Metamorphism of Portland Cement (Paperback)

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1912 edition. Excerpt: ...ing different aggregates 204 Concretes containing different cements 205 Effect of the direction of flow through concrete 20(3 Quality of water at first added 208 Compressive strength of neat cements gaged with various solutions 208 Effect of gaging with various solutions upon the strength of i mortars afterward stored in water 210 Effect of gaging grout with rock waters 211 Quality of water that may subsequently come into contact with the system 213 Theoretical considerations 213 Effect of storage in various saline solutions upon the strength of mortar 214 Effect of storage in rock water upon the strength of lean cement mortars 216 Summary of experimental results 218 General conclusions 219 Bibliography 220 PART I INTRODUCTION The important field of investigation covering the changes which take place in the setting and hardening of Portland cement and in Portland cement which may be considered to have attained the greater part of its maximum hardness calls for the services of experts in various branches of science. Many of the general problems can, as a whole, be relegated to the petrologist and hydrologist; and this paper is an attempt to treat cement as a rock, differing from other rocks only in being artificial, but subject to the same internal and external influences as other components of the earths crust. A training in geophysics and geochemistry is, perhaps, the most valuable asset in surveying the field of Portland cement. If no other end is achieved by the following pages, the mere representation of the question as a problem in applied petrology will, it is hoped, help future investigators in a more systematic inquiry. Part I of this paper is devoted to a necessarily brief review of the present status of the subject, and no...