46. Some durability aspects of fiber reinforced self-compacting concrete

Title: 46. Some durability aspects of fiber reinforced self-compacting concrete
Author(s): V. Corinaldesi, G. Moriconi
Paper category : conference
Book title: 6th International RILEM Symposium on Fibre Reinforced Concretes
Editor(s): M. di Prisco, R. Felicetti and G.A. Plizzari
Print-ISBN: 2-912143-51-9
e-ISBN: 2912143748
Publisher: RILEM Publications SARL
Publication year: 2004
Pages: 555 - 564
Total Pages: 10
Nb references: 10
Language: English

Abstract: In order to produce thin pre-cast elements, a self-compacting concrete was prepared, showing both high mobility through narrow sections and high segregation resistance. When manufacturing these elements, homogenously dispersed steel fibers instead of ordinary steel reinforcing mesh were added to the concrete mixture at a dosage of 10% by weight of cement. An adequate concrete strength class was achieved with a water to cement ratio of 0.40 and the required resistance against segregation was obtained by adding a limestone powder to the mixture at a dosage of 16% by weight of cement. Compression and flexure tests were carried out up to 180 days of wet curing to assess the safety of these thin concrete elements. Moreover, some durability aspects were taken into consideration. Firstly, drying shrinkage tests were carried out for up to 180 days of exposure in a 50% relative humidity environment, in order to evaluate the contribution of steel fibers in counteracting the high concrete strains due to a low aggregate-cement ratio. Secondly, both carbonation and chloride penetration tests were carried out to assess the vulnerability to corrosion of steel fibers.

Online publication: 2004-08-30
Publication type : full_text
Public price (Euros): 0.00