3138Aggregate for Surface And Base Courses

3138.1SCOPE

This Specification lists the quality requirements for Aggregates used for 2118, “Aggregate Surfacing,” 2211, “Aggregate Base,” and 2221, “Shoulder Base Aggregate.”

3138.2REQUIREMENTS

A General Provide Aggregates that have uniform: appearance, texture, moisture content, and performance characteristics. B Virgin Materials Provide virgin Aggregates meeting the following requirements:

Table 3138.2-1 Quality Requirements for Virgin Materials Requirement Class 1 and 2 3 and 4 5 6 Maximum Shale NA 7.0 percent 7.0 percent 7.0 percent Minimum Crushing Requirements * NA NA 25 percent 30 percent Maximum Los Angeles Rattler (LAR) loss from Carbonate quarry rock 40 percent 40 percent 40 percent 35 percent Maximum Insoluble residue for the portion of quarried Carbonate Aggregates passing the No. 200 Sieve 10 percent 10 percent 10 percent 10 percent Maximum amount of Brick 1.0 percent ǁ Maximum amount of other objectionable Materials including but not limited to: wood, plant matter, plastic, plaster, and fabric 0.1 percent ǁ * Material crushed from quarries is considered crushed Material. ǁ The Contractor/supplier may not knowingly allow brick and other objectionable Material and must employ a QC process to screen it out, before it becomes incorporated into the final product. C Recycled Materials The Contactor may substitute recycled Aggregates for virgin Aggregates, if they meet the following requirements:

Materials, recycled Aggregate Materials, or certified recycled glass (not allowed in (3), “Surfacing Aggregates.”)

Table 3138.2-2 Quality Requirements for Recycled Materials Requirement Class 1 Classes 3, 4, 5, and 6 Maximum Bitumen Content of Composite 4.0 percent 4.0 percent Maximum Masonry block percent 10 percent 10 percent Maximum percentage of glass * Not Allowed 10 percent Maximum size of glass * Not Allowed 3/4 inch Maximum amount of Brick 1.0 percent ǁ 1.0 percent ǁ Maximum amount of other objectionable debris including but not limited to: wood, plant matter, plastic, plaster, and fabric 0.2 percent ǁ† 0.2 percent ǁ† * Glass must meet certification requirements on the Grading and Base website . Combine glass with other Aggregates during the crushing operation. ǁ The Contractor/supplier may not knowingly allow brick and other objectionable Material and must employ a QC process to screen it out, before it becomes incorporated into the final product. † It is recognized that recycled Aggregates may occasionally contain debris, and the 0.2 percent requirement is meant to be an average requirement for each Material delivery.

Rattler of Carbonate virgin Aggregate is 40 percent. Meet all other virgin Aggregate requirements in 3138.2B, “Virgin Materials.”

D Surfacing Aggregates Provide surfacing Aggregates in accordance with 3138.2A, “General,” 3138.2B, “Virgin Materials,” and 3138.2C, “Recycled Materials,” and meeting the following requirements:

this modifies the requirements of Table 3138.2-3, Table 3138.2-4, and Table 3138.2-5 for surfacing Aggregates

of 5 - 12. In lieu of meeting the minimum clay content and PI, the requirements are fulfilled if one of the following are met:

limestone is added. Note: Class 2 must be composed of 100 percent crushed quarry rock per 3138.2B, “Virgin Materials,” Note (2). E Gradation Requirements

3138.2-3.

recycled concrete, conform to Table 3138.2-4.

3138.2-5.

95-100 percent passing the 1 inch Sieve may be used for the 1-2 feet fillet/rollover outside of a paved Shoulder for class 1 and class 2.

Aggregate) for classes 3, 4, 5 or 6, if used for base, subbase, or stabilizing Aggregate. Meet the gradation in Table 3138.2-6, and other requirements of 3138, “Aggregate for Surface and Base Courses,” except that there is no maximum bitumen content.

Table 3138.2-3 Base and Surfacing Aggregate (Containing less than 25 percent recycled Aggregates) Total Percent Passing * Sieve Size Class 1 (Surfacing ǁ) Class 2 (Surfacing †) Class 3 (Subbase) Class 4 (Subbase) Class 5 (Base) Class 6 (Base) 2 inch — — 100 100 — — 1 1/2 inch — — — — 100 100 1 inch — — — — — — 3/4 inch 100 100 — — 70 - 100 70 - 100 3/8 inch 65 - 95 65 - 90 — — 45 - 90 45 - 85 No. 4 40 - 85 35 - 70 35 - 100 35 - 100 35 - 80 35 - 70 No. 10 25 - 70 25 - 45 20 - 100 20 - 100 20 - 65 20 - 55 No. 40 10 - 45 12 - 35 5 - 50 5 - 35 10 - 35 10 - 30 No. 200 8.0 - 15.0 5.0 - 16.0 5.0 - 10.0 4.0 - 10.0 3.0 - 10.0 3.0 - 7.0 * If product contains recycled Aggregate, add letters in parentheses for each Aggregate blend designating the type of recycled products included in the mixture: (B) = Bituminous, (C) = Concrete,

Glass, (BCG) = Bituminous, Concrete, and Glass. ǁ Recycled concrete when used for surfacing is only allowed for Shoulders. † Class 2 must be composed of 100 percent crushed quarry rock per 3138.2B, “Virgin Materials,” Note (2). For 100 percent crushed quarried class 5 aggregate, the required passing the number 4 sieve is 30 – 80, the required passing the number 10 sieve is 15 – 65, the required passing the number 40 sieve is 7 – 35, and the required passing the Number 200 sieve is 3.0 – 12.0. The 1-1/2 inch, 3/4 inch, and 3/8 inch requirements for crushed quarried class 5 aggregate are the same as in Table 3138.2 -3.

