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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
The Effect of Heat Curing Methods on the Protection against Frost Damage at Early Age of the Concrete Under Extremely Cold Climate
Jung, Eun-Bong ; Shin, Hyun-Sup ; Han, Min-Cheol ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 513~521
DOI : 10.5345/JKIBC.2013.13.6.513
This study aimed to examine whether heat curing methods of concrete subjected to
could be effective by varying the combination of heating cable and surface heat insulations. Three different concrete specimens incorporating 30% fly ash with 50% W/B were fabricated to simulate wall, column and slab members with dimensions of
mm for slab,
mm for wall and
mm for column. For heat curing combinations, Type-1 specimens applied PE film for slab, plywood for wall and column curing. Type-2 specimens applied double layer bubble sheet (2LB) and heating coil for slab, and 50 mm styrofoam for wall and column curing. Type-3 specimen applied 2LB for slab, electrical heating mat for wall and column inside heating enclosure. The test results revealed that the temperature of Type 1 specimen dropped below
beginning at 48 hours after placement due to its poor heat insulating capability. Type 2 and 3 specimens maintained a temperature of around
after placement due to favorable heat insulating and thermal resistance.
Surface Finishability of Concrete According to Degree of Damage and the Number of Uses of the Aluminum Form
Noh, Sang-Kyun ; Lee, Seung-Hoon ; Han, Cheon-Goo ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 522~529
DOI : 10.5345/JKIBC.2013.13.6.522
As concrete forms, panel forms made of plywood used to be widely used, but recently a system form made of aluminum has been broadly adopted because of the advantages it offers in terms of constructability and economy. However, an aluminum form reacts with concrete, which is alkali, and creates hydrogen gas. As a result, air pockets occur on the concrete`s surface, and its finishability deteriorates. Therefore, this research analyzed the relationship between the distribution of voids and surface roughness and the damage degree and number of uses of the aluminum form. The analysis of the distribution of voids shows that the number of voids of 0.1~1 mm, which are considered to have occurred because of chemical reaction, was 200~500 on the coating plywood, but was 1 500~2 000 on the aluminum form after 3 uses, and impossible to count after a higher number of uses. Surface roughness was
on the coating plywood form, but was about
after the first use and about
after 10 uses, a 2.6-fold increase. Distribution of voids did not show a particular tendency depending upon the degree of damage to the concrete form, but surface roughness showed an increasing tendency as the degree of damage grows. Therefore, when using aluminum forms, surface maintenance should be carried out completely, such as prevention of damages to the form surface coating materials and spreading of separating materials on forms.
A Weight Analysis for Measuring the Management Performance of Strategic Business Units of Large Construction Companies
Lee, Dong-Hoon ; Park, Hye-Sung ; Kim, Jung-Chul ; Kim, Sun-Kuk ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 530~540
DOI : 10.5345/JKIBC.2013.13.6.530
The business environment that affects the management performance can be characterized by each Strategic Business Unit (SBU) since construction companies win overseas contracts due to the fairly good construction situations while experience a decline in the local housing market. Environmental changes can alter the strategic importance of the SBU when measuring the management performance. However, large construction companies apply BSC (Balanced Score Card) for collective calculation to determine the management performance, making it difficult to reflect the strategic importance of SBU. This method may create a distorted image of management performance that fails to take environmental changes into consideration, and as such it needs to be improved. Yet, there are no studies on the weight of each SBU considering environmental changes. Thus, the current study intends to analyze the weight of SBU for company-wide measurement of the performance of large construction companies. In addition, a model for analysis of SBU importance is proposed to respond to the constantly changing environmental situations and to modify the weight. For analysis of SBU weight, a questionnaire was conducted with 23 experts and hands-on workers, and the questionnaire result was quantitatively analyzed by applying the FD-AHP method. It is expected that the result will enable a model to be proposed to calculate the weight per division in a manner that reflects environmental changes and minimizes strategic distortion when measuring the management performance of large construction companies.
Life Cycle Costing: Maintenance and Repair Costs of Hospital Facilities Using Monte Carlo Simulation
Kim, Tae-Hui ; Choi, Jong-Soo ; Park, Young Jun ; Son, Kiyoung ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 541~548
DOI : 10.5345/JKIBC.2013.13.6.541
During the administration of a construction project, various types of participants are engaged in the project. From the design phase to the maintenance phase, these participants may confront many risks. To avoid these risks, participants should utilize an insurance company or a bond company. The types of risks and liability that a construction manager may face are listed in the construction law or contract. But there are some arguments related to risk transferring and the content of risks. For this reason, construction managers must carefully consider any possible risks in the contract and the construction law. Therefore, for construction managers to deal with risks appropriately, the introduction of a legal requirement to carry professional liability insurance, a defined compensation range for damages, a method of guarantee in the event of defects, a defined compensation claim period for damage, and a method of damage claim were suggested in this study.
