Title:
Influence of Ultra-Fine Particle-Type on Properties of Very High-Strength Concrete
Author(s):
S. Rols, M. Mbessa, J. Ambroise, and J. Pera
Publication:
Symposium Paper
Volume:
186
Issue:
Appears on pages(s):
671-686
Keywords:
mineral admixtures; shrinkage; strength; superplasticizers; workability
DOI:
10.14359/5584
Date:
5/1/1999
Abstract:
Very-high strength concrete (>100 MPa) has been developed using different types of ultra-fine particles: silica fume, ground granulated blast furnace slag, metakaolin, and cristobalite. The effect of the type of ultra-fine particle on some engineering properties of concrete has been investigated: compressive strength, loss of workability and plastic shrinkage. The highest level of strength (120 MPa) was obtained using either 20% slag, or 10% metakaolin, in addition to cement. The workability was maintained for one hour when slag or cristobalite were presenting the mixture. The tests undertaken on plastic shrinkage pointed out that very-high strength concrete developed high plastic shrinkage, specially when pozzolans were used. The use of slag does not affect the plastic shrinkage.