ASTM D8260-20

Standard Specification for Hot-Applied Asphalt Aggregate-Filled Mastic

SCOPE
1.1 This specification covers hot-applied asphalt aggregate-filled mastics for repairing distresses in asphalt pavements and hydraulic concrete pavements. These distresses include, but are not limited to: depressions, wide cracks not suitable for crack sealing, pot holes, corner breaks and longitudinal joint distresses, and other repairs smaller than those requiring remove and replace procedures.  
1.2 The values stated in SI units are to be regarded as standard. No other units are included in this standard.  
1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.  
1.4 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 31-Dec-2019
• ICS: 93.080.20 - Road construction materials
• Technical Committee: D04 - Road and Paving Materials
• Drafting Committee: D04.33 - Formed In-Place Sealants for Joints and Cracks in Pavements

Relations

• Refers: ASTM D2794-93(2024) - Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)
• Effective Date: 15-Jan-2024
• Refers: ASTM E171/E171M-11(2020) - Standard Practice for Conditioning and Testing Flexible Barrier Packaging
• Effective Date: 01-May-2020
• Refers: ASTM D1985-13(2019) - Standard Practice for Preparing Concrete Blocks for Testing Sealants, for Joints and Cracks
• Effective Date: 15-Jun-2019
• Refers: ASTM D3666-16 - Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
• Effective Date: 01-Oct-2016
• Refers: ASTM E171/E171M-11(2015) - Standard Practice for Conditioning and Testing Flexible Barrier Packaging
• Effective Date: 01-Oct-2015
• Refers: ASTM D3666-13 - Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
• Effective Date: 01-Dec-2013
• Refers: ASTM D1985-13 - Standard Practice for Preparing Concrete Blocks for Testing Sealants, for Joints and Cracks
• Effective Date: 01-Jul-2013
• Refers: ASTM D3666-11 - Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
• Effective Date: 01-Dec-2011
• Refers: ASTM E171/E171M-11 - Standard Practice for Conditioning and Testing Flexible Barrier Packaging
• Effective Date: 15-Nov-2011
• Refers: ASTM D2794-93(2010) - Standard Test Method for Resistance of Organic Coatings to the Effects of Rapid Deformation (Impact)
• Effective Date: 01-Dec-2010
• Refers: ASTM D3666-09a - Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
• Effective Date: 01-Dec-2009
• Refers: ASTM D1985-03(2008) - Standard Practice for Preparing Concrete Blocks for Testing Sealants, for Joints and Cracks
• Effective Date: 01-Jul-2008
• Refers: ASTM D3666-07ae1 - Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
• Effective Date: 01-Aug-2007
• Refers: ASTM D3666-07a - Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
• Effective Date: 01-Aug-2007
• Refers: ASTM D3666-07e2 - Standard Specification for Minimum Requirements for Agencies Testing and Inspecting Road and Paving Materials
• Effective Date: 15-Jan-2007

Overview

ASTM D8260-20 specifies the requirements for hot-applied asphalt aggregate-filled mastics used in the repair of distresses in asphalt and hydraulic concrete pavements. This standard addresses repairs such as depressions, wide cracks, potholes, corner breaks, and longitudinal joint issues-distresses that do not warrant full remove-and-replace procedures. The main aim is to provide criteria for mastics that are resilient, stable, pourable, and capable of extending pavement life by restoring ride quality.

All specified requirements use SI units, and this international standard follows the World Trade Organization (WTO) Technical Barriers to Trade (TBT) principles for standard development.

Key Topics

• Product Definition: Hot-applied aggregate-filled mastics are voidless asphalt mixtures with aggregate sizes smaller than 12.7 mm, designed to be pourable at the application temperature.
• Intended Uses: The mastics are suitable for treating pavement distresses too large for crack sealants but smaller than major patching or full-depth repairs.
• Physical and Chemical Requirements: The standard covers resilience, stability at high temperatures, crack bridging ability, and resistance to rapid deformation, ensuring the material’s effectiveness and durability.
• Sampling and Conditioning: Guidelines for sampling at the plant, warehouse, or delivery site, and for conditioning specimens prior to testing, are specified to promote repeatability.
• Test Methods: Evaluations include mastic resilience, stability under load and temperature, crack bridging, and effects of deformation using standardized methods.
• Packaging and Labeling: Packaging must clearly identify the manufacturer, product, batch or lot number, specification type, and both application and maximum heating temperatures for quality assurance and traceability.
• Heating and Application Precautions: The document highlights best practices for uniformly heating mastics, using double-boiler kettles with thermostatic control and agitation to avoid material degradation.

