Cement paste containing micronized recycled concrete - influence of hardening accelerators on the modulus of elasticity

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00342717" target="_blank" >RIV/68407700:21110/20:00342717 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.14311/APP.2020.26.0019" target="_blank" >http://dx.doi.org/10.14311/APP.2020.26.0019</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.14311/APP.2020.26.0019" target="_blank" >10.14311/APP.2020.26.0019</a>

Result language
angličtina
Original language name
Cement paste containing micronized recycled concrete - influence of hardening accelerators on the modulus of elasticity
Original language description
The article deals with the selection of a suitable hardening accelerator for cement composite material for mass production of masonry blocks. The blocks contain cement and finely ground recycled concrete in ratio 1:1. Three different hardening accelerators in different quantity were tested for possibility of fast removing formwork. The dynamic modulus of elasticity was measured by non-destructive resonance method to determine the initial strengths. The modulus of elasticity was measured 7 and 12 hours after sample production to determine the increase in initial strength. Subsequently, the modulus of elasticity was measured at 1, 7, 14, 21 and 28 days after production of the test specimens. The resulting moduli of elasticity were compared with reference samples.
Czech name
—
Czech description
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Project
<a href="/en/project/FV20503" target="_blank" >FV20503: Lightweight masonry materials based on micro-milled mineral by-products with controlled utility properties</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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