Recycling and Reclamation of Asphalt Pavements Using In-Place Methods (2011) / Chapter Skim
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Pages 28-34
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– Once moisture content is below 1.0% (CIR) Better-defined guidance for weather conditions for each in-place recycling process is needed for successful in-place recycling projects.
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Each category of the HIR process has its own sequence of standard and specialized heavy equipment. All of the HIR processes use one or more preheaters to soften the existing pavement so that it can be scarified or milled.
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. HIR remixing mills provide the deepest milling depths of the HIR processes.
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Four percent lime was applied, repulverized, and allowed to mellow for 24 h. The second admixture, which was 6% fly ash, was blended into the lime-treated material.
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30 FIGURE 27 Flow chart of activities for FDR projects (based on FHWA 1997)
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Mix properties evaluated by agencies cover a wide range of tests such as binder content, indirect tensile strength, Hamburg rut testing, moisture sensitivity (boiling water, TSR) , and other standard HMA tests (e.g., volumetrics)
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(IowaDOT, at 100°F) ; • Indirect tensile strengths, minimum, of – 241 to 276 kPa (35 to 40 psi; dry)
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