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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korea Institute of Building Construction
Journal Basic Information
Journal DOI :
The Korean Institute of Building Construction
Editor in Chief :
Volume & Issues
Volume 13, Issue 6 - Dec 2013
Volume 13, Issue 5 - Oct 2013
Volume 13, Issue 4 - Aug 2013
Volume 13, Issue 3 - Jun 2013
Volume 13, Issue 2 - Apr 2013
Volume 13, Issue 1 - Feb 2013
Selecting the target year
Strength Characteristics of Rammed Earth Using Hwangtoh Binder
Hwang, Hey-Zoo ; Yang, Jun-Hyuk ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 1~9
DOI : 10.5345/JKIBC.2013.13.1.001
There has recently been a great deal of research into the appropriate building materials for eco-friendly construction. In the field of earth architecture, there have been walls made of pure earth or with rammed earth including a small amount of cement. The purpose of the study is to investigate the possibility increasing compressive strength through a more eco-friendly composition by using Hwangtoh binder rather than cement to increase the strength performance of rammed earth. It was found that the more the ratio of binder was increased, the more the strength was increased, but enhancement did not increase noticeably in the lower part that did not compact completely, and proper height to pour earth is 200 mm. When stone dust was added, compressive strength was lower than when adding fine aggregate and coarse aggregate, but a finer surface texture was provided.
A Case Study on Architectural Engineering Design Using Action Learning
Jang, Myung-Houn ; Choi, Hee-Bok ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 10~19
DOI : 10.5345/JKIBC.2013.13.1.010
Companies want universities to produce graduates with creativity and problem-solving skills, and for this reason universities have extended engineering design education, including in the field of architectural engineering. This paper investigates an engineering design class in the Department of Architectural Engineering, J University. The class was taught in 2010 and 2011using an Action Learning (AL) teaching-learning strategy. The students responded that the level of participation and satisfaction was high in the Action Learning classes, and role allocation or responsibility and communication of the project teams were very effective. But it was also found that as Action Learning is such a new method for students of engineering design, an orientation session that describes what to do and what to prepare should be given before the class starts.
Effects of Fiber Volume Fraction and Water/Cement Ratio on Toughness Development of Steel Fiber Reinforced Concrete
Lee, Chang Joon ; Lange, David A. ; Lee, Jae Yong ; Shin, Sung Woo ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 20~28
DOI : 10.5345/JKIBC.2013.13.1.020
Flexure toughness of Steel Fiber Reinforced Concrete (SFRC) shows a time-dependent characteristic due to the hydration process of the cement matrix in the SFRC system. The effect of two important factors, water/cement (w/c) ratio and fiber volume fraction, on the flexure toughness development of SFRC were investigated. Three different SFRC mixtures with hooked-end steel fibers were tested using a four-point bending testing configuration. Each mixture was tested at five different ages. The results showed that the post-peak toughness of SFRC developed at an earlier age than the first-crack toughness.
Manufacturing Zero-Cement Bricks by Replacing Cement with Recycled Aggregates and Blast Furnace Slag Powder
Park, Kyung-Taek ; Han, Cheon-Goo ; Kim, Dae-Gun ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 29~37
DOI : 10.5345/JKIBC.2013.13.1.029
In this study, a zero-cement brick is manufactured by replacing cement with recycled aggregates and blast furnace slag powder. Experimental tests were conducted with standard sized samples of
(KS F 4004), and this manufacturing technique was simulated in practice. Results showed that the zero-cement brick with 0.35 W/B had the highest compressive strength, but the lowest absorption ratio. This absorption ratio of zero-cement brick with 0.35 W/B was lower than the required level determined by KS F 4004. Hence, to increase the absorption ratio, crushed fine aggregate (CA) and emulsified waste vegetable oil (EWO) were used in combination in the zero-cement brick. It was found that the zero-cement brick with CA of 20% and EWO of 1% had the optimum combination, in terms of having the optimum strength development (12 MPa) and the optimum absorption ratio (8.4%) that satisfies the level required by KS. In addition, it is demonstrated that for the manufacturing of zero-cement brick of 1000, this technique reduces the manufacturing cost by 5% compared with conventional cement brick.
