ASTM D7239-13(2018)

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Designation: D7239 − 13 D7239 − 13 (Reapproved 2018)
Standard Specification for
Hybrid Geosynthetic Paving Mat for Highway Applications
This standard is issued under the fixed designation D7239; 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
1.1 This is a material specification covering hybrid geosynthetic paving mats typically used for, but not limited to, use in joint
and localized (spot) pavement repairs; and paving mats intended for curb-to-curb coverage to provide a moisture barrier for the
pavement structure and retard reflective cracking in bituminous overlays. They are typically non-wovennonwoven in construction.
This is a material purchasing specification, and design review of use is recommended.
1.2 This is not a construction or design specification. This specification is based on hybrid geosynthetic paving mat survivability
from installation stresses.
1.3 For purposes of determining conformance to this specification, values for length or area shall be rounded to the nearest 0.1
m or 0.1 m , respectively. Values for mass shall be rounded to the nearest gram, and for force to the nearest Newton, and volume
to the nearest 0.01 L, in accordance with the rounding method in Practice E29.
1.4 The text of this standard references notes and footnotes that provide explanatory material. These notes and footnotes
(excluding those in tables) shall not be considered as requirements of the standard.
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 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.
1.7 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.
2. Referenced Documents
2.1 ASTM Standards:
D123 Terminology Relating to Textiles
D276 Test Methods for Identification of Fibers in Textiles
D4354 Practice for Sampling of Geosynthetics and Rolled Erosion Control Products (RECPs) for Testing
D4439 Terminology for Geosynthetics
D4759 Practice for Determining the Specification Conformance of Geosynthetics
D4873D4873/D4873M Guide for Identification, Storage, and Handling of Geosynthetic Rolls and Samples
D5035 Test Method for Breaking Force and Elongation of Textile Fabrics (Strip Method)
D5261 Test Method for Measuring Mass per Unit Area of Geotextiles
D6140 Test Method to Determine Asphalt Retention of Paving Fabrics Used in Asphalt Paving for Full-Width Applications
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
3. Terminology
3.1 Definition of Terms—For definitions of terms relating to geotextiles, refer to Terminology D4439. For definitions of other
terms relating to textiles, refer to Terminology D123.
This specification is under the jurisdiction of ASTM Committee D35 on Geosynthetics and is the direct responsibility of Subcommittee D35.06 on Geosynthetic
Specifications.
Current edition approved May 1, 2013June 1, 2018. Published June 2013.June 2018. Originally approved in 2006. Last previous edition approved in 20112013 as
D7239 – 06 (2011).D7239 – 13. DOI: 10.1520/D7239-13.10.1520/D7239-13R18.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7239 − 13 (2018)
3.2 Definitions of Terms Specific to This Standard:
3.2.1 hybrid geosynthetic paving mat, n—a planar product manufactured from primarily inorganic materials used as an integral
part of a man-mademanmade project, structure, or system. It is primarily intended for, but not limited to, bituminous paving
applications.
4. Classification
4.1 Type—Five types of hybrid geosynthetic paving mats are covered in this specification as follows:
4.1.1 Type I—A single layer non-woven single-layer, nonwoven paving mat of 136 136 g g/m⁄m unit weight, intended for
curb-to-curb repaving of bituminous or Portland cement concrete pavements with hot mix asphaltic concrete meeting the
requirements of Table 1.
4.1.2 Type IIx—A uniaxial, high-strength hybrid geosynthetic paving mat consisting of a Type I mat plus reinforcement strands
in the machine direction. The reinforcement strands shall be attached onto the base paving mat, and the inorganic fabric shall meet
the physical properties requirements of Table 1. This material is intended for localized or spot repairs during the repaving of
bituminous or Portland cement concrete pavements with hot mix asphalt concrete.
4.1.3 Type IIy—A uniaxial, high-strength hybrid geosynthetic paving mat consisting of a Type I mat plus reinforcement strands
in the cross direction. The reinforcement strands shall be attached onto the base paving mat, and the inorganic fabric shall meet
the physical properties requirements of Table 1. This material is intended for localized or spot repairs during the repaving of
bituminous or Portland cement concrete pavements with hot mix asphalt concrete.
4.1.4 Type III—A multidirectional, high-strength hybrid geosynthetic paving mat consisting of a Type I mat plus reinforcement
strands that are randomly oriented on the paving mat. The reinforcement shall be attached onto the base paving mat, and the
inorganic fabric shall meet the physical properties requirements of Table 1. This material is intended for localized or spot repairs
during the repaving of bituminous or Portland cement concrete pavements with hot mix asphalt concrete.
4.1.5 Type IV—A multidirectional, high-strength hybrid geosynthetic paving mat consisting of a Type I mat plus reinforcement
strands in both the machine and cross direction. The reinforcement strands shall be attached onto the base paving mat, and the
inorganic fabric shall meet the physical properties requirements of Table 1. This material is intended for localized or spot repairs
during the repaving of bituminous or Portland cement concrete pavements with hot mix asphalt concrete.
5. Ordering Information
5.1 Orders for material under this specification shall include the following information:
5.1.1 This specification designation and date of issue,
5.1.2 Type I, II, III, or IV paving mat,
5.1.3 Amount in square meters or square yards required,
5.1.4 Whether special sampling for inspection is required (see Section 12), and
5.1.5 Whether special packaging or marking is required (see Section 16).
TABLE 1 Hybrid Geosynthetic Paving Mat Property
A
Requirements
Type Type Type Type
Property Test Method Units
B
I II III IV
Breaking Strength ASTM N/50 mm 200 3250 400 3250
C,F
D5035
Ultimate Elongation ASTM % #5 #10 #10 #10
C,F
D5035
Mass per Unit Area ASTM g/m 125 300 300 450
D5261
Asphalt Retention ASTM L/m
D,E D,E D,E D,E
D6140
Melting Point ASTM °C 205 205 205 205
D276
A
All numeric values represent MARV in the weaker principal direction.
B
Strength measurement minimum shall represent the direction of the reinforcing
fibers in the Type II product.
C
Sample length: 250 mm. Sample width: 50 mm. Gauge length: 180 mm.
Crosshead speed: 50 mm/min.
D
Asphalt required to saturate paving mat only. Asphalt retention must be provided
in manufacturer certification (refer to Section 14). Value does not indicate the
asphalt application rate required for construction.
E
Asphalt retention property must meet t
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