Applications

• Pavement Maintenance: Widely used by public works departments and contractors for routine and emergency repairs of asphalt and concrete roadways.
• Localized Pavement Repairs: Ideal for treating potholes, wide non-sealable cracks, corner breaks, and smaller pavement distresses, effectively filling voids and restoring surface integrity.
• Airport and Industrial Surfaces: Suitable for repairing distressed concrete and asphalt on runways, taxiways, and heavy-duty industrial slabs.
• Extending Pavement Lifespan: Contributes to longer service life by preventing water infiltration and further deterioration, delivering cost-effective preservation of road assets.

Related Standards

For effective implementation and testing of hot-applied asphalt aggregate-filled mastics, consider these related ASTM standards:

• ASTM D3666: Minimum requirements for agencies testing and inspecting road and paving materials.
• ASTM D4989/D4989M: Test methods for apparent viscosity (flow) of roofing bitumens, applicable to assessing the pourable nature of mastics.
• ASTM E171/E171M: Practices for conditioning and testing flexible barrier packaging-referenced for laboratory conditioning protocols.
• ASTM C1305/C1305M: Method for evaluating crack-bridging ability of waterproofing membranes, modified for mastic testing.
• ASTM D1985: Guidelines for preparing concrete blocks for testing sealants in joints and cracks.
• ASTM D2794: Test method for the resistance of organic coatings to rapid deformation impact, adapted for mastic impact resistance testing.

ASTM D8260-20 is essential for anyone involved in pavement maintenance and repair, ensuring repairs are performed with materials that meet comprehensive performance standards and quality controls.

Keywords: hot-applied mastic, asphalt repairs, pavement maintenance, aggregate-filled mastic, crack bridging, ASTM D8260, pothole repair, joint distress, road materials standard.

