Burned Shale and Expanded Slag Concretes With and Without Air-Entraining Admixture

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Title: Burned Shale and Expanded Slag Concretes With and Without Air-Entraining Admixture

Author(s): P. H. Peterson

Publication: Journal Proceedings

Volume: 45

Issue: 10

Appears on pages(s): 165-175

Keywords: no keywords

Date: 10/1/1948

Abstract:
The physical properties of several lightweight aggregateportland cement concretes made with burned shale or expanded slag were investigated at the National Bureau of Standards. Three grades of concrete were made with each aggregate. Air entrainment greater than 20 percent is reported fpr the mixtures leanest in cement, an air-entraining admixture being used to increase the workablity of all but the richest concretes. Compressive, flexural and bond strength data are given as well as resistance to heat transfer, rain penetration, and water penetration by capillaryity. Also included are the coeffcients of thermal expansion, shrinkage, and values for change in length due to wetting and drying.