Standard Practice for Installation of Articulating Concrete Block (ACB) Revetment Systems

SIGNIFICANCE AND USE
This standard is intended for use by designers and contractors to assist in understanding the importance of proper installation of articulating concrete block revetment systems in order to achieve suitable hydraulic performance and maintain stability against the erosive force of flowing water.
An articulating concrete block system is comprised of a matrix of individual concrete blocks placed together to form an erosion-resistant overlay with specific hydraulic performance characteristics. The system includes a geotextile underlay compatible with the subsoil that allows hydraulic infiltration and exfiltration to occur while providing particle retention. The blocks within the matrix shall be dense and durable and the matrix shall be flexible and porous.
Articulating concrete block systems are used to provide erosion protection to underlying soil materials from the forces of flowing water. The term “articulating,” as used in this standard, implies the ability of individual blocks of the system to conform to changes in the subgrade while remaining interconnected by virtue of block interlock and/or additional system components such as cables, ropes, geotextiles, or geogrids.
The definition of articulating concrete block systems does not distinguish between interlocking and non-interlocking block geometries, between cable-tied and non-cable-tied systems, between vegetated and non-vegetated systems or between methods of manufacturing or placement. Furthermore, the definition does not restrict or limit the block size, shape, strength, or longevity; however, guidelines and recommendations regarding these factors are incorporated into this standard. This standard does not specify size restrictions for individual block units. Block systems are available in either open-cell or closed-cell varieties.
The installation of articulated concrete block systems shall be performed so as to maintain intimate contact between the blocks, the geotextile filter and the subgrade that ...
SCOPE
1.1 The purpose of this standard is to provide recommended guidelines for the proper installation of articulating concrete block (ACB) revetment systems.
1.2 This practice offers a set of instructions for performing one or more specific operations. This document cannot replace education or experience and should be used in conjunction with professional judgment. Not all aspects of this practice may be applicable in all circumstances. This ASTM standard is not intended to represent or replace standard of care by which adequacy of a given professional service must be judged, nor should this document be applied without considerations of a project's many unique aspects. The word “standard” in the title of this document means only that the document has been approved through the ASTM consensus process.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard may involve hazardous materials, operations, and equipment. 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 limitations prior to use.

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Historical
Publication Date
30-Apr-2010
Current Stage
Ref Project