Table 3138.2-4 Base and Surfacing Aggregate (Containing 25 percent or more recycled Aggregates & 75 percent or less recycled concrete) Total Percent Passing * Sieve Size Class 1 (Surfacing ǁ) Class 3 (Subbase) Class 4 (Subbase) Class 5 (Base) Class 6 (Base) 2 inch — 100 100 — — 1 1/2 inch — — — 100 100 1 inch — — — 3/4 inch 100 — — 70 - 100 70 - 100 3/8 inch 65 - 95 — — 45 - 90 45 - 85 No. 4 40 - 85 35 - 100 35 - 100 35 - 80 35 - 70 No. 10 25 - 70 20 - 100 20 - 100 20 - 65 20 - 55 No. 40 10 - 45 † 5 - 45 5 - 50 5 - 35 10 - 35 10 - 30 No. 200 5.0 - 15.0 † 0 - 15.0 0 - 10.0 0 - 10.0 0 - 10.0 0 - 7.0 * Add letters in parentheses for each Aggregate blend designating the type of recycled products included in the mixture: (B) = Bituminous, (C) = Concrete, (G) = Glass ,

ǁ Recycled concrete is only allowed for Shoulders. † Note: For Class 1, if the bitumen content is ≥ 1.5 percent, the gradation requirement is modified to 5 – 45 percent for the No. 40 Sieve and 0 – 15.0 percent for the No. 200 Sieve.

Table 3138.2-5 Base and Surfacing Aggregate (Containing more than 75 percent recycled concrete) Total Percent Passing * Sieve Size Class 1 (Surfacing ǁ) Class 3 (Subbase) Class 4 (Subbase) Class 5 (Base) Class 6 (Base) 2 inch — 100 100 100 100 1 1/2 inch — — — — — 1 inch — — — — — 3/4 inch 100 — — 45 - 100 45 - 100 3/8 inch 65 - 95 — — 25 - 90 25 - 85 No. 4 40 - 85 35 - 100 35 - 100 15 - 65 15 - 65 No. 10 25 - 70 20 - 100 20 - 100 10 - 45 10 - 45 No. 40 10 - 45 0 - 20 0 - 20 0 - 20 0 - 20 No. 200 5.0 - 15.0 0 - 6.0 0 - 6.0 0 - 6.0 0 - 6.0 * Add letters in parentheses for each Aggregate blend designating the type of recycled products included in the mixture: (B) = Bituminous, (C) = Concrete, (G) = Glass,

ǁ Recycled concrete is only allowed for Shoulders.

Table 3138.2-6 Reclamation Material Permitted as a Substitute for Class 3, 4, 5, or 6 Total Percent Passing Sieve Size Class 3 Class 4 Class 5 Class 6 3 inch* 100 100 100 100 3/4 inch - - 70 – 100 70 - 100 3/8 inch - - 45 – 90 45 - 85 No. 4 35 -100 35 -100 35 -80 35 - 70 No. 10 20 - 100 20 - 100 20 - 65 20 - 55 No. 40 5 - 50 5 - 35 10 - 35 10 - 30 No. 200 0 – 10.0 0 – 10.0 0 – 10.0 0 – 10.0 * Note for bedding within 2 feet of plastic pipe, the requirement is 100 percent passing the 1 inch Sieve.

3138.3SAMPLING AND TESTING

Report the No. 200 Sieve results to the nearest 0.1 percent and other Sieve results to the nearest 1 percent. A Sampling.............................................................................................. Grading and Base Manual B Sieve Analysis .......................................................... Laboratory Manual Methods 1202 and 1203 C Los Angeles Rattler Loss ........................................................... Laboratory Manual Method 1210 D Shale Tests .............................................................. Laboratory Manual Methods 1207 and 1209 E Bitumen Content ...................................................................... Laboratory Manual Method 1852 F Insoluble Residue ..................................................................... Laboratory Manual Method 1221 G Reclaimed Glass.............................................. AGI Visual Method (AGI Data sheet 15.1 and 15.2) H Particle Size Analysis ................................................................ Laboratory Manual Method 1302 I Liquid Limit Determination ....................................................... Laboratory Manual Method 1303 J Plastic Limit Determination ...................................................... Laboratory Manual Method 1304 K Crushing ................................................................................... Laboratory Manual Method 1214