Development of cement slurries for self-compacting SIFCON with silica fume using factorial design models
Title: Development of cement slurries for self-compacting SIFCON with silica fume using factorial design models
Author(s): L. Svermova, M. Sonebi, P.J.M. Bartos
Paper category : conference
Book title: International RILEM Symposium on Self-Compacting Concrete
Editor(s): O. Wallevik and I. Nielsson
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 741 - 752
Total Pages: 12
Nb references: 18
Abstract: In this study, self-compacting fibre reinforced concrete with a high fibre content was developed with slurry infiltrated fibre concrete (SIFCON). The SIFCON was developed with 10% of steel fibres which are infiltrated by self-compacting cement slurry without any vibration. Traditionally, the infiltration of the slurry into the layer of fibres is carried out under intensive vibration.
A two-level fractional factorial design was used to optimise the properties of cement-based slurries with four independent variables, such as dosage of silica fume, dosage of superplasticiser, sand content, and water/cement ratio (W/C). Rheometer, mini-slump test, Lombardi plate cohesion meter, J-fibre penetration test, and induced bleeding were used to assess the behaviour of fresh cement slurries. The compressive strengths at 7 and 28 days were also measured. The statistical models are valid for slurries made with W/C of 0.40 to 0.50, 50 to 100% of sand by mass of cement, 5 to 10% of silica fume by mass of cement, and SP dosage of 0.6 to 1.2% by mass of cement. This model makes it possible to evaluate the effect of individual variables on measured parameters of fresh cement slurries. The proposed models offered useful information to understand trade-offs between mix variables and compare the responses obtained from various test methods in order to optimise self-compacting SIFCON.
Online publication: 2003-08-21
Publication type : abstract_only
Public price (Euros): 0.00