Properties of cement based composites modified using diatomaceous earth
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312493" target="_blank" >RIV/68407700:21110/17:00312493 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1063/1.4994511" target="_blank" >http://dx.doi.org/10.1063/1.4994511</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1063/1.4994511" target="_blank" >10.1063/1.4994511</a>
Alternative languages
Result language
angličtina
Original language name
Properties of cement based composites modified using diatomaceous earth
Original language description
Diatomite belongs among natural materials rich on amorphous silica (a-SiO2). When finely milled, it can potentially substitute part of cement binder and positively support formation of more dense composite structure. In this connection, two types of diatomaceous earth applied as a partial substitution of 5, 10, 15, and 20 mass% of Portland cement in the composition of cement paste were studied. In the tested mixtures with cement blends, the amount of batch water remained same, with water/binder ratio 0.5. For fresh paste mixtures, initial and final setting times were measured. First, hardened pastes cured 28 days in water were characterized by their physical properties such as bulk density, matrix density and open porosity. Then, their mechanical and thermophysical parameters were assessed. Obtained results gave clear evidence of setting time shortening for pastes with diatomite what brought negative effect with respect to the impaired workability of fresh mixtures. On the other hand, there was observed strength improvement for mixtures containing diatomite with higher amount of SiO2. Here, the increase in mechanical resistivity was distinct up to 15 mass% of cement replacement. Higher cement substitution by diatomite resulted in an increase in porosity and thus improvement of thermal insulation properties.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20101 - Civil engineering
Result continuities
Project
<a href="/en/project/GA15-10591S" target="_blank" >GA15-10591S: Impact of long-term environmental conditions on the hydrophobic properties of the surface layers</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
THERMOPHYSICS 2017: 22nd International Meeting of Thermophysics 2017 and 4th Meeting of EnRe 2017
ISBN
978-0-7354-1546-1
ISSN
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e-ISSN
1551-7616
Number of pages
6
Pages from-to
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Publisher name
American Institute of Physic AIP
Place of publication
Santa Fe
Event location
Těrchová
Event date
Sep 12, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000426600400036