Street Maintenance Materials

CITY OF ABILENE
STREET MAINTENANCE MATERIALS
MINIMUMSPECIFICATIONS
BID #CB-2651
It is the intent of these specifications to obtain bids from qualified vendors to provide street
maintenance material to include the City of Abilene, Texas.
The quantities specified are approximate. Asphalt products will be purchased on an "as needed
basis." Bids will be awarded on a per unit price basis. Unit prices shall be limited to two (2)
decimal places. The City of Abilene will reserve the option to group similar products for award.
Bidder shall guarantee price of material from October 1, 2026 through September 30, 2027.
Items marked "delivered" are to be quoted delivered unit prices. In the evaluation process the
City of Abilene will consider the cost of travel time and mileage to the bidder's plant in the award
of bid.
All material shall meet standard specifications as established by the Texas State Standard
specifications for Construction and Maintenance of Highways, Streets and Bridges adopted by the
Texas Department of Transportation, November 1, 2014 and all pertinent addenda thereto for Item
340 Hot Mix Asphaltic Concrete Pavement, Item 300 Asphalts, Oils & Emulsions, Item 330
Limestone Rock Asphalt Pavement (Class A) and Item 302 Aggregates for Surface Treatments.
The City of Abilene will reserve the option to extend this contract for two (2) additional one (1)
year terms with the agreement of the City and successful bidder. Extension year would be October
1st through September 30th of the succeeding year.
Items 6. & 7. A-1 Flex Base
Shall be Type A, Grade 1, as per Texas Department of Transportation Standard Specifications for
construction of Highways, Streets, Bridges, Item 247, Flexible Base.
Item 11. & 12. Type A Grade 6 Rock
SIEVE WEIGHT % RETAIN SPECS
12 0 0 0
3/8 2 .2 0-2
#4 415 36.4 5-40
#10 1128 99.1 70-100
#20 1133 99.6 99-100
Total Weight 1138
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Item 17. Polymer Modified Crack Sealant
Test Recommended Specifications
Cone Penetration (ASTM D5329) 20-40
Resilience (ASTM D5329) 30% min
Softening Point (ASTM D36) 210 degreesF (99 degreesC) min
Ductility 77 degreesF (25 degreesC) (ASTM D113) 30 cm min.
Flexibility (ASTM D3111 Modifiec) Pass at 30 degreesF (-1 degreesC)
Flow 140 degreesF (60 degreesC) (ASTM D5329) 3 mm max
Brookfield Viscosity, 400 degreesF (204 degreesC) (ASTM D2669) 100 Poise max.
Asphalt Compatibility (ASTM D5329) Pass
Bitumen Content (ASTM D4) 60% min
Tensile Adhesion (ASTM D4) 400% min
Safe Heating Temperature 390 degreesF (198.89 degreesC)
Recommended Pour Temperature 380 degreesF (193 degreesC)
Unit Weight 10lbs. Per gallon
Item 18. HPPM (High Performance Patching Material)
This specification shall govern for an asphaltic concrete mixture intended primarily as a cool to cold
weather stockpile patching mix for maintenance. It shall remain workable in the stockpile for six
months and have good adhesion to wet surfaces. The length of satisfactory stockpiling and the
lowest temperature at which it can be used will vary according to the type and grade of asphaltic
binder specified. It is primarily a crushed-stone asphaltic-concrete with asphalt additives.
The City of Abilene engineer will designate on the plans or requisition which of the following
combinations of asphalt and aggregate may be supplied, meeting all requirements stated below:
Asphalt
Aggregate SCM I SCM II
Item 334 X -
Gradation I X X
Gradation II X X
Graduation III - -
Materials Asphaltic Additives
One or more asphalt additives to prevent stripping of the asphalt from the aggregate in the
presence of water and promote bonding to damp or wet surfaces shall be incorporated into the
mixture. The additive(s) shall be added to the asphalt material at the point of origin or be metered
in at the mix plant to provide a uniform concentration of the agent(s). The type and amount of
additive(s) used will be approved by the Engineer in the design stage based on the resistance to
stripping, as described in "Properties of the Mixture," and desired bonding and workability
characteristics.
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Distillate
When an MC-800 is designated as the asphaltic material to be used, the Engineer may also direct
that distillate in amounts not to exceed five (5) percent by weight of the MC-800 be added in order
to extend stockpile life and improve cold weather workability. The distillate shall meet the
requirements for No. 1 or No. 2 diesel, ASTM D-975, with the exception that the maximum water
content shall not be greater than 0.2 percent.
