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Potential for utilizing industrial wastes and by-products in construction of transportation facilities in Virginia : final report.
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    This report constitutes: (a) a survey to determine the availability in Virginia of waste materials or by-products that may have a potential for use in highway construction, (b) a summary of published literature concerning the use of waste materials in highway construction, and (c) a review of current and previous experimental projects and research in Virginia involving the use of waste materials. The types of wastes discussed include mining and quarry wastes; metallurgical wastes; industrial wastes, especially fly ash and bottom ash; municipal wastes including incinerator residues, building rubble, asphalt pavement, portland cement concrete pavement, discarded automobile tires, old lubricating oils, and sewage sludge; and agricultural and forestry wastes. It is concluded that while a number of solid waste products are technologically suitable for use in highway construction, conditions in Virginia are such that the use of such products seldom provides an economical alternative to the use of conventional aggregates. There is a possibility that some wastes can be successfully utilized as a means of avoiding environmentally undesirable accumulations. However, such accumulations do not now appear to be a serious concern within the state. Because of the continuing development of the technology of using fly ash and other products from coal combustion, the report recommends continuing efforts by Virginia to develop suitable specifications and procedures for utilizing such products especially fly ash. It is also recommended that increased experimentation with recycling both asphalt and portland cement concrete pavements be undertaken.
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