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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of the Korean Recycled Construction Resources Institute
Journal Basic Information
Journal DOI :
Korean Recycled Construction Resource Institute
Editor in Chief :
Volume & Issues
Volume 1, Issue 3 - Dec 2013
Volume 1, Issue 2 - Sep 2013
Volume 1, Issue 1 - Jun 2013
Selecting the target year
Recent Advances in Ultra-high Performance Concrete
Kim, Yail J. ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 163~172
DOI : 10.14190/JRCR.2013.1.3.163
This paper presents a comprehensive review of recent advances in ultra-high performance concrete (UHPC). Fundamental characteristics of UHPC are elaborated with focus on its material constituents, mixing, and formulation procedures. Use of state-of-the-art materials such as carbon nanotubes or nano-silica is discussed as well, whose inclusion may enhance the performance of UHPC. The review evaluates supplementary treatment methods (e.g., pressuring curing) and identifies applicable standard test methods for determining the properties and behavior of UHPC. Site implementation is provided to link laboratory research with full-scale application. Research needs are suggested to further develop UHPC technologies from technical and socio-economical perspectives.
Effect of Waste Cooking Oil on Durability of High Volume Mineral Admixture Concrete
Han, Min-Cheol ; Woo, Dae-Hoon ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 173~180
DOI : 10.14190/JRCR.2013.1.3.173
This paper is to investigate an effect of waste cooking oil(WCO) on the engineering properties and durability of high volume admixture concrete. Fly ash with 30% and blast furnace slag with 60% were incorporated in OPC to fabricate high volume admixture concrete with 0.5 of W/B. Emulsified refining cooking oil(ERCO) was made by mixing WCO and emulsifying agent to improve fluidity. ERCO was replaced by cement from 0.25 to 1.0%. As results, the increase of ERCO resulted in decrease of slump and air contents. For compressive strength, the use of ERCO led to decrease the compressive strength at 28 days, while it had similar strength or much higher strength than plain concrete at 180 days. Resistance to carbonation and chloride penetration was improved with the increase of ERCO contents due to decreased pore distribution by saponification between ERCO and concrete, while freeze-thaw resistance was degraded due to air loss.
Effect of Carbon Amino Silica Black Contained Superplasticizer on the Engineering Properties and Chromaticity of Black Color Concrete
Han, Min-Cheol ; Hong, Seok-Min ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 181~188
DOI : 10.14190/JRCR.2013.1.3.181
This paper is to investigate experimentally an effect of carbon amino silica black-superplasticizer(CASB-SP)on the engineering properties and chromaticity of black color concrete with 0.45 of W/C(water to cement). CASB-SP and carbon black were applied for pigment of the concrete. To prevent efflorescence of concrete, four different water repellent agents were also applied. As results, it was found that use of CASB-SP increased the slump and air contents. Furthermore, the use of CASB-SP increased the compressive strength. As CASB-SP dosages increased, chromaticity was well developed. For the effect of water repellent agent, the use of epoxy type was effective for protection from efflorescence. Based on test results, it was evaluated that 0.5% of CASB-SP effectively improve the concrete quality as well as enhance the chromaticity with proper dosage.
Applicable Building Range for the Introduction of the Building Separation and Dismantling System
Park, Ji-Sun ; Song, Tae-Hyeob ; Choi, Dong-Ho ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 189~196
DOI : 10.14190/JRCR.2013.1.3.189
In order for efficient recycling and eco-friendly treatment of construction waste, there is a need to apply a building separation and dismantling technique early on in the stage of waste generation. This study was conducted to analyze the relevant domestic circumstances and propose the applicable range of buildings in order to introduce a building separation and dismantling system to Korea. For this purpose, related policies and systems implemented overseas and the current situation of buildings were examined, and the workability of separation and dismantling of buildings according to their uses was compared. Also, the economic impact of the separation and dismantling system was examined and a survey was conducted, seeking the opinions of the relevant companies regarding the need for the system and the selection criteria for eligible buildings. Based on the results, it was determined that it would be impossible to apply the separation and dismantling system to all buildings in Korea, considering the current technical power and economic situation, and that the system should be introduced in phases, according to the building classification determined based on floor area and use, as the cost may vary depending on a number of variables including the level of difficulty and field conditions.
