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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 15, Issue 6 - Dec 2015
Volume 15, Issue 5 - Oct 2015
Volume 15, Issue 4 - Aug 2015
Volume 15, Issue 3 - Jun 2015
Volume 15, Issue 2 - Apr 2015
Volume 15, Issue 1 - Feb 2015
Selecting the target year
Foamed Concrete with a New Mixture Proportioning Method Comparable to the Quality of Conventional ALC Block
Yang, Keun-Hyeok ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 1~7
DOI : 10.5345/JKIBC.2015.15.1.001
The objective of this study is to develop a high-performance foamed concrete made with a new mixture proportioning as an alternative of autoclaved lightweight concrete (ALC) block. For the early-strength gain of the foamed concrete under an atmospheric curing condition, the binders and chemical agents were specially contrived as follows: 3% anhydrous gypsum was added to ordinary portland cement (OPC) in which
content was controlled to be above 60%; and the content of polyethylene glycol alkylether in a polycarboxylate-based water-reducing agent was modified to be 28%. Using these binders and chemical agents, 11 mixes were prepared with the parameters of W/B ratio (30% to 20% in a interval of 2.5%) and unit binder content (
in a interval of
). The quality and availability of the mixed foamed concrete were examined according to the minimum requirements specified in the KS for ALC block and existed conventional foamed concrete. The measured properties satisfied the minimum requirement of KS for ALC block and proved that the developed high-performance foamed concrete had considerable potential for practical application.
The Surface Sealing Performance of Film, Air cap and Polystyrene foam for Preventing Carbonation of High-Volume Slag Concrete
Han, Dongyeop ; Kim, Kyunghoon ; Han, Min-Cheol ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 9~16
DOI : 10.5345/JKIBC.2015.15.1.009
The goal of this research was evaluating and suggesting the solution of preventing carbonation of concrete replaced high-volume of slag. The concrete mixtures were prepared with high-volume slag and recycled aggregate, and the concrete samples were evaluated the carbonation depth with various surface treatment methods. For various surface treatment methods and surface protecting sheets, bonding strength and carbonation depth were measured. Basically, from the results, the carbonation of concrete was completely prevented with any type of surface treatment method and surface protecting sheet as far as the surface treatment materials were remained. Therefore, in this research, it was known and suggested that the easiness of handling and sufficient bonding performance was much important than the quality of surface protecting sheets.
Effect of Partial Replacement of Water with Photosynthetic Bacteria on the Level of CO
Absorption in Mortar
Joung, Jae-Ho ; Lee, Gun-Cheol ; Yoon, Seung-Joe ; Joe, Jae-Heung ; Choi, Jung-Gu ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 17~23
DOI : 10.5345/JKIBC.2015.15.1.017
In this research, the
absorption performance of mortar was investigated. The level of
absorption in mortar with various binders including cement and nonsintered cement was examined. As a result for the mortar with photosynthetic bacteria, the compressive strength was similar to the one without the bacteria at early age but decreased at the age of 28 days. However, for the
absorption, with photosynthetic, the performance of the mortar with OPC, and nonsintered cement deceased to 21%(234 ppm) and 19.7%(243 ppm) respectively after 12 hours age.
Effect of Hardening Accelerators on the Adiabatic Temperature property Properties of Precast Concrete and FEM analysis for Evaluating the Crack Performance
Min, Tae-Beom ; Cho, In-Sung ; Mun, Young-Bum ; Lee, Han-Seung ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 25~33
DOI : 10.5345/JKIBC.2015.15.1.025
In this study, initial crack index was evaluated by FEM analysis to find the crack propagation from hydration heat in precast concrete. As results, as the usage of hardening accelerator increased, initial compressive strength increased and setting time was shortened. Additionally, as amounts of hardening accelerators increased, the central temperature of concrete increased and the time to reach the highest temperature was shortened. It was demonstrated that the hardening accelerators accelerated the hydration reaction of cement, and caused the increase of hydration heat within the short period of time. Furthermore, the crack index for evaluating the heat level was performed by FEM. As results, there was no problem about the cracks, despite of the growth of initial high hydration heat. This is because of the increased tensile strength that is large enough to sustain the thermally induced-stress.
