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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
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Volume & Issues
Volume 16, Issue 4 - Aug 2016
Volume 16, Issue 3 - Jun 2016
Volume 16, Issue 2 - Apr 2016
Volume 16, Issue 1 - Feb 2016
Selecting the target year
Heating Experiment of Fireproof Board using the Dry Process Bottom Ash and Oyster Shell
Jung, Ui-In ; Kim, Bong-Joo ; Kim, Jin-Man ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 193~199
DOI : 10.5345/JKIBC.2016.16.3.193
This study is a research about performance of fireproof board using industrial waste such as oyster shell and dry process bottom ash through the heating test and conclusions were obtained as follows. Test samples show back side temperatures as follows : in
. In the test, temperature increases of specimens of fireproof board are kept at certain temperatures hence it could be concluded that the specimens withstand high temperatures. According to the test, it could be concluded that fireproof board made by smaller particles shows better performance up to
while at higher temperatures, fireproof board made by bigger particles shows better performance. It is estimated that fireproof board made by particles of bigger size has more pore structure and it delays heat conduction.
An Experimental Study on the Engineering Properties of Fiber Reinforced Concrete using Kenaf Fibers
Kwon, Yeong-Ho ; Jun, Woo-Chul ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 201~209
DOI : 10.5345/JKIBC.2016.16.3.201
This study is to examine experimentally on the engineering properties of fiber reinforced concrete using kenaf(KN) fiber and another organic fibers for comparing test, and propose the usable method of KN fiber as an natural fiber in the concrete industry. It is to select 4 contents(0, 0.3, 0.6 and
) of KN fiber and 4 organic fibers (Jute, Cellulose, Polypropylene and Nylon). For this study, it is to perform various tests including slump, air content, plastic and drying shrinkage, flexural and tensile strength, carbonation depth for the fiber reinforced concrete according to contents of KN fiber and 4 organic fibers. The results of this study are as follows : In case of KN fiber contents
, it shows the effective results from increasing concrete strength including flexural and tensile, from decreasing plastic and drying shrinkage, carbonation depth. Also KN fiber is confirmed having excellent performances by comparing with test results of another organic fibers as same contents
. Therefore, considering concrete test results, cost and environment, KN fiber is proposed as the optimum contents in the range of
and an effective fiber materials, and needs to keep up these study on the site application.
Plastic and Drying Shrinkage Cracking Reduction by the Bubble Sheet Curing
Lee, Joung-Gyo ; Han, Cheon-Goo ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 211~217
DOI : 10.5345/JKIBC.2016.16.3.211
In this research, the performance of surface covering technique using a white-colored bubble sheet on reducing the cracking due to the plastic, and drying shrinkages for high rise building construction were evaluated by comparing the exposed surface without any surface treatment. From the results of the experiment conducted during fall season, desired results of decreased numbers, length, maximum width, and area of cracking were obtained without a significant difference on heat of hydration and cumulative temperature. Therefore, it is considered that the surface covering technique using bubble sheet is an appropriate method for preventing plastic and drying shrinkage cracking at fall season concrete construction.
An Experimental Study on the Properties of Chloride Binding of Mg/Al-NO
Layered Double Hydroxides in Solution
Lee, Seung-Yeop ; Yang, Hyun-Min ; Lee, Han-Seung ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 219~227
DOI : 10.5345/JKIBC.2016.16.3.219
Chloride ions ingress continuously in reinforced concrete through pores of it by
. Finally, it causes a localized corrosion of the rebar and then it generates cracks on concrete structures. Recently, new materials removing harmful anions have been developed. Layered double hydroxides(LDHs) has an excellent ability to remove harmful anions because various anions can be adsorbed in the interlayer space between divalent and trivalent cations. Thus, LDHs has been applied in various fields. Especially, LDHs is expected to be effective adsorbent binding chloride ions. In this study,
LDHs were prepared by using a co-precipitation method.