Analysis of the Efficiency of Improved Bubble Sheet for Heat Curing in Cold Weather
Choi, Hyun-Kyu ; Son, Myung-Sik ; Han, Cheon-Goo ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 38~47
DOI : 10.5345/JKIBC.2013.13.1.038
When building with concrete in cold weather, an insulation method of heat curing must be determined, and a holistic curing plan that considers the characteristics of structures, the heat loss coefficient of a curing sheet, the joint condition of the curing materials and the quantity of heat produced by a heating apparatus is an essential prerequisite for protection against early frost damage. But on a number of national construction sites, there have been serious problems in cold weather concreting due to the unreliability of the information obtained from practical experience. In the construction field in Japan, there is a specification for heat curing prepared by Japanese Architectural Society, which provides an equation for calculating heat quantity. It is also necessary to adopt a detailed specification for a standard heat curing method that is applicable to all national construction sites. In this study, the effect of bubble sheets on the economic feasibility of cold weather concrete is investigated through a comparison with the blue sheets commonly prescribed in national construction sites. In conclusion, this study found that bubble sheets had the effect of reducing the cost of curing materials and the fuel cost consumed by a heating apparatus, compared to the use of blue sheets.
Strength and Microstructure of Reactive Powder Concrete Using Ternary Pozzolanic Materials
So, Hyoung-Seok ; Janchivdorj, Khulgadai ; Yi, Je-Bang ; Jang, Hong-Seok ; So, Seung-Young ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 48~57
DOI : 10.5345/JKIBC.2013.13.1.048
To consider the practicality and economic feasibility of developing reactive powder concrete (RPC), the strength and microstructure properties of RPC using ternary pozzolanic materials (silica fume, blast furnace slag, fly ash) were investigated in this study. Through the investigation, it was found that the compressive strength of RPC using ternary pozzolanic materials was increased significantly compared to that of the original RPC containing silica fume only. A considerable improvement in the flexural strength of RPC using ternary pozzolanic materials was found, and then the utilization of a structural member subjected to bending was expected. The X-ray diffractometer (XRD) analysis and Scanning Electronic Microscope (SEM) revealed that the microstructure of RPC was denser using the ternary pozzolanic materials than the original RPC.
Review on the Fire Resistance and Pumpability Performance of Fiber Reinforced High Strength Concrete
Kwon, Hae-Won ; Kim, Young-Su ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 58~65
DOI : 10.5345/JKIBC.2013.13.1.058
Currently, many high-rise buildings are built in Korea for land-efficient utilization and vista. In high-rise buildings this tall, the use of high-strength concrete is essential to reduce the cross-section of structure members and secure axial load. However, this high strength concrete is vulnerable to spalling by fire, due to the water vapor pressure caused by the very high temperature in fire. To prevent this, the main method used is to reinforce the concrete with fiber. However, there has been little research on the pumpability of fiber reinforced high strength concrete. For this reason, this study features a performance review based on the properties and pumpability of fiber reinforced high strength concrete. In addition, the parameter of rheology was measured by extracting mortar from the concrete, and friction factor was measured through a 400 m horizontal pipe pumping test using the fiber reinforced high strength concrete. The basic information on fiber reinforced high strength concrete that we obtain through the experiments and review will contribute to the field.
A Comparison of Construction Cost Estimation Using Multiple Regression Analysis and Neural Network in Elementary School Project
Cho, Hong-Gyu ; Kim, Kyong-Gon ; Kim, Jang-Young ; Kim, Gwang-Hee ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 66~74
DOI : 10.5345/JKIBC.2013.13.1.066
In the early stages of a construction project, the most important thing is to predict construction costs in a rational way. For this reason, many studies have been performed on the estimation of construction costs for apartment housing and office buildings at early stage using artificial intelligence, statistics, and the like. In this study, cost data held by a provincial Office of Education on elementary schools constructed from 2004 to 2007 were used to compare the multiple regression model with an artificial neural network model. A total of 96 historical data were classified into 76 historical data for constructing models and 20 historical data for comparing the constructed regression model with the artificial neural network model. The results of an analysis of predicted construction costs were that the error rate of the artificial neural network model is lower than that of the multiple regression model.
