Fracture behaviour of self compacting concrete

Title: Fracture behaviour of self compacting concrete
Author(s): C. Fava, L. Bergol, G. Fornasier, F. Giangrasso, C. Rocco
Paper category : conference
Book title: International RILEM Symposium on Self-Compacting Concrete
Editor(s): O. Wallevik and I. Nielsson
Print-ISBN: 2-912143-42-X
e-ISBN: 2912143713
Publisher: RILEM Publications SARL
Publication year: 2003
Pages: 628 - 636
Total Pages: 9
Nb references: 16
Language: English

Abstract: Self Compacting Concrete (SCC) is a high performance concrete which shows some important advantages in comparison with a conventional vibrated concrete (REF). Is well known that SCC can fill all the formwork spaces without internal vibration, reducing execution times and improving surface finish. The use of SCC leads to an overall costs reduction with improvements in the quality of the structures and construction enviroment. In this work, different tests were done to evaluate (in mortar and concrete phases) fracture and mechanical parameters of two Self Compacted Concrete (SCC) mixes designed using ternary blended cement with further additions of ground granulated blast furnace slag (GGBFS) and limestone filler. These results were compared to a conventional concrete with similar compressive strength and coarse aggregate (maximum size and type). Fracture tests were carried out to determine the fracture energy (three-point bending tests and Brazilian splitting tests). Also, the macroscopic fracture behaviour was modeled by the cohesive crack model with a bilinear softening curve analysis. Additionally, compressive strength, flexural strength and modulus of elasticity were evaluated. The results indicates that the fracture parameters of SCC mixes are similar to the conventional vibrated concrete with similar compressive strength and coarse aggregate.

Online publication: 2003-08-21
Publication type : abstract_only
Public price (Euros): 0.00