Applicability of electric arc furnace oxidising slag aggregates for RC columns subjected to combined bending and axial loads

Abstract

This study evaluates the applicability of electric arc furnace (EAF) oxidising slag as a concrete aggregate for structural members. The test variables are designed to the types of aggregates and axial loads. A total of six reinforced concrete columns subjected to reversed cyclic antisymmetric moment are tested in flexure. From experimental results, flexural strength of specimens with EAF oxidising slag aggregates is similar to that of specimens with natural aggregates regardless of axial loads. Furthermore, it can be founded from test results that ductility capacity of slag aggregate specimens is superior to that of natural aggregate specimens.

Keywords:

• EAF oxidising slag aggregate
• RC columns
• Flexural strength
• Ductility
• Axial load

Acknowledgements

This work was supported by the Priority Research Centres Programme (2012-0006682) and Basic Science Research Programme (2012R1A1A2039067) through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology. This research was also financially supported by the Human Resources Development programme (No. 20114010203040) of the Korea Institute of Energy Technology Evaluation and Planning grant funded by the Korea government Ministry of Trade, Industry and Energy.