JA-7_AKDOT_Standard_Aggregates_Specs.pdf

343 ALASKA 2004

SECTION 703

AGGREGATES

703-2.01 FINE AGGREGATE FOR CONCRETE. Meet AASHTO M 6, Class A, except as follows:

Delete paragraph 8.2 of AASHTO M 6.

Delete the following methods of sampling and testing:

AASHTO T 11 Amount of Material Finer than No. 200 Sieve AASHTO T 27 Sieve Analysis AASHTO T 103 Soundness (freezing and thawing)

And substitute the following:

WAQTC FOP for AASHTO T 27/T 11 Sieve Analysis of Fine and Coarse Aggregates and

Material Finer Than No. 200 Sieve in Mineral Aggregates by Washing

Add the following: Meet AASHTO T 104 using sodium sulfate solution.

In AASHTO M 6, Section 7.1, table entitled “Deleterious Substances Limits”, change the maximum percent of material by mass finer than No. 200 Sieve in a. (concrete subject to surface abrasion), from 2.0 to 3.0.

703-2.02 COARSE AGGREGATE FOR CONCRETE. AASHTO M 80, class B, except as follows:

Delete the following methods of sampling and testing:

AASHTO T 11 Amount of Material Finer than No. 200 Sieve AASHTO T 27 Sieve Analysis

And substitute the following:

WAQTC FOP for AASHTO T 27/T 11 Sieve Analysis of Fine and Coarse Aggregates and

Material Finer Than No. 200 Sieve in Mineral Aggregates by Washing

Add the following: Meet AASHTO T 104 using sodium sulfate solution.

703-2.03 AGGREGATE FOR BASE AND SURFACE COURSE. Crushed stone or crushed gravel, consisting of sound, tough, durable pebbles or rock fragments of uniform quality. Free from clay balls, vegetable matter, or other deleterious matters. Meet the following requirements:

TABLE 703-1

PROPERTY BASE COURSE SURFACE COURSE TEST METHOD

L.A. Wear,% 50, max. 45, max. AASHTO T 96 Degradation Value 45, min. 45, min. ATM 313 Fracture,% 70, min. 70, min. WAQTC FOP for

AASHTO TP 61

Liquid Limit --- 35, max. WAQTC FOP for

AASHTO T 89

Plastic Index 6, max. 10, max. WAQTC FOP for

AASHTO T 90

Sodium Sulfate Loss,% 9, max. (5 cycles) 9, max. (5 cycles) AASHTO T 104

Attachment JA-7

344 ALASKA 2004

Meet the following gradations, as determined by WAQTC FOP for AASHTO T 27/T 11:

TABLE 703-2

AGGREGATE FOR BASE AND SURFACE COURSE

Percent Passing By Weight

SIEVE GRADATION

BASE COURSE SURFACE COURSE

C-1 D-1 E-1 F-1

1-1/2 in. 100 1 in. 70-100 100 100 100

3/4 in. 60-90 70-100 70-100 85-100 3/8 in. 45-75 50-80 50-85 60-100 No. 4 30-60 35-65 35-65 50-85 No. 8 22-52 20-50 20-50 40-70

No. 50 8-30 8-30 15-30 25-45 No. 200 0-6 0-6 8-15 8-20

703-2.04 AGGREGATE FOR ASPHALT CONCRETE PAVEMENT.

Coarse Aggregate (retained on the No. 4 sieve). Crushed stone or crushed gravel consisting of sound, tough, durable rock of uniform quality. Free from clay balls, vegetative matter, or other deleterious matters. Not coated with dirt or other finely divided mineral matter. Meet the following requirements:

L.A. Wear, % AASHTO T 96 45, max.

Degradation Value ATM 313 30, min.

Sodium Sulfate Loss,% AASHTO T 104 9, max. (5 cycles) Fracture,% WAQTC FOP for AASHTO TP 61 80, min. (single face) Flat - Elongated Pieces,% ATM 306 8%, max.

Fine Aggregate (passing the No. 4 sieve). Meet the quality requirements of AASHTO M 29, including S1.1, Sulfate Soundness.