Tensile and Compressive Creep Behaviors of Amorphous Steel Fiber-Reinforced Concrete
Truong, Gia Toai ; Choi, Kyoung-Kyu ; Choi, Oan-Chul ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 197~203
DOI : 10.14190/JRCR.2013.1.3.197
In this study, the creep behaviors of amorphous steel fiber-reinforced concrete were investigated. Two different types of tests were carried out to evaluate the effect of amorphous steel fibers on the creep of concrete: compressive creep test and tensile creep test. Fiber volume fractions used in the test were 0.2% and 0.4% for tensile specimens, and 0.2% and 0.3% for compressive specimens. Based on the test results, the addition of fiber volume fraction of 0.2% into concrete could significantly reduce both compressive and tensile creep.
Availability Review of Tailings from the Sangdong Tungsten Mine as a Material for Construction
Kim, Yong-Jic ; Kim, Young-Jin ; Choi, Yun-Wang ; Kim, Sang-Chel ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 204~210
DOI : 10.14190/JRCR.2013.1.3.204
This study has focused on the possibility for recycling tailings from the Sangdong tungsten mine (TA) as admixture for concrete. TA has been accumulating for several decades in Sangdong, a region in Korea, and there is a growing demand for alternative uses for this hazardous substance. In particular, the use must be in accordance with the hazardous materials stipulations under the Korean waste control act. This study showed that TA presented pH of 8.0-9.3, 18.7-22.0% of water content, 2.7% of maximum ignition loss. The chemical composition of TA showed minute differences from each depth of sampling that represented approximately 50% of
and 13% of both
. The chemical composition of Cd, Cu, Zn and Pb from mortar incorporating TA showed lower levels of hazardous materials which met the specifications of the waste control act in Korea. The TA mortar also appeared very effective for stabilizing/solidifying heavy metals particularly when used in conjunction with SG.
Evaluate the Concrete mix by Type Accelerated Corrosion Test and Chloride Penetration Analysis with Artificial Seawater Cyclic Wet and Dry Condition
Park, Sang-Soon ; Kim, Min-Wook ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 211~218
DOI : 10.14190/JRCR.2013.1.3.211
Cyclic wet and dry conditions in the marine environment structures corrosion is known to be the fastest rising. For that reason, accelerated corrosion test methods for the reproduction of tidal environment has been actively conducted. However, many studies have estimated threshold value for steel corrosion or concentrated in chloride penetration analysis. In this study, cyclic wet and dry conditions to reproduce the structure of the environment in accelerated corrosion and chloride penetration test analysis was performed. Corrosion was determined by the result of reinforcement corrosion monitoring based on galvanic potential measurement and half-cell potential method. Accelerated corrosion test results for each formulation was different corrosion periods, the order OPC> FA> BS> High-strength concrete. FEM durability interpretation program DuCOM was conducted under the same conditions as in accelerated corrosion test. The experimental RCPT tests demonstrated the validity of the result.
A Study on Fabrication and Characterization of Inorganic Insulation Material by Hydrothermal Synthesis Method (1)
Seo, Sung-Kwan ; Chu, Yong-Sik ; Lee, Jong-Kyu ; Song, Hun ; Park, Jae-Wan ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 219~224
DOI : 10.14190/JRCR.2013.1.3.219
In this study, the inorganic insulating material was fabricated with quartzite, ordinary portland cement(OPC), lime and anhydrous gypsum. After characteristic analysis of slurry, the optimum mixing ratio was derived with different
mole ratio. Based on derived mixing ratio, the inorganic insulating material was fabricated at different water content and hydrothermal synthesis conditions. Specific gravity was
, compressive strength was 0.4 MPa, and thermal conductivity was 0.064 W/mK. This properties were enhanced performance of conventional ALC (Autoclaved Lightweight Concrete). And it can replace organic insulation with harmless inorganic insulation through continues research and development.
