ASTM D2995-99(2009)
(Practice)Standard Practice for Estimating Application Rate of Bituminous Distributors
Standard Practice for Estimating Application Rate of Bituminous Distributors
SIGNIFICANCE AND USE
The amount of bituminous material applied to a pavement surface using a bituminous distributor can be estimated using the described procedure.
SCOPE
1.1 This practice covers the determination of transverse and longitudinal application rate of asphalt distributors in gallons per square yard (or litres per square metre).
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.3 The values given in inch-pound units are to be regarded as the standard. The SI values given in parentheses are for information purposes only.
General Information
Relations
Standards Content (Sample)
NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: D2995 − 99(Reapproved 2009)
Standard Practice for
Estimating Application Rate of Bituminous Distributors
This standard is issued under the fixed designation D2995; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope 4. Apparatus
1.1 This practice covers the determination of transverse and 4.1 Test Methods A and B:
longitudinal application rate of asphalt distributors in gallons 4.1.1 Balance, sensitive to 0.1 g.
per square yard (or litres per square metre). 4.1.2 Weighing Box or Balance Shield, to protect balance
from wind when the balance is in use at the project site (see
1.2 This standard does not purport to address all of the
Fig. 1).
safety concerns, if any, associated with its use. It is the
4.1.3 Balance Table and Work Table, for weighing.
responsibility of the user of this standard to establish appro-
priate safety and health practices and determine the applica-
4.2 Test Method B:
bility of regulatory limitations prior to use.
4.2.1 EllipticalContainers,measuringapproximately3.5in.
1.3 The values given in inch-pound units are to be regarded
(88.9 mm) along the short axis and 9 in. (228.6 mm) along the
as the standard. The SI values given in parentheses are for
long axis of the ellipse and 8 in. (203.2 mm) in height, capable
information purposes only.
of an internal volume of approximately 1 gal.
4.2.2 Rubber Bands, capable of a snug fit when stretched
2. Summary of Practice
around the elliptical containers.
2.1 Test Method A:
4.2.3 Stopwatch, capable of recording to the nearest 0.1 s.
2.1.1 Pre-weighed calibration pads are placed on the surface
5. Materials
of the roadway in front of the distributor to be calibrated. The
asphaltdistributortobecalibratedisdrivenoverthecalibration
5.1 Test Method A:
2 2
pads while spraying asphalt. The calibration pads are removed
5.1.1 Geotextile Pads, weighing a minimum of 8 oz/yd
from the roadway and reweighed. The weight of asphalt
and measuring 12 in. (304.8 mm) by 12 in. (304.8 mm).
applied to the pads is determined by subtraction and the rate of
5.1.2 Aluminized Duct Tape, measuring 2 in. (50.8 mm)
application is calculated.
wide and 6 in. (152.4 mm) long.
5.1.3 Butcher Paper #50, measuring 30 in. (762 mm) by
2.2 Test Method B:
950 ft, for temporary protection of geotextile pads during
2.2.1 Containers are placed under each nozzle of a bitumi-
calibration.
nous distributor and bituminous material is sprayed into the
containers for a known period of time. The volume of
5.2 Test Method B:
bituminous material sprayed after this period is calculated. The
5.2.1 Plastic Bags, capable of fitting inside the elliptical
transverse uniformity of bituminous material sprayed on the
cans but of sufficiently larger dimension to allow folding over
pavement is obtained from this calculation and the distribution
the edge of the elliptical containers once placed inside.
of bituminous material applied longitudinally on the pavement
is calculated as a function of the distributor velocity. 6. Procedure (Transverse Application Rate)
6.1 Test Method A:
3. Significance and Use
6.1.1 Select enough of the geotextile fabric pads so that
3.1 The amount of bituminous material applied to a pave-
when placed end-to-end on the roadway a continuous strip is
ment surface using a bituminous distributor can be estimated
created across the width of the roadway to be sprayed with
using the described procedure.
asphalt.
This practice is under the jurisdiction of ASTM Committee D04 on Road and
Paving Materials and is the direct responsibility of Subcommittee D04.24 on Non-woven, needle punched, heat fused on one side geotextiles by Phillips
Bituminous Surface Treatments. Fibers, Monsanto, and Amoco have been found to be suitable materials for this
CurrenteditionapprovedJune1,2009.PublishedJuly2009.Originallyapproved purpose.
in 1971. Last previous edition approved in 2004 as D2995 – 04. DOI: 10.1520/ Butcher paper from Baumann Paper Co., Baumann Rd., Lexington, KY has
D2995-99R09. been found to be suitable for this purpose.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D2995 − 99 (2009)
FIG. 2 Position of Calibration Pad Assemblies for Transverse
Rate Determination
pre-weighed can assembly. Start the stopwatch the instant the
FIG. 1 Weighing Box and Balance
asphalt begins to fill the can assembly.
6.2.5 Stop the flow of asphalt to the spraybar when the can
assembly is approximately ⁄4 full. Stop the stopwatch the
6.1.2 Create a loop with the duct tape with the adhesive side
instant the asphalt stops flowing into the can assembly.
facing out. Place two loops of duct tape on one edge of each of
6.2.6 Record the weight of each can assembly in the proper
the geotextile fabric pads.
space on the report form.
6.1.3 Obtain the weight of the pad and tape assembly to the
6.2.7 Record the time elapsed between the beginning and
nearest 0.1 g.
end of the flow of asphalt to the can assembly.
6.1.4 Place the pad assembly with the tape facing down on
the roadway so the taped edge is facing the distributor. Apply
7. Procedure (Longitudinal Application Rate)
pressure to the taped pad to secure it to the roadway. Continue
7.1 Test Method A:
this operation for the remaining pads for the entire width
7.1.1 Prepare the calibration pads and tape assemblies as
desired for calibration.
described in 6.1.2 thro
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.