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An Analytical Investigation of Cement Penetration within Bundle of Fibers

Title: An Analytical Investigation of Cement Penetration within Bundle of Fibers
Author(s): M. Kamali Dolatabadi, S. Janetzko, T. Gries, B.-G. Kang, A. Sander
Paper category : conference
Book title: International RILEM Conference on Material Science
Editor(s): W. Brameshuber
Print-ISBN: 978-2-35158-106-3
e-ISBN: 978-2-35158-107-0
Publisher: RILEM Publications SARL
Publication year: 2010
Pages: 69 - 78
Total Pages: 10
Nb references: 11
Language: English

Abstract: During the last decade, the applications of Textile Reinforced Concrete (TRC) have grown increasingly. However, the utilization of textile fibers to bear load in end use of TRC is relatively low in comparison to dry textile due to incomplete penetration of binder of cementitious matrix into bundle of fibers. Accordingly, the main attempt of this paper is addressing a simple model to evaluate quantity of penetration of cementitious matrix into bundle of fiber by means of the geometry of the bundle of fibers and distribution of cement particle size. For this purpose, an ideal geometry for bundle of fiber is contemplated. Then the limitation for penetration of cement within bundle of fibers has been discussed on the basis of certain cement particle size distribution. Accordingly, the influence of tow geometrical namely fibers diameter, fiber packing density and titer of tow on penetration is analytically modeled. For experimental work AR-glass tow surrounded by pillar stitch has been produced under different knitting tension and stitch length. Then the influence of tow geometry on pull-out force of fibers bundle embedded in concrete is investigated. It is demonstrated that that the amount of penetration of cement particles into bundle of fibers of 2400 tex AR-glass fibers (fiber diameter 27µ) at an interval packing density of 0.3-0.8 is negligible (20-3% respectively) and these values are verified by empirical data of pull-out test.

Online publication: 2010-10-21
Publication type : full_text
Public price (Euros): 0.00

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