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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 10, Issue 6 - Dec 2010
Volume 10, Issue 5 - Oct 2010
Volume 10, Issue 4 - Aug 2010
Volume 10, Issue 3 - Jun 2010
Volume 10, Issue 2 - Apr 2010
Volume 10, Issue 1 - Feb 2010
Selecting the target year
Suggestions of Policy for Revitalizing the Construction Industry in Busan
Bae, Min-Kyoung ; Lee, Jun-Sang ; Huh, Young-Ki ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 1~10
DOI : 10.5345/JKIC.2010.10.5.001
As the local economy has become stagnant, various policies have been made to revitalize the enormous construction industry. However, it is difficult for these policies to achieve their objective, as the construction industry is not an island unto itself but is interconnected in complex ways with diverse other areas of the economy. Interviews and surveys were conducted with experts in Busan, in order to identify the causes of the stagnant economy in the local construction market. The main findings were as follows. First, cost reduction and realistic master plans are needed as a solution for the problems of the redevelopment housing plan. Second, the alleviation of the construction policy is also necessary in order to overcome the problems of not considering the local construction industry. Finally, vocational training and quality education are needed to address the low awareness of construction feasibility analysis and the lack of highly trained human resources. The results of the study will help efforts to revitalize the local construction industry, and will provide an opportunity to reconsider the differences between the experts on issues of the industry.
Development of Form to Improve the Productivity of PC Structure Connections -Focused on Apartment Buildings-
Kim, Seon-Hyung ; Lee, Won-Suk ; Kim, Sun-Kuk ; Lee, Dong-Hoon ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 11~20
DOI : 10.5345/JKIC.2010.10.5.011
With the amendment to the Building Act in November of 2005 that offered incentives in terms of floor area ratio and number of stories to apartment buildings adopting the Rahmen structure to facilitate remodeling, the construction industry is paying more attention to PC structures. As connections between PC columns and beams require complex design, it is very difficult to install and remove forms. Since forms made of plywood for such connections are fabricated and installed on site, a significant amount of labor is required, and constructability is low. Furthermore, after concrete casting, the forms are removed in a state in which they cannot be recycled, which leads to a significant amount of construction waste. For this reason, a solution to address such issues needs to be studied. However, many researchers have focused only on the structural performance of PC structures in Korea and elsewhere, ignoring the need for research on the forms used in building PC structure connections. Therefore, this research aims to develop a form that can improve the productivity of PC structure connection construction, and compare it with conventional forms to highlight its contribution to gains in productivity and economic viability.
An Experimental Study on the Application of Cathodic Protection By Applying Zn-Al Metal Spray to an RC Structure
Han, Man-Hae ; Yoo, Jo-Hyeong ; Lim, Young-Chul ; Lee, Han-Seung ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 21~29
DOI : 10.5345/JKIC.2010.10.5.021
Cathodic Protection has been introduced as a method of protecting metals under the ground or sea from corrosion. Since 1970, it has been applied to reinforced concrete structures as a corrosion protection method. After 1990, it became used around the world, and its usability has been well confirmed. But this method has some problems in terms of construction and economy. To solve these problems, a Cathodic Protection Method using a highly-durable metal spray was developed. First, the specimen was covered with anodic materials (Zn, Al) by using metal spray. The corrosion protection performance was confirmed by measuring the corrosion current of the specimen. Through the experiment, it is possible to confirm that the Cathodic Protection Method using a high metal spray provides effective protection against corrosion to reinforced concrete structures.
Forecasting Construction Economy Through a Regression Analysis between Annual Interest Rate and Contract Amount
Yi, Kyoo-Jin ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 31~36
DOI : 10.5345/JKIC.2010.10.5.031
Rising interest rates positively affect investment in construction, while falling interest rates affect it negatively. In other words, the interest rate is one of the most critical factors affecting the construction sector. The purpose of this research is to analyze the relationship between the annual interest rate and construction contracts, and to present a model for quantitatively forecasting the economic performance of the construction sector. Based on the statistical data of interest rate changes for 19 years (from 1991 to 2009), this research induces an equation through regression analysis that incorporates interest rate and construction contract amounts as independent and dependent variables, respectively. The result of the analysis shows that, in the building and private sector, the interest rates are closely related to, with a correlation coefficient as high as 0.85. It was also indicated that the contract amounts of private and building sectors may increase quite rapidly in 2012.
