SCOPE
704.01.01 Materials Covered. This specification covers the quality and size of mineral materials used in base
courses. REQUIREMENTS
704.02.01 General. Produce mineral aggregate from approved deposits. The use of aggregates from any
source may be prohibited when:
a.The character of the material is such, in the opinion of the Engineer, as to make improbable the furnishing of aggregates conforming to the requirements of these specifications.
b.That character of the material is such, in the opinion of the Engineer, that undue additional costs may be accrued by the State. The mineral aggregate shall be clean, hard, durable, free from frozen lumps, deleterious matter, and harmful adherent coatings.
704.02.02 Deficiencies. If the product of a deposit is deficient in material passing the 4.75 mm (No. 4) sieve,
filler from other approved deposits may be added at the crushing and screening plants.
704.02.0 3 Plastic Limits. When specified, aggregates shall conform to the applicable requirements of the
following table: TABLE I Percent Passing by Mass* 75 µm (No. 200) Sieve Plasticity Index Maximum 0-3 ................................ ....................................................... 15 4 ................................ ........................................................ 12 5 ................................ ......................................................... 9 6-8 ................................ ................................ ........................ 6 9-11 ....................................................................................... 4 12-15 ...................................................................................... 3 *Test Method No. Nev. T206. PHYSICAL PROPERTIES AND TESTS
704.03.01 Drain Backfill. This aggregate shall conform to one of the following requirements:
Percent Passing by Mass Sieve Size Type 1 Type 2 Type 3 50 mm (2 in.) ............................................... 100 ....................... — ........................ — 37.5 mm (1 1/2 in.) ....................................... 90-100 ..................... — ........................ — 25 mm (1 in.) ................................................ — ..................... 100 ....................... — 19 mm (3/4 in.) ................................ ........... 50-80 .................. 90-100 .................... — 9.5 mm (3/8 in.) ................................ .............. — .................... 20-55 .................... 100 4.75 mm (No. 4) .......................................... 24-40 .................... 0-10 ................... 60-90 1.18 mm (No. 16) ......................................... 10-24 ...................... — ..................... 26-60 150 μm (No. 100) ........................................... 0-4 ....................... 0-4 ...................... 0-4 75 μm (No. 200) ............................................ 0-2 ....................... 0-2 ...................... 0-2 Project Control Tests Test Method Requirements Sieve Analysis ................................ ................................ ............ Nev. T206 ................................ ............... Above Sampling Aggregate ................................ ................................... Nev. T200 ................................ .................. — Source Requirement Tests Test Method Requirements Percentage of Wear (500 Rev.) ............................................ AASHTO T96 ................................ ............ 37% Max. Unless otherwise specified in the contract documents, either Type 1, 2, or 3 may be used. 704 BASE AGGREGATES
704.03.02 Type 1 Class A Aggregate Base. This aggregate shall conform to the following requirements:
Sieve Size Percent Passing by Mass 37.5 mm (1 1/2 in.) ......................................................................... 100 25 mm (1 in.) ............................................................................ 80-100 4.75 mm (No. 4) .......................................................................... 30-65 1.18 mm (No. 16) ......................................................................... 15-40 75 μm (No. 200) ........................................................................... 2-12 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................................................... Nev. T200 .................................................. — Fractured Faces ................................ ................................ ......... Nev. T230 ............................................. 35% Min. Plasticity Index ........................................................................... Nev. T212 ............................................... Table I Liquid Limit ................................................................................. Nev. T210 .............................................. 35 Max. Source Requirement Tests Test Method Requirements Resistance (R Value) ................................ ................................. Nev. T115 .............................................. 70 Min. Percentage of Wear (500 Rev.) ................................ ............ AASHTO T96 ............................................ 45% Max.
704.03.03 Type 1 Class B Aggregate Base. This aggregate shall conform to the following requirements:
Sieve Size Percent Passing by Mass 37.5 mm (1 1/2 in.) ......................................................................... 100 25 mm (1 in.) ............................................................................ 80-100 4.75 mm (No. 4) .......................................................................... 30-65 1.18 mm (No. 16) ......................................................................... 15-40 75 μm (No. 200) ........................................................................... 2-12 Project Control Tests Test Method Requirements Sieve Analysis ................................ ................................ ............ Nev. T206 ................................ ............... Above Sampling Aggregate ................................ ................................... Nev. T200 ................................ .................. — Fractured Faces ......................................................................... Nev. T230 ................................ ............. 15% Min. Plasticity Index ........................................................................... Nev. T212 ................................ ............... Table I Liquid Limit ................................ ................................ ................. Nev. T210 ................................ .............. 35 Max. Source Requirement Tests Test Method Requirements Resistance (R Value) ................................................................. Nev. T115 ................................ .............. 70 Min. Percentage of Wear (500 Rev.) ................................ ............ AASHTO T96 ................................ ............ 45% Max.
