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      Development of Predictive Models and an Interlayer Shear Strength Tester for Optimum Application Rates of Tack-Coat Materials

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      https://www.riss.kr/link?id=A105380789

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      The bond property is mightily important in asphalt construction site as overlay, post-cutting overlay and new establishment of asphalt pavement. If the bonding between the lower and upper pavements isn't approriately applied, the slipping phenomenon can happen due to the tensile stress and shear stress. It can resultantly take the forms of the rutting, failure and other damages. Moreover, the greater damage phenomenon from the intense reflection cracking can be generated when the appropriate methods regarding the cracks or failures on the lower pavement aren't conducted and the bonding with its pavements isn't properly applied. In this regard, the researched content on the existing research is shown below. The types of asphalt emulsion applied to the pavement construction site are classified as Tack-Coat and Prime-Coat in South Korea. The application purpose of Tack-Coat is to bond the pavements comprised of the rigid material. And the application objective of Prime-Coat is to attach the layers consisting the disturbed materials. The best performance related to the optimum application rates depends on the type or property of the emulsified asphalt materials. To solve these phenomenons, the various researches have been globally done. The test methods to obtain the optimum application rates of the asphalt emulsion vary in different organizations or countries. The objective of this research is to develop the tester for Tack-Coat bonding property in accordance with the standards and circumstances of the pavement construction in South Korea. In the nation, the application rate of Tack-Coat is presented as 0.3 l/m2 ~ 0.6 l/m2 in the construction specification and pavement design guideline published in the Ministry of Land, Infrastructure and Transport (MOLIT), but there aren't the specific suggestions. And, it depends on the superintendents or the ordering bodies in the construction sites. In that regard, the objectives of this paper are listed below. First, Suggestion of the test methods regarding the Interlayer Shear Strength in accordance with the domestic construction conditions and standards. Second, Development of the tester for conducting various tests using a tester. Last, Development of the predictive model for the optimum application rates of the emulsified asphalt.
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      The bond property is mightily important in asphalt construction site as overlay, post-cutting overlay and new establishment of asphalt pavement. If the bonding between the lower and upper pavements isn't approriately applied, the slipping phenomenon c...

      The bond property is mightily important in asphalt construction site as overlay, post-cutting overlay and new establishment of asphalt pavement. If the bonding between the lower and upper pavements isn't approriately applied, the slipping phenomenon can happen due to the tensile stress and shear stress. It can resultantly take the forms of the rutting, failure and other damages. Moreover, the greater damage phenomenon from the intense reflection cracking can be generated when the appropriate methods regarding the cracks or failures on the lower pavement aren't conducted and the bonding with its pavements isn't properly applied. In this regard, the researched content on the existing research is shown below. The types of asphalt emulsion applied to the pavement construction site are classified as Tack-Coat and Prime-Coat in South Korea. The application purpose of Tack-Coat is to bond the pavements comprised of the rigid material. And the application objective of Prime-Coat is to attach the layers consisting the disturbed materials. The best performance related to the optimum application rates depends on the type or property of the emulsified asphalt materials. To solve these phenomenons, the various researches have been globally done. The test methods to obtain the optimum application rates of the asphalt emulsion vary in different organizations or countries. The objective of this research is to develop the tester for Tack-Coat bonding property in accordance with the standards and circumstances of the pavement construction in South Korea. In the nation, the application rate of Tack-Coat is presented as 0.3 l/m2 ~ 0.6 l/m2 in the construction specification and pavement design guideline published in the Ministry of Land, Infrastructure and Transport (MOLIT), but there aren't the specific suggestions. And, it depends on the superintendents or the ordering bodies in the construction sites. In that regard, the objectives of this paper are listed below. First, Suggestion of the test methods regarding the Interlayer Shear Strength in accordance with the domestic construction conditions and standards. Second, Development of the tester for conducting various tests using a tester. Last, Development of the predictive model for the optimum application rates of the emulsified asphalt.

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