Excerpt from Effects of Cal as an Accelerator of the Hardening of Portland Cement MixturesWhile a greater part Of the work preliminary to the. Main series of concrete tests deals with the effects of Cal on the early time strengths Of cement mixtures under various Conditions, it also includes miscellaneous tests bearing on questions which might preclude the use of this material with Portland cement, or limit its use to special mixtures or kinds of construction work.Acknowledgment is made to G. M. Williams for assistance in planning the concrete tests, to Watson Davis for assistance in conducting these tests, and to A. B. Peck for the microscopic work.About the PublisherForgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.comThis 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.