Title: Self-Compacting Concrete - modelled as a Bingham Composite

Author(s): Lauge Fuglsang Nielsen

Publication: NCR

Volume: 39

Issue: 1

Appears on pages(s): 1-13

Keywords: Self-Compacting Concrete, Bingham Composite

DOI:

Date: 6/15/2012

Abstract:
A method is developed by which the well-known Bingham description of flow in homogeneous liquids with yield strength is generalized to apply also for composite Bingham materials.In the present context such materials are defined as Bingham materials mixed with very stiff particles of known shape distributions. Two simple shape distributions are considered in details: A mixture of uni-shaped particles – and a mixture of double-shaped particles. For practice the composite aspects of a generalised Bingham description is a major advantage. Only a few parameters are needed to describe the Bingham behaviour at any composition of the composite considered. Bingham methods normally used need experimental calibration for any new composition. In building materials technology a composite analysis is of relevance for the description of fresh self-compacting concretes (SCC). In a special section of the paper some potentials of the theory developed are demonstrated on some aspects of materials design of SCC.