A Review of Aggregate and Asphalt Mixture Specific Gravity ...

Table of Contents1. Introduction ................................................................................................................. 12. Background ................................................................................................................. 23. Bulk Specific Gravity of Aggregate ........................................................................... 33.1. Coarse Aggregate Bulk Specific Gravity ........................................................... 33.1.1. Standard Test Methods ............................................................................... 33.1.2. Precision Estimates of Standard Test Methods ........................................... 33.1.3. Shortcomings of Standard Test Methods .................................................... 43.1.4. Alternatives to Standard Test Methods ............................................................. 43.2. Fine Aggregate Bulk Specific Gravity ............................................................... 63.2.1. Standard Test Methods ............................................................................... 63.2.2. Precision Estimates of Standard Test Methods ........ Error! Bookmark notdefined.3.2.3. Shortcomings of Standard Test Methods .................................................... 73.2.4. Modifications for Determining SSD Condition of Fine Aggregate ............ 83.2.5. Alternatives to Standard Test Methods ....................................................... 94. Maximum Specific Gravity of Asphalt Mixtures ..................................................... 144.1. Current Standard Test Methods ........................................................................ 144.2. Precision Estimates of Current Standard Test Methods ................................... 154.3. Alternatives to Current Standard Test Methods ............................................... 175. Bulk Specific Gravity of compacted HMA Specimens ............................................ 195.1. Standard Test Methods ..................................................................................... 195.2. Precision Estimates of Standard Test Methods ................................................ 195.3. Alternatives to Standard Test Methods ............................................................ 206. Impacts of Specific Gravity Measurements on Mixture Properties .......................... 247. Summary ................................................................................................................... 288. Recommendations ..................................................................................................... 31v