D e v e l o p m e n t o f C o n f i g u r a t i o n of T r a n s v e r s e R e i n f o r c e m e n t
653
DEVELOPMENT OF CONFIGURATION OF TRANSVERSE
REINFORCEMENT IN REINFORCED CONCRETE COLUMNS WITH
ELECTRIC ARC FURNACE OXIDIZING SLAG AGGREGATES
Min-Jun Kim
1
, Young-Hyun Lee
2
, Sang-Woo Kim
3
, Kil-Hee Kim
4
1
Ph. D. Candidate, Dept. of Architectural Engineering, Kongju National University, 275 Budae-Dong, Cheonan,
Chungnam 330-717, South Korea
2
Master’s Course, Dept. of Architectural Engineering, Kongju National University, 275 Budae-Dong, Cheonan,
Chungnam 330-717, South Korea
3
Research Assistant Professor, Dept. of Architectural Engineering, Kongju National University, 275 Budae-
Dong, Cheonan, Chungnam 330-717, South Korea
4
Associate Professor, Dept. of Architectural Engineering, Kongju National University, 275 Budae-Dong,
Cheonan, Chungnam 330-717, South Korea
Abstract
This study develops a configuration of transverse reinforcement in reinforced concrete
(RC) columns with electric arc furnace oxidizing slag aggregates. Amount of construction
materials used in structural buildings should be decreased to not only reduce construction
wastes and carbon dioxide emission but also prevent global warming and environmental
pollution. To verify the proposed configuration of transverse reinforcement of RC columns,
this study estimates the flexural performance of reinforced concrete (RC) columns
subjected to reversed cyclic lateral loading. The main experimental variables were
designed to have the configuration and electric arc furnace oxidizing slag aggregates. H-
type specimens with rectangular ties and S-type specimens with spirals having rectangular
and octagonal shapes were cast and tested in this study. Furthermore, the specimens
were designed to be subjected to anti-symmetric moment. The experimental result
indicated that the specimens with proposed S-type transverse reinforcements showed
higher ductility and energy dissipation capacity than the specimens with H-type ones even
though the amount of transverse reinforcing steel of S-type specimens had less than half
that of H-type specimens.
Keywords:
Electric arc furnace oxidizing slag aggregate, RC columns, Flexural behavior,
Ductility, Configuration, Transverse reinforcement
Introduction
As one of the most important industries for mankind, the construction industry has
contributed to improved quality of life and social prosperity along with its development. On
the other hand, it has caused indiscriminate development and use of natural resources,
which led to various problems such as pollution and exhaustion of natural resources as
well as increased energy consumption resulting from development of natural resources.
Thus, there has been an increasing interest in eco-friendly buildings for reduction of
pollution and energy consumption, which is evidenced by the establishment of the
Leadership in Energy and Environmental Design (LEED 2012), which is a certification
system for eco-friendly buildings. As part of this effort, there has been active research on
eco-friendly construction materials, and one of the notable topics is the recycling of electric
arc furnace slag, a by-product in the steel industry.
When
electric arc furnace oxidizing slag is recycled as a concrete aggregate, it can reduce
the problems of pollution and energy consumption occurring during the production of
natural aggregate
. Also, aggregate made from electric arc furnace oxidizing slag is
characterized by higher unit volume weight and strength compared to natural aggregate,
which makes is applicable to underground structures and structures requiring
a weight
load. However,
electric arc furnace oxidizing slag aggregate has mainly been used for low
value-added purposes such as mounding due to lack of basic research in the past. In
