469 ALASKA 2020 SECTION 703
703-2.01 FINE AGGREG ATE 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 : ATM 304 (Method A) 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 “Deleteri ous 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 AGGR EGATE 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 : ATM 304 (Method A) 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 F OR BASE AND SURFACE COURSE . Crushed stone or crushed
gravel, consisting of sound, tough, durable pebbles or rock fragments of uniform qual ity. Free from clay balls, vegetable matter, or other deleterious matters. Meet Table 703- 1: TABLE 703 -1 AGGREGATE QUALITY PR OPERTIES FOR BASE AN D SURFACE COURSE Meet Table 703- 2 aggregate gradation requirements, as determined by ATM 304: 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., 1 Face ATM 305 Liquid Limit --- 35, max. ATM 204 Plastic Index 6, max. 10, max. ATM 205 Sodium Sulfate Loss,% 9, max. (5 cycles) 9, max. (5 cycles) AASHTO T 104 470 ALASKA 20 20 TABLE 703 -2 AGGREGATE GRADATION FOR BASE AND SURFACE COURSE Percent Passing by Weight
703-2.04 AGGREGATE F OR HOT MIX ASPHALT . Process and crush aggr egate that is free
from clay balls, organic matter, other deleterious material, and not coated with dirt or other finely divided mineral matter. Aggregate used must consist of sound, tough, durable rock of uniform quality. Remove all natural fines passing a No. 4 sieve before crushing aggregates for Type IV mixes. Coarse Aggregate . Aggregate retained on the No. 4 Sieve. Meet Table 703- 3 requirements: TABLE 703 -3 COARSE AGGREGATE QUA LITY FOR HMA Fine Aggregate. Aggregate passing the No. 4 sieve. Fine aggregate shall meet the quality requirements of AASHTO M 29, including S1.1, Sulfate Soundness. 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 6-30 6-30 15-30 25-45 No. 200 0-6 0-6 8-15 8-20 Description Specification Type II, Class A Type I, Type II Class B, Type III Type IV Type V Type SP LA Wear, % max. AASHTO T 96 45 45 45 45 45 Degradation Value, min. ATM 313 30 30 30 30 30 Sodium Sulfate Loss % max. (5 cycles) AASHTO T 104 9 9 9 9 9 Fracture, % min. ATM 305 90, 2 face 80, 1 face 90, 2 face 98, 2 face 90, 2 face Flat-Elongated Pieces, % max. 1:5 ATM 306 8 8 8 8 8 Absorption, % max. ATM 308 2.0 2.0 2.0 2.0 2.0 Nordic Abrasion, % max. ATM 312 - - - 8.0 8.0 471 ALASKA 2020 Fine aggregate for Type II, Class A mix shall not contain more than 20 percent natural fines (blend sand and mineral filler) added to the crushed aggregate, and shall not exhibit rut depth larger than 6.0 mm, as determined by ATM 419. Fine aggregate for Type IV mixes:
1.do not blend back natural sand
2.shall be non- plastic as determined by ATM 205
3.shall have a minimum uncompacted void content (Fine Aggregate Angularity) determined by AASHTO T 304, Method A, of 45 percent TABLE 703 -4 BROAD BAND GRADATION S FOR HOT MIX ASPHAL T AGGREGATE Percent Passing by Weight Gradation Sieve Type I Type II Type III Type IV Type V Type SP 1 inch 100 - - - - - 3/4 inch 80-90 100 - - 100 100 1/2 inch 60-84 75-90 100 100 65-90 90-100 3/8 inch 48-78 60-84 80-90 80-95 55-80 74-90 No. 4 28-63 33-70 44-81 55-70 40-60 42-54 No. 8 14-55 19-56 26-70 35-50 ≤ 45 25-35 No. 16 9-44 10-44 16-59 20-40 ≤ 35 - No. 30 6-34 7-34 9-49 15-30 ≤ 25 - No. 50 5-24 5-24 6-36 10-24 ≤ 20 - No. 100 4-16 4-16 4-22 5-15 ≤ 12 - No. 200 4-7 4-7 4-7 4-7 4-7 2-10
703-2.05 AGGREGATE F OR 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 Table 703- 5. TABLE 703 -5 QUALITY PROPERTIES F OR COVER COAT AND SURFACE TREATMENT Cover Coat Material . Meet the gradation requirements of Table 703- 6, as determined by ATM 304. 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,% ATM 305 90, min. (single face) 472 ALASKA 20 20 TABLE 703 -6 AGGREGATE GRADATION FOR COVER COAT MATERIAL Percent Passing By Weight Surface Treatment Material . Meet the gradation requirements of Table 703- 7, as determined by ATM 304. TABLE 703 -7 AGGREGATE GRADATION FOR ASPHALT SURFACE TREATMENT
703-2.06 MINERAL FIL LER. Meet AASHTO M 17. Determine material grading using AASHTO T
37.