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation:D8260 −20
Standard Specification for
Hot-Applied Asphalt Aggregate-Filled Mastic
This standard is issued under the fixed designation D8260; 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.
1. Scope D3666 Specification for Minimum Requirements for Agen-
cies Testing and Inspecting Road and Paving Materials
1.1 This specification covers hot-applied asphalt aggregate-
D4989/D4989M Test Method forApparent Viscosity (Flow)
filled mastics for repairing distresses in asphalt pavements and
of Roofing Bitumens Using the Parallel Plate Plastometer
hydraulicconcretepavements.Thesedistressesinclude,butare
E171/E171M Practice for Conditioning and Testing Flexible
not limited to: depressions, wide cracks not suitable for crack
Barrier Packaging
sealing, pot holes, corner breaks and longitudinal joint
distresses, and other repairs smaller than those requiring
3. Terminology
remove and replace procedures.
3.1 Definitions of Terms Specific to This Standard:
1.2 The values stated in SI units are to be regarded as
3.1.1 aggregate-filled mastic, n—voidless asphalt mix with
standard. No other units are included in this standard.
an aggregate size smaller than 12.7 mm and pourable at
1.3 The text of this standard references notes and footnotes
application temperature under the force of gravity.
which provide explanatory material. These notes and footnotes
4. Significance and Use
(excluding those in tables and figures) shall not be considered
as requirements of the standard.
4.1 This specification describes procedures for determining
specification conformance for hot-applied asphalt aggregate-
1.4 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the filled mastics.
responsibility of the user of this standard to establish appro-
NOTE 1—The quality of the results produced by this standard are
priate safety, health, and environmental practices and deter-
dependent on the competence of the personnel performing the procedure
mine the applicability of regulatory limitations prior to use. andthecapability,calibration,andthemaintenanceoftheequipmentused.
Agencies that meet the criteria of Specification D3666 are generally
1.5 This international standard was developed in accor-
considered capable of competent and objective testing, sampling,
dance with internationally recognized principles on standard-
inspection, etc. Users of this standard are cautioned that compliance with
ization established in the Decision on Principles for the
Specification D3666 alone does not completely ensure reliable results.
Development of International Standards, Guides and Recom-
Reliable results depend on many factors; following the suggestions of
mendations issued by the World Trade Organization Technical Specification D3666 or some similar acceptable guideline provides a
means of evaluating and controlling some of those factors.
Barriers to Trade (TBT) Committee.
5. Standard Conditions
2. Referenced Documents
5.1 The laboratory atmospheric conditions, hereinafter re-
2.1 ASTM Standards:
ferred to as standard conditions, shall be as detailed in Practice
C1305/C1305M Test Method for Crack Bridging Ability of
E171/E171M:23 6 2 °C and 50 6 10 % relative humidity.
Liquid-Applied Waterproofing Membrane
The material shall be conditioned 24 h at standard conditions
D1985 Practice for Preparing Concrete Blocks for Testing
before melting or heating.
Sealants, for Joints and Cracks
D2794 Test Method for Resistance of Organic Coatings to
6. General Requirements
the Effects of Rapid Deformation (Impact)
6.1 The hot-applied asphalt aggregate-filled mastic shall be
composed of a mixture of binder and aggregate and will form
This specification is under the jurisdiction of ASTM Committee D04 on Road
a resilient, stable, and adhesive compound capable of effec-
and Paving Materials and is the direct responsibility of Subcommittee D04.33 on
tively repairing or alleviating (or both) the distresses in
Formed In-Place Sealants for Joints and Cracks in Pavements.
pavements so that the ride quality is improved or the pavement
Current edition approved Jan. 1, 2020. Published January 2020. DOI: 10.1520/
D8260-20.
life is extended (or both). The material shall be capable of
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
being brought to the application temperature without
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
segregation, will pour easily from a gravity-fed field melter,
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. and is suitable for completely filling the area without inclusion
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D8260−20
of large air holes or discontinuities. The material shall remain recommended to set the temperature of the oven between the
relatively unchanged in application characteristics for at least application temperature and 10 °C above it. Stir as needed to
6 h at the maximum heating temperature in the field. ensure thorough heating.
8.2.2 Once the sample is within 18 °C of the maximum
7. Physical Requirements
heating temperature in the mixing vessel, it will be thoroughly
7.1 Maximum Heating Temperature—The maximum heat-
mixed by mechanical means while heating until all particles of
ing temperature is the highest temperature to which mastic can
aggregate are fully coated and aggregate is dispersed evenly
be heated and still conform to all the requirements specified