LDHs were compared and analyzed by using XRD, SEM analysis. Many nano size hexagonal crystals were observed by SEM. Experiments for binding chloride ions of LDHs were conducted by using potentiometric method. The experimental data were measured every 15 minutes. It was observed that the chloride ion content is reduced by increasing of LDHs mass fraction and the reaction rate of
is faster than
. In future studies, binding chloride capacity in cement materials will be evaluated based on results of this study.
Suggestion for Non-Destructive Testing Equation to Estimate Compressive Strength of Early Strength Concrete
Lee, Tae-Gyu ; Kang, Yeon-Woo ; Choi, Hyeong-Gil ; Choe, Gyeong-Choel ; Kim, Gyu-Yong ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 229~235
DOI : 10.5345/JKIBC.2016.16.3.229
In construction field, it used various technique for concrete formwork. Part of them, non-destructive test has been conducted to estimate a compressive strength of concrete easily such as rebound method and ultrasonic pulse velocity method etc. Former research has recommend proposed equation based on experimental data to investigate strength of concrete but it was sometimes deferent actual value of that from in field because of the few of data in case of early strength concrete. In this study, an experiment was conducted to analyze strength properties for early strength concrete using cylinder mold and
rectangular specimen. And compressive strength of concrete was tested by non-destructive test, and calculated by the equation proposed former research. As a result, the non-destructive test results showed approximately 70 percent of the failure test value for all conditions, and worse reliability was obtained for high strength concrete samples when the ultrasonic pulse velocity method was used. Based on the scope of this study, the experimental equation for estimating compressive strength of early strength concrete from 24MPa to 60MPa was proposed.
An Experimental Study on the Bonding Shear Performance Evaluation of the UHPC According to an Bonding Interface Treatment of the Construction Joint
Jang, Hyun-O ; Kim, Bo-Seok ; Lee, Han-Seung ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 237~245
DOI : 10.5345/JKIBC.2016.16.3.237
Structural performance and durability of ultra high performance concrete could demonstrate optimal performance when unity was kept. Accordingly, it is necessary to involve the characteristics and quantitative surface treatment at the same time in order to retain oneness of Ultra-High-Performance Concrete(UHPC) according to construction joint occurrence. Therefore, this study derives a reasonable surface treatment method in a material's point of view through the shear adhesion performance evaluation according to the construction joints surface processing method as a part for securing the adhesion performance of the construction joints when casting UHPC. 180 MPa of required average strength was used for mix of UHPC and surface treatment method was set to totally 7 level that MN, GR-10-0, GR-20-0, GR-30-0, SH-30-5, SH-30-10. After the specimen were manufactured to a size of
, Direct shear test was performed to evaluate the shear adhesion strength. As a result, it was confirmed that the adhesion performance was improved when executing a surface treatment for the construction joint interface and standard of failure mode of specimen was over Type C. Also, It was considered that interface of cross section and depth of concavo-convex should be concerned.
An Experimental Study on Electric Resistivity and Exothermic Property of Electrically Conductive Mortar using Amorphous Graphite
Ahn, Hong-JIn ; Kim, Sang-Heon ; Choi, Soo-Kyung ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 247~255
DOI : 10.5345/JKIBC.2016.16.3.247
The exothermic property of electrical conductivity concrete would allow the heating system of house or snow melting system of tunnel, road or bridge deck. This study was performed on electric resistance, exothermic property and mechanical property of the mortar with graphite of carbon-based conductive material as a fundamental research for the heat conductive concrete development. As the results of this experiment, the increasement on the amorphous graphite substitution rate was found to decrease in the compressive strength, however, the electric resistance was found to be significantly lower. And, in order to demonstrate the exothermic property, the graphite was found to be included more than 15% of the total mortar volume. When low electric resistance obtained with a certain level of the graphite inclusion, exothermic value and applied voltage has a higher correlation, and the exothermic value and the square of the voltage appeared to be in a proportional relationship.
