Page 530881 AGGREGATES FOR ASPHALT SURFACE TREATMENTS
881.1 General Requirements
The material will conform to the specifications for the particular material required by the contract. The material will be sand, crushed rock or crushed gravel. The material will not contain dirt, clay balls, vegetation or organic debris, paper, metal, glass, and other foreign material.
881.2 Specific Requirements
REQUIREMENTS TYPE 1 TYPE 2 A B A B CTYPE 3 Sieve Percent Passing 5/8 inch 100 1/2 inch 100 3/8 inch 100 100 100 100 0-100 1/4 inch 25-70 0-70 #4 0-25 0-75 0-70 0-60 0-15 10-75 #8 0-5 0-30 0-28 0-18 0-5 0-62 #40 0-4 0-6 0-4 0-4 0-30 #200 0-1.3 0-3.0 0-3.0 0-1.3 0-1.0 0-10.0 Other Properties Flakiness Index (max) 30% 30% 30% 30% 30% Plasticity Index (max) 3 3 3 3 NP 3 LA Abrasion Loss (max) 40% 40% 40% 40% 40% 40% Soundness Loss (max) 12% 12% 12% 12% 12% 15% Crushed Particles (min) +#4 Sieve50% 2-CF 100% 2-CF 50% 2-CF 30% 1-CF Foot Notes*1*1*1*1*1 *1The plasticity index may be waived if not more than 4% of the material passes the #40 sieve.
881.3 Sampling and Testing
Sampling ................................................................................................................ SD 201 Gradation ............................................................................................................... SD 202 Plasticity Index ....................................................................................................... SD 207 LA Abrasion Test................................................................................................... SD 204 Soundness Test (sodium sulfate solution, five cycles) .......................................... SD 220 Crushed Particle Test............................................................................................ SD 211 Flakiness Index Test.............................................................................................. SD 203 Page 531882 AGGREGATES FOR GRANULAR BASES AND SURFACING
882.1 General Requirements
The material will conform to the specifications for the particular material required by the contract. The material will be sound durable particles of ledge rock, gravel, recycled concrete pavement (RCA) removed from within the project limits, and sand. The material may include limited amounts of fine soil particles, but will be free of vegetation or organic debris, paper, metal, glass, and other foreign material.
882.2 Specific Requirements
Aggregates for granular bases and surfacing will conform to the requirements of Table 1. TABLE 1 *1The fraction passing the #200 sieve will not be greater than 2/3 of the fraction passing the #40 sieve. In no case will the upper limit specified for the #200 sieve be exceeded. *2Requirements apply to ledge rock other than limestone ledge rock. *3Acceptance of pit run will be by visual inspection. The Engineer may require a sieve analysis to verify the material meets the specified gradation. Independent Assurance will not be required.
882.3 Sampling & Testing
Sampling .......................................................................................................... SD 201 Gradation ......................................................................................................... SD 202 Liquid Limit and Plasticity Index ....................................................................... SD 207 LA Abrasion Test ............................................................................................. SD 204 Crushed Particles ............................................................................................. SD 211Limestone Ledge Rock REQUIREMENT SubbaseGravel Cushion Base CourseBase CourseGravel CushionGravel SurfacingPit RunGranular Bridge End Backfill Sieve Percent Passing 6 inch 100 2 inch 100 1 inch 70-100 100 100 100 100 100 3/4 inch 80-100 80-100 80-100 80-100 100 80-100 1/2 inch 68-91 68-91 68-90 68-90 68-91 #4 30-70 46-70 46-70 42-70 42-70 50-78 0-60 38-70 #8 22-62 34-58 34-58 29-53 29-53 37-67 28-58 #40 10-35 13-35 13-35 10-28 10-28 13-35 10-35 #200 0.0-15.0 3.0-12.0 3.0-12.0 3.0-12.0 3.0-12.0 4.0-15.0 0-20.0 0.0-5.0 Other Properties Liquid Limit (max) 25 25 25 25 25 Plasticity Index 0-6 0-6 0-6 0-3 0-3 4-12 0-6 LA Abrasion Loss (maximum)50 40 40 40 40 40 40 Crushed Particles (minimum) +#4 Sieve30% 1-CF 30% 1-CF 30% 1-CF 30% 1-CF 30% 1-CF 30% 1-CF 30% 1-CF Foot Notes *2*1,*2*3
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