ASTM_D_6684_-_04_2010.pdf

Designation:D668404(Reapproved 2010)Standard Specification forMaterials and Manufacture of Articulating Concrete Block(ACB)Revetment Systems1This standard is issued under the fixed designation D6684;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 The purpose of this Standard is to provide specificationsfor articulating concrete block(ACB)revetment system struc-tural components,material composition and physical proper-ties,manufacturing methods and testing requirements.1.2 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory requirements prior to use.2.Referenced Documents2.1 ASTM Standards:2C33 Specification for Concrete AggregatesC39/C39M Test Method for Compressive Strength of Cylin-drical Concrete SpecimensC42/C42M Test Method for Obtaining and Testing DrilledCores and Sawed Beams of ConcreteC67 Test Methods for Sampling and Testing Brick andStructural Clay TileC140 Test Methods for Sampling and Testing ConcreteMasonry Units and Related UnitsC150 Specification for Portland CementC207 Specification for Hydrated Lime for Masonry Pur-posesC331 Specification for Lightweight Aggregates for ConcreteMasonry UnitsC595 Specification for Blended Hydraulic CementsC618 Specification for Coal Fly Ash and Raw or CalcinedNatural Pozzolan for Use in ConcreteC666/C666M Test Method for Resistance of Concrete toRapid Freezing and ThawingC1262 Test Method for Evaluating the Freeze-Thaw Dura-bility of Dry-Cast Segmental Retaining Wall Units andRelated Concrete UnitsD4533 Test Method for Trapezoid Tearing Strength of Geo-textilesD4632 Test Method for Grab Breaking Load and Elongationof GeotextilesD4833 Test Method for Index Puncture Resistance ofGeomembranes and Related Products2.2 Other Documents:American Association of State Highway TransportationOfficials(AASHTO),1995,“Standard Specification forGeotextiles,”AASHTO Designation M 288,February.Koerner,R.M.,1998,“Designing With Geotextiles,”4thEdition,Prentice-Hall Publishers,Englewood Cliffs,N.J.p.761.3.Terminology3.1 Definitions:3.1.1 articulating concrete block(ACB)revetment system,na matrix of interconnected concrete block units sufficientfor erosion protection.Units are connected by geometricinterlock and/or cables,geotextiles,or geogrids,and typicallyinclude a geotextile underlay for subsoil retention.4.Significance and Use4.1 An articulating concrete block system is comprised of amatrix of individual concrete blocks placed together to form anerosion-resistant revetment with specific hydraulic perfor-mance characteristics.The system includes a filter layercompatible with the subsoil which allows infiltration andexfiltration to occur while providing particle retention.Thefilter layer may be comprised of a geotextile,properly gradedgranular media,or both.The blocks within the matrix shall bedense and durable,and the matrix shall be flexible and porous.4.2 Articulating concrete block systems are used to provideerosion protection to underlying soil materials from the forcesof flowing water.The term“articulating,”as used in thisStandard,implies the ability of individual blocks of the systemto conform to changes in subgrade while remaining intercon-nected by virtue of geometric interlock and/or additionalsystem components such as cables,ropes,geotextiles,orgeogrids.1This specification is under the jurisdiction of ASTM Committee D18 on Soiland Rock and is the direct responsibility of Subcommittee D18.25 on Erosion andSediment Control Technology.Current edition approved May 1,2010.Published September 2010.Originallyapproved in 2001.Last previous edition approved in 2004 as D668404.DOI:10.1520/D6684-04R10.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.3 The definition of articulating concrete block systemsdoes not distinguish between interlocking and non-interlockingblock geometries,between cable-tied and non-cable-tiedsystems,between vegetated and non-vegetated systems orbetween methods of manufacturing or placement.Furthermore,the definition does not restrict or limit the block size,shape,strength,or longevity;however,guidelines and recommenda-tions regarding these factors are incorporated into this Stan-dard.Block systems are available in either open-cell orclosed-cell configurations.5.Materials and Manufacture5.1 Materials Specificatio