1、Designation: D 6711 01Standard Practice forSpecifying Rock to Fill Gabions, Revet Mattresses, andGabion Mattresses1This standard is issued under the fixed designation D 6711; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year
2、 of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope1.1 This practice covers the sizes and quality of rock to fillgabions and mattresses. The term mattress as used in th
3、isstandard shall include the terminology of gabion mattressesand revet mattresses used in Specifications A 974 and A 975.1.2 This practice does not cover the sizes and quality of rockfor other erosion control uses such as riprap or drainfall.1.3 This practice does not cover the material properties o
4、rconstruction of gabions or mattresses.1.4 The values in this practice are in English units and are tobe regarded as the standard. Si units are given.1.5 This practice offers a set of instructions for performingone or more specific operations. This document cannot replaceprofessional judgement. Not
5、all aspects of this practice may beapplicable in all circumstances. This ASTM standard is notintended to represent or replace the standrd of care by whichthe adequacy of a given professional service must be judged,nor should this document be applied without consideration ofa projects many unique asp
6、ects. The word “Standard” in thetitle of this document means only that the document has beenapproved through the ASTM consensus process.1.6 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 es
7、tablish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:A 974 Specification for Welded Wire Fabric Gabions andGabion Mattresses (Metallic-Coated or Poly Vinyl Chlo-ride (PVC) Coated)2A 975 Spec
8、ification for Double-Twisted Hexagonal MeshGAbions and Revet Mattresses (Metallic-Coated SteelWire or Metallic-Coated Steel Wire with Poly VinylChloride (PVC Coating)2D 4992 Practice for Evaluation of Rock to be Used forErosion Control3D 5519 Test Method for Particle Size Analysis of Naturaland Manm
9、ade Riprap Materials33. Terminology3.1 gabion, na wire mesh container of variable size andinterconnected with other similar containers. It is filled withrock to form flexible, permeable, monolithic structures.3.2 mattress, na wire mesh container uniformly parti-tioned into internal cells with relati
10、vely small height in relationto other dimensions. Mattresses have smaller mesh openingthan the mesh used for gabions.4. Summary of Practice4.1 The designer shall establish the suitable sizes, weight,and quality of rock for project use, and examine sources toensure that the required rock is available
11、.4.2 Rock shall be delivered to the work site in a manner tominimize its reduction in sizes (breakdown) during the han-dling of the rock, and then place and secured within theassembled and interconnected gabion or mattress.5. Significance and Use5.1 Gabions and mattresses, described in Specification
12、sA 974 and A 975, are placed on sites for stability and toprevent soil erosion. Their ability to function properly dependson their stability, which is partly dependent upon the rocksfilling them. Rock sizes should be chosed to prevent them fromfalling through the mesh of the gabions or mattresses. T
13、he rockalso has to withstand natural weathering processes during thelife of the project that would cause it to breakdown to sizessmaller than the wire mesh opening dimensions.6. Bulk Filling Materials6.1 Rock to fill gabions or mattresses may be any naturaldeposit of the required sizes, or may be cr
14、ushed rock producedby any suitable method and by the use of any device that yieldsthe required size limits chosen in 7.6.2 Rocks shall be hard, angular to round, durable, and ofsuch quality that they shall not disintegrate on exposure to1This guide is under the jurisdiction of ASTM Committee D18 on
15、Soil and Rockand is the direct responsibility of Subcommittee D18.25 on Erosion and SedimentControl Technology.Current edition approved August 10, 2001. Published November 2001.2Annual Book of ASTM Standards, Vol 01.06.3Annual Book of ASTM Standards, Vol 04.08.1Copyright ASTM International, 100 Barr
16、 Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.water or weathering during the life of the structure. Guidancefor selecting durable rock is given in Practice D 4992.7. Standard Sizes of Rock7.1 Guidance for measurement of rock sizes is given in TestMethod D 5519. Sizes of
17、 rock to fill gabions and mattresses arechosen on the basis of the mesh sizes, the structuress thick-ness, and the limits shown in 7.4. Fabrication of sieves todetermine particle size is given in Test Method D 5519.7.2 Within each range of sizes, the rock shall be largeenough to prevent individua pi
18、eces from passing through themesh openings stated in Specifications A 974 and A 975. Eachrange of sizes may allow for a variation of 5% oversize rock bynumber of particles, or 5% undersize rock by number ofparticles, or both.7.3 In all cases, the sizes of any oversize rock shall allow forthe placeme
19、nt of three or more layers of rock within eachgabion compartment, and two or more layers of rock withineach mattress compartment dependent upon the height of themattresses. In all cases, undersize and oversize rock shall beplaced within the interior of the gabion or mattress compart-ment and shall n
20、ot be placed on the exposed surface of thestructure. There shall be a maximum limit of 5% undersize or5% oversize rock, or both, within each gabion or mattresscompartment.7.4 The recommended dimensions of rock are given in thefollowing:.Structure Thickness Rock SizesType of Structure in (m) in (m)Ga
21、bion/Revet Mattress 6 (0.17) 35 76127Gabion/Revet Mattress 9 (0.23) 35 76127Gabion/Revet Mattress orGabion12 (0.30) 48 102203Gabion 18 (0.50) 48 1022037.5 Within the table, there shall be a full range of sizesbetween the upper and lower limits.8. Keywords8.1 erosion control; gabions; mattresses; roc
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25、tee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).D 67112
