Production of Roller Compacted Concrete Samples in the Laboratory

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Production of Roller Compacted Concrete Samples in the Laboratory

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Production of Roller Compacted Concrete Samples in the Laboratory

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

PhD Workshop - Full Texts

ISBN

978-80-01-06132-9

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

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Název nakladatele

katedra betonových a zděných konstrukcí

Místo vydání

Praha

Místo konání akce

Praha

Datum konání akce

26. 5. 2017

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

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