SENSITIVITY OF BRITTLENESS OF THE CONCRETE TO THE PORE STRUCTURE OF THE CEMENT PASTE

Serkan Yatagan

Abstract: One of the essential factors which affects the performance of the concrete buildings under earthquake loads is the degree of brittleness of the concrete. It is possible to investigate the brittleness directly by dynamic experiments, whereas the static experiments which make it possible to get some numerical values. In this work, the second way is choosen and the brittleness of the concrete is expressed as the ratio between the compressive strength and the tension strength of the concrete (The brittleness index). The relationship between the brittleness, the grading of the aggregate mixture and the pore structure of the cement paste is investigated. The degree of sensitivity of the values determining the brittleness to the pore structure of the cement paste is also determined; then the factors determining the sensitivity correlation constants are investigated. The correlations between properties are strong because their sensitivities to the pore structure of the cement paste are close.

Keywords: Brittleness, Correlation Coefficients, Pore Structure

DOI: https://doi.org/10.15623/ijret.2016.0506045