704.03.04 Type 2 Class A Aggregate Base. This aggregate shall conform to the following requirements:
Sieve Size Percent Passing by Mass 25 mm (1 in.) .............................................................................. 100 19 mm (3/4 in.) ................................ .......................................... 90-100 4.75 mm (No. 4) .......................................................................... 35-65 1.18 mm (No. 16) ......................................................................... 15-40 75 μm (No. 200) ........................................................................... 2-10 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................................................... Nev. T200 .................................................. — Fractured Faces ................................ ................................ ......... Nev. T230 ............................................. 50% Min. Plasticity Index ........................................................................... Nev. T212 ............................................... Table I Liquid Limit ................................................................................. Nev. T210 .............................................. 35 Max. Source Requirement Tests Test Method Requirements Resistance (R Value) ................................ ................................. Nev. T115 .............................................. 78 Min. Percentage of Wear (500 Rev.) ................................ ............ AASHTO T96 ............................................ 45% Max. BASE AGGREGATES 704
704.03.05 Type 2 Class B Aggregate Base. This aggregate shall conform to the following requirements:
Sieve Size Percent Passing by Mass 25 mm (1 in.) .............................................................................. 100 19 mm (3/4 in.) ................................ .......................................... 90-100 4.75 mm (No. 4) .......................................................................... 35-65 1.18 mm (No. 16) ......................................................................... 15-40 75 μm (No. 200) ........................................................................... 2-10 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................................................... Nev. T200 .................................................. — Fractured Faces ................................ ................................ ......... Nev. T230 ............................................. 35% Min. Plasticity Index ........................................................................... Nev. T212 ............................................... Table I Liquid Limit ................................................................................. Nev. T210 .............................................. 35 Max. Source Requirement Tests Test Method Requirements Resistance (R Value) ................................ ................................. Nev. T115 .............................................. 70 Min. Percentage of Wear (500 Rev.) ................................ ............ AASHTO T96 ............................................ 45% Max.
704.03.06 Type 3 Class A Aggregate Base. All requirements will be specified in the Special Provisions.
704.03.07 Type 3 Class B Aggregate Base. All requirements will be specified in the Special Provisions.
704.03.08 Aggregate for Portland Cement Treated Base. This aggregate shall conform to the following
requirements: Sieve Size Percent Passing by Mass 25 mm (1 in.) .............................................................................. 100 19 mm (3/4 in.) ................................ .......................................... 90-100 4.75 mm (No. 4) .......................................................................... 35-75 1.18 mm (No. 16) ......................................................................... 15-45 75 μm (No. 200) ........................................................................... 2-15 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................ ................................... Nev. T200 ................................ .................. — Sand Equivalent ......................................................................... Nev. T227 ................................ ............. 20% Min. Source Requirement Tests Test Method Requirements Percentage of Wear (500 Rev.) ............................................ AASHTO T96 ................................ ............ 45% Max.
704.03.09 Shouldering Material. This aggregate shall conform to the following requirements:
Sieve Size Percent Passing by Mass 37 mm (1 1/2 in.) ........................................................................... 100 25 mm (1 in.) ............................................................................ 80-100 4.75 mm (No. 4) .......................................................................... 30-65 1.18 mm (No. 16) ......................................................................... 15-40 75 μm (No. 200) ........................................................................... 2-12 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................................................... Nev. T200 .................................................. — Plasticity Index ........................................................................... Nev. T212 .............................................. 12 Max.
704.03.10 Backfill. Acceptable material from excavation may be used for backfilling unless granular backfill is
specified and the material from excavation does not conform to the requirements therefore. The material shall conform to the following requirem ents: Sieve Size Percent Passing by Mass 75 mm (3 in.) .............................................................................. 100 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................................................... Nev. T200 .................................................. — 704 BASE AGGREGATES
704.03.11 Granular Backfill. Granular backfill shall consist of natural sand or a mixture of sand with gravel,
crushed gravel, or crushed stone and shall conform to the following requirements: Sieve Size Percent Passing by Mass 75 mm (3 in.) .............................................................................. 100 4.75 mm (No. 4) ......................................................................... 35-100 600 μm (No. 30) ......................................................................... 20-100 75 μm (No. 200) ........................................................................... 0-12 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................................................... Nev. T200 .................................................. — Liquid Limit ................................................................................. Nev. T210 .............................................. 35 Max. Plasticity Index ........................................................................... Nev. T212 .............................................. 10 Max. Granular backfill shall also conform to the following requirements based on usage: Culverts and Structures (Concrete) Culverts (Aluminum and Plastic ) Culverts (Steel) Source Requirement Tests Test Method Requirements Requirements pH Value ............................................. AASHTO T289 ............................. 5.0 to 9.5 .................................... 6.0 to 9.0. Resistivity ............................................ AASHTO T288 ...................... 1000 ohm ⋅cm Min. ...................... 2000 ohm⋅cm Min. Do not use pea gravel as granular backfill. Pea gravel is typically a byproduct of aggregate crushing and/or screening operations. It is uniformly graded, normally having a nominal size of 9.5 mm (3/8 in.) Cold millings will not be allowed for use as granular backfill.
