Portable Device for Indirect Assessment of Strength in Tension of Building Materials and Problem of Boundary Condition

Stepan Major; Ivan Jandejsek; Jaroslav Valach; Daniel Vavřík

doi:10.4028/www.scientific.net/AMM.486.307

Paper Titles

Influence of Honeycomb Core Compression on the Mechanical Properties of the Sandwich Structure
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Influence of Aggregate Stiffness on Fracture-Mechanical Properties of Lime-Based Mortars
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Behaviour of Different Types of Concrete under Impact and Quasi-Static Loading
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Experimental Investigation of Projectile Impact Local Damage on Cementitious Composite Slabs
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Portable Device for Indirect Assessment of Strength in Tension of Building Materials and Problem of Boundary Condition
p.307

Permeability and Basic Physical Properties of Concrete with Metakaolin Addition
p.313

Influence of Water Content in the Hardened Cement Paste Mixtures with Different Proportion of Fly Ash on the Material and Mechanical Properties
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Utilization of Recycled Fine-Ground Concrete from Railway Sleepers for Production of Cement-Based Binder
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Influence of Humidity on the Material Properties of Cement Paste with Fly Ash in the Mutual Relation 50/50
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 486Portable Device for Indirect Assessment of...

Portable Device for Indirect Assessment of Strength in Tension of Building Materials and Problem of Boundary Condition

Abstract:

A sensitive determination of mechanical properties of brittle building materials of existing buildings, requires gathering of samples by core drilling. Due to the fact, that the material samples may change their properties during transportion, it is preferred to test samples on site. Development of portable machine for Split test was therefore the first choice. The specimen is compressed with diametrically opposite symmetric line loads. The main goal of this paper is to document fine-tuning of experimental setup of the device to provide consistent and reproducible measurement. Therefore the paper concentrates on the biggest problem which is the boundary conditions of the test. For this reason, different types of contacts were studied. For boundary condition analysis was used photoelasticity. Set of experiments was performed in order to fulfill the condition of crack initiating in the middle of the specimen. Location of crack initiation was determined by the Digital Image Correlation - DIC. Various materials for contact were evaluated and it was found that the lead bar and grips with radius are best.

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Periodical:

Applied Mechanics and Materials (Volume 486)

Pages:

307-312

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.486.307

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Online since:

December 2013

Authors:

Stepan Major*, Ivan Jandejsek, Jaroslav Valach, Daniel Vavřík

Keywords:

Brazilian Disc, Brittle Building Materials, Portable Device, Split Test, Strength in Tension

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* - Corresponding Author

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