Experimental Improvement of the Dropping Test for Evaluating the Appropriate Level of Water Content Ratio in Rammed Earth Method
Lee, Jong-Kook ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 35~42
DOI : 10.5345/JKIBC.2015.15.1.035
Although the interest for earth architecture has been expanded and settled as a part of modern architecture, precisely calculating the ratio of water content in practice is still difficult and the calculation is based on empirical analysis yet. This causes many problems in durability and maintenance of earthen architecture. Therefore, this study investigated to find the easiest way to correctly calculate the appropriate level of water content ratio (AWCR), which can be used in practice. Until now, the workers have checked the AWCR based on their own experience with popular but vague manuals. On this awareness, we studied the several testing methods and found the dropping test which uses the pattern of shape after the sample is dropped. In this point, we studied and developed the definite testing method in terms of process, and shape discrimination. Also we suggest the test recording sheet by using the cobalt chloride(
) whose color is instantly changed when contacts with the moisture. It is believed that this result can help improving the quality and durability of the earthen architecture using the rammed earth method and the efficiency in practice.
An Analysis of the Current State of Window Constructions in Small-scale Private Architecture in Consideration of the Energy Consumption Efficiency Rating System
Kang, Suk-Pyo ; Jin, Eun-Mi ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 43~51
DOI : 10.5345/JKIBC.2015.15.1.043
At present, in the case of small and medium window manufacturers in South Korea, glazing and window frame manufacturers are divided into separate businesses. However, in the fenestration energy consumption efficiency rating system and the energy-saving design criteria for buildings, the coefficient of overall heat transmission standard for windows is defined by window sets, which integrate glazing and window frames. At most construction sites, windows are constructed by installing separately supplied glass and frames. Research that can integrate the reality and the system is therefore necessary. The present study first investigated and analyzed the on-site situation of the fenestration energy consumption efficiency rating system. According to the results, while overall understanding of the fenestration energy consumption efficiency rating system was high, satisfaction with it was low, and the general practice at construction sites was to use windows assembled on site rather than integrated window systems manufactured at factories, thus making it difficult to confirm that the current rating system was well applied on site. Consequently, the reality of industrial sites must be reviewed and a realistic alternative to the fenestration energy consumption efficiency rating system must be presented instead of focusing on theory.
Revitalizing Plan for Public Using Building through Current Status Survey in Rural Residential Area
Park, Jun-Mo ; Kim, Ok-Kyue ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 53~64
DOI : 10.5345/JKIBC.2015.15.1.053
A demand of public using building in rural residential area changes over times. With the changes, the function and the scale of the public using building are also changed, the building is more influences on people in rural area. However, the most of facilities have been focused on the agricultural productions, and thus the facilities of health care, culture, and daylife supporting were not enough comparing to the facilities in urban area. This study surveys the facility and grasps the current status and problem of 37 rural residential area. In addition, three different revitalizing plans of public using building as a current availability and plan for use are suggested. A new community center where is expected that the public usage is increased should be managed intensively regarding an air conditioning, and waterproofing work, while an old community center and the warehouse where are expected that the public usage is decreased, but have locational advantage should be used as a rural life experience facilities and a accommodations with remodeling unless the safety matter A parking lots are considered that the availability is gradually increased and needed for public while it is difficult to get a new available site because of the ownership. Therefore, it is national decision to secure the site by removing the discarded facilities.
