WYDOT 840.0
(Rev. 02-12)
LIQUID ASPHALT SAMPLING
Scope:
Submit sample(s) to the Materials Program according to the requirements
described below for all liquid asphalt (each different type or grade) supplied for
road construction or maintenance projects. Examples of the referenced Forms T121 and Forms E-221, E-223, and E-224 follow in this section.
Use:
Asphalt samples are required for many products for QC and QA testing. While
this procedure can be used for both types of samples, it must be followed for QA
samples. Refer to the applicable specification to determine the necessity, number,
and time frame of sampling asphalts.
Apparatus:
1.
Sample containers (clean)
a.
b.
2.
3.
4.
Heat resistant gloves - liquid temperatures may exceed 150° F
Clean rags for cleaning off excess liquid asphalt from outside surface of
container. Do not use water or any solvent (gasoline, diesel fuel, etc.) to
clean the outside of the sample container(s).
Sampling valves
a.
b.
c.
5.
For Cutback Asphalt (MC, RC, and SC) and performance graded
asphalt binder (PGAB), use metal cans, small mouth, screw cap
(American Can #10201/#18914 lid) or equivalent.
For Emulsified Asphalt, use plastic bottle/jar, screw cap (Nalgene
#2104-0032) or equivalent.
For tankers, see Figure 1 of this section, “Typical Sampling
Valve for Tanker”
For storage tanks, see Figure 2 of this section, “Typical
Sampling Valve for Storage Tank”
For asphalt supply line, see Figure 3 of this section,
“Typical Sampling Valve for Asphalt Supply Line”
Documentation - each sample requires the following documentation
a.
b.
c.
d.
Form T-121, Sample Transmittal Asphalt
Weight ticket/information (Cutback Asphalt and Emulsified
Asphalt) or Invoice (PGAB)
Certificate of Compliance (COC)
Bill of Lading (BOL) or shipping manifest
Note: BOL may include all appropriate information
6.
Tape
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WYDOT 840.0
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Reference
Documents:
Procedures:
WYDOT Construction Manual
WYDOT E-221
Pay Adjustment for Performance Graded Asphalt
Binder
WYDOT E-223
Pay Adjustment for Cutback Asphalt
WYDOT E-224
Pay Adjustment for Emulsified Asphalt
WYDOT T-121
Sample Transmittal Asphalt
WYDOT T-128
Construction Test Requirements
CUTBACK and EMULSIFIED ASPHALTS
1.
REFINERY Acceptance Samples
a.
b.
Sample - one quart
Point of Acceptance - supplier obtains acceptance samples for
each conveyance at the time of loading.
1.
Cutback Asphalt samples arrive with tanker at job site
Note:
2.
c.
d.
If no sample, obtain a field check sample (see
below) and add the note AIn Lieu of Refinery
Sample@ to the Remarks on the Form T-121.
Emulsified Asphalt samples go directly from the supplier to
the WYDOT Materials Program Asphalt Laboratory.
Frequency - one sample per conveyance (tanker or tanker/pup) per
type/grade
Identification
1.
2.
Identify cutback asphalt samples using designation from
Form T-128 (CSR-CBA) and number them in the order
they are obtained. Example: CSR-CBA #1, CSR-CBA #2,
CSR-CBA #3, etc.
Identify emulsified asphalt samples using Bill of Lading
(BOL) or manifest numbers.
Note: DO NOT use AControl Number@ from the BOL
3.
e.
Include required documentation(s) with each sample.
Other - record receipt, payment, etc., information on the
appropriate form(s) as described in the WYDOT Construction
Manual (i.e., E-223 and E-224, respectively).
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2.
FIELD Check Samples
a.
b.
c.
d.
Sample - one quart
Point of Acceptance - obtain sample from sampling valve on
tanker/pup or plant storage tank. Before taking sample, draw and
discard at least 1 gallon of material from the sampling valve.
Frequency - one sample per 200 tons
Identification
1.
2.
3.
4.
e.
Identify cutback asphalt samples using designation from
Form T-128 (FCS-CBA) and number them in the order
they are obtained. Example: FCS-CBA #1, FCS-CBA #2,
FCS-CBA #3, etc.
Identify emulsified asphalt samples using designation from
Form T-128 (FCS-EA) and number them in the order they
are obtained. Example: FCS-EA #1, FCS-EA #2, FCS-EA
#3, etc.
Include required documentation (see page 1 of this section)
with each sample.
Submit sample to the WYDOT Materials Program Asphalt
Laboratory.
Other - record receipt, payment, etc., information on appropriate
form(s) as described in the WYDOT Construction Manual (i.e., E223 and E-224, respectively).
PERFORMANCE GRADED ASPHALT BINDERS (PGAB)
***IMPORTANT***
Also include required documentation noted on page one of this section for all
tankers NOT SAMPLED.
1.
FIELD Acceptance Samples - DO NOT accept samples from truck drivers
of Performance Graded Asphalt Binders (PGAB).
a.
b.
c.
Sample - two quarts
Point of Acceptance - at the plant site, the contractor will obtain
the sample(s) from the sampling valve on the asphalt supply line
between the storage tank and mixer. Before taking the sample(s),
draw and discard at least 1 gallon of PGAB from the sampling
valve. Sample ONLY when the hot mix plant is in operation.
Submit sample to the WYDOT Materials Program Asphalt
Laboratory.
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WYDOT 840.0
(Rev. 02-12)
***IMPORTANT***
The WYDOT inspector will observe sampling.
If anything is
questionable, the WYDOT inspector will record it in the field diary.
c.
Frequency - one sample per 100 tons. This represents one sublot
for one lot.
Note:
d.
Identification
1.
2.
3.
e.
NO SAMPLE REQUIRED if project quantity is less than
100 tons (submit certifications)
Identify performance graded asphalt binder samples using
designation from Form T-128 (Q-PGAB) and number them
in the order they are obtained. Example: Q-PGAB #1, QPGAB #2, Q-PGAB #3, etc.
Mark both sample cans with the Lot and Sublot numbers
and securely tape them together. Example: Lot 1- Sublot 2
is L1-SL2, etc.
Include required documentation (see page 1 of this section)
with each sample and comments, if any, about sampling.
Only one set of documentation is required for each pair of
cans. Maintain proper chain-of-custody (i.e., the correct
pair of cans with the correct documentation) prior to
shipment to the WYDOT Materials Program Asphalt
Laboratory.
Other - record receipt, payment, etc., information on appropriate
form(s) as described in the WYDOT Construction Manual (i.e., E221).
Note: Wait until each lot is complete before submitting samples
and documentation to the WYDOT Materials Program
Asphalt Laboratory. A >standard= lot equals 5 sublots, but
may vary from three to seven sublots depending on
circumstances. If an >incomplete= lot exists at the end of
paving season and project continues the following year,
submit the lot >as is= for testing - do not wait until the next
season to complete it.
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Figure 1 - Typical Sampling Valve for Tanker
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Figure 2 - Typical Sampling Valve for Storage Tank
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Figure 3 - Typical Sampling Valve for Asphalt Supply Line
Typical sampling valve is Rod Seal Valve/Figure 8115 Sampling Valve with a Acontoured halfcoupling@ (for mounting to asphalt supply line pipeline) manufactured by Fetterolf Corporation,
P.O. Box 103, Skippack, PA 19474-0103, (610) 584-1500, or equivalent.
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