901 — AGGREGATES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CATEGORY 900 MATERIALS SECTION 901 — AGGREGATES 901.01 This Section includes the material details, quality requirements, and test methods applicable to aggregates. Grading requirements are outlined in Tables 901 A and 901 C; physical properties in 901 B and 901 D. Force drying may be used in the preparation of samples for grading tests conducted in the field. TABLE 901 A AGGREGATE GRADING REQUIREMENTS - T 27 SIEVE SIZE 2- 1/2” 2” 1- 1/2” 1” 3/4” 1/2” 3/8” No. No. No. No. No. No. No. No. No. MATERIALS mm mm 37.5 mm mm mm 12.5 mm 9.5 mm 4.75 mm 2.36 mm 2.0 mm 1.18 mm µm µm µm µm µm CRUSHER RUN AGGREGATE CR -6 (f)(g) — 100 90- — 60- — — 30- — — — — — — — 0-15 BANK RUN GRAVEL — SUBBASE 100 — — 90- — 60- — — — 35- — — 20- — — 5-25 GRADED AGGREGATE — BASE DESIGN RANGE (a) — 100 95- — 70- — 50- 35- — — — 12- — — — 0-8 TOLERANCE (b) — (-)2 ±5 — ±8 — ±8 ±8 — — — ±5 — — — ±3( c) BANK RUN GRAVEL — BASE 100 — — 85- — 60- — — — 35- — — 20- — — 3-20 57 and UNDERD RAIN (h) — — 100 95- — 25- — 0- 0-5 — — — — — — — 67 — — — 100 90- — 20- 0- 0-5 — — — — — — — COARSE AGGREG ATE - PORTLA ND CEMENT CONCRE TE 7 — — — — 100 90- 40- 0- 0-5 — — — — — — — 901 — AGGREGATES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS FINE AGGREGATE — PORTLAND CEMENT CONCRETE, UNDERDRAIN, and PNEUMATIC MORTAR (d) — — — — — — 100 95- — — 45- — — 5- 0- — COARSE AGGREGATE — LIGHTWEIGHT PORTLAND CEMENT CONCRETE — — — 100 90- — 10- 0- — — — — — — — — FINE AGGREGATE — LIGHTWEIGHT PORTLAND CEMENT CONCRETE (d) — — — — — — 100 85- — — 40- — — 10- 5- — FINE AGGREGATE/SAND MORTAR and EPOXIES (d) — — — — — — — 100 95- — — — — — 0- 0-10 MINERAL FILLER — — — — — — — — — — — 10 — 95- — 70-
a.To establish target values for design.
b.Production tolerance.
c.±2 for field grading (omitting T 11).
d.Fine aggregate includes natural or manufactured sand.
e.Crushed glass shall not contain more than one percent contaminants by weight.
f.Not to be used in the structural part of any Administration project.
g.Recycled asphalt pavement may be used as a component not to exceed 15 percent and is not subject to aggregate physical property requirements in TABLE 901 B.
h.Recycled concrete is prohibited in drainage applications. 901 — AGGREGATES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS TABLE 901 B AGGREGATE PHYSICAL PROPERTY REQUIREMENTS TEST METHOD T 90 T 11 T 96 T 104 MATERIAL SPECIFICATION PI MAX MATERIAL FINER THAN No. 200 SIEVE %MAX LOS ANGELES ABRASION %MAX SODIUM SULFATE SOUNDNESS %MAX CRUSHER RUN AGGREGATE CR-6 D1241(a) 6 — 50 12 BANK RUN GRAVEL — SUBBASE D1241 6 — 50 12 GRADED AGGREGATE — BASE D1241 6 — 50 12 BANK RUN GRAVEL — BASE D1241 6 — 50 12 COARSE AGGREGATE — PCC (b) M 80 CLASS A — 1.0(c) 50 12 FINE AGGREGATE — PCC (b)(d) M 6 CLASS B — 4.0(e) — 10 COARSE AGGREGATE — LIGHTWEIGHT PCC M 195 — — — — FINE AGGREGATE — LIGHTWEIGHT PCC (f) M 195 — — — — FINE AGGREGATE/SAND MORTAR and EPOXIES M 45 — — — 10 MINERAL FILLER (g) M 17 4 — — — GLASS CULLET (h) M 318 — — — —
a.Other approved inert materials of similar characteristics may be used provided they meet these provisions. For crushed reclaimed concrete, the soundness loss shall not exceed 18 percent after magnesium sulfate testing as specified in T 104.
b.Test coarse and fine aggregate for PCC for alkali silica reactivity (ASR) per 902.10.
c.1.5 if material passing No. 200 sieve is dust of fracture, free of clay or shale.
d.In areas exposed to traffic, manufactured sand shall have a minimum ultimate Dynamic Friction Value (DFV) of 40, based on the parent rock.
e.5.0 for concrete not subject to surface abrasion.
f.Fine aggregate meeting M 6 may be used if the lightweight concrete does not exceed the maximum unit weight specified in the Contract Documents. 901 — AGGREGATES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS
g.Fly ash shall not exceed 12 percent loss on ignition.
