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Method for Determination of Tensile Properties of ECC - I: Formulation and Parameter Variations

Title: Method for Determination of Tensile Properties of ECC - I: Formulation and Parameter Variations
Author(s): L. Østergaard, J. F. Olesen
Paper category : conference
Book title: International RILEM Workshop on High Performance Fiber Reinforced Cementitious Composites in Structural Applications
Editor(s): G. Fischer and V. C. Li
Print-ISBN: 2-912143-93-4
e-ISBN: 2912143942
Publisher: RILEM Publications SARL
Publication year: 2006
Pages: 47 - 55
Total Pages: 9
Nb references: 6
Language: English

Abstract: Today, Engineered Cementitious Composites (ECCs) have been developed to a stage where the material is being used in field testing and limited full scale constructed facilities. However, the lack of reliable, practical, standardized test methods for determination of the strain hardening (???) properties of the material constitutes a significant obstacle for day-to-day structural engineering design and material quality control. In practice a simple and robust test method is required on a construction site. The uniaxial tension test (UTT) is regarded too complicated to serve as such. Instead, the widely adopted four point bending test (FPBT) may be used for this purpose, provided that an appropriate interpretation of the test data is available.
This paper, together with a companion paper, presents a contribution in this direction. Here, analysis of a nonlinear ECC hinge is used to formulate a model which includes consideration of the tensile and compressive ??? properties, crushing and crack localization. The results from the hinge analysis are implemented into the FPBT and important features as the point of materials localization and the point of structural localization are described. A detailed parametric analysis of the model is presented, and it turns out that a significant part of the pre-peak deflection may be associated with materials localization.

Online publication: 2005-05-15
Classification: Standards for Materials and Testing
Publication type : full_text
Public price (Euros): 0.00
doi: 10.1617/2912143942.006

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