Vpliv zrnavostne strukture lahkega agregata na zgodnje avtogeno krčenje betona visoke trdnosti

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Language:	Slovenian
Year of publishing:	2013
Source:	Ljubljana
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FGG - Faculty of Civil and Geodetic Engineering
Publisher:	[D. Maleš]
UDC:	624.012.4:691.3(043.2)
COBISS:	6395489
Views:	2678
Downloads:	510
Average score:	0 (0 votes)
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Secondary language:	English
Secondary title:	ǂThe ǂinfluence of structure of lightweight aggregate on early autogenous shrinkage of high strenght concrete
Secondary abstract:	Early autogenous shrinkage of high strength concretes is relatively large. It can be reduced by using internal water reservoirs. Lightweight aggregate was used for internal water reservoir. 12% of aggregate was replaced with pre-soaked lightweight aggregate in the concrete mixture. On the basis of experiments in the graduation thesis we studied the influence of granulation of lightweight aggregate on early autogenous shrinkage. The shrinkage was measured electronically during the first day. In the next few days it was measured with a mobile displacement transducer. Beside autogenous shrinkage we measured the compressive strength of concrete. We concluded that content of pre-soaked lightweight aggregate have significant impact on autogenous shrinkage but relatively little impact on compressive strength.
Secondary keywords:	autogenous shrinkage;high strength concrete;lightweight aggregate;internal curing of concrete
File type:	application/pdf
Type (COBISS):	Bachelor thesis/paper
Thesis comment:	Univ. v Ljubljani, Fak. za gradbeništvo in geodezijo
Pages:	X, 27 str.
Type (ePrints):	thesis
Title (ePrints):	The influence of granulation on lightweight aggregate on early autogenous shrinkage of high strength concrete
Keywords (ePrints):	zgodnje avtogeno krčenje;betoni visoke trdnosti;lahki agregat;notranja nega betona
Keywords (ePrints, secondary language):	autogenous shrinkage;high strength concrete;lightweight aggregate;internal curing of concrete
Abstract (ePrints):	Zgodnje avtogeno krčenje betonov visoke trdnosti je razmeroma veliko. Zmanjšamo ga lahko z uporabo notranjih rezervoarjev vode. Za notranji rezervoar vode smo uporabili lahki agregat. V betonski mešanici smo 12% agregata nadomestili s predhodno namočenim lahkim agregatom. Na podlagi eksperimentalnih rezultatov smo v okviru diplomske naloge raziskovali vpliv različnih frakcij lahkega agregata na velikost zgodnjega avtogenega krčenja. Avtogeno krčenje v prvem dnevu smo merili elektronsko. V naslednjih dneh smo meritve izvajali s pomočjo nasadnega deformetra. Poleg avtogenega krčenja, smo merili tudi tlačne trdnosti preiskovanih betonov. Ugotovili smo, da vsebnost predhodno namočenega lahkega agregata znatno vpliva na velikost zgodnjega avtogenega krčenja, na velikost tlačne trdnosti pa razmeroma malo.
Abstract (ePrints, secondary language):	Early autogenous shrinkage of high strength concretes is relatively large. It can be reduced by using internal water reservoirs. Lightweight aggregate was used for internal water reservoir. 12% of aggregate was replaced with pre-soaked lightweight aggregate in the concrete mixture. On the basis of experiments in the graduation thesis we studied the influence of granulation of lightweight aggregate on early autogenous shrinkage. The shrinkage was measured electronically during the first day. In the next few days it was measured with a mobile displacement transducer. Beside autogenous shrinkage we measured the compressive strength of concrete. We concluded that content of pre-soaked lightweight aggregate have significant impact on autogenous shrinkage but relatively little impact on compressive strength.
Keywords (ePrints, secondary language):	autogenous shrinkage;high strength concrete;lightweight aggregate;internal curing of concrete
ID:	8312931