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    Development of Mix Design Procedure for Cold In-Place Recycling with Foamed Asphalt

    Source: Journal of Materials in Civil Engineering:;2006:;Volume ( 018 ):;issue: 001
    Author:
    Yongjoo Kim
    ,
    Hosin “David” Lee
    DOI: 10.1061/(ASCE)0899-1561(2006)18:1(116)
    Publisher: American Society of Civil Engineers
    Abstract: The main objective of this study is to determine mix design parameters for cold in-place recycling with foamed asphalt. First, the foaming process of laboratory foaming equipment was validated by varying the water and asphalt content. 1.3% water content was adopted to create the optimum foaming characteristics in terms of the expansion ratio and the half-life at 170°C under air pressure of 400 kPa and water pressure of 500 kPa. The mix design was then performed using both the indirect tensile test and the Marshall test for 13 combinations of foamed asphalt content and water content for three different gradations. The water content did not appear to affect the test results significantly. Maximum stability (both wet and dry samples), maximum bulk density, and indirect tensile strength (both wet and dry samples) were all obtained around 2.5% foamed asphalt content. Overall, the highest Marshall stability and indirect tensile strength were obtained in the order of fine, field, and coarse reclaimed asphalt pavement gradations. It is recommended that the indirect tensile strength based on wet samples be adopted for determining the optimum foamed asphalt content.
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      Development of Mix Design Procedure for Cold In-Place Recycling with Foamed Asphalt

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    http://yetl.yabesh.ir/yetl1/handle/yetl/46099
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    • Journal of Materials in Civil Engineering

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    contributor authorYongjoo Kim
    contributor authorHosin “David” Lee
    date accessioned2017-05-08T21:17:57Z
    date available2017-05-08T21:17:57Z
    date copyrightFebruary 2006
    date issued2006
    identifier other%28asce%290899-1561%282006%2918%3A1%28116%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/46099
    description abstractThe main objective of this study is to determine mix design parameters for cold in-place recycling with foamed asphalt. First, the foaming process of laboratory foaming equipment was validated by varying the water and asphalt content. 1.3% water content was adopted to create the optimum foaming characteristics in terms of the expansion ratio and the half-life at 170°C under air pressure of 400 kPa and water pressure of 500 kPa. The mix design was then performed using both the indirect tensile test and the Marshall test for 13 combinations of foamed asphalt content and water content for three different gradations. The water content did not appear to affect the test results significantly. Maximum stability (both wet and dry samples), maximum bulk density, and indirect tensile strength (both wet and dry samples) were all obtained around 2.5% foamed asphalt content. Overall, the highest Marshall stability and indirect tensile strength were obtained in the order of fine, field, and coarse reclaimed asphalt pavement gradations. It is recommended that the indirect tensile strength based on wet samples be adopted for determining the optimum foamed asphalt content.
    publisherAmerican Society of Civil Engineers
    titleDevelopment of Mix Design Procedure for Cold In-Place Recycling with Foamed Asphalt
    typeJournal Paper
    journal volume18
    journal issue1
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)0899-1561(2006)18:1(116)
    treeJournal of Materials in Civil Engineering:;2006:;Volume ( 018 ):;issue: 001
    contenttypeFulltext
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