Show utilization OF BLAST FURNACE SLAG IN ROAD improvement technical series bulletin missouri school of mines rolla mo by charles E bardsley bcd associate professor of civil engineering this bulletin contains pages an and d 17 illustrations 8 tables 39 pages of descriptive matter matter and a bibliography of references copies of this paper may be obtained on application to the librarian of the missouri school of mines or to the author address requests on letterheads ter heads this work was undertaken by the author as a dissertation in partial fulfillment for the degree of doctor of science under the national slag association fellowship in highway engineering 6 and under the direct supervision of dr arthur H blanchard professor of highway eng engineering inee and highway transport at the university of michigan reave leave of absence having b been granted the author from the university oi of missouri for the year 1926 the latter institution through its school of mines having printed the paper in abstract form professor bardsley follows the discussion on the nature and purpose of the investigation with his chapter I 1 which gives a resume of the history manufacture and uses of slag as a structural material he sketches the history of the uses of slag from the earliest roman times through germany england and other countries in europe and the orient to its present uses in the united states A concise description of the manufacture of slag is taken up from the processes at the blast furnace up to the time it becomes a construction material slag as a structural material is then described and its uses discussed this discussion is concluded by tables summarizing the specifications for slag in highway construction as given in in the specifications of many state highway departments the U S bureau of roads etc dr Bard chapter II 11 discusses tests on blast furnace slag their interpretations and conclusions this portion ti on of the report has been abstracted it is stated that those interested in the 1 actual tests are privileged to examine the full report which contains over pages and is on file in in the library of the graduate school at the university of michigan ann arbor chapter III summarizes on eight pages his conclusions from the tests mentioned and the general study made and recommendations are given for further study where little in information was available A symposium of the tests available in this study are given at the end of the chapter the next 75 pages of the bulletin comprises the extensive bibliographies on blast furnace slag the first being given according to kind of publication and alphabetically arranged and the second consisting almost enair entirely jv of a dai farent series of references chronologically arranged all in all professor bardsley has ably discussed the po pj little ties of a road construction material generally known to engineers and it looks like at least some use ilse has been found for the great slag heaps one sees along ow our hi 00 ways and railroads as one passes through the great pil pig b on 1 I 1 producing cing centers of the nation |