Title:
Use of Mineral Fines in High Strength Concrete -Water Requirement and
Strength
Author(s):
Y. Yamamoto and M. Kobayashi
Publication:
Concrete International
Volume:
4
Issue:
7
Appears on pages(s):
33-40
Keywords:
cement content: compressive strength
fine aggregates: high-strength concretes: hydration
mineral admixtures: plasticizers: splitting tensile
strength; water content.
DOI:
Date:
7/1/1982
Abstract:
Theoretically, 20 to 30 percent of cement remain: unhydrated forever in high-strength concrete (HSC produced using superplasticizers. An attempt was made to examine the possibility of replacing a part o the unhydrated cement by low-cost mineral fine: without impairing the high-strength characteristic Mineral fines used include fly ash and ground powders of coarse fly ash, quenched blast furnace slag, and inert standard sand. Their replacemen ratios were mostly 15 and 30 percent by volume. Tes results revealed that the fines acted in a favorable way in fresh mixtures of HSC, and their use resulted ir larger water reduction than in regular concrete. About 5 percent of cement in HSC could be replaced by