Establishment of Cooperation Evaluation System between Domestic Large Enterprises and Small/Medium-Sized Enterprises for Invigorating Joint Overseas Expansion
Kim, Taehoon ; Lim, Hyunsu ; Jang, Hyoun-Seung ; Yu, Jung-Ho ; Cho, Hunhee ; Kang, Kyung-In ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 257~269
DOI : 10.5345/JKIBC.2016.16.3.257
Joint overseas expansion could contribute domestic large enterprises and small/medium-sized enterprises to expand overseas construction market by complementing each other's vulnerabilities and weaknesses. To invigorate it, not only does mutual effort between both parties matter, but also providing motivation such as institutional incentives and compensations are important for inducing large enterprises to voluntarily expand overseas construction with small/medium-sized enterprises. However, institutional systems exist only to promote win-win growth limited to domestic construction except for overseas construction. Therefore, the purpose of this study is to establish cooperation evaluation system between domestic large enterprises and small/medium-sized enterprises for invigorating joint overseas expansion by evaluating large enterprises cooperation efforts, and offering incentives to some enterprises gaining a good grade. The developed system could contribute to effectively promote win-win growth by providing institutional guidelines. In other words, The government could induce large enterprises cooperation efforts to some parts which small/medium-sized enterprises need, and large enterprises could selectively and intensively support insufficient cooperation part based on the evaluation result.
Development of the Purlin Hanging System Form for the Girder Bridge Slab and Economic Analysis
Lim, Jeeyoung ; Kim, Sunkuk ; Son, Kiyoung ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 271~278
DOI : 10.5345/JKIBC.2016.16.3.271
In the case of South Korea, steel girder bridge (steel box or H-steel) and PSC (Pre-Stressed Concrete) girder bridge are the representative upper structures of railroad and road bridges. These structures account for 75% of the total bridge constructions and 80% of the total construction cost. Since the form work for concreting bridge slab is difficult, various construction methods developed and applied. However, several problems in those methods did not solve partially, including cost increase by material loss and rise of labor costs, quality deterioration by unskilled workers, increased construction time by complicated method, reduced productivity, safety accident by high place work, difficult transportation by big member, and rise of maintenance cost by material characteristic. Alternative method is needed to solve problems of as-is methods. Therefore, the purpose of this study is development of the purlin hanging system form for the girder bridge slab and its economic analysis. Through the findings of this study, it was verified that the purlin hanging system form is possible 60% reduction in cost and 80% reduction in time as comparison with conventional method.
Engineering Performance of a Rapid Hardening Hydraulic Binder with Hybrid Fiber
Li, Mao ; Kim, Jin-Man ; Choi, Sun-Mi ;
Journal of the Korea Institute of Building Construction, volume 16, issue 3, 2016, Pages 279~288
DOI : 10.5345/JKIBC.2016.16.3.279
The fundamental performance of any construction material should cover at least two phases: safety and serviceability. Safety commonly represents adequate strength, while serviceability encompasses the control of cracking and deflections at service loads. With respect to rapid hydraulic binders as a construction material, the above two phases should also be considered. Recent research on rapid cooling ladle furnace slag (RC-LFS) has drawn much attention, particularly given that it shows remarkable rapid hydraulic ability to pulverize to a fineness of
. This industrial byproduct could contribute to developing the sustainability of the rapidly hardening cementitious material system. This paper aims to expand upon the applicability of an RC-LFS-based binder that is composed of two parts. It also seeks to illustrate the engineering performance of an RC-LFS-based hybrid fiber-reinforced composite and to increase the strength of the RC-LFS-based composite. Each step of this experiment followed ASTM standards. The engineering performance, in both fresh state and hardening state, was tested and discussed in this paper. According to the experimental results for fresh concrete, the air content increased following the addition of polypropylene fiber. For hardened concrete, the toughness and strength improved following the addition of a hybrid fiber. The hybrid fiber mixture, which contains 0.75% of steel fiber and 0.25% of polypropylene fiber, shows even better engineering performance than other mixtures.