702 ASPHALT MATERIAL
Acceptance. Asphalt binders 702.01 and liquid asphalts 702.02, 702.03, and 702.04 may be acceptable for shipment to and
immediate use in construction projects. Acceptance is according to
Supplement 1032.
702.00 Application
Temperatures. Apply
asphalt materials, according to the temperature ranges specified in Table 702.00-1.
Type and Grade of Material |
Application Temperature Range °F
(°C) |
|
Spray |
Mix |
|
MC-30 |
50 to 120 (10 to 49) |
--- |
MC-70 |
75 to 150 (24 to 66) |
--- |
MC-250 |
100 to 225 (38 to 107) |
100 to 225 (38 to 107) |
MC-800 |
150 to 250 (66 to 121) |
150 to 225 (66 to 107) |
MC-3000 |
225 to 275 (107 to 135) |
200 to 250 (93 to 121) |
All Emulsions |
50 to 160 (10 to 71) |
50 to 140 (10 to 60) |
Asphalt Primer for Waterproofing |
50 to 80 (10 to 27) |
--- |
Asphalt for Waterproofing |
300 to 350 (149 to 177) |
--- |
CBAE 350, CBAE
350 SP |
100 to 150 (38 to 66) |
100 to 150 (38 to 66) |
CBAE 800, CBAE
800 SP |
125 to 175 (52 to 79) |
125 to 175 (52 to 79) |
Primer 20 |
60 to 120 (16 to 49) |
--- |
Primer 100 |
75 to 125 (24 to 52) |
--- |
Asphalt Binders |
350 (177) Max. |
325 (163) Max. |
Asphalt Binders Polymer modified with SB, SBR, SBS, or Elvaloy |
375 (190) Max |
350 (177) Max. |
General. According to AASHTO M 320-10 Table 1 except as follows.
PG Binders with the
suffix “M” (e.g., PG 70-22M, PG 76-22M) will meet the requirements of Table 702.01-1. When a PG 64-28 is made through modification ensure it meets the test requirements of Table 702.01-1.
An independent
laboratory will not be owned or operated, in whole or part, by the binder
supplier, Contractor, or affiliates of either.
Materials
and Manufacture. Replace the
requirements of AASHTO M 320-10 Table 1 Section 5 “Materials and
Manufacture” Section with the following:
5.1
Supply PG Binder from the refining of crude petroleum, or combination of
asphalt binders from the refining of crude petroleum, or asphalt binders and
suitable liquid from the refining of crude petroleum, and possible organic
modifiers for performance enhancement. Material from the crude refining
stream is considered neat. Liquid from crude refining may be used for
adjustments, but do not used liquid from crude refining for the purpose of
substitution of crude refined asphalt binder in a PG Binder. In the event
of a failure investigation where asphalt binders exhibit unusual properties a
supplier may be requested by the Laboratory to supply information about the
makeup of a PG Binder. Failure to cooperate will mean removal from
Supplement 1032
certification.
5.2
A modifier may be any organic material of suitable manufacture that is proven
compatible with asphalt binder (does not separate appreciably in routine
storage), and that is dissolved, dispersed or reacted in asphalt binder to
improve its performance. Performance enhancement is defined as a decrease
in the temperature susceptibility of the asphalt binder while maintaining or
improving desirable properties in a neat asphalt binder such as coatability, adhesiveness and cohesiveness. Limit
modifiers to no more than 6.0 percent by PG Binder weight.
5.3
The use of previously used materials in a PG Binder must be approved by the
Department. Since no standard test procedures exist for reprocessed
materials (and original tests were not developed with the use of such materials
in mind), appropriate test methods may be chosen by the Department for
review. Department approval does not relieve the binder supplier from
full responsibility for content and use of any previously used material in a PG
Binder nor guarantee suitable performance enhancement as defined above.
The detected presence in a PG Binder sample of any unapproved previously used
material will mean immediate removal from Supplement 1032 certification.
Limit approved reprocessed materials to 6.0 percent by PG Binder weight.