703-2.07 SELECTED M ATERIAL . 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 ot her deleterious matter and with a plasticity index not greater than 6 as tested by ATM 204 and ATM 205. Meet the following gradation as tested by ATM 304: Sieve Percent Passing by Weight No. 4 20-60% 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 ATM 204 and ATM 205. Meet the following gradation as tested by ATM 304: Sieve Percent Pass ing 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 prov isions of Subsections 203- 3.04 or 203- 3.05. TYPE 2 COVER TYPE 3 COVER AGGREGATE SIEVE 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 GRADING Percent Passing by Weight SIEVE 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 0-10 473 ALASKA 2020 703-2.08 FILTER BLAN KET. 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 br eak up when alternately frozen and thawed or wetted and dried. Do not include muck, frozen material, roots, sod, or other deleterious matter. Meet Table 703- 8. TABLE 703 -8 QUALITY PROPERTIES F OR SUBBASE Meet the grading requirements of Table 703- 9 as determined by ATM 304. Grading C and Grading D: Crushed aggregate with at least 50 percent by weight of the particles retained on the No. 4 sieve having at least one fractured face as tested by ATM 305. TABLE 703 -9 AGGREGATE GRADATION FOR SUBBASE Percent Passing by Weight SIEVE GRADING A B C D E 4 in. 100 -- -- -- -- 2 in. 85-100 100 -- -- -- 1 in. -- -- 100 -- -- 3/4 in. -- -- -- 100 -- No. 4 15-60 15-60 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.
703-2.10 POROUS BACK FILL MATERIAL . Gravel consisting of crus hed or naturally occurring
granular material containing not more than 1 percent clay lumps or other readily decomposed material (AASHTO T 112). Meet the grading requirements of Table 703- 10 as determined by ATM 304. TABLE 703 -10 AGGREGATE GRADATION FOR POR OUS BACKFILL MATERIA L SIEVE PERCENT PASSING BY WEIGHT GRADATION A GRADATION B 3 in. 100 -- 2 in. -- 100 1.5 in. -- 95-100 1 in. 0-10 -- 3/4 in. -- 0-20 3/8 in. -- 0-5 No. 200 0-5 0-2
703-2.11 GABION BACK FILL . Stone and gravel, uniformly graded from 4 to 12 inches in least
dimension and having no more than 60 percent wear (AASHTO T 96). L.A. Wear,% AASHTO T 96 50, max. Liquid Limit ATM 20 4 25, max. Plasticity Index ATM 205 6, max. Degradation Value ATM 313 40, min. 474 ALASKA 20 20 703-2.12 SAND BLANKE T. Sand containing no muck, frozen material, roots, sod or other deleterious matter and with a plasticity index not greater than 6 as determi ned by ATM 204 and ATM 205. Meet the grading requirements of Table 703 -11 as determined by ATM 304. TABLE 703 -11 SAND BLANKET MATERIA L GRADATION
703-2.13 STRUCTURAL FILL . Aggregate containing no muck, frozen material, roots, sod or
other deleterious matter and with a plasticity index not greater than 6 as determined by ATM 204 and ATM 205. Meet the grading requirements of Table 703- 12 as determined by ATM 304. TABLE 703 -12 AGGREGATE GRADATION FOR STRUCTURAL FILL SIEVE PERCENT PASSING BY WEIGHT 3 in. 100 3/4 in. 75-100 No. 4 15-60 No. 16 10-30 No. 200 0-6
703-2.14 AGGREGATE F OR ABRASIVE FINISH . Crushed silica sand, oven dried, and stored in
moisture- proof bags. Free from clay balls, vegetative matter, or other deleterious matter (AASHTO T 112). Not coated with dirt or other finely divided mineral matter. Meet the grading requirements of Table 703- 13 as determined by ATM 304. TABLE 703 -13 GRADATION FOR SAND FOR ABRASIVE FINIS H SIEVE PERCENT PASSING BY WEIGHT No. 12 100 No. 40 0-5
703-2.15 CRUSHED GLA SS. Up to 10 percent by weight crushed glass (cullet) smaller than 3/8-
inch may be uniformly blended with natural soil -aggregate material prior to project delivery and placement. Glass cullet must be free of soil, paper, plastic, metals, organic material and other deleterious and hazardous substances. No more than 2.0 percent debris should be present as determined by Section X3 of AASHTO M318. Eligible glass products from which glass cullet might be produced include: food and beverage container glass; plain ceramic or china dinnerware; or building window glass. Prohibited glass products include: automobile windshields or other glass from automobiles; light bulbs of any type; por celain products; laboratory glass; television, computer or other cathode ray monitor tubes. Provide documentation identifying the origin of the glass products and certifying the glass cullet:
1.Does not contain prohibited materials,
2.Meets debris content requirement. SIEVE PERCENT PASSING BY WEIGHT 3/8 in. 100 No. 4 95-100 No. 200 0-6 475 ALASKA 2020 Uniformly blend glass cullet and natural soil -aggregate and meet the gradation requirements of Table 703- 14. TABLE 703 -14 COMBINED AGGREGATE/G LASS CULLET GRADATIO N For the natural soil -aggregate used in the blend, meet quality requirements as shown in Table 703-1, Section 703- 2.07, or Section 703- 2.09 for the type specified.
703-2.16 RECYCLED AS PHALT PAVEMENT (R AP). RAP shall be free of contamination and
deleterious materials. RAP maximum particle size shall not exceed 1.5- in. For HMA, the combined gradation of all aggregates, virgin and recycled, shall meet the requirements of Table 703- 4 for the specified HMA Type. Type (Section) Section/Table Selected Material (203 -3.03) Section 703 -2.07 Aggreg ate Base Course (301) Table 703 -2 Subbase Table 703 -8 476 ALASKA 2020 SECTION 704 MASONRY UNITS
704-2.01 CLAY OR SHA LE BRICK. Meet one of the following specifications:
Sewer Brick ASTM C32, Grade SM or SS Building Brick ASTM C62, Grade MW
704-2.02 CONCRETE BRICK. Meet ASTM C1634.
704-2.03 CONCRETE MA SONRY BLOCK. Meet ASTM C90. 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.
Source: Alaska Standard Specifications for Highway Construction, 2020 Edition. Pages 497–503 of 584.