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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Properties and Uses of High-Magnesia
Author(s): Niko Stutterheim
Publication: Journal Proceedings
Appears on pages(s): 1027-1046
Abstract:Some properties of portland blast furnace slag cements, made from slags having from 13 to 20 percent magnesia, are described, in particular those composed of SO percent slag and 50 percent portland cement clinker plus gypsum. Two ways of blending these constituents are: (a) intergrind-the granulated slag , portland cement clinker and bypsum gypsum in one milling process; (b) grinding portland cement clinker plus gypsum) and granulated slag separately and then blending them, e.g., in the concrete mixing operation. Blast furnace slag for this study was derived from three different plants, each of which uses dolomite as fluxing material in its blast furnaces. The composition and properties of slags and of cements made from them are discussed; the effects of dry and wet grinding of slag, of fineness of grind, and of portland cement content were determined experimentally. Autoclave expansion results were invariably low. The performance of concrete made with these cements is given in respect to workability, shrinkage, dynamic modulus of elasticity, Poisson’s ratio, and compressive and flexural strengths. Values for a portland cement concrete are given for comparison. The results show that the slag cements have good cementitious properties. No correla-tion between compressive strength and any of the com-monly-used hydraulic indices could be found. Some examples are given of full-scale constructional application of portland blast furnace slag cements made from high-magnesia slags.
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