Interaction Analysis between Construction Business Indicators and Business Performance Indicators of Specialty Contractors providing Labor and Small Sized Equipments
Kim, Nam-Sik ; Lee, Dong Wook ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 65~71
DOI : 10.5345/JKIBC.2015.15.1.065
This study suggests business strategies by interaction analysis of indicators related construction business and business performance for specialty contractors that provide labor, materials and small sized equipments. To do this research, the data was analyzed for construction orders and business performance indicators of specialty contractors with KRW 7 bil. or more of assets during 1997 through 2010. For specialty contractors that provide labor, materials and smaller sized equipments, the amount of construction orders affects profitability the most and therefore some sort of strategy needs to be established to respond to decrease in operating margin due to dwindling construction orders. In other words, it is determined that increase in the amount of construction orders enhances operation of gross assets as well as the operating margin, ultimately increasing the profitability.
Compliance Status of OSH Expense Regulation by Client Types and Project Amount
Yi, Kyoo-Jin ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 73~79
DOI : 10.5345/JKIBC.2015.15.1.073
Legislated in 1988, the Occupational Safety and Health Expenses Criteria, has been giving a positive impact on improving the safety of construction sites. Previous researchers have been insisting that the rate is not enough to ensure the safety and health of the construction site. However, according to Korea Gallup's survey of more than 1000 construction sites in 2012, the respondents replied that large number of them did not comply with the criteria of the Occupational Safety and Health Expenses. This study analyses the completed works cost statistics of construction projects to figure out the compliance rate of the criteria. This study confirmed that the compliance rates are substantially low in most types of clients and the result is expected to be used in future research on appropriate safety and health expenses rate and on improving compliance rate of the criteria.
Improvement on the Non-standardized Name Use of Chinese Granite for Korean Building Constructions
Kim, Jae-Yeob ; Lee, Ung-Kyun ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 81~87
DOI : 10.5345/JKIBC.2015.15.1.081
The purpose of this study is to analyze the problem of confusing the names of Chinese granite used in Korean construction work and suggest the improvement plans for them. Interviews of the experts from the stone company, studies on the existing research literature, and analyses of construction work documents of the 23 construction works which used Chinese granite were carried out to analyze the real condition of name confusion of granite stone. In the analytical result of the real condition, name confusion was classified into 4 types and problems derived from it were done into 4 ones. An additional survey was carried out targeting 34 masonry experts to draw the improvement plans based on the analytical results of the real condition of name confusion. The results show that the most fundamental solution is to continue to make efforts to use exact names when main agents related to construction works communicate with each other regarding Chinese granite stone and the process to make out construction contract documents.
Effects of the Methods for Generating and Selecting Multiple Preliminary Prices on Budget Prices in Bidding Processes
Kang, Minseok ; Riew, Moon Charn ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 89~97
DOI : 10.5345/JKIBC.2015.15.1.089
In bidding processes conducted by government agencies, local governments or public agencies, budget prices are critical to both ordering bodies and bidders since budget prices are bases for selecting a successful bidder. Since a high budget price goes against ordering bodies and a low one goes against bidders, most ordering bodies adopt a system using multiple preliminary prices for determining a budget price to ensure fair and transparent manners. Discussed are how budget prices change depending on the methods of sampling 15 preliminary prices and the methods of sampling 4 out of 15 prices. Computer simulation is conducted to analyze budget prices for various methods to determine multiple preliminary prices. It is more likely for budget prices to be close to base prices when splitting a range of generating preliminary prices into 15 intervals and taking 4 preliminary prices from 15 intervals than when taking 4 preliminary prices from a whole range. In cases when splitting a range of generating preliminary prices, if we take 2 preliminary prices out of intervals above 100% and take 2 out of intervals below 100%, the expected budget prices are equal to a base price and the standard deviations are about half in comparison with those when taking 4 out of 15 intervals.
Forecasting Development Directions on Environment-Friendly Building Science for Energy Saving by Analyzing Patent Trend
Kang, Kyi-Young ; Kim, Gwang-Hee ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 99~105
DOI : 10.5345/JKIBC.2015.15.1.099
The building structure has an decisive influence on the environment as it takes over one third part in the energy consumption and greenhouse gas emissions of whole world. Accordingly, every country makes the reduction of greenhouse gas emission compulsory pursuant to Kyoto Protocol of 1997, and Korea government makes an announcement for the improvement of building energy performance in 2014. In this study, the key technology of Energy Saving Environmental-Friendly Building is sorted into 3rd categories, and the analysis of patent trend for patent documents published in Korea, USA, Japan and Europe is carried out. The purpose of this study is to solve the problem of current technology that it cannot show the detailed situation of technique and development strategy of R&D, and to provide a systematic approach for R&D strategy and an exact technology development direction.