h.For use as a granular road base material. Not intended for use in locations where surfacing will not be placed over the base. TABLE 901 C ASPHALT MIXES AGGREGATE GRADING REQUIREMENTS, % PASSING FOR MIX DESIGN T 27 SIEVE SIZE 3/4in. 1/2in. 3/8in. No. No. No. No. No. No. No. 200MATERIAL 19.0 mm 12.5 mm 9.5 mm 4.75 mm 2.36 mm 1.18 mm µm µm µm µm GAP GRADED STONE MATRIX ASPHALT MIX - 9.5 mm 100 100 75– 30– 20– 30 — — — — 8– GAP GRADED STONE MATRIX ASPHALT MIX -12.5 mm 100 90–99 70– 28– 18– 30 — — — — 8– GAP GRADED STONE MATRIX ASPHALT MIX -19.0 mm 100 82–88 60 max 22– 14– 20 — — — — 9– OPEN GRADED FRICTION COURSE – 9.5 mm (a) — 100 85– 20– 5– 10 — — — — 2–4 OPEN GRADED FRICTION COURSE – 12.5 mm (a) 100 85– 55– 15– 5– 10 — — — — 2–4 OPEN GRADED FRICTION COURSE – 12.5 mm (b) 100 80– 35– 10– 5– 10 — — — — 1–4 TYPE II — — 100 90– 65– 45– 30– 18– 10– 5– SLURRY SEAL (SS) AND MICRO - SURFACING (MS) TYPE III — — 100 70– 45– 28– 19– 12– 7– 5– 7 100 90– 40– 0– 15 0–5 — — — — —CHIP SEAL SURFACE TREATMENT 8 — 100 85– 10– 0– 10 0–5 — — — —
a.Less than Design Level 4 (ESAL)
b.Porous European Mix (PEM) – Design Level 4 (ESAL) 901 — AGGREGATES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS TABLE 901 D AGGREGATE PHYSICAL PROPERTY REQUIREMENTS FOR ASPHALT MIXES TEST METHOD T 11 T 96 T 104 D4791 MSMT MATERIAL S P E C I F I C A T I O N MATERIAL FINER THAN No. 200 SIEVE % max LOS ANGELES ABRASION (LA) % max SODIUM SULFATE SOUNDNESS % max FLAT and ELONGATED (a) % max DYNAMIC FRICTION VALUE (DFV)
b.(c) min SURFACE COURSE 4.75 mm, 9.5 mm, 12.5 mm, and 19.0 mm M323 — 45 12 10 25 SURFACE COURSE — HIGH DFV 4.75 mm, 9.5 mm, 12.5 mm, and 19.0 mm M323 — 45 12 10 40 (e) BASE COURSE 19.0 mm, 25.0 mm and 37.5 mm M323 — 45 12 10 — GAP GRADED STONE MATRIX ASPHALT 9.5 mm, 12.5 mm, and 19.0 mm M323 — 30 12 20/5 (g) 40 (e) 901 — AGGREGATES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS OPEN GRADED FRICTION COURSE 9.5 mm, 12.5 mm, 12.5 mm PEM (h) MSMT 409 0.5 30 12 20/5 (g) 40 (e) SLURRY SEAL (SS) and MICRO- SURFACING (MS) — — — 12 — 40 (f) CHIP SEAL SURFACE TREATMENT M 80, CLASS A 1.0 (d) 45 — — —
a.Testing for flat and elongated particles shall be conducted on the blended aggregates. Dimensional ratio of calipers shall be 5:1.
b.The minimum Dynamic Friction Value (DFV) shall be based on a single aggregate source or a blend of aggregates used. Determine proportions of blended aggregates using MSMT 416.
c.DFV determined on parent rock. Reclaimed Asphalt Pavement (RAP) shall have a DFV of 30.0.
d.1.0 for samples taken at the point of production. Samples taken at any point after shipment shall have no more than 1.5 percent finer than 0.075 mm sieve.
e.Carbonate rock shall have a minimum of 25 percent insoluble residue retained on the 0.075 mm sieve.
f.No blending allowed.
g.Testing conducted on particles retained on the 4.75 mm sieve. Dimensional ratio of calipers shall be 3:1/5:1.
h.Porous European Mix.
901.01.01 Steel Slag. Steel slag may be used for chip seal surface treatment, but not for any other
aggregate.
901.02 Stone for Riprap, Channels, Ditches, Slopes, and
GABIONS Use field or quarry stone of approved quality. Stone may be certified from a source previously approved. Ensure that maximum dimension does not exceed four times the minimum dimension.
901.02.01 Stone for Riprap. Ensure that stone for riprap is uniformly graded from the smallest
to the largest pieces as specified in the Contract Documents. The stone will be accepted upon visual inspection at the point of usage, as follows: 901 — AGGREGATES 2026 STANDARD SPECIFICATIONS FOR CONSTRUCTION AND MATERIALS CLASS OF RIPRAP SIZE PERCENT OF TOTAL by weight Heavier than 33 lb Heavier than 10 lb Less than 1 lb 10 max I Heavier than 150 lb Heavier than 40 lb Less than 2 lb 10 max II Heavier than 700 lb Heavier than 200 lb Less than 20 lb 10 max III Heavier than 2000 lb Heavier than 600 lb Less than 40 lb 10 max Note: Optimum gradation is 50 percent of the stone being above and 50 percent below the midsize. Reasonable visual tolerances will apply.
901.03 Stone for Channels and Ditches
Meet the size requirements of Class I Riprap and the following: QUALITY REQUIREMENTS TEST AND METHOD SPECIFICATION LIMITS Apparent Specific Gravity T 85, min 2.50 Absorption T 85, % max 3.0 Sodium Sulphate Soundness - 5 cycles, 2-1/2 to 1-1/2 in. Aggregate T 104, % loss max
901.04 Stone for Slopes
M 43, size number 1 omitting T 11. The stone shall also meet the quality requirements specified in 901.03.
901.05 Stone for Gabions
Meet the quality requirements specified in 901.03 except the loss by sodium sulfate shall not be greater than 12 percent: DEPTH OF BASKET in. SIZE OF INDIVIDUAL PIECES * in. 6 3-6 9 4-7 12 4-7 18 4-7 36 4-12 *Size of pieces will be determined visually.
Referenced in this section
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Source: Standard Specifications for Construction and Materials, 2026 Edition. Pages 938–944 of 1,138. View official source ↗