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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: Use of Blast Furnace Slag as Mining Fill
Author(s): J. Metso, S. Makinen,
and E. Kajaus
Publication: Special Publication
Appears on pages(s): 1111-1122
Keywords: backfilling: binders (materials);
blended cements; compressive strength; mines
blast furnace slag;
Abstract:The investigation was carried out by using different amounts of blast furnace slag in blended cements. The slag content of the binder varied from 0 % to 100 % of the weight of the cement. The cement-aggregate ratio in the experiments was 1:15 and the water-cement + slag ratio was 5.9. The compressive strength of the mining-fill-concrete was determined at the age of 28, 91 and 182 days. The specimens were cured at both +8 OC and a t +20 oC. The optimum cement content in the binder when granulated slag was used, was 10 % at both temperatures. Using pelletized slag, the optimum cement content in binding agent was, at +8 oC, 30 %, and at +20 oC, 10 % of the weight of blended cement. At lower temperatures the finer slag gave higher compressive strength results while at the temperature of 20 ‘C no increase in compressive strength was observed.
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