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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
A Linkage Method for the Life Cycle Cost Breakdown Structure through an Analysis of Boundary Conditions
Jeong, Jae-Hyuk ; Kim, Tae-Hui ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 321~332
DOI : 10.5345/JKIBC.2013.13.4.321
Costs and expenses are intertwined and incurred throughout an entire construction project, even from the pre-construction phase, and each phase has a different impact on the life cycle cost (LCC). However, the cost breakdown structure (CBS) is different in each phase of a building construction project, which makes it hard to reasonably calculate construction cost. For this reason, the boundary conditions were analyzed in this study based on the life cycle cost break structure (LCCBS). In addition, breakdown factors were analyzed based on the boundary conditions to derive a linkage method. The validity of the linkage method was verified through application to actual construction projects. Through the analysis, it was found that the problem of items being left out was reduced by more than 97.2 percent, and the work was done an average of 6 hours faster compared to the conventional method. It is expected that by applying the new LCC system, LCC will be both reduced and calculated in a more efficient manner.
Adoption of Virtual Technology to the Development of a BIM based PMIS
Suh, Bong-Gyo ; Lee, Ghang ; Yun, Seok-Heon ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 333~340
DOI : 10.5345/JKIBC.2013.13.4.333
As construction projects become bigger, PMIS is being used as a project collaboration tool for project participants, owners, designers, inspectors and contractors. As the data type used in PMIS is usually text and most PMIS have no standard information classification system, there is a problem with data usability, such as the capacity for data search and analysis. BIM uses Objects and Properties, and this information might be used for relating with other construction information. As such, BIM technologies can be used with PMIS to enhance the data usability. The web environment is very convenient for multiple users, but the problem is that the data transfer speed is low for big files such as BIM model files. In this study, we suggested a Virtual Technology (VT) application to enhance the performance of BIM data exchange in PMIS, and tested and analyzed its efficiency when it is used to integrate BIM and PMIS in the web environment. The results of the study showed that VT can be used to enhance the efficiency of BIM data exchange in the web environment.
Analysis of the Causes of Defects in Fenestration Construction and Their Impacts on Construction Quality - Focused on Door Hardware -
Moon, Sang-Deok ; Chung, Jae-Min ; Ock, Jong-Ho ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 341~350
DOI : 10.5345/JKIBC.2013.13.4.341
For this study, a series of interviews with engineers in the Korean construction industry was carried out through a formal workshop format to analyze the causes of the inferior quality of builders' hardware. The authors established the causes of defects in window hardware construction in relation to the three aspects of system, design, and construction as involving the following seven factors: lack of system (including low ability to create construction specifications); low social awareness of the importance of window hardware; low technical capability to create design drawings; low design costs; small manufacturing capacity; low construction cost; and short duration of construction. Among the seven causes, the biggest cause of defects in window hardware construction is the lack of a system (low ability to create construction specifications), followed by low technical capability to create design drawings. In addition, this study carried out basic research to create measures to prevent defects in window hardware construction by analyzing how such causes of defects are distributed depending on the scale of architectural firms and construction companies during actual projects.
Dynamic and Durability Properties of the Low-carbon Concrete using the High Volume Slag
Moon, Ji-Hwan ; Lee, Sang-Soo ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 351~359
DOI : 10.5345/JKIBC.2013.13.4.351
Blast furnace slag (BFS) have many advantages that are related to effective value improvement on applying to concrete while side effects of blast furnace slag also appear. Thus, research team conducted an experiment with high volume slag to see if the attribute of waste alkali accelerator for mixing rate, mixed use of NaOH and
, and early strength agent for mixing rate for replacement ratio and for the types of the stimulants in order to increase the use of blast furnace slag1s powder. As the result of the experiment, when it comes to compression strength, all of the alkali stimulants have been improved as the replacement rate increases except for sodium hydroxide. Among the alkali stimulants, sodium silicate was high on dynamic elastic modulus and absorption factor. In case of early strength agent, the mix of mixing 1.5% and blast furnace slag 75% have showed high strength enhancement. In event of Waste Alkali accelerator, it has showed different consequences for each experiment.