throughout to the maximum heating temperature. Do not heat
herein. For purposes of testing as specified hereinafter, the
with a direct flame. Material must reach maximum heating
application temperature shall be the same as the maximum
temperature within 1 h. Immediately upon reaching the maxi-
heating temperature. The maximum heating temperature shall
mum heating temperature, pour all specimens for testing
be set forth by the manufacturer, shall be shown on all
directly. Finish all required testing within a week.
containers, and shall be provided to the testing agency before
any laboratory tests are begun.
9. Test Methods
7.2 The material shall conform to the requirements pre-
9.1 Mastic Resilience:
scribed in Table 1 when heated to the maximum heating
9.1.1 Scope—This test method measures the ability of
temperature.
mastic to recover after being compressed to a fixed thickness.
Since a precision estimate for this standard has not been
8. Sampling and Heating
developed, the test method is to be used for research and
8.1 Sampling:
informational purposes only. Therefore, this standard should
8.1.1 Samples may be taken at the plant or warehouse prior
not be used for acceptance or rejection of a material for
to delivery or at the time of delivery, at the option of the
purchasing purposes.
purchaser. If sampling is done prior to shipment, the inspector
9.1.2 Significance and Use—To function properly, the mas-
representingthepurchasershallhavefreeaccesstothematerial
tic material must recover after compression and maintain
to be sampled. The inspector shall be afforded all reasonable
internal adhesion between the binder and the aggregate.
facilities for inspection and sampling which shall be conducted
9.1.3 Apparatus:
so as not to interfere unnecessarily with the operation of the
9.1.3.1 Load Frame, or hydraulic press capable of maintain-
works.
8.1.2 Samples shall consist of two of the manufacturer’s ing a crosshead speed of approximately 50 mm/min under
original sealed containers selected at random from the lot or maximum load, with a minimum travel distance of 25 mm.
batch of finished material.Abatch or lot shall be considered as
9.1.3.2 Platens, two. Steel, circular, or square, with attach-
all finished material that was manufactured simultaneously or
ment points suitable to the load frame or hydraulic press used
continuously as a unit between the time of compounding and
for the test. Circular 152 mm minimum diameter, 6.4 mm
the time of packaging or placing in shipping containers.
minimum thickness; or square 152 mm minimum width and
8.1.3 One entire container of aggregate and binder shall be
height, 6.4 mm minimum thickness.
placed in a mixing vessel or bucket used in any type of
9.1.3.3 Ring Molds, steel or brass, 66 6 0.2 mm inside
mechanical asphalt mixer; the mixing vessel shall be large
diameter, 2 mm minimum wall thickness, 25 6 0.4 mm in
enough to accommodate an entire container of aggregate and
height.
binder.
9.1.3.4 Spacers, two each. Steel, aluminum, or brass; height
8.2 Heating:
12.5 6 0.2 mm, width 12.5 6 0.2 mm, 25 to 68 mm in length.
8.2.1 The mixing vessel with sample shall be placed in a
9.1.3.5 Outside Calipers, accurate to at least 60.1 mm.
thermostatically controlled, forced-draft oven; the forced-draft
9.1.3.6 Laboratory Gas Burner.
oven shall be capable of maintaining the specified test tem-
9.1.3.7 Trimming Tool, straight edge, steel, 100 mm mini-
perature 61 °C and large enough to accommodate the mixing
mum blade width.
vessel.The oven shall be able to bring the material temperature
9.1.3.8 Release Agent—Silicone grease, glycerin/talc
to within 18 °C of the maximum heating temperature within
mixture, or other suitable non-petroleum material.
6 h of placement in the oven. Do not go over the maximum
heating temperature; otherwise discard the material. It is 9.1.3.9 Release Paper, suitable for release after test.
TABLE 1 Material Requirements
Type 1 Type 2 Type 3
Mastic Resilience 50 % minimum 50 % minimum 50 % minimum
Effects of Rapid Deformation 3 passing specimens no chipping, 3 passing specimens no chipping, 3 passing specimens no chipping,
cracking, or separation 8 N-m –7 °C cracking, or separation 8 N-m –18 °C cracking, or separation 8 N-m –29 °C
Crack Bridging 3 cycles –7 °C 3 cycles –18 °C 3 cycles –29 °C
Mastic Stability 40.0 mm maximum 70 °C 40.0 mm maximum 60 °C 40.0 mm maximum 50 °C
D8260−20
9.1.4 Conditioning—Allow samples taken according to the lab conditions before trimming. Trim the top of the specimen
sampling section above to acclimate to standard lab tempera- by heating the trimming tool with the burner and cutting flush
tures a minimum of 24 h before testing. Discard samples if the with the top of the mold. Prepare three specimens for each
conditioning time exceeds five days. sample.
9.1.5 Specimen Preparation—Coat the inside of the mold 9.2.2 Condition the specimens at test temperature for 20 6
4 h in conditioning chamber at test temperature 61 °C.
with release agent. Sample and heat the material according to
the sampling and heating sections above. Pour the material into
9.2.3 Remove the specimens from the freezer and impact
the mold and condition the specimen 2 h minimum at standard the material in accordance with Test Method D2794 within
lab conditions before trimming. Trim the top of the s
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