Practical Application of GGBS-Based Alkali-Activated Binder to Secondary Products of Concrete
Sim, Jae-Il ; Yang, Keun-Hyeok ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 37~44
DOI : 10.5345/JKIC.2010.10.5.037
This study examined the practical application of ground granulated blast-furnace slag (GGBS) based alkali-activated (AA) binders for the development of cementless environmental-friendly secondary products of concrete, such as brick, shore protection blocks and interlocking blocks. The addition amount and type of alkaline ion to activate GGBS varied according to the diverse qualities of the secondary products of concrete required in Korean industrial standards (KS) and other specifications. Test results showed that the secondary products of concrete using GGBS-based AA binders surpassed the demanded capacities of KS and other specifications. In addition, shore protection block had a pH value close to neutral, enabling an advantageous environment for marine life. Therefore, the GGBS-based AA binders can be effectively applied to develop eco-friendly secondary products of concrete with reduced
A Case Study of BIM-based Framework on Constructability Tasks
Lee, Seung-Il ; Kwon, Nam-Ha ; Cho, Young-Sang ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 45~54
DOI : 10.5345/JKIC.2010.10.5.045
Recently more and more construction projects have become high-rise, complex and intelligent. Accordingly, such projects require an integrated management system for tasks, with a lean approach to construction with work processes for management and productivity. In particular, Construction Information Technology (CIT) fields are concerned with Building Information Modeling (BIM), which represents the process of generating and managing building data during its life cycle. Constructability research has progressed for the project goal which is a cost-time-quality of optimization by integrated construction knowledge and experience. However, the current constructability process has not been performed efficiently, as the existing 2D drawings and papers lack consistent and accurate information, it is difficult to share the contents of work, and the use of information is inefficient. This study proposes that the reformation and enhancement of BIM-based constructability work process can lead to brilliant performance in the framework of the construction phase through achieving collaboration between the design team and the workers at the site.
Study on the Development of Process and Data Models for the Maintenance of Rental Apartments
Jung, Young-Han ; Jung, Jae-Young ; Lee, Jae-Sung ; Cho, Bong-Ho ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 55~67
DOI : 10.5345/JKIC.2010.10.5.055
The main purpose of this study is to develop a system and data model extracted from the TO-BE process model of rental apartments to promote information exchange based on knowledge obtained through maintenance status analysis. Currently, it is difficult to find examples suggesting a data model through a process analysis of maintenance in rental apartments. Thus, this study intends to suggest a process as well as a data model to promote the development of a maintenance system for rental apartments by using building management knowledge, utilization of standardized tools, and existing FM (Facility Management) techniques to break through limitations in actual application. Ultimately, this study aims to show examples of document-oriented analysis and information technology for middle managers in charge of the maintenance of rental apartments, as well as work analysts developing the maintenance system. In further research beyond this study, complex issues on the maintenance of rental apartments, legal restrictions on customary practices of maintenance activities, effects of the scales of maintenance practices, requirements to perform maintenance activities, evaluation on the status of maintenance, life cycle cost and risks will be investigated.
A Study about Circumstances and Perception of Construction Accident Compensation
Hong, Sung-Ho ; Choi, Jin-Woo ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 69~74
DOI : 10.5345/JKIC.2010.10.5.069
It is the law that injured workers must be paid compensation through occupational health and safety insurance. But sometimes, construction companies cover the compensation for an accident by themselves in order to conceal the fact of an accident. The reason for this concealment is that they wish to get a high mark in PQ. From the point of view of a subcontractor, another reason is to avoid any negative consequences in bids. According to interviewees, some workers, knowing the vulnerability of their employers in this area, demand unreasonable levels of compensation. This study examined the circumstances, influences and participants' perception of accidents on construction sites.
