The Institute of Industrial Research of Washington, and organization . apparatus, a motor-drivenductility machine, a motor-driven extractor for bituminousaggregates, an Ofl^ce of Public Roads melting point ap-paratus, viscosimeter, flash and fire testers, a cold chamber,an oven for volatilization tests equipped with a gas regu-lator, hot plates, a sulphur determination apparatus, andhot and cold extraction apparatus. In addition, it is wellequipped with glass, porcelain, platinum and iron ware,and reagents for the usual chemical work. 21 In this laboratory petroleum and petroleum pr
The Institute of Industrial Research of Washington, and organization . apparatus, a motor-drivenductility machine, a motor-driven extractor for bituminousaggregates, an Ofl^ce of Public Roads melting point ap-paratus, viscosimeter, flash and fire testers, a cold chamber,an oven for volatilization tests equipped with a gas regu-lator, hot plates, a sulphur determination apparatus, andhot and cold extraction apparatus. In addition, it is wellequipped with glass, porcelain, platinum and iron ware,and reagents for the usual chemical work. 21 In this laboratory petroleum and petroleum products^tars and tar products, creosoting oils, asphalts, bituminousemulsions, bituminous aggregates and all other types ofchemical road and paving materials, roofing materials, rub-ber, etc., are examined and tested. Chemical examina-tions of rocks, clays, cement, etc., are also made here, andresearches conducted on improvements in industrial prod-ucts and processes and the utilization of waste products forroad purposes. This Division of the Institute is under the supervision. Extraction Hood—Bitumen Laboratory of Mr. Prevost Hubbard, who was formerly Chief Chem-ist of the Office of Public Roads, United States Depart-ment of Agriculture. Mr. Hubbard is the author ofDust Preventives and Road Binders and of many otherpublications on similar subjects. He has had wide ex-perience in the examination and use of all types of roadand paving materials, and has been engaged as lecturer onengineering chemistry in the new post-graduate course inhighway engineering at Columbia University. 22 Although the Division Avas the last one organized, a con>siderable amount of work has already been investigations have been conducted for the As-^sociation of American Portland Cement Manufacturers,the results of which will become available to the publicfrom time to time. Among the problems now being stud-ied are methods of preventing damage to Portland cementconcrete by salt
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1912
