Natural Rock Asphalts And Bitumens PDF Download

Excerpt from Natural Rock Asphalts and Bitumens: Their Geology, History, Properties and Industrial Application The entire absence of a modern English work upon the materials that will be considered in the following pages is almost inexplicable. Beyond occasional articles in the technical journals and the necessarily biased pamphlets of the producer, manufacturer or seller, no English literature having reference to these most valuable products is to be found until we go back for a space of nearly twenty years, a period during which much advance has been made in the production and the use of these articles, fresh deposits have been uncovered and worked, many fallacies have been exposed and extensive chemical research has been made in them. This being so, it is hoped that the appearance of this volume may be regarded as opportune, particularly so since the past year(1912), although not actually celebrated as such, was the bicentenary of the re-discovery of the use of rock asphalt for constructional and waterproofing work. As one who is daily in touch with the various materials about to be mentioned, the writer is aware how much the want of such a work is felt by those who, whilst they are desirous of obtaining a deeper and clearer insight into the production, properties, and uses of these articles, find that such knowledge is inaccessible, owing to the lack of any recent English work dealing with them. The idea of the writer, therefore, is to fill this want in the following pages, and, bearing in mind the difficulties that he himself has had to overcome, as well as the problems that have been placed before him in his position as advisory expert on these materials, it has been his endeavour to keep all matters as clear and as lucid as possible. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.