1、Designation:D520208Standard Test Method forDetermining Triaxial Compression Creep Strength ofChemical Grouted Soils1This standard is issued under the fixed designation D5202;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of
2、 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 long-termstrength and deformation of a cylindrical specimen of either a(undi
3、sturbed)field sample or laboratory-fabricated chemicalgrouted soil when it is sheared undrained in compression undera constant sustained load.NOTE1The voids of chemical grouted soils are most often substan-tially filled with grout.Thus,pore pressures are unlikely to develop.Thistest method is not ap
4、plicable to partially grouted soils in which substantialpore pressures may develop.If pore pressures must be measured,reference is made to Test Method D4767 for equipment and procedures.1.2 This test method provides data useful in determiningstrength and deformation properties of chemical grouted so
5、ilssubjected to sustained loads.Mohr strength envelopes may alsobe determined.1.3 The determination of strength envelopes and the devel-opment of relationships to aid in interpreting and evaluatingtest results are left to the engineer or office requesting the test.1.4 The values stated in either SI
6、or inch-pound units shallbe regarded separately as standard.The values in each systemmay not be exact equivalents,therefore,each system must beused independently of the other,without combining values inany way.1.5 This standard does not purport to address all of thesafety concerns,if any,associated
7、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 limitations prior to use.1.6 This test method offers a set of instructions for perform-ing one or more specific operations.This docum
8、ent cannotreplace education or experience and should be used in con-junction with professional judgment.Not all aspects of thispractice may be applicable in all circumstances.This ASTMstandard is not intended to represent or replace the standard ofcare by which the adequacy of a given professional s
9、ervicemust be judged,nor should this document be applied withoutconsideration of a projects many unique aspects.The word“Standard”in the title of this document means only that thedocument has been approved through the ASTM consensusprocess.2.Referenced Documents2.1 ASTM Standards:2D422 Test Method f
10、or Particle-Size Analysis of SoilsD653 Terminology Relating to Soil,Rock,and ContainedFluidsD854 Test Methods for Specific Gravity of Soil Solids byWater PycnometerD2850 Test Method for Unconsolidated-Undrained TriaxialCompression Test on Cohesive SoilsD3740 Practice for Minimum Requirements for Age
11、nciesEngaged in Testing and/or Inspection of Soil and Rock asUsed in Engineering Design and ConstructionD4219 Test Method for Unconfined Compressive StrengthIndex of Chemical-Grouted SoilsD4320 Practice for Laboratory Preparation of ChemicallyGrouted Soil Specimens for Obtaining Design StrengthParam
12、etersD4767 Test Method for Consolidated Undrained TriaxialCompression Test for Cohesive SoilsD6026 Practice for Using Significant Digits in GeotechnicalData3.Terminology3.1 For common definitions of terms used in this testmethod,refer to Terminology D653.3.2 Definitions of Terms Specific to This Sta
13、ndard:3.2.1 failurein creep studies,the stress condition at exces-sive(15 to 20%)strain,or at continuing strain leading tofracture.1This test method is under the jurisdiction ofASTM Committee D18 on Soil andRock and is the direct responsibility of Subcommittee D18.15 on Stabilization WithAdmixtures.
14、Current edition approved Jan.1,2008.Published February 2008.Originallyapproved in 1991.Last previous edition approved in 2002 as D5202 02.DOI:10.1520/D5202-08.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTM
15、Standards volume information,refer 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 States1 4.Significance and Use4.1 Data f
16、rom these tests may be used for structural designpurposes.Adequate safety factors,based on engineering judg-ment must be determined by the user.NOTE2Sampling procedures for in-situ specimens have a majorinfluence on test results.Specimens carefully trimmed in the laboratoryfrom large block samples taken in the field have the least chance offracturing prior to testing.Sample preparation methods of laboratory-fabricated specimens also have a major influence on test results.Speci-mens should be fab