1、Designation:D421922Standard Test Method forShort-Term Unconfined Compressive Strength Index ofChemically Grouted Soils1This standard is issued under the fixed designation D4219;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()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method covers the determination of the short-term unconfined compressive strength index of chemicallygrouted
3、 soils,using displacement-controlled application of testload.1.2 UnitsThe values stated in SI units are to be regardedas standard.The values given in parentheses are provided forinformation only and are not considered standard.Reporting oftest results in units other than SI shall not be regarded asn
4、onconformance with this standard.1.2.1 It is common practice in the engineering/constructionprofession to concurrently use pounds to represent both a unitof mass(lbm)and of force(lbf).This practice implicitlycombines two separate systems of units;the absolute and thegravitational systems.It is scien
5、tifically undesirable to com-bine the use of two separate sets of inch-pound units within asingle standard.As stated,this standard includes the gravita-tional system of inch-pound units and does not use/present theslug unit of mass.However,the use of balances and scalesrecording pounds of mass(lbm)o
6、r recording density in lbm/ft3shall not be regarded as nonconformance with this standard.1.3 All observed and calculated values shall conform to theguidelines for significant digits and rounding established inPractice D6026,unless superseded by this test method.1.3.1 For purposes of comparing a meas
7、ured or calculatedvalue(s)with specified limits,the measured or calculatedvalue(s)shall be rounded to the nearest decimal of significantdigits in the specified limit.1.3.2 The procedures used to specify how data are collected/recorded or calculated in the standard are regarded as theindustry standar
8、d.In addition,they are representative of thesignificant digits that generally should be retained.The proce-dures used do not consider material variation,purpose forobtaining the data,special purpose studies,or any consider-ations for the users objectives;and it is common practice toincrease or reduc
9、e significant digits of reported data to becommensurate with these considerations.It is beyond the scopeof this standard to consider significant digits used in analysismethods for engineering design.1.4 This standard does not purport to address all of thesafety concerns,if any,associated with its us
10、e.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accor-dance with internationally recognized principles o
11、n standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D653 Terminology Relating to Soil,Rock,and
12、ContainedFluidsD2166/D2166M Test Method for Unconfined CompressiveStrength of Cohesive SoilD3740 Practice for Minimum Requirements for AgenciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4320 Practice for Laboratory Preparation of ChemicallyGro
13、uted Soil Specimens for Obtaining Engineering Pa-rametersD6026 Practice for Using Significant Digits and Data Re-cords in Geotechnical DataD6913/D6913M Test Methods for Particle-Size Distribution(Gradation)of Soils Using Sieve Analysis3.Terminology3.1 Definitions:3.1.1 For definitions of common tech
14、nical terms used in thisstandard,refer to Terminology D653.1This method is under the jurisdiction of ASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.16 on Grouting.Current edition approved Oct.1,2022.Published October 2022.Originallyapproved in 1983.Last previ
15、ous edition approved in 2008 as D4219 08,whichwas withdrawn January 2017 and reinstated in October 2022.DOI:10.1520/D4219-22.2For 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
16、 to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organizat
