2011_AAPA_Study_Tour.. - Aapaq.org

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5. Binders AAPA 2011 Study Tour Group ReportExample of a hand held field rotational viscometerReheating of CRB samples will also result in a change in the binder properties and therefore it ispreferred that the samples are prepared for testing before application.V4-2 Page 50
5. Binders AAPA 2011 Study Tour Group ReportManufacture of CRBOnly the preblend or ‘wet’ method is utilised in RSA for blending CRB for use in both spray sealingand asphalt. Blending of the CRB is also done closest to the point of use. High speed mixingtechnology is used to blend the rubber crumb with bitumen which is super heated to 210°C priorto digestion. The blend is digested for a minimum of 45 minutes and the maximum self life atspraying or mixing temperature is 6 hours. The blended CRB is either digested in the sprayer or acompartmented tank. Both the sprayers and compartmented tank have belly augers to agitate theCRB.Schematic of a typical high speed CRB blenderSource: Sabita Manual 19Compartment CRB tank and central discharge pointV4-2 Page 51
Page 1 and 2: Australian Asphalt Pavement Associa
Page 3 and 4: Contents1. EXECUTIVE SUMMARY 22. IN
Page 5 and 6: 1. Executive Summary AAPA 2011 Stud
Page 7 and 8: 2. INTRODUCTIONIn the forty year hi
Page 9 and 10: 3. Overview and Recommendations AAP
Page 11 and 12: 3. Overview and Recommendations AAP
Page 13 and 14: 4. Surface Treatments Questions and
Page 43 and 44: 4. Surface Treatments - Reference M
Page 45 and 46: 5. Binders AAPA 2011 Study Tour Gro
Page 51: 5. Binders AAPA 2011 Study Tour Gro
Page 57 and 58: 5. Binders Questions and Responses
Page 65 and 66: 5. Binders - References AAPA 2011 S
Page 67 and 68: 6. Improving Pavement Performance A
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Page 81: 6. Improving pavement performance -
Page 84 and 85: 6. Improving pavement performance -
Page 92 and 93: 6. Improving pavements performance
Page 94 and 95: 7. Sustainability AAPA 2011 Study T
Page 100 and 101: 7. Sustainability - Questions & Res
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7. Sustainability - Questions & Res
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8. CAPSA’11 & General AAPA 2011 S
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8. CAPSA’11 & General AAPA 2011 S
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8. General - Questions & Responses
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8. General - Questions & Responses
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Appendix 9.1 - Detailed ItineraryAA
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Appendix 9.1 - Detailed ItineraryAA
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Appendix 9.2 - Study Tour Delegates
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Appendix 9.2 - Study Tour Delegates
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Appendix 9.3- Question ListAAPA 201
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Appendix 9.4 - South African Acrony
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Appendix 9.4 - South African Acrony
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Appendix 9.5 - ReferencesAAPA 2011
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Australian Asphalt Pavement Associa
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