5.4
Ensure the PG Binder is homogeneous, free from water and deleterious materials,
and does not foam when heated to 350 ºF (175 ºC). Prove the asphalt
binder (before modification or after modification if liquid modifier used) is
fully compatible with a negative result by means of the Spot Test per AASHTO T 102 using standard naphtha
solvent. If standard naphtha shows a positive result, a retest
using reagent grade 35 percent Xylene/ 65 percent Heptane (volume) may be
used.
5.5
Ensure the PG Binder is at least 99.0
percent soluble as determined by ASTM D 5546 or D 2042. Ensure any
insoluble component is free of fibers or discrete particles more than 75 µm.
5.6
Ensure flash point is 500 ºF (260 ºC) minimum. Ensure mass loss on RTFO of the final PG Binder grade is 0.5 percent maximum.
5.7 Ensure that PG 64-22 has a Penetration (AASHTO T49
) of no more than 75.5.8
Direct Tension testing is not required, unless otherwise required in this
specification.
a. Pre-blended
Binder. Usea base binder of at least -22 grade or stiffer for 70-22M and
76-22M.
c. Without Direct Tension, graded with actual pass temperatures
e. ASTM D 6084, 10cm
@ 77 ºF (25 ºC), hold 5 min. before cutting, on RTFO
material
f. ASTM D 5801,
50cm/min @ 77 ºF (25 ºC)
j. ASTM D 113, @ 39 ºF (4 ºC), 1 cm/min
702.02 Cut-Back
Asphalt. Provide medium curing cut-back asphalt
according to AASHTO M 82.
Instead of viscosity on the residue, the penetration in note 2 (AASHTO M 82)
will govern.
702.03 Cut-Back Asphalt Emulsions. Prepare emulsions by compounding a suitable volatile solvent and
water with 702.01 asphalt to produce emulsions according to
Table 702.03-1.
702.04 Emulsified Asphalts. Provide
emulsified asphalts according to AASHTO M 140 or AASHTO M 208 and
specification limits will be producible for at least 30 days from project
delivery.
702.05 Asphalt Primer for Waterproofing. Provide asphalt primer for waterproofing according to ASTM D 41 Type
2.
Furnish materials according to the
Department’s Qualified Products List (QPL).
702.06 Asphalt for Waterproofing. Provide asphalt for waterproofing according to
ASTM D 312, Type
III.
Furnish materials according to the
Department’s Qualified Products List (QPL).
702.07 Asphalt Emulsion MWS. Prepare asphalt emulsion MWS from a base
material according to 702.01, except vary the penetration to meet the float
test and penetration specified below. Ensure that the emulsion coats the
aggregate readily, thoroughly, and uniformly. Ensure that the specified
characteristics do not change during transportation, normal storage and that
the emulsion is according to the following when tested according to AASHTO T 59 for at
least 30 days after application:
702.13 SBR Asphalt Emulsion. Provide material consisting of asphalt emulsion SS-1, SS-1h, CSS-1
or CSS-1h per 702.04 and
Supplement 1032, blended
with SBR emulsion per 702.14, to produce
a residual mixture of asphalt binder and SBR solids
having a composition of 97.0 ± 0.3 percent asphalt binder and 3.0 ± 0.3 percent
SBR solids by weight.
Furnish a certification to the Engineer and signed by the
contractor containing the following:
A. The weight of SBR emulsion blended with the asphalt emulsion.
B. The weight of asphalt
emulsion blended with the SBR emulsion.
C. The SBR
emulsion manufacturer certification per 702.14.
D. The percent of asphalt
binder in the asphalt emulsion (residue by distillation).
E. The percent of SBR solids in the SBR emulsion.
F. The percent of SBR solids in the mixture of asphalt binder residue and SBR solids.
G. Name of Certified asphalt
emulsion producer and asphalt emulsion.
