ASTM D7239-06(2011)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation:D7239 −06(Reapproved 2011)
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 2. Referenced Documents
2.1 ASTM Standards:
1.1 This is a material specification covering hybrid geosyn-
D123 Terminology Relating to Textiles
thetic paving mats typically used for, but not limited to, use in
D276 Test Methods for Identification of Fibers in Textiles
joint and localized (spot) pavement repairs; and paving mats
D4354 Practice for Sampling of Geosynthetics for Testing
intended for curb-to-curb coverage to provide a moisture
D4439 Terminology for Geosynthetics
barrierforthepavementstructureandretardreflectivecracking
D4759 Practice for Determining the Specification Confor-
in bituminous overlays. They are typically non-woven in
mance of Geosynthetics
construction. This is a material purchasing specification and
D4873 Guide for Identification, Storage, and Handling of
design review of use is recommended.
Geosynthetic Rolls and Samples
1.2 This is not a construction or design specification. This D5035 Test Method for Breaking Force and Elongation of
Textile Fabrics (Strip Method)
specification is based on hybrid geosynthetic paving mat
D5261 Test Method for Measuring Mass per Unit Area of
survivability from installation stresses. The values stated in SI
Geotextiles
units are to be regarded as the standard.
D6140 Test Method to Determine Asphalt Retention of
1.3 For purposes of determining conformance to this
Paving Fabrics Used in Asphalt Paving for Full-Width
specification, values for length or area shall be rounded to the
Applications
nearest 0.1 m or 0.1 m , respectively. Values for mass shall be
E29 Practice for Using Significant Digits in Test Data to
rounded to the nearest gram, and for force to the nearest
Determine Conformance with Specifications
Newton, and volume to the nearest 0.01 L, in accordance with
the rounding method in Practice E29.
3. Terminology
3.1 Definition of Terms—For definitions of terms relating to
1.4 The text of this standard references notes and footnotes
geotextiles, refer to Terminology D4439. For definitions of
that provide explanatory material. These notes and footnotes
other terms relating to textiles, refer to Terminology D123.
(excluding those in tables) shall not be considered as require-
ments of the standard.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 hybrid geosynthetic paving mat, n—a planar product
1.5 Specific safety recommendations are presented in
manufactured from primarily inorganic materials used as an
Section 6.
integral part of a man-made project, structure, or system. It is
1.6 This standard does not purport to address all of the
primarily intended for, but not limited to bituminous paving
safety concerns, if any, associated with its use. It is the
applications.
responsibility of the user of this standard to establish appro-
4. Classification
priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
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 paving mat of 136
g/m unit weight intended for curb-to-curb repaving of bitu-
minous or Portland cement concrete pavements with hot mix
asphaltic concrete meeting the requirements of Table 1.
This specification is under the jurisdiction of ASTM Committee D35 on
Geosynthetics and is the direct responsibility of Subcommittee D35.03 on Perme-
ability and Filtration. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved June 1, 2011. Published July 2011 Originally approved contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
2006. Last previous version approved 2006 as D7239–06. DOI: 10.1520/D7239- Standards volume information, refer to the standard’s Document Summary page on
06R11. the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D7239−06 (2011)
TABLE 1 Hybrid Geosynthetic Paving Mat Property
5.1.3 Amount in square meters or square yards required,
A
Requirements
5.1.4 Whether special sampling for inspection is required
Type Type Type Type
(see Section 13),
Property Test Method Units
B
I II III IV
5.1.5 Whether special packaging or marking is required (see
Breaking ASTM N/50 mm 200 3250 400 3250
C Section 17).
Strength D5035
Ultimate Elon- ASTM % # 5 # 10 # 10 # 10
C
gation D5035
6. Recommended Personal Protective Equipment
Mass per Unit ASTM D5261 g/m 125 300 300 450
Area
6.1 Respiratory Protection—A properly fitted NIOSH ap-
Asphalt Reten- ASTM D6140 L/m
D,ED,ED,ED,E
proved disposable N 95 series dust respirator such as the 3M
tion
Melting Point ASTM D276 °C 205 205 205 205 model 8210 (model 8271 in high humidity environments) or
A
equivalent should be used under the following conditions:
All numeric values represent MARV in the weaker principal direction.
B
Strength measurement minimum shall represent the direction of the reinforc-
6.1.1 Any dusty environment.
ing fibers in the Type II product.
6.1.2 When mechanically altering product (mechanical
C
Sample length: 250 mm. Sample width: 50 mm. Gauge length: 180 mm.
transfer, crushing, grinding, milling or other similar dust
Crosshead speed: 50 mm/min.
D
Asphalt required to saturate paving mat only. Asphalt retention must be
generatingprocesses).Userespiratoryprotectioninaccordance
provided in manufacturer certification (refer to Section 15). Value does not indicate
with your company’s respiratory protection program, local
the asphalt application rate required for construction.
E
regulations and OSHA regulations under 29 CFR 1910.134.
Asphalt retention property must meet the MARV value provided by the
manufacturer certification (refer to Section 15).
6.2 Skin Protection—Normal work clothing (long sleeved
shirts and long pants) is recommended. Use gloves. Skin
irritation is known to occur chiefly at the pressure points such
4.1.2 Type IIx—A uniaxial high-strength hybrid geosyn- as around the neck, wrists, waist, and between the fingers.
theticpavingmatconsistingofaTypeImatplusreinforcement
6.3 Eyes/Face Protective Equipment—Wear safety glasses
strands in the machine direction. The reinforcement strands
or goggles.
shall be attached onto the base paving mat, and the inorganic
fabric shall meet the physical properties requirements of Table
7. Materials and Manufacture
1. This material is intended for localized or spot repairs during
7.1 Fibers used in the manufacture of hybrid geosynthetic
the repaving of bituminous or Portland cement concrete
paving mats may be inorganic or a combination of inorganic
pavements with hot mix asphalt concrete.
and organic fibers, and shall not melt at temperatures below
4.1.3 Type IIy—A uniaxial high-strength hybrid geosyn-
205°C (400°F). Any threads used in joining paving mats by
theticpavingmatconsistingofaTypeImatplusreinforcement
sewing or knitting shall consist of long-chain synthetic poly-
strands in the cross direction. The reinforcement strands shall
mers, and shall also be heat stable to temperatures of 205°C
be attached onto the base paving mat, and the inorganic fabric
(400°F). They shall be formed into a stable network such that
shallmeetthephysicalpropertiesrequirementsofTable1.This
the filaments or yarns retain their dimensional stability relative
material is intended for localized or spot repairs during the
to each other, including selvages.
repavingofbituminousorPortlandcementconcretepavements
with hot mix asphalt concrete.
8. Mechanical Properties
4.1.4 Type III—Amultidirectional high-strength hybrid geo-
synthetic paving mat consisting of a Type I mat plus reinforce-
8.1 All property values in these specifications represent
mentstrandsthatarerandomlyorientedonthepavingmat.The
minimum average roll value
...