3149Granular Material

3149.1SCOPE

This Specification lists the requirements for granular Materials used for granular subbase, structural bedding, and backfill.

3149.2REQUIREMENTS

Provide certified granular Material meeting the specified requirements. Certify granular Materials on Form G&B-104. Provide Material that has similar appearance, texture, moisture content, and performance characteristics. Report the No. 200 Sieve results to the nearest 0.1 percent and other Sieves to the nearest whole number. A Granular Materials A.1 Virgin Materials Provide virgin Aggregate meeting the following requirements:

Aggregates, passing the No. 200 Sieve is no greater than 10 percent A.2 Recycled Materials For products not required to be 100 percent virgin Aggregates, the Contractor may substitute recycled Aggregates for virgin Aggregates, if the recycled Aggregates meet the following requirements:

recycled concrete Materials, and recycled Aggregate Materials

limited to wood, plant matter, plastic, plaster, and fabric, is 0.1 percent B Granular and Select Granular Materials Provide granular Materials meeting the requirements of Table 3149.2-1.

Table 3149.2-1 Granular and Select Granular Material Gradation Ratio Requirements Material Type Percent Passing Ratio No. 200/1 inch Percent Passing Ratio No. 40/No. 10 Percent Passing Ratio No. 200/No. 10 Granular Material 0 - 20 Not Applicable Not Applicable Select Granular Material 0 - 12 Not Applicable Not Applicable Select Granular Material (Super Sand) Not Applicable 0 - 65 0 - 10 Select Granular Material Modified 10 percent 0 - 10 Not Applicable Not Applicable C Stabilizing Aggregate Provide stabilizing Aggregate meeting the same requirements as required for the base. If base is not specified in the Contract meet the requirements of class 5 per 3138, “Aggregate for Surface and Base Courses.” D Structure Backfill Materials Materials in this section are intended to be used as backfill adjacent to S tructures. D.1 Granular Backfill Provide granular backfill meeting the requirements of Table 3149.2-2. Table 3149.2-2 Granular Backfill Requirements Percent Passing 3 inch Sieve Percent Passing Ratio No. 200/1 inch 100 0 - 20 D.2 Structural Backfill Provide 100 percent virgin structural backfill meeting the requirements of Table 3149.2-3, and the following: Table 3149.2-3 Structural Backfill Requirements Requirement Percent 3/4 inch Sieve 100 passing Percent Passing Ratio # 40/# 10 0 – 65 passing No.200 Sieve 0 – 5.0 passing Clay Percentage as Determined by MnDOT Test Method 1302 1.5 maximum

3137.2B,”Classification,” for Class C. D.3 Select Granular Backfill Provide select granular backfill meeting the requirements of Table 3149.2-4.

Table 3149.2-4 Select Granular Backfill Requirements Percent Passing 3 inch Sieve Percent Passing Ratio No. 200/1 inch 100 0 - 12 E Aggregate Backfill Provide Aggregate backfill meeting the requirements of Table 3149.2-5. Table 3149.2-5 Aggregate Backfill Gradation Requirements Sieve Size Percent Passing 2 inch 100 No. 4 35 - 100 No. 10 20 - 70 No. 40 10 - 35 No. 200 3 - 10.5 F Granular Bedding Provide granular bedding meeting the requirements of Table 3149.2-6. Table 3149.2-6 Granular Bedding Gradation Requirements Sieve Size Percent Passing 1 inch 100 No. 200 0 - 10.5 G Aggregate Bedding Provide Aggregate bedding meeting the type specified. G.1 Fine Aggregate Bedding Provide fine Aggregate bedding meeting the requirements in 3138, “Aggregate for Surface and Base Courses,” for Class 5. For bedding non-aluminized and non-aluminum pipe, provide Aggregate composed of less than 75 percent recycled concrete and less that 75 percent recycled bituminous. For bedding aluminized and aluminum pipe, do not provide Aggregate composed of recycled concrete or crushed quarried Carbonate rock. G.2 Coarse Aggregate Bedding Provide 100 percent virgin coarse Aggregate bedding meeting the requirements of Table 3149.2-7. For bedding aluminized and aluminum pipe, do not provide Aggregate composed of quarried Carbonate rock.

Table 3149.2-7 Coarse Aggregate Bedding Gradation Requirements Sieve Size Percent Passing 1 1/2 inch 100 No. 4 0 - 10 G.3 Conduit Aggregate Bedding Provide 100 percent virgin conduit Aggregate bedding meeting the requirements of Table 3149.2-8. Table 3149.2-8 Conduit Aggregate Bedding Gradation Requirements Sieve Size Percent Passing No. 4 100 No. 200 0 - 8.5 H Coarse Filter Aggregate Provide 100 percent virgin coarse filter Aggregate, meeting the requirements of Table 3149.2-9. The maximum Los Angeles Rattler (LAR) loss from Carbonate quarry rock is 40 percent. Table 3149.2-9 Coarse Filter Aggregate Gradation Requirements Sieve Size Percent Passing 1 inch 100 3/4 inch 85 - 100 3/8 inch 20 - 60 No. 4 0 - 10 I Filter Aggregates Provide filter Aggregate meeting the requirements of the type specified. I.1 Medium Filter Aggregate Provide naturally rounded and 100 percent virgin medium filter Aggregate meeting the requirements of Table 3149.2-10 and the following. Table 3149.2-10 Medium Filter Aggregate Gradation Requirements Sieve Size Percent Passing 3/4 inch 100 3/8 inch 50 - 100 No. 4 10 - 60 No. 10 0 - 15 No. 40 0 - 4 No. 200 0 - 2.5

No. 4 Sieve is 5.0 percent.

considered crushed Material.

I.2 Fine Filter Aggregate Provide 100 percent virgin fine filter Aggregate meeting the requirements of Table 3149.2-11. Table 3149.2-11 Fine Filter Aggregate Gradation Requirements Sieve Size Percent Passing 3/8 inch 100 No. 4 90 - 100 No. 10 45 - 90 No. 40 5 - 35 No. 200 0 - 3.5 J Sand Cover Provide 100 percent virgin natural glacial Material meeting the requirements of Table 3149.2-12. Table 3149.2-12 Sand Cover Gradation Requirements Sieve Size Percent Passing No. 4 100 No. 10 95 - 100 No. 40 0 - 50 No. 200 0 - 8.5

3149.3SAMPLING AND TESTING

Sample and test at the rates specified in the Schedule of Materials Control . A Sampling.............................................................................................. Grading and Base Manual B Sieve Analysis .............................................................. Laboratory Manual Methods 1202 &1203 C Crushing ................................................................................... Laboratory Manual Method 1214 D Bitumen Content ...................................................................... Laboratory Manual Method 1852 E Insoluble Residue ..................................................................... Laboratory Manual Method 1221 F Light Weight Pieces in Aggregate .............................................. Laboratory Manual Method 1207 G Lithological Count ..................................................................... Laboratory Manual Method 1209 H Direct Shear Test of Soils under Consolidated Drained Conditions ................................... Laboratory Manual Method 1309 I Los Angeles Rattler Loss ........................................................... Laboratory Manual Method 1210 J Particle Size Analysis ................................................................ Laboratory Manual Method 1302

Bituminous Material