Properties of flowing concrete and self-compacting concrete with high-performance superplasticizer

Title: Properties of flowing concrete and self-compacting concrete with high-performance superplasticizer
Author(s): R. Sri Ravindrarajah, F. Farrokhzadi, A. Lahoud
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: 432 - 441
Total Pages: 10
Nb references: 2
Language: English

Abstract: Flowing concrete (FC) and Self-Compacting concrete (SCC) are currently produced with sufficient amount of superplasticiser. However, it must be emphasized that flowing concrete need not to have the self-compacting capability. FC can also produced by having excess amount of water in the mix without any superplasticiser. Such a mix is prone to high bleeding and segregation. This paper discusses the results of an experimental investigation into the properties of flowing concrete and self-compacting concrete mixes having varying dosage of high-performance superplasticer. The properties investigated are workability, bleeding capacity, segregation potential, compressive and tensile strengths, and drying shrinkage. Flowing concrete had 465 kg/m3 of cement whereas the self-compacting concrete consisted of 350 and 135 kg/m3 of cement and fly ash, respectively. The workability was assessed using slump flow and box-differential height tests. The bleeding capacity for the flowing concrete was higher than that for the self-compacting concrete. The strength of both concrete types was found to increase when vibration was employed at the time of moulding of test specimens and the effect of vibration in strength was significant at later ages. Drying shrinkage was influenced by the mix compositions and superplasticiser dosage.

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