Blended Aggregate. Blend the aggregate fractions to meet the grading requirements of Table 703-3, as determined by WAQTC FOP for AASHTO T 27/T 11. Ensure that the fraction actually retained between any two consecutive sieves larger than the No. 100 sieve is not less than 2% of the total.

TABLE 703-3

BROAD BAND GRADATIONS FOR ASPHALT CONCRETE PAVEMENT AGGREGATE

Percent Passing by Weight

SIEVE GRADATION

Type I Type II Type III 1 in. 100

3/4 in. 80-90 100 1/2 in. 60-84 75-90 100 3/8 in. 48-78 60-84 80-90 No. 4 28-63 33-70 44-81 No. 8 14-55 19-56 26-70

No. 16 9-44 10-44 16-59 No. 30 6-34 7-34 9-49 No. 50 5-24 5-24 6-36 No. 100 4-16 4-16 4-22 No. 200 3-7 3-7 3-7

345 ALASKA 2004

703-2.05 AGGREGATE FOR COVER COAT AND SURFACE TREATMENT. Crushed stone or crushed gravel, consisting of sound, tough, durable pebbles or rock fragments of uniform quality.

Free from clay balls, vegetable matter, or other deleterious matters, and with no adherent films or coatings of dirt, clay, dust or other deleterious matter that could impede adherence of the bituminous material. Wash the aggregate if necessary. Meet the following requirements:

L.A. Wear,% AASHTO T 96 45, max.

Degradation Value ATM 313 50, min.

Sodium Sulfate loss,% AASHTO T 104 9, max. (5 cycles) Fracture,% WAQTC FOP for AASHTO TP 61 90, min. (single face)

At least 15 days before beginning work, submit a representative 30-pound sample of the aggregate and 1-quart sample of the bituminous material proposed for use in the work. The Department will test the materials using ATM 414 as submitted (that is, without addition of anti-stripping additives). The Department will reject materials failing to meet or exceed 70% retention of the asphalt, unless you provide approved anti-stripping additives or employ other approved measures which correct this deficiency.

Cover Coat Material. Meet the gradation requirements of Table 703-4, as determined by WAQTC FOP for AASHTO T 27/T 11.

TABLE 703-4

REQUIREMENTS FOR GRADING OF COVER COAT MATERIAL

Percent Passing By Weight

SIEVE TYPE 2 COVER TYPE 3 COVER AGGREGATE

AGGREGATE Grading A Grading B Grading C

1/2 in. -- -- -- 100 3/8 in. 100 100 100 90-100 No. 4 85-100 85-100 60-100 10-30 No. 8 -- 0-25 0-10 0-8 No. 50 0-20 -- -- --

No. 200 0-1 0-1 0-1 0-1

Surface Treatment Material. Meet the gradation requirements of Table 703-5, as determined by WAQTC FOP for AASHTO T 27/T 11.

TABLE 703-5

REQUIREMENTS FOR GRADING OF AGGREGATE FOR ASPHALT SURFACE TREATMENT

SIEVE GRADING

Percent Passing by Weight

A B C D E F G 1-1/2 in. 100 -- -- -- -- -- --

1 in. 90-100 100 -- -- -- -- -- 3/4 in. -- 90-100 100 -- -- -- -- 1/2 in. 0-15 20-55 90-100 100 100 -- -- 3/8 in. -- 0-15 40-75 90-100 90-100 100 100 No. 4 -- -- 0-15 0-10 10-30 75-100 85-100 No. 8 -- -- 0-5 0-5 0-8 0-10 60-100

No. 200 0-1 0-1 0-1 0-1 0-1 0-1 0-10

703-2.06 MINERAL FILLER. Meet AASHTO M 17.

346 ALASKA 2004

703-2.07 SELECTED MATERIAL. Meet the following requirements for the type specified. Obtain the Engineer’s approval for the intended purpose, prior to use on the project.

