The 29th Edition Materials Book contains 421 materials specifications and test methods commonly used in the construction of highway facilities. The specifications have been developed and maintained by transportation departments through participation in AASHTO’s Subcommittee on Materials. In addition, pertinent ASTM specifications approved by member states are included. The book edition is organized in two volumes, Materials and Testing, and each volume has been separated into two books. AASHTO Provisional Standards is also included and contains an additional 42 provisional materials specifications and test methods.
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