ASTM D6684-04(2010)
(Specification)Standard Specification for Materials and Manufacture of Articulating Concrete Block (ACB) Revetment Systems
Standard Specification for Materials and Manufacture of Articulating Concrete Block (ACB) Revetment Systems
ABSTRACT
This specification covers the standard materials composition, physical properties, structural components, manufacturing methods, and testing requirements for articulating concrete block reventment systems for use in erosion protection to underlying soil materials from flowing water forces. Articulating concrete blocks may be produced at a block plant or onsite using either wet-cast or dry-cast production techniques. Reventment cable and fittings shall be designed in such a manner as to provide adequate strength and durability characteristics to facilitate safe lifting and placing of large mattresses. The materials shall consist of aggregates and cementitious materials which shall be Portland, blended, hydrated lime, or pozzolan cements and shall conform to the physical requirements such as compressive strength, water absorption, density or unit weight, and freeze-thaw durability. The system includes a geotextile filter which shall comply to grab strength, sewn seam strength, tear strength, puncture strength, and elongation requirements. Geotextile-subsoil compatibility assessment shall include functional requirements for permeability, particle retention, and resistance to clogging. Physical property requirements for permittivity, aperture size, percent open area, and UV stability shall be based on site-specific soil characteristics, site conditions, and construction techniques.
SCOPE
1.1 The purpose of this Standard is to provide specifications for articulating concrete block (ACB) revetment system structural components, material composition and physical properties, manufacturing methods and testing requirements.
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 requirements prior to use.
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Standards Content (Sample)
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Designation:D6684 −04 (Reapproved 2010)
Standard Specification for
Materials and Manufacture of Articulating Concrete Block
(ACB) Revetment Systems
This standard is issued under the fixed designation D6684; 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 C1262 Test Method for Evaluating the Freeze-Thaw Dura-
bility of Dry-Cast Segmental Retaining Wall Units and
1.1 The purpose of this Standard is to provide specifications
Related Concrete Units
for articulating concrete block (ACB) revetment system struc-
D4533 Test Method for Trapezoid Tearing Strength of Geo-
tural components, material composition and physical
textiles
properties, manufacturing methods and testing requirements.
D4632 Test Method for Grab Breaking Load and Elongation
1.2 This standard does not purport to address all of the
of Geotextiles
safety concerns, if any, associated with its use. It is the
D4833 Test Method for Index Puncture Resistance of
responsibility of the user of this standard to establish appro-
Geomembranes and Related Products
priate safety and health practices and determine the applica-
2.2 Other Documents:
bility of regulatory requirements prior to use.
American Association of State Highway Transportation
Officials (AASHTO), 1995, “Standard Specification for
2. Referenced Documents
Geotextiles,” AASHTO Designation M 288, February.
2.1 ASTM Standards:
Koerner, R.M., 1998, “Designing With Geotextiles,” 4th
C33 Specification for Concrete Aggregates
Edition, Prentice-Hall Publishers, Englewood Cliffs, N.J.
C39/C39M Test Method for Compressive Strength of Cylin-
p. 761.
drical Concrete Specimens
3. Terminology
C42/C42M Test Method for Obtaining and Testing Drilled
Cores and Sawed Beams of Concrete 3.1 Definitions:
C67 Test Methods for Sampling and Testing Brick and 3.1.1 articulating concrete block (ACB) revetment system,
Structural Clay Tile n—a matrix of interconnected concrete block units sufficient
C140 Test Methods for Sampling and Testing Concrete for erosion protection. Units are connected by geometric
Masonry Units and Related Units interlock and/or cables, geotextiles, or geogrids, and typically
C150 Specification for Portland Cement include a geotextile underlay for subsoil retention.
C207 Specification for Hydrated Lime for Masonry Pur-
4. Significance and Use
poses
4.1 An articulating concrete block system is comprised of a
C331 Specification for LightweightAggregates for Concrete
matrix of individual concrete blocks placed together to form an
Masonry Units
erosion-resistant revetment with specific hydraulic perfor-
C595 Specification for Blended Hydraulic Cements
mance characteristics. The system includes a filter layer
C618 Specification for Coal Fly Ash and Raw or Calcined
compatible with the subsoil which allows infiltration and
Natural Pozzolan for Use in Concrete
exfiltration to occur while providing particle retention. The
C666/C666M Test Method for Resistance of Concrete to
filter layer may be comprised of a geotextile, properly graded
Rapid Freezing and Thawing
granular media, or both. The blocks within the matrix shall be
dense and durable, and the matrix shall be flexible and porous.