X = pounds (kilograms) of SBR emulsion
A = percent SBR
solids in the SBR emulsion
B = percent of asphalt residue of the
asphalt emulsion
W = pounds (kilograms) of the asphalt
emulsion
702.14 SBR
Emulsion. Ensure the SBR
emulsion is a cold polymerized Styrene Butadiene synthetic rubber (SBR) in latex form specifically compounded for use in
asphalt binders and asphalt emulsions. Ensure the manufacturer of the SBR emulsion furnishes a written certification of the total
SBR solids content of the SBR
emulsion and actual test results showing compliance with both of the following
requirements:
B. Combination of 3.0 – 4.0
% SBR solids with 96.0 – 97.0 % PG 64-22 meeting 702.01 by weight:
Toughness
inch-pounds (N×m), Minimum
133 (15)
Tenacity,
inch-pounds (N×m), Minimum
80 (9)
702.16 Polymer Emulsified
Binder. Material will meet specification requirements
of the table below for at least 30 days after application
Table 702.16 Polymer Emulsified Binder
Elastic
Recovery, 50 ºF (10º C), %, min AASHTO T 301,
(e),(,g) |
||
Toughness/Tenacity,
77 ºF (25º C), 50 cm/min, Nm ASTM D 5801 (f)
|
||
(c)
HFRS-2P, test within 20 days of project sampling.
A. Type I Crack Sealant.
Conform to 705.04
Denier; ASTM D 1577*......................................
3.0 to 6.0
Length...........................
0.25 ± 0.02 inch (6.35 ± 0.51mm)
Crimps; ASTM D 3937.............................................
None
Tensile str, min. ASTM D2256*.....
70,000 psi (483 Mpa)
Specific
gravity................................................ 1.32 to 1.40
Minimum melting
temperature................... 475 ºF (256 ºC)
Ignition
temperature......................... 1000 ºF (538 ºC) min.
*This data must be obtained prior to
cutting the fibers.
The fiber and fiber manufacturer must
be on the Qualified Products List.
Strength (at break) at 72 ºF (22 ºC) 350 psi (2.4 MPa)
min.
.... at 0 ºF (-18 ºC) ......................... 500 psi (3.5 MPa) min.
Elongation (at break) at 72 ºF
(22 ºC) 50 percent min.
.... at 0 ºF (-18 ºC) ..................................... 20
percent min.
Denier; ASTM D 1577*...........................................
15 ±3
Length,........................... 0.39 ± 0.08
inch (9.91 ± 2.0 mm)
Crimps; ASTM D 3937.............................................
None
Tensile strength, min, ASTM D 2256*
40,000 psi (276 MPa)
Specific
gravity................................................. 0.91 ± 0.04
Minimum melting
point............................. 320 ºF (160 ºC)
* This data must be
obtained prior to cutting the fibers.
The fiber and fiber manufacturer must
be on the Qualified Products List.
Strength (at break) at 72 ºF (22 ºC) 350 psi (2.4 MPa)
min.
.... at 0 ºF (-18 ºC).......................... 500 psi (3.5 MPa) min.
Elongation (at break).................................. at 72 ºF (22 ºC)
50 percent min.
.... at 0 ºF (-18 ºC) ..................................... 20
percent min.
Cone
penetration, 77 ºF (25 ºC)................................ 50-90
Flow, 140 ºF
(60 ºC)........................................ 1.0 cm max
Resilience,
77 ºF (25 ºC)............................... 25-60 percent
Ductility, 77
ºF (25 ºC)...................................... 40 cm min
Bond, 0 ºF
(-18 ºC), 100 percent ext. Pass ........... 5 cycles
Impact, 0 ºF
(-18 ºC)................................................... Pass
Compression
recovery.......................................... 0.40 min
Recommended
pour temperature............... 380 ºF (193 ºC)
Safe heating
temperature............................ 410 ºF (210 ºC)
Safe heating temperature............................
400 ºF (204 ºC)
Softening
point............................................ 190 ºF (88 ºC)
Viscosity,
400 ºF (225 0C).............................. 3000 cp min
Cone
penetration, 77 ºF (25 ºC)................................ 25-45
Flexibility*..................................................................
Pass
* 1 inch
(25mm) sample at -20 ºF (-30 ºC), 90 degree bend, 10 sec
Crack sealant
and crack sealant manufacturer must be on the Qualified Products List.