AGGREGATE SPECIFICATION LIMITS & SAMPLING AND TESTING GUIDE

(See Specifications for Complete Details.)

TEST LIMITS	Spec #	F & T A	F & T C	LA Abrasion	Absorption	Chert	Shale	Clay Lumps	Plastic Index	Mortar Strength	Al₂O₃ Limit	Pore Index	Gradation Number
Fine Aggregate for PCC
PCC	4110						2						1
		Note: Maximum 40% between sieves
		Note: The fineness modulus must be no lower than 2.60.  A target fineness modulus (or base-line) will be established for each source at the time of approval.
		Note: Shale + Coal not to exceed 2% max.
PCC, Class L	4111						2			5200psi			1
		Note: Only from approved PCC sources.
		Note: Maximum 45% between sieves and must have a fineness modulus no lower than 2.30.
		Note: Shale + Coal not to exceed 2%max.
Intermediate Aggregate for PCC
Crushed Stone and Pea Gravel	4112	6						0.5			0.5
		Note: For Pea Gravel see Table 4112.03-2 for maximum allowable objectionable materials
Coarse Aggregate for PCC
Crushed Stone	4115
-Structural		6		50		2	1	0.5			0.5		3-5
-Nonstructural		6		50		3	1	0.5			0.5		3-5
		Note: See 4115.02 for maximum allowable objectionable materials.
Gravel	4115
-Structural		6		35		2	1	0.5					3-5
-Nonstructural		6		35		3	1	0.5					3-5
		Note: See 4115.02 for maximum allowable objectionable materials.
Bridge Deck
-Surfacing, Repair & Overlay		6		40	2.5	0.5					0.4		6
		Note: Unsound Chert+Shale+Coal+Iron not to exceed 1%.
		Note: Unsound Chert particles are defined in 4115.02.

TEST LIMITS	Spec #	F & T A	F & T C	LA Abrasion	Absorption	Chert	Shale	Clay Lumps	Plastic Index	Mortar Strength	Al₂O₃ Limit	Pore Index		Gradation Number
Class V Aggregate
	4117	6		40			2 (+#16)			1.5				7
		Note: Coarse Aggregates as in 4115 (except abrasion) and Fine Aggregates as in 4110.
Combination of Materials With Class V
Coarse Limestone
Limestone Screenings
		Note: See 4117 for cement requirements.
		Note: Acquire limestone from sources meeting the specified coarse aggregate durability class for PCC.
		Note: Must meet the requirements of 4115 and be only from sources acceptable as coarse aggregate.											8
Pipe Bedding for PCC
Aggregate	4118.02		15	50										3
		Note: >75% Crushed Gravel or Crushed Stone. Crushed PCC may be used if approved by the Engineer
Pipe Backfill
Aggregate	4119.02		15	45										10,11
		Note: >75% Crushed Gravel or Crushed Stone. Crushed PCC may be used if approved by the Engineer.
Granular Surfacing
Aggregate for Granular Shoulders	4120.02													Per 4120.02
		Note: Requirements are equivalent to 4120.04, 4120.05 or 4120.06.
Class C Gravel	4120.03		15				10							10
		Note: Percent of Clay Lumps + percent passing #200 sieve not to exceed 15%.
		Note: Percent of Clay Lumps + percent of (+4) shale + percent passing #200 not to exceed 20%.
Class A Crushed Stone	4120.04		15	45				4						11
		Note: For shoulders only; material with Al₂O₃ not exceeding 0.7 or A-freeze not exceeding 10 may have an abrasion Stone maximum of 55.
Class B Crushed Stone	4120.05		20	55				4						11
		Note: “C” Freeze + Abrasion not to exceed 65%
Class D Crushed Stone	4120.06
		Note: “C” Freeze, Abrasion, and Gradation to be specified by Contract Documents.
Paved Shoulders Fillets	4120.07		15	45				4						11
		Note: Material with Al₂O₃ not exceeding 0.7 or A-freeze not exceeding 10 may have an abrasion maximum of 55.

