1、Designation:D7047151Standard Test Method forSwell Volume of Plantago Insularis(Ovata,Psyllium)1This standard is issued under the fixed designation D7047;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A numb
2、er in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1NOTEEditorially corrected referencing in 11.1 in August 2015.1.Scope1.1 Quantitative test method to determine the swell volumeof plantago insularis(Ovata
3、,Psyllium).1.2 The purpose of this test method is to provide a means ofevaluating the swell volume,millilitres per gram,of psylliumhydrophilic mucilloid.1.3 The values stated in SI units are to be regarded as thestandard.The values in parentheses are provided for informa-tion only.1.4 All observed a
4、nd calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026.1.4.1 For purposes of comparing,a measured or calculatedvalue(s)with specified limits,the measured or calculatedvalue(s)shall be rounded to the nearest decimal or significantdigits in
5、 the specified limits.1.4.2 The procedures used to specify how data are collected/recorded or calculated,in this standard are regarded as theindustry standard.In addition,they are representative of thesignificant digits that generally should be retained.The proce-dures used do not consider material
6、variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common practice toincrease or reduce significant digits of reported data to becommensurate with these considerations.It is beyond the scopeof this standard to consider significan
7、t digits used in analysismethods for engineering design.1.5 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 o
8、f regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and ContainedFluidsD1193 Specification for Reagent WaterD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineeri
9、ng Design and ConstructionD4753 Guide for Evaluating,Selecting,and Specifying Bal-ances and Standard Masses for Use in Soil,Rock,andConstruction Materials TestingD6026 Practice for Using Significant Digits in GeotechnicalDataE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE6
10、91 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method3.Terminology3.1 Definitions:3.1.1 For common definitions of technical terms in thisstandard,refer to Terminology D653.4.Summary of Test Method4.1 Psyllium substrate is saturated with simulated intestinalfl
11、uid and the swell volume recorded after 24 h.5.Significance and Use5.1 The meaning of the test is related to the manufacturingand end use of the material,to determine characteristics ofproducts.5.2 The volume of swell reflects the amount of hydrophilicmucilloid present in psyllium.5.3 A manufacturer
12、 of raw psyllium will base the grade ofpsyllium produced on multiple properties of which swellvolume is one.1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.25 on Erosion andSediment Control Technology.Current editi
13、on approved June 1,2015.Published July 2015.Originally approvedin 2004.Last previous edition approved in 2012 as D704712.DOI:10.1520/D7047-15.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume
14、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 5.4 The higher the grade of psyllium the higher the swellvolume,thus a greater percent of mucilloid present.For th
15、eerosion control industry,the higher the swell volume of thepsyllium the greater its bonding strength and relative perfor-mance.5.5 Erosion control contractors and those writing erosioncontrol specifications will use this test method to evaluate thegrade of psyllium being used as a hydraulically app
16、lied erosioncontrol product.The swell volume will help determine theapplication rate of psyllium needed to meet the erosion controlperformance criteria.6.Apparatus6.1 Electronic Balance,as defined in Guide D4753,with aminimum capacity of 100 g and minimum readability of 0.001g.6.2 Graduated 250 mL Cylinder,with stopper.6.3 1000 mL Flask.6.4 60 Minute Timer,graduated in one minute intervals.6.5 pH Meter,calibrated to manufacturers specifications.7.Reagents7.1 Reagent-grade chemicals shall be used