An analysis of the utilization of defect deposits for apartment complexes
Seo, Deok-Seok ; Lee, Ung-Kyun ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 549~556
DOI : 10.5345/JKIBC.2013.13.6.549
This study analyzed the actual use of defect deposits for financing long-term expenses (that is, expenses incurred within 4-10 years of building completion) and for financing short-term expenses (that is, expenses incurred within 3 years of building completion). Therefore, 36 cost data on the expenses financed out of defect deposits for apartment complexes were collected from construction companies and analyzed using statistical methods. The findings revealed that 62.6 percent of defect deposits were spent to resolve actual defects, and 37.4 percent were spent resolving resident complaints. Furthermore, these results are valid regardless of the location of the complexes. As such, these results could be of significance when establishing or revising regulations regarding the repair of the long-term defects of apartment complexes.
Method to Acquire Safety of Work Spaces by Ensuring Proper Ratio of Visibility of Unsafe Factors in Building Construction Sites
Choi, Heebok ; Jang, Myung-Houn ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 557~564
DOI : 10.5345/JKIBC.2013.13.6.557
Unsafe and dangerous factors or environments on building construction sites often cause safety accidents. Sometimes, accidents happen despite the existence of warning and caution signs. Such warning signs are likely to be hidden by stacked materials or temporary facilities on site. If workers cannot see the signs when moving or working, they could be injured, sometimes fatally. Many studies have focused on each worker`s position, and various systems have been developed using GPS signals and sensors. This paper suggests a method for identifying the problem of worker inability to see the unsafe factors, to manage the problem in the construction planning phase by considering things from the worker`s perspective. The method uses CAD software to investigate the relation between the height of stacked materials and the visible ratio of the unsafe factor. The results of a sample project show that the changes in the height and location of stacked materials make the site safer.
An Algorithm for Scheduling Repetitive Projects with Resource Continuity and Different Batch Sizes
Shim, Euysup ; Yoo, Wi Sung ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 565~578
DOI : 10.5345/JKIBC.2013.13.6.565
Batch production is common in repetitive construction projects, and it is not unusual for different batch sizes to be used by contractors in one project. While several scheduling methods, such as the Linear Scheduling Method (LSM) and the Repetitive Scheduling Method (RSM) have been proposed and used, no mathematical method for repetitive construction projects has been developed, and it is difficult to consider different batch sizes with the existing methods. An original mathematical algorithm for scheduling repetitive projects with different batch sizes is proposed in this study. This algorithm is illustrated with assumptions of resource continuity and single path in a project and introduces new terms, control batch and critical batch. The algorithm logics and mathematical equations are validated by comparison with the outcomes from a graphical scheduling approach through a simple and practical hypothetic project. As a result, it is expected that the proposed algorithm can be easily adapted and extended to computer software for scheduling, and can be a starting point for research on batch size management in repetitive construction projects.
Assessment of the Electromagnetic Pulse Shield Effectiveness of the Wave-guided Below Cutoff Filled with Water and Oil for Guaranteeing the Operational Sustainment of the Command Post
Yoon, Sangho ; Son, Kiyoung ; Kim, Suk Bong ; Park, Young Jun ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 579~584
DOI : 10.5345/JKIBC.2013.13.6.579
The stable fueling and water supply should be prerequisites to guarantee the operational sustainment of military command post. Meanwhile, in terms of the operational sustainment, it is verified that the current wave-guided below cutoff (WBC) system cannot satisfy the requirement of control associated with water supply and fueling within the command post. In this study, as the dielectric substance can block electromagnetic pulse (EMP), it was tried to identify the shielding effectiveness of the multi WBCs filled with water and diesel for attenuating the EMP effect using experiment based on the MIL STD 188-125-1. According to the experimental results, used water in the experiment show the shielding effectiveness from around 640 MHz frequency because of minerals contained in the water. Furthermore, it was noted that EMP attenuating strength of the WBC filled with diesel was enlarged from around 1,680 MHz frequency. Resultingly, it could be concluded that it is enough to supply stable water and diesel through the multi WBC to block EMP within the military command post for guaranteeing the military operations sustainment.
Development of LCC-LCA Integrated Analysis Model for Efficiency
Ahn, Hye-Ryeon ; Lim, Jin Ho ; Huh, Young-Ki ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 585~593
DOI : 10.5345/JKIBC.2013.13.6.585
For a successful construction project, systematic and objective decision-making is a prerequisite from the planning and designing stages. However, previous LCC analysis methods have focused only on simple cost savings and the accompanying economic efficacy while missing the environmental aspects of a structure. Although recently, a new approach of integrated
analysis has been introduced, which is more advanced than the existing simple LCC methods, it is difficult to collect all of the data necessary for each evaluation item since the product-specific cost is not presented under the LCC. In this research, cost evaluation items were selected by relatively high weights and items with heavy influence over a decision-making process in order to suggest an LCC-LCA integrated analysis model that is useful in comprehensively assessing the economic cost and environmental cost throughout the whole life cycle of a structure. The developed LCC-LCA integrated analysis model was applied to actual practices and compared with previous methods to test the model`s effectiveness.
