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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
International Journal of Highway Engineering
Journal Basic Information
Journal DOI :
Korean Society of Road Engineers
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Volume & Issues
Volume 3, Issue 4 - Dec 2001
Volume 3, Issue 3 - Sep 2001
Volume 3, Issue 2 - Jun 2001
Volume 3, Issue 1 - Mar 2001
Selecting the target year
Evaluation of Friction and Hydroplaning Characteristic in Aifield Using Dry Grooving Method
Park, Tae-Soon ;
International Journal of Highway Engineering, volume 3, issue 3, 2001, Pages 111~118
Since the advent of turbojet aircraft with their greater weight and high landing speed breaking performance on runway surface has become un critical. Under certain weather conditions(wet weather, winter) hydroplaning or unacceptable loss of traction can occur, resulting in poor braking performance and possible loss of directional control. To address this concern a number of research project me conducted by NASA, FAA, USAF. The various method which was reported the advantage of the increasing the friction and decreasing the hydroplaning effect. A-2 section of inchon international airport was grooved using drying grooving method. In order to evaluate the effectiveness of the dry grooving method the surface was spray with water and measured the fiction factor and the depth of the water using Mu meter and water depth measuring device. The field test results shooed that the fiction factor nos increased and the depth of the water decreased. The dry grooving method illustrated the reduction of hydroplaning and also, no distress on the runway.
Laboratory Performance Evaluation of Chemcrete Modified Asphalt Mixtures
Park, Kyung-Il ; Lee, Hyun-Jong ; Lee, Kwang-Ho ; Rhee, Suk-Keun ;
International Journal of Highway Engineering, volume 3, issue 3, 2001, Pages 119~133
The stiffness of chemcrete modified asphalt mixtures increase rapidly with time in the presence f oxygen and high temperature, Sometimes the asphalt pavements that have chemcrete modified asphalt mixture applied on the surface none show premature cracking because of the excessive increase in the stiffness f the asphalt mixtures. To mitigate this premature cracking, the chemcrete modified mixtures have been used as a base course material. In this study, the performance of the chemcrete modified asphalt binder and mixtures are investigated through a course of various laboratory tests including dynamic shear rheometer and bending beam rheometer tests for binders and uniaxial tensile fatigue, wheel tracking, and moisture damage tests for the mixtures. And also the resilient modulus of the conventional and chemcrete modified mixtures are compared based on the test results conducted on the specimens obtained from various in-situ test sections. It can be concluded from the tests results that the chemcrete modified mixtures show better rutting resistance than conventional mixtures. The chemcrete modified mixtures may have low temperature cracking when it is applied in the cold region. The stiffness of chemcrete modified mixtures is approximately 50 percent higher than that of conventional mixtures more than two years after the chemcrete modified mixture was applied in the base course.
Strength Development Properties of Latex Modified Concrete For New Concrete Bridge Deck Overlay
Yun, Kyong-Ku ; Kim, Ki-Heoun ; Lee, Joo-Hyung ; Hong, Chang-Woo ; Kim, Dong-Ho ;
International Journal of Highway Engineering, volume 3, issue 3, 2001, Pages 135~146
This study focused on the investigation of compressive and flexural strengths development, and bond strength of latex modified concrete in order to validate the feasibility of application into concrete bridge deck overlay. Pull-out bond test was used for evaluating the bond strength of latex modified concrete to substrate. The main experimental variables were latex-cement ratio, surface preparation and moisture levels. The compressive strength of latex modified concrete decreased slightly and the flexural strength increased as the latex content increased from 5% to 20%. This might be due to the flexibility latex filled in voids and interconnections of hydrated cement and aggregates by a film of latex particles, respectively. In general, increasing the amount of latex will produce concrete with increased tensile and flexural strength and lower modulus of elasticity. Significant improvements in bond strength between new and existing concrete were achieved through the modification of the new concrete bridge deck overlay by latex polymers. The effect of surface preparation on bond of latex modified concrete to conventional concrete were significant at the conditions by sand paper and wire brush. A better bond could be achieved by rough surface rather than smooth. The saturated condition of surface is the most appropriate moisture level among the considered followed by dry condition and wet condition.
A Study on Effect Factor of Load Transfer Efficiency in Concrete Pavement
Yang, Hong-Suk ; Suh, Young-Chan ; Kwon, Soo-Ahn ;
International Journal of Highway Engineering, volume 3, issue 3, 2001, Pages 147~158
One of the most important factors accounting for the structural capacity of concrete pavement is load transfer efficiency. Load transfer efficiency is affected by slab temperature gradient, construction of dowel bars, degree of aging, and crack width. The purpose of this study is to determine the patterns of load transfer efficiency of concrete pavement; to determine the factors that affect the load transfer efficiency; and to present the proper measuring method of load transfer efficiency. As a result from this study, load transfer efficiency was affected primarily by the average temperature in concrete slab. Load transfer efficiency decreased with decreasing temperature and increasing crack width. For the sections with dowel bars, there were little differences in load transfer efficiency regardless of temperature changes. For the sections without dowel bars, however, there on great losses of load transfer efficiency at low temperatures. For the old pavement, even in the sections with dowel bars, the load transfer efficiency reduced as the temperature dropped For the sections in this study, 1.4% reduction of the load transfer efficiency was observed for each
drop in the slab temperature.