6506-10 - VERTICAL STRESSES IN THE PAVEMENT EFFECTS OF...

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LOAD INDUCED STRESSES IN A TYPICAL PAVEMENT SECTION VERTICAL STRESSES UNDER THE CENTER OF A 9-KIP WHEEL LOAD Consolidation rutting will occur in the surface layer when the vertical stress exceeds the the compressive strength of the asphalt concrete Consolidation rutting will occur in the base layer when the vertical stresses in the base layer exceeds the compressive strength of the base material Rutting will occur in the subgrade when the vertical stresses in the subgrade exceeds the compressive strength of the subgrade soil STRESSES IN THE ASPHALT CONCRETE LAYER UNDER THE 9-KIP LOAD
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STRESSES IN THE ASPHALT CONCRETE UNDER THE EDGE OF THE 9-KIP WHEEL LOAD Shoving will occur when the shear stresses in the asphalt concrete exceed the shear strength of the asphalt concrete Cracking will occur when the tensile stresses in the asphalt concrete exceed the tensile strength of the asphalt concrete Asphalt Concrete Base Subbase Subgrade EFFECTS OF CONTACT TIRE PRESSURE ON
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Unformatted text preview: VERTICAL STRESSES IN THE PAVEMENT EFFECTS OF WHEEL LOAD ON VERTICAL STRESSES IN THE PAVMENT EFFECTS OF MIX PROPERTIES ON ASPHALT PAVEMENT PERFORMANCE (1) Marshall Stability- Related to tensile strength- Not directly related to shear strength or rutting resistance. (2) Marshall Flow- Excessive high Marshall flow is related to tender mix with low resistance to rutting- Mix with low Marshall flow is stiff and difficult to compact (3) VMA (Voids in Mineral Aggregate)- Low VMA is associated with bleeding and rutting problems. (4) Air Voids Content- Low air voids is associated with low VMA.- High air voids will cause reduced durability (increased asphalt hardening rate, increased water susceptibility, reduced fatigue and shear resistance). (5) Hveem S Value- Related to shear strength and rutting resistance (6) Tensile Strength- Related to cracking resistance (7) Shear Strength- Related to rutting resistance...
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This note was uploaded on 05/26/2011 for the course CGN 6505 taught by Professor Mang during the Spring '11 term at University of Florida.

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6506-10 - VERTICAL STRESSES IN THE PAVEMENT EFFECTS OF...

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