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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
Designation: D6884 − 03(Reapproved 2010)
Standard Practice for
Installation of Articulating Concrete Block (ACB) Revetment
Systems
This standard is issued under the fixed designation D6884; 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 3. Terminology
1.1 The purpose of this standard is to provide recommended 3.1 Definitions:
guidelines for the proper installation of articulating concrete 3.1.1 articulating concrete block (ACB) revetment system,
block (ACB) revetment systems. n—a matrix of interconnected concrete block units for erosion
protection. Units are connected by geometric interlock, cables,
1.2 This practice offers a set of instructions for performing
ropes, geotextiles, geogrids, or a combination thereof, and
one or more specific operations. This document cannot replace
typically include a geotextile underlayment for subsoil reten-
educationorexperienceandshouldbeusedinconjunctionwith
tion.
professional judgment. Not all aspects of this practice may be
applicable in all circumstances. This ASTM standard is not
4. Summary of Practice
intended to represent or replace standard of care by which
4.1 The proper installation of articulated concrete block
adequacy of a given professional service must be judged, nor
revetment systems is essential to the adequate functioning and
should this document be applied without considerations of a
performance of the system during the design hydrologic event.
project’s many unique aspects.The word “standard” in the title
This standard provides guidelines for maximizing the corre-
of this document means only that the document has been
spondence between the design intent and the actual field-
approved through the ASTM consensus process.
finished conditions of the project.
1.3 The values stated in inch-pound units are to be regarded
4.2 This standard addresses the preparation of the subgrade,
as standard. The values given in parentheses are mathematical
geotextile placement, block system placement, backfilling and
conversions to SI units that are provided for information only
finishing, and inspection.
and are not considered standard.
5. Significance and Use
1.4 This standard may involve hazardous materials,
operations, and equipment. This standard does not purport to
5.1 This standard is intended for use by designers and
address all of the safety concerns, if any, associated with its contractors to assist in understanding the importance of proper
use. It is the responsibility of the user of this standard to
installation of articulating concrete block revetment systems in
establish appropriate safety and health practices and deter- order to achieve suitable hydraulic performance and maintain
mine the applicability of regulatory limitations prior to use.
stability against the erosive force of flowing water.
5.2 An articulating concrete block system is comprised of a
2. Referenced Documents
matrix of individual concrete blocks placed together to form an
2.1 ASTM Standards:
erosion-resistant overlay with specific hydraulic performance
C33 Specification for Concrete Aggregates
characteristics. The system includes a geotextile underlay
C698 Test Methods for Chemical, Mass Spectrometric, and
compatible with the subsoil that allows hydraulic infiltration
Spectrochemical Analysis of Nuclear-Grade Mixed Ox-
and exfiltration to occur while providing particle retention.The
ides ((U, Pu)O )
blocks within the matrix shall be dense and durable and the
matrix shall be flexible and porous.
This practice is under the jurisdiction of ASTM Committee D18 on Soil and
5.3 Articulating concrete block systems are used to provide
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 2003. Last previous edition approved in 2003 as D6884–03. DOI:
10.1520/D6884-03R10.
to conform to changes in the subgrade while remaining
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
interconnected by virtue of block 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
D6884 − 03 (2010)
5.4 The definition of articulating concrete block systems (150 mm) thick. Where such areas are above the allowable
does not distinguish between interlocking and non-interlocking grades, they shall be brought to grade by removing material or
block geometries, between cable-tied and non-cable-tied sys- reworking existing material and compacting. The subgrade
tems, between vegetated and non-vegetated systems or be- shall be raked, screeded, or rolled by hand or machine to
tween methods of manufacturing or placement. Furthermore, achieve a smooth compacted surface that is free of loose
the definition does not restrict or limit the block size, shape, material.
strength, or longevity; however, guidelines and recommenda-
6.2 Placement of Geotextile:
tions regarding these factors are incorporated into this stan-
6.2.1 Immediately prior to placing the geotextile and ACB
dard. This standard does not specify size restrictions for
system, the prepared subgrade shall be inspected. The geotex-
individual block units. Block systems are available in either
tile shall be placed directly on the prepared area, in intimate
open-cell or closed-cell varieties.
contact with the subgrade and free of folds or wrinkles. The
5.5 The installation of articulated concrete block systems geotextile shall be placed in such a manner that placement of
shall be performed so as to maintain intimate contact between the overlying materials will not excessively stretch or tear the
theblocks, the geotextilefilterandthesubgradethatthe system geotextile. After geotextile placement, the work area shall not
is intended to protect. bedisturbedsoastoresultinalossofintimatecontactbetween
the concrete block, the geotextile, and the subgrade. The
geotextile shall not be left exposed longer than the manufac-
6. Procedure
turer’s recommendation to minimize potential damage due to
6.1 Subgrade Preparation:
ultraviolet radiation.
6.1.1 Stable and compacted subgrade soil shall be prepared
6.2.2 The geotextile shall be placed so that upstream strips
to the lines, grades and cross sections shown on the contract
overlap downstream strips and so that upslope strips overlap
drawings.Termination trenches and transitions between slopes,
downslope strips. Overlaps shall be in the direction of flow
embankment crests, benches, berms and toes shall be com-
wherever possible. The longitudinal and transverse joints shall
pacted, shaped and uniformly graded to facilitate the develop-
beoverlappedatleast3ft(91cm)forbelow-waterinstallations
ment of intimate contact between the ACB system and the
and at least 1.5 ft (46 cm) for dry installations. If a sewn seam
underlying grade. Termination between the articulating con-
is to be used for the seaming of the geotextile, the thread to be
crete bl
...

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