This specification is under the jurisdiction of ASTM Committee D18 on Soil
4.2 Articulating concrete block systems are used to provide
and Rock and is the direct responsibility of Subcommittee D18.25 on Erosion and
erosion protection to underlying soil materials from the forces
Sediment Control Technology.
of flowing water. The term “articulating,” as used in this
Current edition approved May 1, 2010. Published September 2010. Originally
Standard, implies the ability of individual blocks of the system
approved in 2001. Last previous edition approved in 2004 as D6684–04. DOI:
10.1520/D6684-04R10.
to conform to changes in subgrade while remaining intercon-
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
nected by virtue of geometric interlock and/or additional
contact ASTM Customer service at service@astm.org. For Annual Book of ASTM
system components such as cables, ropes, geotextiles, or
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. geogrids.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
D6684−04 (2010)
4.3 The definition of articulating concrete block systems 5.5 Revetment Cable and Fittings:
doesnotdistinguishbetweeninterlockingandnon-interlocking 5.5.1 For cabled systems, the revetment cable or rope and
block geometries, between cable-tied and non- cable-tied fittings shall be designed to provide adequate strength and
systems, between vegetated and non-vegetated systems or durability characteristics to facilitate lifting and placing of
betweenmethodsofmanufacturingorplacement.Furthermore, large mattresses.
the definition does not restrict or limit the block size, shape, 5.5.2 Fittings such as sleeves, clamps and stops shall be as
strength, or longevity; however, guidelines and recommenda- required by the manufacturer. Selection of cable or rope and
tions regarding these factors are incorporated into this Stan- fittings shall be made in a manner that insures a safe design
dard. Block systems are available in either open-cell or factor for mats being lifted from one or both ends. Consider-
closed-cell configurations. ation shall be taken for the bending of the cables or ropes
around hooks or pins during lifting. Revetment cable or rope,
5. Materials and Manufacture
splice fittings, sleeves and stops shall be selected so that the
cable or rope and all connections result in a minimum
5.1 Materials Specifications: Cementitious Materials—
factor-of-safety of 5.0 with respect to lifting.
Materials shall conform to the following applicable ASTM
5.5.3 For those systems performance tested with, and that
standards:
rely on cables, ropes, or other non-concrete components to
Portland Cements C150
Blended Cements C595 maintain the block-to-block interconnection, the cables, ropes,
Hydrated Lime Types C207
and/or non-concrete components shall also meet the design life
Pozzolans C618
of the project.
5.2 Aggregates shall conform to the followingASTM speci-
5.6 Block Production:
fications,exceptthatgradingrequirementsshallnotnecessarily
5.6.1 Articulating concrete blocks may be produced at a
apply:
block plant or onsite using either wet-cast or dry-cast produc-
Normal Weight C33
tion techniques, provided that the composition and physical
Light Weight C331
characteristics of the furnished units meet the requirements of
5.3 Physical Properties—Atthetimeofdeliverytothework
5.1-5.3.
site, the units shall conform to the physical requirements
5.7 Matrix Assembly:
prescribed in Table 1.
5.3.1 In addition to Table 1, when freeze-thaw durability 5.7.1 Non-Cabled System—Non-cabled articulating con-
crete block systems are typically palletized, cured, and shipped
testing is required, such testing shall be performed in accor-
dance with Test Methods C67, C666/C666M,or C1262,atthe to the job site. Non-cabled systems may also be assembled on,
and/or glued to, a high-strength geotextile fabric which is used
direction of the Owner. The number of freeze-thaw cycles and
to carry the articulated block mattress.
the corresponding weight loss criterion for pass-fail determi-
5.7.2 Cabled System—Cabled articulating concrete block
nation shall be specified by the Owner along with the test
method. revetment systems can be assembled into mattresses, typically
up to 480 square feet (45 square meters). Whole mat produc-
5.3.2 Overall dimensions for width, height, and length shall
differ by not more than 6 1/8 in. (3.2 mm) from the specified tion can occur at the block plant or at the project. The
individual blocks are typically placed in their respective matrix
...
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