ISSN 0004-881X

A Preliminary Research On The Properties of Lightweight Expanded Clay Aggregate

by O. Arioz¹, K. Kilinci¹, B. Karasu², G. Kaya², G. Arslan¹, M. Tuncan¹, A. Tuncan¹, M. Korkut¹, S. Kivrak¹
1 Anadolu University, Faculty of Engineering and Architecture, Department of Civil Engineering, Iki Eylul Campus, 26555 Eskisehir, Turkey.
2 Anadolu University, Faculty of Engineering and Architecture, Department of Material Science and Engineering, Iki Eylul Campus, 26555 Eskisehir, Turkey.

Abstract

In order to develop a technique whereby a precrack can be introduced to CT specimens made from brittle materials, experiments were carried out using glass CT specimens. The precracks were introduced using a technique where the length of the precrack can be controlled by utilizing the frictional force occurring at the surface of the CT specimen under local compression. Frictional force is applied to the contact surface of the CT specimen which is stacked between two loading blocks, by the difference in Young`s modulus of the CT specimen and the loading blocks. Characteristics of this technique are that the precrack is almost straight plus it`s length is controllable. The fracture toughness values of the glass CT specimens were also examined in the experiments. It was shown that fracture toughness values show not only good reproducibility but are also within the range of expected values for the glass.

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