1. Type A. Aggregate containing no muck, frozen material, roots, sod or other deleterious matter and with a plasticity index not greater than 6 as tested by WAQTC FOPs for AASHTO T 89 and T 90. Meet the following gradation as tested by WAQTC FOP for AASHTO T 27/T 11:

Sieve Percent Passing by Weight No. 4 20-55% No. 200 0-6%, determined on the minus 3-inch portion of the sample

2. Type B. Aggregate containing no muck, frozen material, roots, sod or other deleterious matter and with a plasticity index not greater than 6 as tested by WAQTC FOPs for AASHTO T 89 and T 90. Meet the following gradation as tested by WAQTC FOP for AASHTO T 27/T 11:

Sieve Percent Passing by Weight No. 200 0-10% determined on the minus 3-inch portion of the sample

3. Type C. Earth, sand, gravel, rock, or combinations thereof containing no muck, peat, frozen material, roots, sod, or other deleterious matter and is compactable under the provisions of Subsections 203-3.04 or 203-3.05.

703-2.08 FILTER BLANKET. Meet AASHTO M 80, Class A. Meet the following gradation:

AASHTO M 43, size No. 467.

703-2.09 SUBBASE. Hard, durable particles or fragments of stone or gravel. Do not use materials that break up when alternately frozen and thawed or wetted and dried. Do not include muck, frozen material, roots, sod, or other deleterious matter. Meet the following requirements:

L.A. Wear,% AASHTO T 96 50 max.

Liquid Limit WAQTC FOP for AASHTO T 89 25 max.

Plasticity Index WAQTC FOP for AASHTO T 90 6 max.

Degradation ATM 313 40 min.

Meet the grading requirements of Table 703-6 (WAQTC FOP for AASHTO T 27/T 11).

Grading C and Grading D: Crushed aggregate with at least 50% by weight of the particles retained on the No. 4 sieve having at least one fractured face as tested by WAQTC FOP for

AASHTO TP 61.

TABLE 703-6

REQUIREMENTS FOR GRADING FOR SUBBASE

Percent Passing by Weight

GRADING SIEVE A B C D E

4 in. 100 -- -- -- -- 2 in. 85-100 100 -- -- -- 1 in. -- -- 100 -- --

3/4 in. -- -- -- 100 -- No. 4 20-55 20-55 40-75 45-80 -- No. 16 -- -- 20-43 23-50 --

No. 200 * 10 Max. 0-6 4-10 4-12 0-6

* Gradation shall be determined on that portion passing the 3-inch screen.

347 ALASKA 2004

703-2.10 POROUS BACKFILL MATERIAL. Gravel consisting of crushed or naturally occurring granular material containing not more than 1% clay lumps or other readily decomposed material (AASHTO T 112). Meet the grading requirements of Table 703-7 (WAQTC FOP for AASHTO T 27/T 11).

TABLE 703-7

REQUIREMENTS FOR GRADING FOR POROUS BACKFILL MATERIAL

SIEVE PERCENT PASSING BY WEIGHT

3 in. 100 1 in. 0-10

No. 200 0-5

703-2.11 GABION BACKFILL. Stone and gravel, uniformly graded from 4 to 12 inches in least dimension and having no more than 60% wear (AASHTO T 96).

703-2.12 SAND BLANKET. Sand containing no muck, frozen material, roots, sod or other deleterious matter and with a plasticity index not greater than 6 as determined by WAQTC FOPs for AASHTO T 89 and T 90. Meet the grading requirements of Table 703-8 as determined by WAQTC FOP for AASHTO T 27/T 11:

TABLE 703-8

REQUIREMENTS FOR GRADING FOR SAND BLANKET MATERIAL

SIEVE PERCENT PASSING BY WEIGHT

3/8 in. 100 No. 4 95-100

No. 200 0-6

SECTION 704

MASONRY UNITS

704-2.01 CLAY OR SHALE BRICK. Meet one of the following specifications:

Sewer Brick AASHTO M 91, Grade SM or SS Building Brick AASHTO M 114, Grade MW

704-2.02 CONCRETE BRICK. Meet ASTM C 55, Grade N.

704-2.03 CONCRETE MASONRY BLOCK. Meet ASTM C 90. Use rectangular or segmented block, When shown on the Plans, shape ends to provide interlock at vertical joints. Meet the dimensions and tolerances shown on the Plans.