A Survey on the Recognition and Effects of the Contract Screening System in Jeju Special Self-Governing Province
Lee, Dong-Wook ; Kim, Yong-Tak ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 75~86
DOI : 10.5345/JKIC.2010.10.5.075
The contract screening system is being introduced and operated as a model of advance budget reduction for local fiscal efficiency. But as the authority recognizes the contract screening system as a means of budget reduction, and companies recognize it as a means of budget curtailment, a contradictory understanding structure on the contract screening system is being formed. This research was prompted to propose a development method that will enable the contract screening system operating in Jeju Special Self-Governing Province to be appropriately established as a model of advance budget reduction. To achieve this, the operating status of the contract screening system was analyzed, and the recognition level on the contract screening system of the local government and companies was analyzed on the basis of contract screening data.
The State of Schedule Management and the Recognition of Duration Shortening
Kim, Ja-Yeon ; Kim, Eui-Sik ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 87~94
DOI : 10.5345/JKIC.2010.10.5.087
Construction projects are based on the actual field, so if the construction schedule that is established in the construction plan is delayed or extended for various reasons, construction companies are vulnerable to claims, and thus strive to complete a building within the planned timeline by shortening the construction time. Therefore, this study surveyed technicians in apartment construction in Gwangju, and studied their perceptions of the actual conditions of process control, construction time needs, goals, and methods. The results showed that the organization of the process control department and professional employees was lacking compared to other regions. The need for construction time was perceived as high, while the reduction of the construction cost was perceived as low. Regarding the reduction goal, they perceived highly the preparation for the delay of construction time and various claims, and for the reduction method, they mentioned the extension of working hours and the increase in employees. Based on the results of this study, technicians should consider that a reduction of construction time not only can make up for a delay in construction, but is also closely related to improvements in production through reduction of cost, and increased international competitiveness.
Analysis of the Characteristics of Manufactured Concrete, according to the Type of Admixture used when Remixing and Placing it
Ryu, Hyun-Gi ; Shin, Sang-Yong ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 95~102
DOI : 10.5345/JKIC.2010.10.5.095
In recent years, the demand for the development of high quality and cost effective materials, as well as the competition to ensure a diverse and sufficient amount of ready-mixed concrete, has been increasing rapidly. In this experiment, concretes made with different admixtures are blended with each other in different combinations and ratios, in order to identify potential problems. The first test was a slump level test, in which all of the concretes met the required numbers, as they also did in the test for air content. Plain organic acid concrete scored the highest in bleeding amount, but organic acid mix in general showed a similar outcome. In the early measurement of compressive strength, plain naphthalene concrete was the strongest. Of the blends, the 5:5 mix of organic acid and naphthalene was the strongest. In the standard measurement, the 5:5 mix of naphthalene and lignin was the strongest. Tensile strength tests revealed similar results. Length change rate proved to be greater in blended concrete than in plain concrete, and dry shrinkage rate was highest in the 7:3 ratio blends. Through SEM photo analysis, it was confirmed that the 7:3 ratio blends contained more micro-voids. In conclusion, with the exception of a specific few combinations, it was found that the blending of different types of concrete is undesirable due to the delayed coagulation time as well as the early decrease in strength.
A study on the Development of an Eco-friendly Rooftop Waterproofing Method
Oh, Dong-Sik ; Go, Seong-Seok ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 103~111
DOI : 10.5345/JKIC.2010.10.5.103
This research aims to make a contribution to the development of waterproofing technique for rooftops by analyzing and understanding the problems of the currently used waterproofing method and their causes. To do this, this research developed an eco-friendly waterproofing method that supplements the weaknesses of the conventionally used method by analyzing the problems of leakage resulting from design and construction work to diminish leakage, improving the quality of construction work, reducing labor required and the period of construction, and improving environment alconditions. The characteristics of the newly developed method are comparatively analyzed with the convention alpractices, and are evaluated on the site.
Field Application of 80MPa High Strength Fire Resistant Concrete using Ternary Blended Cement
Kim, Seong-Deok ; Kim, Sang-Yun ; Bae, Ki-Sun ; Park, Su-Hee ; Lee, Bum-Sik ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 113~119
DOI : 10.5345/JKIC.2010.10.5.113
Fire resistance and field tests for high-strength concrete(HSC) of 80MPa were carried out to evaluate whether or not it shows the same material properties even in the field condition of being mass-produced and supplied. As a result, it was found that fire resistant HSCs containing composite fiber(NY, PP) of 0.075% have great resistance to fire and spalling. In the field test, before the pumping air contents, slump flow, U-box, L-flow, compressive strength, gap of hydration temperature of interior and exterior of specimen and placing ratio per hour satisfied the required properties of HSC. However, after the pumping of HSC, as slump flow and L-flow were slightly less than required criterion, they need to be improved. In terms of hydration temperature of HSC, it was found to satisfy the related criterion. Packing ability as well as placing ratio per hour of HSC, which was about
, show outstanding results. If slump flow of developed ternary HSC is improved after the pumping it can be useful for the construction of high-rise buildings.