TEST LIMITS	Spec #	F & T A	F & T C	LA Abrasion	Absorption	Chert	Shale	Clay Lumps	Plastic Index	Mortar Strength	Al₂O₃ Limit	Pore Index	Gradation Number
Granular Subbase
	4121	25		50							1.5		12a(Cr. St.) 12b(Grav.)
		Note:    Combinations of crushed PCC, sand, crushed gravel, or crushed stone may be used.
		Specification limits are for crushed stone or crushed gravel.
Crushed Stone-Base
Macadam Stone	4122		10	50									13(Visual) Per 4122.02
		Note: Choke stone see 4122.03 for details; when produced from Macadam has certified inspection of 1/3000 ton.
Modified Subbase
	4123		15	45					7 (Gravel)		4.7(-#40)		14
		Note: Material with Al₂O₃ not exceeding 0.7 (+4) or A-freeze not exceeding 10 may have an abrasion maximum of 55.
		Note: If gravel only, 75% of +3/8” must be crushed with a minimum of one fractured face.
		Note: Reclaimed pavements meeting Materials IM 210 may be used with no more than 50% RAP.
Aggregate for Slurry Mixture
	4124.03	10		40			5				0.7		22 or 23
		Note: Friction Type 4 or better, sand equivalent of not less than 45, and organic materials maximum 0.01%.
Aggregate for Bituminous Sealcoat
	4125.03		10	40			5						1, 19-21
		Note: Friction Type 4 or better, shale on sand cover aggregate shall not exceed 2% maximum.
Coarse Aggregate for HMA
Type A	4127.02	10		45	6.0			0.5			0.7		Per Form 955
Type B
Primary	4127.02	25	10	45	6.0						1.5		Per Form 955
Non-Primary	4127.02	45	10	45	6.0						2.5		Per Form 955
		Note: Organic materials maximum 0.01%.
Fine Aggregate for HMA
	4127.03												Per Form 955
		Note: Organic materials maximum 0.01%.
		Note: Natural sand shall have no more than 50% retained between two consecutive sieves below the #4 sieve.
		Note: Crushed gravel or stone processed from coarse aggregate meeting requirements of 4127.02.

TEST LIMITS	Spec #	F & T A	F & T C	LA Abrasion	Absorption	Chert	Shale	Clay Lumps	Plastic Index	Mortar Strength	Al₂O₃ Limit	Pore Index	Gradation Number
Combination of Materials
Type A	4127.04												Per Form 955
		Note: The fine portion of combined materials shall not exceed 2% shale retained on the #16 sieve.
Type B		Note: The fine portion of combined materials shall not exceed 5% shale retained on the #16 sieve.
Revetment Stone		Note:  Rocks that split into layers less than 4” thick shall not be used.
Class A	4130.01	10		50							0.7	25	Visual
Class B	4130.01	10		50							0.7	25	Visual
Class D	4130.01		10	50									Visual
Class E and C	4130.01	10		50							0.7	25	Visual
		Note: See Specification 4130.01 for bedding plane/concrete slab thickness requirements.
		Note: See 4130.04 for gradation requirements.
Erosion Stone	4130.05		15	50				5					Visual
Gabion Stone	4130.08	10		50							0.7		Visual
		Note: See 4130.07 for gradation requirements.
Porous Backfill
	4131	10		50			5(+4)				0.7		29
		Note: Material shall be free of visible clay and objectionable clay coating.
Special Backfill
	4132.01												30,31
Crushed Stone/PCC/CCP/Reclaimed HMA; Mixtures of Gravel, Sand and Soil or Uniformly blended combinations of the above.
Gravel	4132.03								10				31
		Note: Organic material of no more than 1% on fraction passing the #40 sieve.
Granular Backfill
	4133		20	55				4					32*,**
		Note: “C” Freeze + Abrasion not to exceed 65%.
		*See 4133.04 for gradation when backfill is under flowable mortar.
Floodable Backfill	4134	**See 4134.02 for gradation requirements
Recycled PCC		Note: Recycled PCC and Recycled Composite must meet gradation and sampling frequency of the intended product; and meet the requirements of IM 210.
Recycled Composite