Impact of Balance between Productivities on Repetitive Construction Projects
Shim, Euysup ; Yoo, Wi Sung ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 360~371
DOI : 10.5345/JKIBC.2013.13.4.360
Fast delivery of construction projects provides more value to project owners. Batch production, which is production not in single pieces, but in batches, is a common approach in repetitive construction projects such as multi-unit residential building construction projects. In batch production, the use of a small batch size allows the early start of subsequent activities, and thus can lead to early completion of projects. In addition to batch size, balance between productivities in construction activities can affect project duration. However, the impact of the balance between productivities with regard to their order on project duration has not been studied. The main goal of this study is to test a hypothesis, which is that the order of construction activities' unbalanced productivities affects the amount of time reduction that can be achieved by using a small batch size. A computer-based simulation model was developed, and five different cases were simulated to test the hypothesis. The conclusion of the simulation result is that the order of productivities does not affect the time reduction achieved by using a small batch size. It is expected that the findings of this study can help general contractors make decisions in terms of batch size.
A Case Study on Productivity Analysis and Methods Improvement for Masonry Work
Chang, Chul-Ki ; Yoo, Wi Sung ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 372~381
DOI : 10.5345/JKIBC.2013.13.4.372
In the construction industry, a great deal of research has been focused on productivity improvement because a minor change in labor productivity can often make the difference between a profit and a loss. This study shows how productivity measurement methods can be applied in practice, step by step, to analyze and identify potential problems both in productivity and methods performance for masonry work. A work sampling technique was conducted to determine the nature and extent of an observable activity as an aid to measuring overall performance. Also, a method productivity delay model was used to identify non-productivity in individual cycle times. From the work sampling technique, it was found that the masonry crew had a Labor Utilization Factor of 47.1%, and from the videotape analysis, it was found that the material and dumpster location need to be adjusted to reduce the travelling distance. We have found that efforts to improve the productivity of masonry work should be focused almost exclusively on machine and labor delays, based on the result from the method productivity delay model.
Study on Residential Environment Improvement Directions of Different Housing Types through an Analyses on Expected Value and Perceived Value
Jin, Hyun-Soo ; Kim, Kyong-Hoon ; Kim, Jae-Jun ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 382~390
DOI : 10.5345/JKIBC.2013.13.4.382
Recently, the housing problem has been recognized as a matter of housing supply with a certain environmental level and not simply a matter of handing as a quantitative problem, and the demand for pleasant residential environments and requirements for residential environments are increasing more and more. However, it is necessary to establish the directions for improvement of the residential environment according to the house type, as the requirements and levels of satisfaction differ. This study aimed to deduce the level of resident satisfaction with the residential environments according to house type, and determine the direction for improvement of the residential environment. To achieve this, the difference between the house types was analyzed through ANOVA analysis and T-Test, and the major factors on the improvement direction of the residential environment were derived through Action-grid analysis.
An Experimental Study on Early Strength and Drying Shrinkage of High Strength Concrete Using High Volumes of Ground Granulated Blast-furnace Slag(GGBS)
Yang, Wan-Hee ; Ryu, Dong-Woo ; Kim, Woo-Jae ; Park, Dong-Cheol ; Seo, Chee-Ho ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 391~399
DOI : 10.5345/JKIBC.2013.13.4.391
For high strength concrete of 40~60 MPa, the effects on the early strength and concrete dry shrinkage properties replacing 60~80% of Ordinary Portland Cement with Blast Furnace Slag Powder and using the Alkali Activator (Modified Alkali Sulfate type) are considered in this study. 1% Alkali Activator to the binder, cumulative heat of hydration for 72 hours was increased approximately 45%, indicating that heat of hydration contributes to the early strength of concrete, and the slump flow of concrete decreased slightly by 3.7~6.6%, and the 3- and 7- strength was increased by 8~12%, which that the Alkali Activator (Modified Alkali Sulfate type) is effective for ensuring the early strength when manufacturing High Strength Concrete (60%) of Blast Furnace Slag Powder. Furthermore, the dry shrinkage test, both 40 MPa and 60 MPa specimens had level of length changes in order of BS40 > BS60 > BS60A > BS80A, and the use of the Alkali Activator somewhat improved resistance to dry shrinkage.
