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OSUSKÁ, L. HELA, R.
Original Title
Use of fluidized bed combustion fly ash as addition reducing shrinkage of concrete
Type
conference paper
Language
English
Original Abstract
Volumetric changes during ageing belong to natural properties of concrete. These changes, either growing or shrinking, can present a problem, which has to be taken into account during design and realization phases. This phenomenon is influenced by various factors and volumetric changes can be eliminated in many ways. One of the possibilities is setting appropriate combination of input materials and use of special additions and admixtures. This paper focused on verification of the method reducing shrinkage of concrete by means of using high temperature combustion fly ash combined with fluidized bed combustion fly ash as addition. The precondition is growth of new forms, in particular primary ettringite and monosulphate, which form because of the content free lime and sulphates in fluidized fly ash. If these minerals are formed in fresh concrete, they can positive prevent shrinkage without destruction of the composite material.
Keywords
Shrinkage, high temperature combustion fly ash, fluidized bed combustion fly ash, addition
Authors
OSUSKÁ, L.; HELA, R.
Released
11. 8. 2016
Publisher
Trans Tech Publication
Location
Switzerland
ISBN
1662-9752
Periodical
Materials Science Forum
Number
865
State
Swiss Confederation
Pages from
141
Pages to
144
Pages count
4
URL
http://www.scientific.net/MSF.865.141
BibTex
@inproceedings{BUT122710, author="Lucia {Ťažká} and Rudolf {Hela}", title="Use of fluidized bed combustion fly ash as addition reducing shrinkage of concrete", booktitle="Binders, Materials and Technologies in Modern Construction II", year="2016", journal="Materials Science Forum", number="865", pages="141--144", publisher="Trans Tech Publication", address="Switzerland", doi="10.4028/www.scientific.net/MSF.865.141", issn="1662-9752", url="http://www.scientific.net/MSF.865.141" }