ASTM D3423-84(1998)e1

Standard Practice for Application of Emulsified Coal-Tar Pitch (Mineral Colloid Type)

SCOPE
1.1 This practice covers the application of mineral-colloid-stabilized, emulsified coal-tar pitch meeting the requirements of Specification D3320, as a weather protection and aliphatic-solvent-resistant sealer for use on bituminous pavements of airports, parking lots, and driveways.

General Information

• Status: Historical
• Publication Date: 09-Aug-1998
• Technical Committee: D08 - Roofing and Waterproofing
• Drafting Committee: D08.09 - Liquid Applied Coatings for Roofing and Asphaltic Concrete Pavement

Relations

• Replaced By: ASTM D3423-84(2003) - Standard Practice for Application of Emulsified Coal-Tar Pitch (Mineral Colloid Type)
• Effective Date: 10-Jul-2003

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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.
e1
Designation: D 3423 – 84 (Reapproved 1998)
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Practice for
Application of Emulsified Coal-Tar Pitch
(Mineral Colloid Type)
This standard is issued under the fixed designation D 3423; 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 (e) indicates an editorial change since the last revision or reapproval.
e NOTE—Editorially switched from English dominant to SI dominant.
1. Scope aggregate with a prime coat recommended by the sealer
manufacturer after all loose aggregate is removed. This prime
1.1 This practice covers the application of mineral-colloid-
coat is to dry thoroughly before proceeding.
stabilized, emulsified coal-tar pitch meeting the requirements
3.1.4 Immediately prior to application of the sealer, clean
of Specification D 3320, as a weather protection and aliphatic-
the surface of all loose dust, dirt, leaves, and other foreign
solvent-resistant sealer for use on bituminous pavements of
materials by sweeping, by flushing well with water, or a
airports, parking lots, and driveways.
combination of both.
1.2 The values stated in SI units are to be regarded as the
3.1.5 Remove oil or grease that has not penetrated the
standard. The values given in parentheses are for information
asphalt pavement by scrubbing with a detergent until a water-
only.
break-free surface is obtained after thorough flushing with
1.3 This standard does not purport to address all of the
clear water. If cleaning is unable to produce a true “water-
safety concerns, if any, associated with its use. It is the
break-free” surface, and the size of the unsatisfactory area is
responsibility of the user of this standard to establish appro-
too small to warrant replacement as described in 3.1.1, the
priate safety and health practices and determine the applica-
questionable area should be treated with a spot sealer as per the
bility of regulatory limitations prior to use.
pavement sealer manufacturer’s recommendation. Do not use
2. Referenced Documents
only solvents to remove oil or grease as the solvents may affect
adhesion of the sealer.
2.1 ASTM Standards:
3.1.6 Remove and patch pavement that has been penetrated
D 3320 Specification for Emulsified Coal-Tar Pitch (Min-
by oil and grease in accordance with the precautions described
eral Colloid Type)
in 3.1.1 if a cold patch is required.
3. Preparation of Surface
3.1.7 Treat old parking and traffic control lines with a prime
coat. If control lines are excessively built-up from multiple
3.1 Old Asphalt Surfaces (those which have weathered over
applications, abrade to the pavement surface before application
a change of seasons):
of the prime coat.
3.1.1 Repair and patch all pavement defects. If a solvent
3.2 New Asphalt Surfaces:
containing cold-applied material is used, this should be done a
3.2.1 Allow conventional hot-mix asphalt surfaces to age a
minimum of 90 days prior to the planned application of the
minimum of 30 days prior to the application of the sealer.
sealer to permit solvent escape before sealing.
3.2.2 Before application of sealer over a pavement con-
3.1.2 Thoroughly inspect the pavement surface for minor
structed by the use of solvent-containing cold-mix asphalt, age
cracks or other imperfections. Ignore hairline cracks. Open
1 the pavement a minimum of 90 days. A careful review and
minor cracks (less than 12.7 mm ( ⁄2 in.)) to a minimum depth
inspection of the pavement should be made by the supplier to
and width of 12.7 mm and fill with a crack filler approved by
ensure that all solvents have escaped prior to application of the
the manufacturer of the sealer. Wider cracks, along with soft or
sealer.
sunken spots, indicate that the pavement or the pavement base
3.2.3 Extend the curing period for new asphalt surfaces
should be repaired or replaced.
during cool or cold weather.
3.1.3 Treat old, badly oxidized asphalt pavement or asphalt
3.2.4 The surface should be clean and free from oil and
pavement that has lost binder by erosion leaving exposed
grease (see 3.1.4, 3.1.5, and 3.1.6).
This practice is under the jurisdiction of ASTM Committee D-8 on Roofing,
4. Preparation of Emulsion
Waterproofing, and Bituminous Materials and is the direct responsibility of
Subcommittee D08.09 on Bituminous Emulsions. 4.1 Stir the emulsion to a uniform consistency prior to use.
Current edition approved March 30, 1984. Publis
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