135. An experimental research on the uniformity of lightweight self compacting concrete in full scale structural element

Title: 135. An experimental research on the uniformity of lightweight self compacting concrete in full scale structural element
Author(s): R. madandoust, M.M. Ranjbar, I. mohammadpour nikbin
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 893 - 898
Total Pages: 6
Nb references: 10
Language: English

Abstract: Lightweight concrete is known with its advantage of reducing the self-weight of the structures. Thus, the construction cost can be saved when applied to structures such as highrise building. On the other hand, inadequate homogeneity of the cast concrete due to poor compaction or segregation may dramatically lower the performance of mature concrete in situ. To insure adequate compaction and facilitate placement of concrete in structures with congested reinforcement and in restricted areas, lightweight self-compacting concrete (LSCC) has been developed. Knowledge of the variation of in situ properties within structural element and the relationship between the in situ properties to those of standard specimens made from samples of the concrete taken at casting are important as well. This paper was designed to provide information on uniformity of in situ properties of LSCC mixes in structural wall and to compare results with those of properly compacted conventional concrete and also normalweight self-compacting concrete. The results indicated that the average compressive strength of LSCC in the structural wall increases in the direction of casting, from top to bottom.
However, this strength variation is lower in comparison to compacted conventional concrete and also is little more than that of normal-weight self-compacting concrete.

Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00