Waste Materials in Hot-mix Asphalt
Use of Waste Materials in Hot-mix Asphalt

Author: H. Fred Waller

Publisher: ASTM International

Published: 1993

Total Pages: 304

ISBN-13: 0803118813

DOWNLOAD EBOOK

In light of requirements that rubber be mixed with any asphalt used in projects receiving federal aid beginning in 1994, and the general increase in the problem of what to do with waste material, 17 papers from a December 1992 symposium in Miami discuss some of the technical and economic considerati

Design and Construction of Asphalt Paving Materials with Crumb Rubber Modifier
Design and Construction of Asphalt Paving Materials with Crumb Rubber Modifier

Author:

Publisher:

Published: 1992

Total Pages: 128

ISBN-13:

DOWNLOAD EBOOK

This document is a comprehensive overview of the terminology, processes, products, and applications of crumb rubber modifier (CRM) technology. This technology includes any use of scrap tire rubber in asphalt paving materials. In general, CRM technology can be divided into two categories--the wet process and the dry process. When CRM is incorporated into an asphalt paving material, it will modify the properties of the binder (asphalt rubber) and/or act as a rubber aggregate (rubber modified hot mix asphalt). The five concepts for using CRM discussed in the report are McDonald, PlusRide, generic dry, chunk rubber asphalt concrete, and continuous blending asphalt rubber. An experimental work plan for monitoring performance and a stack emission testing program are also included.

AASHTO Guide for Design of Pavement Structures, 1993
AASHTO Guide for Design of Pavement Structures, 1993

Author: American Association of State Highway and Transportation Officials

Publisher: AASHTO

Published: 1993

Total Pages: 622

ISBN-13: 1560510552

DOWNLOAD EBOOK

Design related project level pavement management - Economic evaluation of alternative pavement design strategies - Reliability / - Pavement design procedures for new construction or reconstruction : Design requirements - Highway pavement structural design - Low-volume road design / - Pavement design procedures for rehabilitation of existing pavements : Rehabilitation concepts - Guides for field data collection - Rehabilitation methods other than overlay - Rehabilitation methods with overlays / - Mechanistic-empirical design procedures.

Performance Testing of Asphalt Concrete Containing Crumb Rubber Modifier and Warm Mix Additives
Performance Testing of Asphalt Concrete Containing Crumb Rubber Modifier and Warm Mix Additives

Author:

Publisher:

Published: 2014

Total Pages: 196

ISBN-13:

DOWNLOAD EBOOK

Utilisation of scrap tire has been achieved through the production of crumb rubber modified binders and rubberised asphalt concrete. Terminal and field blended asphalt rubbers have been developed through the wet process to incorporate crumb rubber into the asphalt binder. Warm mix asphalt technologies have been developed to curb the problem associated with the processing and production of such crumb rubber modified binders. Also the lowered production and compaction temperatures associated with warm mix additives suggests the possibility of moisture retention in the mix, which can lead to moisture damage. Conventional moisture sensitivity tests have not effectively discriminated good and poor mixes, due to the difficulty of simulating field moisture damage mechanisms. This study was carried out to investigate performance properties of crumb rubber modified asphalt concrete, using commercial warm mix asphalt technology. Commonly utilised asphalt mixtures in North America such as dense graded and stone mastic asphalt were used in this study. Uniaxial Cyclic Compression Testing (UCCT) was used to measure permanent deformation at high temperatures. Indirect Tensile Testing (IDT) was used to investigate low temperature performance. Moisture Induced Sensitivity Testing (MiST) was proposed to be an effective method for detecting the susceptibility of asphalt mixtures to moisture damage, as it incorporates major field stripping mechanisms. Sonnewarm(TM), Sasobit(TM) and Evotherm(TM) additives improved the resistance to permanent deformation of dense graded mixes at a loading rate of 0.5 percent by weight of the binder. Polymer modified mixtures showed superior resistance to permanent deformation compared to asphalt rubber in all mix types. Rediset(TM) WMX improves low temperature properties of dense graded mixes at 0.5 percent loading on the asphalt cement. Rediset LQ and Rediset WMX showed good anti stripping properties at 0.5 percent loading on the asphalt cement. The American Association of State Highway and Transportation Official's Mechanistic-Empirical Pavement Design Guide (AASHTO MEPDG) software was used to predict long term low temperature performance of the mixtures in various areas of Ontario. Sasobit, Rediset LQ and Rediset WMX gave good 15 years prediction with stone mastic asphalt mixtures but the performance of dense graded mixtures was less satisfactory.