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Dense Graded and Stone Mastic Asphalts

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  • NZTA M10:2014

    SP/SM10:140905 SPECIFICATION FOR DENSE GRADED AND STONE MASTIC ASPHALTS Page 1 of 30

    SPECIFICATION FOR DENSE GRADED AND STONE

    MASTIC ASPHALTS

    Table of Contents

    1 GENERAL ....................................................................................................................................................................................... 3 1.1 Scope .................................................................................................................................................. 3 1.2 References .......................................................................................................................................... 3

    1.2.1 Austroads ........................................................................................................................................ 3 1.2.2 New Zealand Transport Agency ........................................................................................................ 3 1.2.3 Standards New Zealand .................................................................................................................... 3 1.2.4 Standards Australia .......................................................................................................................... 3 1.2.5 American Society for Testing and Materials (ASTM) .......................................................................... 4 1.2.6 Miscellaneous .................................................................................................................................. 4

    1.3 Definition of Terms ............................................................................................................................. 5 1.3.1 Asphalt Mix Types ........................................................................................................................... 5

    1.4 Quality System .................................................................................................................................... 5 1.5 Testing ............................................................................................................................................... 5 2 MATERIALS .................................................................................................................................................................................. 5 2.1 Aggregate ........................................................................................................................................... 5

    2.1.1 General ............................................................................................................................................ 5 2.1.2 Coarse Aggregate ............................................................................................................................ 6 2.1.3 Fine Aggregate ................................................................................................................................ 7

    2.2 Mineral Filler ....................................................................................................................................... 8 2.3 Binder ................................................................................................................................................. 8

    2.3.1 Bitumen ........................................................................................................................................... 8 2.3.2 Other Binders ................................................................................................................................... 8 2.3.3 Additives .......................................................................................................................................... 8 2.3.4 Rejuvenating Agent .......................................................................................................................... 8

    2.4 Reclaimed Asphalt Pavement............................................................................................................... 8 3 MIX DESIGN ................................................................................................................................................................................. 9 3.1 General ............................................................................................................................................... 9 3.2 Aggregate Grading and Binder Content ............................................................................................... 9 3.3 Mix Properties ................................................................................................................................... 12

    3.3.1 General .......................................................................................................................................... 12 3.3.2 Dense Graded Asphalt ................................................................................................................... 12 3.3.3 Stone Mastic Asphalt ...................................................................................................................... 14

    3.4 Design of Asphalt Mixes Incorporating Reclaimed Asphalt Pavement (RAP) ....................................... 14 3.4.1 General .......................................................................................................................................... 14 3.4.2 Asphalt Mixes Containing Not More Than 15% of RAP by Mass of Total Mix ................................... 14 3.4.3 Asphalt Mixes Containing More Than 15% But Not More Than 30% of RAP by Mass of Total Mix .... 15 3.4.4 Asphalt Mixes Containing More Than 30% of RAP .......................................................................... 15

    3.5 Approval of Job-Mix Formula ............................................................................................................. 15 3.5.1 General .......................................................................................................................................... 15 3.5.2 Approval to Use Previously Designed Mix ....................................................................................... 17

    4 MANUFACTURE AND STORAGE ....................................................................................................................................... 17 4.1 General ............................................................................................................................................. 17 4.2 Storage of Raw Materials ................................................................................................................... 17 4.3 Mixing Temperatures ........................................................................................................................ 17 4.4 Moisture Content .............................................................................................................................. 18 4.5 Storage of Mixed Asphalt .................................................................................................................. 18 4.6 Manufacture of Stone Mastic Asphalt ................................................................................................ 18 4.7 Asphalt Mixes Incorporating Reclaimed Asphalt Pavement (RAP) ....................................................... 18 5 SAMPLING AND TESTING OF ASPHALT PRODUCTION ......................................................................................... 18 5.1 General ............................................................................................................................................. 18

  • NZTA M10:2014

    SP/SM10:140905 SPECIFICATION FOR DENSE GRADED AND STONE MASTIC ASPHALTS Page 2 of 30

    5.2 Frequency of Sampling and Testing .................................................................................................. 19 5.3 Production Tolerances ...................................................................................................................... 20 5.4 Process Control ................................................................................................................................. 20 6 DELIVERY .................................................................................................................................................................................... 20 7 PRODUCTION AND CONSTRUCTION TRIAL .............................................................................................................. 21 7.1 General ............................................................................................................................................. 21 7.2 Manufacture ...................................................................................................................................... 21 7.3 Placing, Compaction and Finishing.................................................................................................... 21 7.4 Testing of Trial Section ..................................................................................................................... 21 8 CONTRACTOR QUALITY PLAN ......................................................................................................................................... 22 8.1 Raw Materials .................................................................................................................................... 22 8.2 Mix Design and Production Trials ...................................................................................................... 22 8.3 Sampling and Testing ....................................................................................................................... 22 8.4 Manufacturing and Storage ....................

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