Production of Roller Compacted Concrete Samples in the Laboratory

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00313621" target="_blank" >RIV/68407700:21110/17:00313621 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Production of Roller Compacted Concrete Samples in the Laboratory
Original language description
The aim of this work was to analyse two methods of preparation of Roller-Compacted Concrete laboratory samples. Bulk density is the comparative parameter. One of the problems connected with the technology is preparation of representative samples in the laboratory. The first method used dynamic compaction by pneumatic hammer. The second method of compaction had a static character. The specimens were loaded force in laboratory loading machine to create the same conditions as during static rolling (in the Czech, only static rolling is commonly used). Bulk densities obtained by the two compaction methods were compared with core drills extracted from real RCC structure. For both compaction methods, immediate bearing index test was performed to verify the quality of compaction. A fundamental difference between static and dynamic compaction was identified. In static compaction, initial resistance to penetration of the mandrel was higher, after exceeding certain limit the resistance was constant. Specimens made by hammer actively resisted throughout the test, the whole volume was uniformly compacted.
Czech name
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Czech description
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Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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