1、D4318-101DIMENSIONSLETTERB4CADAEFMM2114085020.10.20.50.10.50.1LETTERGHKAL4NMM1013601060DEG20MINIMUM0.051DEGESSENTIAL DIMENSIONSBACK AT LEAST 15 MM FROM TIPNOTE:DIMENSION A SHOULD BE 1.9-2.0 AND DIMENSION DSHOULD BE 8.0-8.1 WHEN NEW TO ALLOW FORADEQUATE SERVICE LIFEH6+E RADIUSJD|FDSECTIONKFIG.3 Groov
2、ing Tool(Optional Height-of-Drop Gauge Attached)5010construction,combine the various components in such propor-.05tions that the resultant sample represents the actual construc-tion case.8.1.2 Where data from these test methods are to be used forcorrelation with other laboratory or field test data,u
3、se the same25material as used for those tests where possible.8.2 Specimen-Obtain a representative portion from thetotal sample sufficient to provide 150 to 200 g of materialpassing the 425-um(No.40)sieve.Free flowing samplesDIMENSIONS IN MILLIMETRES(materials)may be reduced by the methods of quarter
4、ing orsplitting.Non-free flowing or cohesive materials shall beFIG.4 Height-of-Drop Gaugemixed thoroughly in a pan with a spatula or scoop and arepresentative portion scooped from the total mass by making8.Sampling and Specimenone or more sweeps with a scoop through the mixed mass.8.1 Samples may be
5、 taken from any location that satisfiestesting needs.However,Practices C702 and D75 and Guide9.Calibration of ApparatusD420 should be used as guides for selecting and preserving9.1 Inspection of Wear:samples from various types of sampling operations.Samples in9.1.1 Liquid Limit Device-Determine that
6、 the liquid limitwhich specimens will be prepared using the wet-preparationdevice is clean and in good working order.Check the followingmethod(10.1)must be kept at their as-sampled water contentspecific points.prior to preparation.9.1.1.1 Wear of Base-The spot on the base where the cup8.1.1 Where sa
7、mpling operations have preserved the naturalmakes contact should be worn no greater than 10 mm(in.)stratification of a sample,the various strata must be keptin diameter.If the wear spot is greater than this,the base canseparated and tests performed on the particular stratum ofbe machined to remove the worn spot provided the resurfacinginterest with as little contamination as possible from otherdoes not make the base thinner than specified in 6.1 and thestrata.Where a mixture of materials will be used inother dimensional relationships are maintained.