The Effect of Chemical Admixtures on Removal of Scattered Dust
Son, Ho Jeong ; An, Jung Min ; Chung, Chul-Woo ; Lee, Jae-Yong ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 594~601
DOI : 10.5345/JKIBC.2013.13.6.594
One of the important problems associated with building demolition is the dust generated during the work. The only way to reduce the demolition dust is to use a dust net during water spraying. However, it is difficult to supply the necessary amount of water to remove demolition dust, thus making it difficult to apply this method on a demolition site. This work attempted to find an alternative approach to dust removal by incorporating surfactant and high range AE water reducer in the water being sprayed. Through the experiment, it was found that the addition of surfactant did not contribute to the removal of demolition dust. However, the use of high range AE water reducer showed better performance than spraying plain water, indicating that some amount of demolition dust had been adsorbed on the high range AE water reducer.
Effect of Fine Particle Cement and Recycled Aggregates as Alkali Activator on the Engineering Properties and Micro-Structure of High Volume Blast Furnace Slag Concrete
Han, Min-Cheol ; Lee, Hyang-Jae ; Han, Cheon-Goo ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 602~608
DOI : 10.5345/JKIBC.2013.13.6.602
The aim of this study is to investigate experimentally the effect of the combination of fine particle cement with high Blaine fineness (FC) and recycled aggregates on the engineering properties and micro structure of high volume blast furnace slag (BS) concrete with 75% BS and 21 MPa. FC manufactured by particle classification at the plant with Blaine fineness of more than
was used as additional alkali activator for high volume blast furnace slag concrete made with recycled fine and coarse aggregates. FC was replaced by 15, 20 and 25% OPC. Test results showed that the incorporation of FC resulted in an increase in the compressive strength compared to BS concrete without FC by as much as 30% due to accelerated hydration and associated latent hydraulic reaction. It was found that the use of FC and recycled aggregates played an important role in activating BS for high volume BS concrete by offering sufficient alkali.
Development and Evaluation of Fixation Equipment for Transporting Unit Modules
Park, Su-Yeul ; Kim, Kyoon-Tai ; Park, Nam-Cheon ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 609~618
DOI : 10.5345/JKIBC.2013.13.6.609
The unit modular construction system is a building technique in which unit modules are manufactured at a factory and then assembled at the construction site. It has many benefits, including reduction of the construction period and improvement in quality. For this reason, it is utilized for various purposes in Japan and England. While it has been introduced in Korea, there have been few Korean studies conducted on the unit modular system. In particular, little research has been done on the method of safely fixating the unit modules to a truck. Therefore, this study reviewed the fixation methods of unit modules for transport, analyzed the problems, and designed a fixation device for unit modules. In addition, a device for the fixation of unit modules to a truck was developed, and a structural simulation was implemented for a safety test by considering the maximum stress generated during the transport of the unit modules fixed on a truck. When the device for the fixation of unit modules is manufactured based on the results of the structural simulation done in this study, it is expected to aid the development of a more practical fixation device for unit modules.
Development of Construction Information Management Module through the Use of Vector-Photo
Kim, Kyoon-Tai ; Lim, Myung-Gu ; Kim, Gu-Taek ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 619~626
DOI : 10.5345/JKIBC.2013.13.6.619
Many pictures are taken at a construction site, but the information of the pictures is not managed in an efficient and systematic manner. For this reason, when a construction worker has scant field experience or knowledge, it is hard to communicate with others efficiently. Therefore, the information of the pictures taken is not fully utilized in any deliberation or conflict among interested parties, facilities maintenance, and construction of another structure, although they were taken for those purposes. This study discusses the need for combining vector-photos with image and 5W and 1H information, and develops a prototype module for creating vector-photos and saving them in a server. The vector-photos taken can be saved to a server in real time, and efficiently managed by a DB system. If a system to link the vector-photos with a BIM model is developed in the future, it is expected that the vector information in the picture can be connected with the property information of an object. As a result, the vector-photos can be utilized in more diverse ways.
Mock up test and Field Application of Black Concrete Applying Superplasticizer containing Carbon Amino Silica Black
Hong, Seok-Min ; Han, Min-Cheol ;
Journal of the Korea Institute of Building Construction, volume 13, issue 6, 2013, Pages 627~633
DOI : 10.5345/JKIBC.2013.13.6.627
This paper presents the result of a mock-up test and field application of concrete that is black in color thanks to the application of superplasticizer containing carbon amino silica black (CASB-SP). Mock-up specimen with a size of
mm was fabricated with black concrete applying 0.5% of CSAB-SP with 27 MPa. After dividing the zone in wall mock-up specimen, three different water repelling agents were applied to verify its effect of efflorescence prevention. It was found that the use of CASB-SP with 0.5% made the black concrete develop a highly clear black color, and the epoxy type water repelling agent had better performance in efflorescence prevention. Based on mock-up test, field application was conducted with bridge member. It was also found that the application of CASB-SP showed favorable results in black color development.