Improvement of Educational Contents to Enhance the Efficiency of Construction Worksite Safety Training
Kim, Tae-Hui ; Ahn, Sungjin ; Lee, Taick-Oun ; Kim, Suk Bong ; Park, Young Jun ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 75~83
DOI : 10.5345/JKIBC.2013.13.1.075
The prevention of safety accidents can be achieved through Harvey`s 3E`s: Engineering, Enforcement, and Education. On construction sites, however, enforcement and engineering did not prove to be valid ways of reducing the number of safety accidents, as enforcement and engineering have failed to overcome and/or supplement the realistic limits regarding the relatively lower education levels of construction workers and the communication issues with foreign workers. On the other hand, safety education can enable the advancement of safety management by enhancing the educational contents and their methods of delivery. To improve the efficiency of safety education via educational contents, this research conducted a qualitative and quantitative analysis on the validity of the newly educational contents by overviewing possible accident types in different work phases. Of the accident types identified by the qualitative analysis, neither highly important nor insignificant accident types were found, yet all the suggested types are found to be required. In addition, this study did not find any significant differences in the occurrence probability of safety accidents related to the level of importance of each type of accident. The qualitative analysis in this research verified that the suggested accident types can be valid, educational material that can take into account future safety accidents.
Electromagnetic Pulse Shielding Effectiveness and Construction Availability of Cast-In-Place Structures Using Corrugated Metal-Plates
Kim, Suk Bong ; Yoon, Sangho ; Min, Gyung Chan ; Ahn, Sungjin ; Park, Young Jun ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 84~89
DOI : 10.5345/JKIBC.2013.13.1.084
This study aims to examine the effectiveness of electromagnetic pulse shielding in cast-in-place protective shelters using corrugated metal-plates, and then reviews their usability for the Republic of Korea Army. The Korea Corps of Engineering has evaluated corrugated metal-plates as a construction material for cast-in-place structures, which have to defend against mechanical impacts as well as electromagnetic pulses. Corrugated metal-plate is known as a superb mechanical protective material, so much so that it has been employed in ammunition magazines and artillery platforms in the armed forces. Moreover, as a metal, such as steel and copper, it is universally recognized as one of the most effective electromagnetic pulse shielding materials. In addition to effectively shielding from electromagnetic pulses and protecting against mechanical impacts, corrugated metal-plates should prove to be an appropriate construction material for the cast-in-place protective shelter in terms of construction availability and economic feasibility. The shielding effectiveness of the suggested structures is examined based on MIL-STD 188-125-1. A few frequency bands need an increase of 15~30dB in shielding effectiveness because of unbidden apertures caused by flaws associated with welding, assembling, and material deformation. However, allowing for the approximately 40dB of shielding provided by soil; the examined structure, which is buried underground, can offset its shortcomings sufficiently.
Site Quality Evaluation Prototype for Building Deck-plate Construction
Shim, Young-Bo ; Cho, Dong-Hyun ; Koo, Kyo-Jin ;
Journal of the Korea Institute of Building Construction, volume 13, issue 1, 2013, Pages 90~100
DOI : 10.5345/JKIBC.2013.13.1.090
Deck-plates are widely used on construction sites, and have the advantage of enabling contractors to achieve a relatively uniform quality. But nevertheless, quality deviation in deck-plate construction can occur as the result of differences in site conditions and the experience of crew workers. In this study, the authors present a site quality evaluation prototype for building deck-plate construction. Through analyses of case studies and interviews with experts, standard quality check sheets and a quality management index were developed by estimating the importance of quality check items based on a Failure Mode and Effects Analysis (FMEA) method. The applicability and effectiveness of the prototype was evaluated through a case study and interviews with case participants. It was found that the prototype promoted an active quality management as a way of continuously improving quality management in deck-plate construction instead of passive quality inspection practice.