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Title:Bond improvement in cementitious mortars reinforced with continuous carbon filaments
Authors:ID Ivanič, Andrej (Author)
ID Lubej, Samo (Author)
ID Radosavljević, Milan (Author)
Files:URL http://www.civilica.com/EnPaper-ICCT01-ICCT01_096.html
 
Language:English
Work type:Unknown
Typology:1.08 - Published Scientific Conference Contribution
Organization:FGPA - Faculty of Civil Engineering, Transportation Engineering and Architecture
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, superplasticizer and air entraining agent - on the improvement of the bond 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 bond improvement was insignificant. The application of the air entraining agent caused the formation of air bubbles inside the mortar matrix. Air bubbles formed in the vicinity of the multifilament yarn were found to provide mechanical anchoring for fibres leading to a significant increase in interface friction. Fibre-bundle pullout tests were carried out to confirm the effectiveness of the admixtures to improve the interface bonding. Based on the resulting load-displacement curves, air entraining agent was found to be most effective in enhancing the bonding characteristics of the cementitious composite.
Keywords:carbon fibers, cementitious composites, bond properties
Year of publishing:2009
PID:20.500.12556/DKUM-26568 New window
UDC:691
ISSN on article:1735-5540
COBISS.SI-ID:14199062 New window
NUK URN:URN:SI:UM:DK:LRQAQF8D
Publication date in DKUM:31.05.2012
Views:1621
Downloads:42
Metadata:XML DC-XML DC-RDF
Categories:Misc.
:
IVANIČ, Andrej, LUBEJ, Samo and RADOSAVLJEVIĆ, Milan, 2009, Bond improvement in cementitious mortars reinforced with continuous carbon filaments. In : Civilica [online]. Published Scientific Conference Contribution. 2009. [Accessed 25 April 2025]. Retrieved from: http://www.civilica.com/EnPaper-ICCT01-ICCT01_096.html
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Record is a part of a journal

Title:Civilica
Shortened title:Civilica. encycl. civ. eng
Publisher:Shirkat-i tusiđah-i fanavaräi-i säakhtimäan-i bäum/säazah
ISSN:1735-5540
COBISS.SI-ID:14198550 New window

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