. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 704 , \Sir Contribution from the Bureau of Public Roads "Vfih -'*->.^ ^\^V*^^ LOGAN WALLER PAGE, Director. Washington, D. C. PROFESSIONAL PAPER. August 30,1918 TYPICAL SPECIFICATIONS FOR NONBITUMINOUS ROAD MATERIALS. By Peevost Hubbard, Chemical Engineer, and Fbank H. Jackson, Jr., Assistant Testing Engineer. CONTENTS. Introduction 1 Specifications 4 Methods of testing 27 Page. Methods of selecting and shipping 35 Detailed table of contents 39 Index of materials and use 40 INTRODUCTION.
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. BULLETIN No. 704 , \Sir Contribution from the Bureau of Public Roads "Vfih -'*->.^ ^\^V*^^ LOGAN WALLER PAGE, Director. Washington, D. C. PROFESSIONAL PAPER. August 30,1918 TYPICAL SPECIFICATIONS FOR NONBITUMINOUS ROAD MATERIALS. By Peevost Hubbard, Chemical Engineer, and Fbank H. Jackson, Jr., Assistant Testing Engineer. CONTENTS. Introduction 1 Specifications 4 Methods of testing 27 Page. Methods of selecting and shipping 35 Detailed table of contents 39 Index of materials and use 40 INTRODUCTION. This publication should be considered as a companion bulletin to "Typical Specifications for Bituminous Road ;^ In it are given a number of typical specifications for the more common nonbituminous materials used in the construction and maintenance of various types of highways. These are grouped mainly according to type of road. In so far as practicable materials of the same class have also been kept together. When a single type of road requires more than one class of nonbituminous material peculiarly suited to that class, all of the materials are treated in the same specification under appropriate subheadings. Thus in specification RC-2, where the requirements for coarse aggregate for concrete base are the same for broken stone or gravel, these materials have been specified to- gether. Also in specifications such as RBC-2, for bituminous con- crete, all of the nonbituminous constituents, including broken stone, sand, and filler, are included. During the summer of 191T a survey was made of stone quarries in certain sections of the country ^ with the primary object of ob- taining data relating to the commercial sizes of broken stone, which would enable the Bureau of Public Roads to recommend a minimum ITT. S. Department of Agriculture Bulletin 691. 2 " Public Roads," vol. 1, No. 2, June, Please note that these images are extracted from scanned
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