704.03.12 Borrow. The material shall conform to the following requirements:
Source Requirement Tests Test Method Requirements Resist ance (R Value) ................................................................. Nev. T115 ................................ .............. 45 Min.
704.03.13 Selected Borrow. The material shall conform to the following requirements:
Sieve Size Percent Passing by Mass 75 mm (3 in.) ................................ ...................................................... 100 Project Control Tests Test Method Requirements Sieve Analysis ............................................................................ Nev. T206 ............................................... Above Sampling Aggregate ................................................................... Nev. T200 .................................................. — Source Requir ement Tests Test Method Requirements Resist ance (R Value) ................................................................. Nev. T115 ................................ .............. 45 Min. 527 SECTION 705 AGGREGATES FOR BITUMINOUS COURSES SCOPE
705.01.01 Materials Covered. This specification covers the quality and size of local mineral materials and
commercial mineral fillers used in bituminous courses. REQUIREMENTS
705.02.01 General. Provide mineral aggregate from approved deposits. The use of aggregates from any
source may be prohibited when:
a.The character of the material is such, in the opinion of the Engineer, as to make improbable the furnishing of aggregates conforming to the requirements of these specifications.
b.The character of the material is such, in the opinion of the Engineer, that undue additional costs may be accrued by the State. The mineral aggregate shall be clean, hard, durable, free from frozen lumps, deleterious matter, and harmful adherent coatings. Crush and incorporate material between the sizes of the 250 mm (10 in.) in largest dimension and larger than the maximum size specified for a given product, into that specified finished product. Do not produce other products simultaneously by “bleeding off” aggregates. When Type 2C plantmix aggregate is specified for dense-graded plantmix, produce Type 2C and Open-Graded plantmix aggregates by screening all natural fines passing the 9.5 mm (3/8 in .) sieve from the coarse aggregate. Such fines may be reintroduced into the mix at a rate not to exceed 10% by dry mass of the combined aggregates. Stockpile such fines separately from other sizes of aggregate. Use natural fines only when all applicable mix design criteria have been met.
705.02.02 Deficiencies. If the product of any deposit is deficient in the fraction passing the 4.75 mm (No. 4)
sieve, additional filler from other approved deposits meeting the physical requirements may be added. Add the additional material to the drier in a uniform manner from a separate stockpile. If the added material is a commercial mineral filler, uniformly feed it directly to the plant. Do not construe this as a waiver of any of the requirements contained herein. PHYSICAL PROPERTIES AND TESTS
705.03.01 Plantmix Bituminous Surface Aggregates. The aggregate shall conform to the following
requirements: Percent Passing by Mass Sieve Size Type 2 Type 2C Type 3 25 mm (1 in.) ............................................... 100 ..................... 100 ....................... — 19 mm (3/4 in.) .......................................... 90-100 .................. 88-95 ..................... — 12.5 mm (1/2 in.) ............................................. — ..................... 70-85 .................... 100 9.5 mm (3/8 in.) ........................................... 63-85 ................... 60-78 ................. 85-100 4.75 mm (No. 4) .......................................... 45-63 ................... 43-60 .................. 50-75 2 mm (No. 10) ............................................ 30-44 ................... 30-44 .................. 32-52 1.18 mm (No. 16) ............................................ — ........................ — ........................ — 425 µm (No. 40) .......................................... 12-22 ................... 12-22 .................. 12-26 75 µm (No. 200) ............................................ 3-8 ....................... 3-8 ...................... 3-8 PROJECT CONTROL TESTS TEST METHOD REQUIREMENTS Sieve Analysis Nev. T206 Above Sampling Aggregate Nev. T200 — Fractured Faces (Type 3 Plantmix Aggregate) Nev. T230 35% Min. , 1 Fracture Min. (a) Fractured Faces (Type 2 or 2C Plantmix Aggregate) Nev. T230 80% Min. , 2 Fractures Min. (a) Plasticity Index (Blending with sand to eliminate plasticity will not be permitted) Nev. T212 10 Max. (a) Liquid Limit Nev. T210 35 Max. (a) Absorption of Coarse Aggregate Nev. T111 4% Max. (a)
a.Individual stockpiles before marination.
Source: Nevada Standard Specifications for Road and Bridge Construction, 2014 Edition. Pages 529–532 of 610.