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Dust Preventives And Road Binders (Paperback)
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Dust Preventives And Road Binders (Paperback)
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PREFACE THE object of this book is primarily to furnish road
engineers with a working knowledge of the characteristic properties
of dust preventives and road binders now in use, and to develop
certain fundamental principles relative to their selection and
application. During the past few years there has been a rapidly
growing demand for such information, which has so far been met in a
not altogether satisfactory manner. The subject of dust prevention
and road preservation is at present in a transitional state, and
there is unquestionablymuch yet to be learned regarding the effect
of certain properties of road binders upon the results obtained in
practice. It is hoped, however, that thisworkmay serve as a basis
for further development and that it will prove of some assistance
to those who are interested in the use of such materials. The
conclusions as presented are based upon experience which the author
has acquired both in the laboratory and in the field in the past
five years of his service with the United States Office of Public
Roads. During his connection with this office he has had under his
personal supervision the examination of practi- cally all varieties
of road binders and their use under varying conditions in many
parts of the United States. Throughout this book the mention of
trade names as applied to the results of examination of road
binders has for the most part been purposely avoided for the reason
that different lots of these products have not as a rule shown
definite and uniform character- istics. The ideas of producers,
with reference to the manufacture of their materials, are
undergoing a process of evolution, and in spite of the present lack
of uniformity it must beadmitted that a general tendency is being
exhibited toward the improvement of these materials. The author
here wishes to express his indebtedness to Mr. L. W. Page, Dr. A.
S. Cushman and Mr. C. S. Reeve for their kind assistance and advice
in the preparation of this book, and also to those authors,
hereafter referred to, from whose works he has quoted. WASHINGTON,
D. C., February i, 1910. PREVOST HUBBARD. TABLE OF CONTENTS Chapter
Page I. DUST PREVENTION AND ROAD PRESERVATION i II. CLASSIFICATION
OF DUST PREVENTIVES AND ROAD BINDERS 27 III. INORGANIC DUST
PREVENTIVES AND ROAD BINDERS 39 IV. INORGANIC DUST PREVENTIVES AND
ROAD BINDERS continued .... 72 V. ORGANIC NON-BITUMINOUS DUST
PREVENTIVES AND ROAD BINDERS 103 VI. HYDROCARBONS 112 VII. BITUMENS
EMPLOYED AS DUST PREVENTIVES AND ROAD BINDERS.. 131 VIII. PETROLEUM
AND PETROLEUM PRODUCTS 143 IX. SEMI-SOLID AND SOLID NATIVE BITUMENS
178 X. APPLICATION OF PETROLEUM AND ASPHALTIC MATERIALS 198 XL TARS
AND TAR PRODUCTS 229 XII. THE APPLICATION OFTAR AND CONSTRUCTION OF
BITUMINOUS MAC- ADAM 275 XIII. THE EXAMINATION OF BITUMINOUS ROAD
MATERIALS AND INTER- PRETATION OF RESULTS 324 XIV. METHODS OF
TESTING BITUMINOUS ROAD MATERIALS PROPOSED OR ADOPTED BY AMERICAN
SOCIETIES 373 XV. SELECTION OF DUST PREVENTIVES AND ROAD BINDERS
384 APPENDIX 400 vii DUST PREVENTIVES AND ROAD BINDERS CHAPTER I.
DUST PREVENTION AND ROAD PRESERVATION. Introduction. The prevention
or suppression of road dust and the preservation of roads are
undoubtedly two of the most important problems which to-day
confront road engineers. Pub- lic attention in these matters has
been aroused to such an extent that a demand for less dusty and
more lasting roads than those of thepast is becoming more insistent
every day...
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