CRACK FORMATION RISK REDUCTION OF HPC/HSC BY SUITABLE CHOICE OF THE PLASTICIZER

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F03%3APU39679" target="_blank" >RIV/00216305:26110/03:PU39679 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26110/03:PU38394
Result on the web
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DOI - Digital Object Identifier
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Result language
čeština
Original language name
CRACK FORMATION RISK REDUCTION OF HPC/HSC BY SUITABLE CHOICE OF THE PLASTICIZER
Original language description
Development of HPC/HSC is focused on properties improvement by porosity reduction. Low porosity means lower permeability and low permeability guarantee mechanical properties and better durability. At practical production of these types of concrete the aim of the mix designers is to lower W/C ratio, which could be primarily achieved by superplasticizers. Concrete with low W/C ratio - achieved by the use of super plasticizers - tend to early age cracking in higher rate. These cracks decrease final perforrmance of the concrete - mechanical properties, durability etc. One of the reasons of the early age crack formation and subsequent decrease of concrete performance is due to thermal expansivity. Thermal expansivity of HPC/HSC is higher then of other typesof concrete due to higher amount of binder (generally CEM I 42,5 R or 52,5R) with higher and faster hydration heat development. Reactive kinetics highly depends on additives. It is possible to remarkably influence the hydration kinetics
Czech name
CRACK FORMATION RISK REDUCTION OF HPC/HSC BY SUITABLE CHOICE OF THE PLASTICIZER
Czech description
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Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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