A Study on Fabrication and Characterization of Inorganic Insulation Material by Hydrothermal Synthesis Method (2)
Seo, Sung-Kwan ; Chu, Yong-Sik ; Lee, Jong-Kyu ; Song, Hun ; Park, Jae-Wan ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 225~232
DOI : 10.14190/JRCR.2013.1.3.225
The inorganic insulating material was fabricated with quartzite, ordinary portland cement(OPC), lime, anhydrous gypsum and foaming agent by hydrothermal reaction. The inorganic insulating material was fabricated by using autoclave chamber under high-temperature and high-pressure. The inorganic insulating material is a porous lightweight concrete. Because of its porous structure, properties of inorganic insulating material were light-weight and high-heat insulation property. Properties of fabricated inorganic insulating material were
in specific gravity, 0.4MPa in compressive strength and 0.064W/mK in thermal conductivity. In this study, the inorganic insulating material was fabricated and analyzed at different size of quartzite/OPC, various foaming reagent and functional additives to improve the properties. Consequently, polydimethylsiloxane can improve density and thermal conductivity. Especially, polydimethylsiloxane showed excellent improvement in compressive strength.
Property of Concrete Surface layer Using Self-Cleaning Silicate Concrete Impregnant
Song, Hun ; Lee, Jong-Kyu ; Chu, Yong-Sik ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 233~239
DOI : 10.14190/JRCR.2013.1.3.233
This study is interested in manufacturing the self-cleaning silicate concrete surface impregnant including tetra ethyl ortho silicate, lithium silicate for the repair of the exposed concrete surface and the color concrete requiring the advanced function in view of the concrete appearance. The concrete surface layer change and static contact angel was tested for the review of application. The result of this study shows that the effective silicate is tetra ethyl ortho silicate and lithium silicate. The adhesion in tension is satisfied with performance requirement of KS standard but the reinforcement of concrete substrate is slight. So, The self-cleaning silicate concrete impregnant of this study is more desirable for the improvement of durability rather than the reinforcement.
Optimum Binder Ratio of Mass Concrete for LNG Tank
Kim, Young-Jin ; Park, Sang-Jun ; Kim, Kyoung-Min ; Lee, Eui-Bae ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 240~245
DOI : 10.14190/JRCR.2013.1.3.240
The optimum binder ratio of the low heat mass concrete for LNG tank was evaluated in the present study. Three types of binder such as OPC I, ground granulated blast-furnace slag powder were mixed and were used. Also fine particle cement and activator were used to raise an early age strength development and ground limestone was used to reduce the cost. As a result of the study, mix ratio II (30:30:40) was suitable for Bottom Center and mix ratio III(40:30:30) was suitable for Roof based on compressive strength and semi-adiabatic temperature.
Study on the Safety of Playground Flooring Made of Polyolefin Foam Waste and Rubber Paving
Choi, Soo-Kyung ; Jun, Myoung-Hoon ; Lee, Do-Heun ;
Journal of the Korean Recycled Construction Resources Institute, volume 1, issue 3, 2013, Pages 246~254
DOI : 10.14190/JRCR.2013.1.3.246
This study is purposed to verify the safety of the floor of the children`s playground using polyolefin foam waste and rubber paving. The critical fall height, walking suitability, long term physical fatigue expectation and slipperiness were tested. Polyolefin foam wastes in thickness of 30mm, 50mm and 70mm were prepared with paving the rubber paving materials in 12mm and 15mm thickness respectively. The test on the critical fall height was carried out according to KS G 5758:2009. The floor hardness test equipment (O-Y HMA) was used for the test on hardness of the floor from a viewpoint of walking suitability and fatigue. A portable slipperiness tester (ONO PPSM) was used for slipperiness test. It was revealed from the test that the floor made of the polyolefin foam waste and rubber paving were considerably safe from a viewpoint of impact absorption. With regards to the hardness of the floor, it was shown the excellent performance in the aspects of walking and fatigue for male. But it was not suitable with walking on the shoes(middle heels) for female. And they will be very fatigue if they were in a long time walking or standing. As far as the slipperiness is concerned, it was shown that it was comparatively safe for the ordinary motions even though the surface was wet.