Analysis on the Heat Insulation Performance of Cold Weather Concrete according to Change of Laid Construction Conditions of Double Bubble Sheets
Han, Cheon-Goo ; Han, Min-Cheol ; Baek, Dae-Hyun ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 121~128
DOI : 10.5345/JKIC.2010.10.5.121
The present research examined heat insulation performance according to change of various laid construction conditions of double bubble sheet being used as material for heat insulation & curing construction of cold weather concrete, and its results are as follows. First, the change in a laid period of bubble sheet within 4 hours and the change in water content inside bubble sheet overall showed similar temperature history and maturity without a big difference in terms of the temperature history of concrete according to construction factors, but it could be confirmed that when a structure was thin or several bubble sheets are laid, requisites unfavorable for initial curing of concrete can occur if a lagger distance between sheets is generated. In terms of the compressive strength of concrete core specimens, it appeared that the initial compressive strength is declined when conditions unfavorable for concrete curing such as delay of a laid period of bubble sheets, induction of large distance between sheets, increase of water content inside bubble sheets and thinness of a structure of placing concrete, etc. were applied, but it appeared that as its age passes, the difference becomes small.
Evaluation on Fire Resistance Performance of High Strength Concrete Containing Fibre
Song, Young-Chan ; Kim, Yong-Ro ; Kim, Ook-Jong ; Lee, Do-Bum ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 129~135
DOI : 10.5345/JKIC.2010.10.5.129
The purpose of this research is to secure fundamental data on the application of fibre as a fire resistance method for more than 60 MPa high-strength concrete through an examination of mechanical properties and fire resistance performance. The results are as follows: 1) When there are less than 0.5~1.0kg/
contents of PP and NY fibre for 60MPa and less high strength concrete, 1.0kg/
contents of PP and NY fibre for less than 80MPa high strength concrete and 1.5kg/
contents of NY fibre for more than 80MPa high strength concrete, the effect of fibre contents on workability and strength development is not significant. 2) Based on the result of a 3-hour fire resistance test for mock-up column, it is necessary to secure 50 mm of covering depth for the regulation of fire resistance performance of high strength concrete to the standards of The Ministry of Land, Transport and Maritime Affairs. 3) It is necessary to secure more than 400mm of column size for stable fire resistance performance.
The mold form coating material research for the exposure concrete surface control
Lee, Young-Do ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 137~143
DOI : 10.5345/JKIC.2010.10.5.137
This research is a comparative analysis of the surface gloss of concrete depending on the coating material added to the cast, and includes analyses of the surface gloss of specimens made of cement mortar, with and without the addition of superplasticizer. In terms of coating material, the 7th material, which is part of a liquid packaging material, was shown to have the highest gloss, and was followed by the 3rd material, which uses transparent film. As the level of gloss is shown to vary depending on the material used for the coating film, it can be interpreted that the surface gloss can differ depending on surface particles and chemical composition factors. To make a concrete surface smooth, it is more effective to use a coating material with impermeability and a highly dense surface.
Development and Verification of Technical Criteria for a U-Bridge
Kim, Kyoon-Tai ; Kim, Chang-Han ;
Journal of the Korea Institute of Building Construction, volume 10, issue 5, 2010, Pages 145~153
DOI : 10.5345/JKIC.2010.10.5.145
With the recent acceleration in the adoption of IT in industries, converged Construction-IT has been drawing attention as a new market driver in the IT fusion industry. Despite the simultaneous implementation of U-Cities all over Korea in a manner suiting each city's own attributes, Technical Criteria to build an optimized IT-infrastructure have not yet been prepared. To solve this problem, a standard for U-City construction should be prepared. This research, therefore, draw sample contents in order to establish and verify the criteria for U-City construction. The findings are expected to be meaningful, in that they would serve as significant data for establishing the criteria for future U-City construction.