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Title:Izboljšanje stika med cementno malto in kontinuiranimi ogljikovimi vlakni
Authors:ID Ivanič, Andrej (Author)
ID Lubej, Samo (Author)
Files:URL http://www.dlib.si/details/URN:NBN:SI:DOC-E3KERIVL
 
Language:Slovenian
Work type:Not categorized
Typology:1.01 - Original Scientific Article
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
Abstract:Najpomembnejši parameter, ki vpliva na lastnosti vlaknastih cementnih kompozitov, je kvaliteta vezi v stični coni med matrico in vlakni. Članek obravnava vpliv mikrosilike in superplastifikatorja na povečanje trdnosti stika med cementno malto in snopičem kontinuiranih ogljikovih vlaken. Analiza mikrostrukture z elektronskim vrstičnim mikroskopom je pokazala, da je dodatek mikrosilike zmanjšal poroznost in količino CH kristalov in tako utrdil stično cono in ojačal vpetje vlaken. Dodatek superplastifikatorja je sicer izboljšal obdelovalnost sveže malte, kar pa ni bistveno vplivalo na izboljšanje kvalitete vpetja. Trdnost stika je bila kvantitativno ovrednotena z rezultati izvlečnih testov,ki so pokazali, da se z dodatkom kombinacije mikrosilike in superplastifikatorja doseže največje izboljšanje stika med cementno matrico in ogljikovimi vlakni.
Keywords:gradbeni materiali, cementni kompoziti, trdnost stika, kontinuirana ogljikova vlakna
Publisher:Zveza društev gradbenih inženirjev in tehnikov Slovenije
Year of publishing:2009
Number of pages:str. 16-22
Numbering:Letn. 58, 1
PID:20.500.12556/DKUM-52544 New window
UDC:691.32:620.16
ISSN on article:0017-2774
COBISS.SI-ID:13055766 New window
NUK URN:URN:SI:UM:DK:DHBBC95N
Publication date in DKUM:10.07.2015
Views:1445
Downloads:45
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
IVANIČ, Andrej and LUBEJ, Samo, 2009, Izboljšanje stika med cementno malto in kontinuiranimi ogljikovimi vlakni. Gradbeni vestnik. glasilo Zveze društev gradbenih inženirjev in tehnikov Slovenije [online]. 2009. Vol. 58, no. 1, p. 16–22. [Accessed 1 April 2025]. Retrieved from: http://www.dlib.si/details/URN:NBN:SI:DOC-E3KERIVL
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Record is a part of a journal

Title:Gradbeni vestnik. glasilo Zveze društev gradbenih inženirjev in tehnikov Slovenije
Shortened title:Gradb. vestn.
Publisher:Zveza društev gradbenih inženirjev in tehnikov Slovenije
ISSN:0017-2774
COBISS.SI-ID:859140 New window

Secondary language

Language:English
Title:Bond improvement in cementitious mortars reinforced with continuous carbon filaments
Abstract:Among various parameters that influence the properties of the composite, the bond between the cementitious matrix and the fibres is the most important one. This paper investigates the influence of admixtures - silica fume and superplasticizer - on the improvement of the bond strength between bundled carbon filaments and cementitious mortars. An overall microstructural analysis has shown that the addition of silica fume strengthen the interfacial transition zone by both the reduction of its porosity and the consumption of CH crystals. The addition of a superplasticizer increased the workability of fresh mortars but the improvement of the bond strength was not significant. Fibre-bundle pull-out tests were caried out to confirm the effectiveness of the admixtures to improve the bond strength. Based on the resulting load-displacement curves, the combination of silica fume and superplasticizer were found to be the most effective in improving the bond strength of the composite.


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