01485557

Monograph

http://www.trb.org/Main/Blurbs/169145.aspx

http://www.trb.org/Publications/Blurbs/169145.aspx

Recycled materials and industrial byproducts are being used in transportation applications with increasing frequency. There is a growing body of experience showing that these materials work well in highway applications. This study gathers the experiences of transportation agencies in determining the relevant properties of recycled materials and industrial byproducts and the beneficial use for highway applications. Information for this study was acquired through a literature review, and surveys and interviews with state department of transportation staff. The report will serve as a guide to states revising the provisions of their materials specifications to incorporate the use of recycled materials and industrial byproducts, and should, thereby, assist producers and users in “leveling the playing field” for a wide range of dissimilar materials.The report is presented in eight volumes, the first of which is available in hard copy and on the Internet. The next seven volumes, including this one, are available through the Internet only. This volume provides general information on coal combustion byproducts, production and usage, and basic cost information. A summary of the agency survey responses for current byproducts used in a range of highway applications is also provided. The major coal combustion byproducts are bottom ash, boiler slag, fly ashes, and flue gas desulfurization. A separate section is dedicated to each byproduct and includes summaries of data found for engineering-related physical and chemical properties, environmentally related properties for assessing leaching potential, and historical use and production. Highway applications using any of the byproducts also are summarized. When possible, key engineering properties relevant to each application are also included. An additional byproduct, fluidized bed combustion ash, while not yet used in highway applications, is also discussed in the background section. Separate sections are included for environmental issues, economic issues, and barriers to use associated with the byproducts.

Project 20-05, Topic 40-01

English

61p

2013

NCHRP Synthesis of Highway Practice

Web

Appendices; Figures; References; Tables

Bottom ash; Building materials; Economic impacts; Environmental impacts; Flue gases; Fly ash; Highways; Properties of materials; Recycled materials; Road construction; Slag; Waste products (Materials)

Construction; Environment; Highways; Materials; Pavements; I15: Environment; I35: Miscellaneous Materials; I52: Construction of Pavements and Surfacings

TRIS, TRB, ATRI

Jul 1 2013 8:15AM