RAP in SMA - USE OF RAP IN SMA BITUMINOUS MATERIALS TERM...

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USE OF RAP IN SMA BITUMINOUS MATERIALS TERM PAPER MICHAEL ANKAMAH BEKOE FALL 2010
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Outline of Presentation Introduction Brief Description of Materials Used Design Procedure Using RAP Effect of RAP on Aggregate Properties Effect of RAP on Binder Properties Performance Evaluation of Combined Blend Moisture Susceptibility Rutting Susceptibility Thermal Cracking Fatigue Life Conclusion
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Introduction WHAT IS RAP? R eclaimed A sphalt P avement Contains Hardened Asphalt and Degraded Aggregate Removed and/or Reprocessed Pavement
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Introduction WHAT IS SMA? Tough, Stable, Rut Resistant Mixture Relies on Stone-On Stone Contact to Provide Strength Relies on a Rich Binder to Provide Stability Employs the Use of Polymer-Modified Asphalt and Fiber-Stabilizers to Improve Durability and Prevent Asphalt Drain-Down
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Introduction Background RAP has had success in HMA Applications The Use of RAP is proven to be Economical and Environmentally Friendly RAP use has not been adequately Evaluated in SMA mixtures
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Introduction Objectives Assess whether the Use of RAP would meet the expected Engineering Properties and Performance Standards as conventional mixes would Assess the Effect of RAP on combined Materials
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Brief Description of Materials Used A Dense Graded RAP with High Asphalt Content A Dense Graded RAP with Low Asphalt Content A coarse Graded Stockpile (Sieve Crushed RAP through No. 4) A fine Graded Stockpile Granite – Mostly Recommended for SMA
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Mix Design Procedure Mix RAP material, Virgin Asphalt, Virgin Aggregate proportionally to Produce a 12.5mm SMA mix Compact Using The Marshall Procedure Blend at four different Proportions (0%, 10%, 20%, 30%)
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Mix Design Procedure (Cont.) Blend with 0% RAP is set as the Control
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This note was uploaded on 05/26/2011 for the course TTE 5837 taught by Professor Staff during the Spring '11 term at University of Florida.

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RAP in SMA - USE OF RAP IN SMA BITUMINOUS MATERIALS TERM...

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