Detail publikačního výsledku

Ready mixed self compacting concrete

HELA, R.; HUBERTOVÁ, M.

Original Title

Ready mixed self compacting concrete

English Title

Ready mixed self compacting concrete

Type

Paper in proceedings (conference paper)

Original Abstract

The paper describes a development and use of lightweight self-compacting concrete (LWSCC) using artificial lightweight aggregate based on burnt clay for coarse fraction of aggregate for transported ready mix concrete. The ability to produce lightweight structural self-compacting concrete of volume weight between 1600 and 1800 kg.m-3 and strength around 40 N.mm-3 shows new ways of development and use of SCC. The paper describes mixtures and methods for testing rheological properties of fresh concretes to fulfill parameters of self-compacting including description of testing apparatus and parameters. Different versions of mixtures are mentioned with sufficient physico-mechanical properties of hardened concrete - compression strength, tensile bending strength, static elastic modulus and freeze resistance using artificial light weight aggregate and active admixtures based on secondary raw materials (fly ash and other active admixtures - metakaolin, micro-silica). Problems of water-absorbing capacity of lightweight aggregate (up to 40%) are dealt with as well as problems of keeping stable consistency for 90 minutes time. In the conclusion, practical application of SCC lightweight floor structures are presented.

English abstract

The paper describes a development and use of lightweight self-compacting concrete (LWSCC) using artificial lightweight aggregate based on burnt clay for coarse fraction of aggregate for transported ready mix concrete. The ability to produce lightweight structural self-compacting concrete of volume weight between 1600 and 1800 kg.m-3 and strength around 40 N.mm-3 shows new ways of development and use of SCC. The paper describes mixtures and methods for testing rheological properties of fresh concretes to fulfill parameters of self-compacting including description of testing apparatus and parameters. Different versions of mixtures are mentioned with sufficient physico-mechanical properties of hardened concrete - compression strength, tensile bending strength, static elastic modulus and freeze resistance using artificial light weight aggregate and active admixtures based on secondary raw materials (fly ash and other active admixtures - metakaolin, micro-silica). Problems of water-absorbing capacity of lightweight aggregate (up to 40%) are dealt with as well as problems of keeping stable consistency for 90 minutes time. In the conclusion, practical application of SCC lightweight floor structures are presented.

Keywords

self compacting concrete, lightweight concrete, porrous aggregate

Key words in English

self compacting concrete, lightweight concrete, porrous aggregate

Authors

HELA, R.; HUBERTOVÁ, M.

Released

26.09.2007

Publisher

Talylor&Francis London

Location

Melbourne

ISBN

978-0-415-45754-5

Book

Innovations in Structural Engineering and Construction

Edition

1

Pages from

477

Pages to

483

Pages count

7

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@inproceedings{BUT27817,
  author="Rudolf {Hela} and Michala {Hubertová}",
  title="Ready mixed self compacting concrete",
  booktitle="Innovations in Structural Engineering and Construction",
  year="2007",
  series="1",
  number="1",
  pages="477--483",
  publisher="Talylor&Francis London",
  address="Melbourne",
  isbn="978-0-415-45754-5"
}