The distillate shall be metered into the mix plant separately from the MC-800 or with the permission
of the Engineer, may be blended with the MC-800.
Aggregate
The aggregate shall meet the requirements for aggregate as specified in Standard Specification
"Item 334, Hot Mix-Cold Laid Asphaltic Concrete Pavement."
Mixture Design and Aggregate Gradation
One or more of the gradation types specified in Standard Specification "Item 334, Hot Mix-Cold
Laid Concrete Pavement," for optimum density mixtures or of the open mixture gradations shown
below, shall be designated by the Engineer on the plans or requisition.
For mixtures to be produced with "Item 334, Hot Mix-Cold Laid Concrete Pavement," gradation,
the mixture should be designed in accordance with Test Method "Tex-204-F, Design of Bituminous
Mixtures" and the asphalt content selected to result in laboratory density as follows:
Density (Percent)
Minimum Maximum Optimum
93.5 96.5 95.0
For mixtures to be produced with Gradation I, II, or III below, the Engineer shall select the asphalt
content within the range specified under Asphalt Content, above:
Percent Passing (by Weight)
Sieve Size Gradation I Gradation II Gradation III
3/4" 100
1/2" 100 100 70-90
3/8" 95-100 95-100 40-70
No. 4 90-100 17-40 10-30
No. 10 10-30 2-15 5-20
No. 40 0-25 0-10
No. 80 0-10 0-5
No. 200 0-5 0-3 0-4
AC %* 4.5-6.5 4.0-5.5
*Allowed asphalt content range
Resistance to Water Damage
The as-received mix shall be evaluated for resistance to water damage by soaking a 100-gram
representative sample of the total mixture in 200 milliliters (seven [7] fluid ounces) of distilled or
deionized water at 60 1 degreesC (140 2 degreesF) for 24 2 hours. The soaking test shall be accomplished
in a glass beaker of approximately 400-milliliters (fourteen [14] fluid ounces). Upon completion of
the 24-hour soaking period, the mixture shall be evaluated while submerged in the testing water.
The material shall show no visible evidence of stripping.
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Mixture Preparation
The mixture shall be plant mixed. All production equipment shall meet the requirements of
Standard Specification "Item 334, Hot Mix-Cold Laid Concrete Pavement." The asphaltic material
shall be heated in accordance with Article 300.3, Storage, Heating, and Application Temperatures.
The application temperature for SCM I and SCM II shall be 77 to 93 degreesC (170 to 200 degreesF) unless
otherwise specified by the material supplier. The application temperature for AES-300S and CMA
shall be as specified by the material supplier. The temperature of the bituminous mixture at the
point of discharge from the mixer and the temperature of the aggregate, when mixed with
bituminous material shall not exceed 93 degreesC (200 degreesF) unless otherwise approved by the Engineer.
The mixture shall be mixed until all of the aggregate is uniformly coated.
Item 19. CBS-1 (Cationic Base Stabilization - 1)
Specifications
Appearance Brown liquid
Odor No objectionable odor
Miscibility Test/Water No coagulation
Particle Charge Positive
Flash point 400F
Free cycle 3-cycle Pass
Min Max
Viscosity, S.F. 0 75
Residue, % min 35 45
Sara 3 ingredient level 0 0
Moisture wt. % - 62
Kinetic Viscosity, Goc, est 100 -
Soluble in Trichloroethylene - 8
Ash % wt. - 2
Specific gravity 0.98 1.1
Ph 3 7.5
Softening point on asphalt 150 190
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Item 20. CUSHION/BLOW SAND
The material must meet the following minimum requirements:
Property Requirement
Material Natural Sand
Soundness Loss (Tex-411-A) 25%
Plasticity Index (Tex-106-E) 6
3/8 in. (9.5mm) Sieve 100% Passing
No. 100 (150 m) Sieve 0-10% Passing
Item 21. MASONRY SAND
Masonry sand shall conform to ASTM C144 for aggregate used in masonry mortar. The material
shall be clean, well graded, and free from organic matter, clay lumps, debris, and other deleterious
materials. Sand shall be free-draining and capable of being compacted to provide uniform support
for pipe embedment and backfill.
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