Natural Aggregates in Structural Lightweight Concreteby David J. Akers, Southern California Soil &, Testing Inc, United States,
Robert W. Floyd, Southern California Soil &, Testing Inc, United States,
Abstract: Pumice and scoria have been used in structural concrete since the days of the Roman Empire. Records for the past five decades show minimal use of these materials in structural concrete in this country. As rising energy costs have driven up the cost of manufactured lightweight aggregates, more and more attention is being focused on the readily available, naturally occuring lightweight aggregates. A total of eleven aggregate sources providing nearly one hundred mix design results were reviewed. However, due to limited data, only the data for eight (two pumice and six scoria) are reported.
Subject Headings: Aggregates | Concrete structures | Structural concrete | Material properties | Construction materials | Lightweight concrete | Materials processing
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