Application of Accelerometer for Quantitative Mechanical Evaluation of Assembly and Disassembly Properties of Building
Ahn, Jaecheol ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 107~113
DOI : 10.5345/JKIBC.2015.15.1.107
Recently mechanization construction methods are developed rapidly in the field of construction processing. The construction industry is one of the sector that still requires a lot of manual labor of the entire industry. There are still various kinds of work done by human labors, especially in the disassembling and separation of materials for recycling. However, database of relevant statistics including estimating standards are difficult to analyze by actual human workload, and furthermore the disassembling processes are being analyzed by qualitative assessment. This study attempted to introduce the accelerometer for the quantitative evaluation of human workload in the construction field. Still, it is possible to calculate the amount of energy which is required for the assembling and disassembling of nail and screw through three-dimensional accelerometer.
Application and Effects Analysis of BIM(Building Information Modeling) for Construction Management of a Construction Field
Choi, Jaehyun ; Ryu, Han-Guk ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 115~121
DOI : 10.5345/JKIBC.2015.15.1.115
As recent buildings have been enlarged and free-formed, it is hard to represent three-dimensional buildings with two-dimensional drawings and identify design errors, construction errors, difference of construction quantity and construction cost, clash with columns, beams, pipe machinery, and so on. In order to overcome the limitations, BIM(Building Information Modeling) has been used in construction industry. However, BIM in the construction site is not fully facilitated after practical implementation in process control including training, evaluation and analysis of the process. Therefore, in this study, the effect of BIM applied in the construction site is analyzed empirically throughout the survey at the construction site in accordance with the training, evaluation, and implementation of BIM.
Analysis on the Characteristic of Living Noise in Residential Buildings
Shin, Jaemin ; Song, Hyomin ; Shin, Yoonseok ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 123~131
DOI : 10.5345/JKIBC.2015.15.1.123
The purpose of this study is to analysis the noise characteristics about noise type, sound level, and noise occurrence frequency of living noise in residential buildings. The field measurement was conducted to classify the types of living noise and to examine the actual states of noise occurrence for each living noise source. Among the 24 types of living noise, 10 noise sources were selected based on the loudness and frequency of each living noise. The result indicated that 10 noise sources show the difference on each noise occurrence characteristic by time zones. Therefore, to reduce noise, a management plan should be introduced based on the actual state of the noise occurrence, considering the individual noise source and the time slot during noise frequently occurs. Moreover, the noise standard for each noise types of living noise should be specificated and the education for residents about characteristics of living noise types should be conducted to improve the consciousness of residents.
The Effect of Floor Slipperiness on Gait Characteristic
Kim, Tack-Hoon ; Han, Seok-Kyu ; Choi, Soo-Kyung ;
Journal of the Korea Institute of Building Construction, volume 15, issue 1, 2015, Pages 133~141
DOI : 10.5345/JKIBC.2015.15.1.133
The floor slipperiness is an essential property for the pedestrian safety. This study was conducted to develop the slip test apparatus to be well accorded with actual characteristics of human gait; and the correlation between RCOF (Required coefficient of friction), Rz (Surface roughness), and 3 coefficients of slip resistance (C.S.R (Coefficient of slip resistance), BPN (British pendulum number), and SCOF (Static coefficient of friction)) were analyzed. Result of the analysis revealed that the cadence, stride length, and step length were proportional to the walking speed, and the significant correlation between walking speed and RCOF was found. However, the correlation between RCOF and the other respective coefficients of slip resistance was almost unidentified thus it would be difficult to identify the actual property of floor slipperiness with the RCOF alone.