Standard and tentative methods of sampling and testing highway materials : recommended by the Second Conference of State Highway Testing Engineers and Chemists, Washington, , Feb 23-27, 1920 . J>\fr<&J-U Washington, D. C. October 10, 1921 STANDARD AND TENTATIVE METHODS OF SAMPLING ANDTESTING HIGHWAY MATERIALS. Recommended by the Second Conference of State Highway Testing Engineers andChemists, Washington, D. C, Feb. 23-27, 1920. CONTENTS. Introduction Tests for non-bituminous road materials. Tests for bituminous road materials Tentative tests 36 .. 62
Standard and tentative methods of sampling and testing highway materials : recommended by the Second Conference of State Highway Testing Engineers and Chemists, Washington, , Feb 23-27, 1920 . J>\fr<&J-U Washington, D. C. October 10, 1921 STANDARD AND TENTATIVE METHODS OF SAMPLING ANDTESTING HIGHWAY MATERIALS. Recommended by the Second Conference of State Highway Testing Engineers andChemists, Washington, D. C, Feb. 23-27, 1920. CONTENTS. Introduction Tests for non-bituminous road materials. Tests for bituminous road materials Tentative tests 36 .. 62 standard methods of sampling. 69 Miscellaneous matter 75 Forms for recording and reprinting results 79 INTRODUCTION. In connection with the administration of Federal appropriationsfor highway construction, conferences have been held from time totime, between representatives of the Bureau of Public Roads andof the various State highway departments, for the purpose of formu-lating policies relative to matters of mutual interest. In accordancewith this general plan, a conference of testing engineers of the Statehighway departments was deemed advisable in order to standardizethe work of t
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectroadmat, bookyear1921