Transition Analysis of Friction Factor According to Pumping Pressure in Pumping Test Using High Strength Concrete for High-rise Buildings
Kwon, Hae-Won ; Kim, Young-Su ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 400~406
DOI : 10.5345/JKIBC.2013.13.4.400
In high-rise buildings, high-strength concrete is widely used to reduce the section of structure members under axial load. Also, the price increase of materials is very important item in the high-rise buildings. Especially, concrete used high-pressure pump due to consecutive structural assembly. Unlike slump type of ordinary concrete, high strength concrete has different properties of concrete pumping due to viscosity. However, there have been no Korean studies on the pumping properties of high strength concrete. Therefore, this paper measures the friction factor of high strength concrete with changes in the pressure of concrete pumping. We analyzed the trends of the friction factor based on changes in the pressure of concrete pumping, and then calculated the quantity of concrete deposited for each specified concrete strength and location of placement. After comparing these results with the quantity of concrete deposited measured in field, we evaluated the pumping properties of high strength concrete. Through the tests and the review, we attempt to suggest some basic information for the In-Situ application of high strength concrete.
Fundamental Study on the Strength Development of Cement Paste using Hardening Accelerator and High-Early-Strength Cement
Min, Tae-Beom ; Cho, In-Sung ; Lee, Han-Seung ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 407~415
DOI : 10.5345/JKIBC.2013.13.4.407
The purpose of this research is to verify the performance of hardening accelerator in cement paste through mechanical performance evaluation and micro structure analysis on hardening accelerator for development of super high early strength concrete. The research results showed that hardening accelerator produced
when hydrated with cement, enhancing the degree of saturation of Ca ion by using differential thermal analysis. Moreover, porosity was reduced rapidly as capillary pores were filled by hydration products of
. According to the experiment using hydration measurement testing, when 1% and 3% of accelerator were mixed, hydration rate increased toward the second peak point compared to high early strength cement, before the first peak point disappeared. It turned out that adding accelerator accelerated the hydration rate of cement, especially
. The shape of C-S-H is shown depending on the amounts of accelerator added and the production and age of
by using SEM to observes hydration products. Therefore, it's evident that hardening accelerator used in this research increases amounts of
, it is effective for the strength development on early age.
Performance assessment model for robot-based automated construction systems
Lee, Ung-Kyun ; Yoo, Wi Sung ; An, Sung-Hoon ; Doh, Nakju ; Cho, Hunhee ; Jun, Changhyun ; Kim, Taehoon ; Lee, Young Hoon ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 416~423
DOI : 10.5345/JKIBC.2013.13.4.416
An adjusted assessment model based on benefit-cost analysis (BCA) is proposed for evaluating the economic efficiency of automated construction technologies. In contrast to conventional BCA, the model does not compare monetary values, but the differences in benefits and costs between traditional and automated construction methods. To verify the usefulness of the model, it was applied to a real-scale building construction project that used a fully automated building construction system, and the face validity of the model was confirmed. The results indicate that the model can support decision makers in identifying valuable benefit factors and in assessing the cost effectiveness of the system.
Analysis of the Risk Influence Factors in Apartment Building Development Projects
Lee, Sung-Ho ; Kim, Sun-Kuk ; Suh, Sang-Wook ;
Journal of the Korea Institute of Building Construction, volume 13, issue 4, 2013, Pages 424~433
DOI : 10.5345/JKIBC.2013.13.4.424
There have been few attempts made to perform a systematic analysis of the various risk influence factors in building development projects. This study suggests an analysis of the risk influence factors in the process of feasibility studies for apartment building development projects. To reflect the voice of professionals, surveys were carried out. In addition, an FD-AHP method was applied to identify the importance of the risk influence factors. Through the surveys, major risk factors were separately identified as direct and/or indirect elements. An analysis of risk influence factors supports an effective feasibility study of apartment building development projects.