Title: Hydrothermal and Vacuum Saturated Lightweight Aggregate for Pumped Structural Concrete

Author(s): Willaim E. Reilly

Publication: Journal Proceedings

Volume: 69

Issue: 7

Appears on pages(s): 428-432

Keywords: concrete construction; expanded shale aggregates; lightweight aggregate concretes; light-weight aggregates; liquid saturation; mix proportioning; moisture content; pumped concrete; water content; wetting

DOI: 10.14359/11273

Date: 7/1/1972

Abstract:
Describes two methods for saturating lightweight aggregates for use in mixes suitable for pumping. In the hydrothermal method, aggregate at high temperature is immersed in water. In the vacuum saturated method, dry aggregate is evacuated then water introduced to fill the internal voids. Data are presented showing the amount of water absorbed in tests of both methods. Results are also given comparing concretes made with vacuum saturated aggregate and with dry aggregate.