1、C136/C136M-14differ by more than 0.3%based on the original dry sampleTABLE 2 Precisionmass,the results should not be used for acceptance purposes.Total Percentage ofStandardAcceptableDeviation(1s).Range of Two8.8 If the sample has previously been tested by Test MethodMaterial Passing%4Results(d2s),C
2、117,add the mass finer than the 75-um(No.200)sieve%4determined by that test method to the mass passing the 75-umCoarse Aggregate,日(No.200)sieve by dry sieving of the same sample in this testSingle-operator1002950.320.9precision95852.3method.0.8185801.343.8c802602.256.49.Calculation60201.323.720150.9
3、62.79.1 Calculate percentages passing,total percentages15101.002.8retained,or percentages in various size fractions to the nearest1050.7520.1 on the basis of the total mass of the initial dry sample.If520.530.27the same test sample was first tested by Test Method C117,Multilaboratory100950.351560inc
4、lude the mass of material finer than the 75-um(No.200)precision95851.3798580size by washing in the sieve analysis calculation;and use the19280602.828.0total dry sample mass prior to washing in Test Method C117 as60201.975.6the basis for calculating all the percentages.20151.60152101.489.1.1 When sam
5、ple increments are tested as provided in 7.6,1025122123total the masses of the portion of the increments retained on5221.040each sieve,and use these masses to calculate the percentages as0.45Fine Aggregate:in9.1.Single-operator100950.269.2 Calculate the fineness modulus,when required,byprecision9560
6、0.55602008e28adding the total percentages of material in the sample that is20150.54coarser than each of the following sieves(cumulative percent-15100.36100.371.1ages retained),and dividing the sum by 100:150-um(No.200.14100),300-um(No.50),600-m(No.30),1.18-mm(No.16),Multilaboratory1000.2362.36-mm(No
7、.8),4.75-mm(No.4),9.5-mm(%-in.),19.0-mmprecision95600.772.260201.414.0(34-in.),37.5-mm(1V2-in.),and larger,increasing in the ratio of202151.103.12to1.152100.732.11020.651.810.Report00.310.9These numbers represent,respectively.the(1s)and(d2s)limits described in10.1 Depending upon the form of the spec
8、ifications for usePractice C670.of the material under test,the report shall include the follow-The precision estimates are based on aggregates with nominal maximum size of19.0mm(%in)ing:10.1.1 Total percentage of material passing each sieve,or10.1.2 Total percentage of material retained on each siev
9、e,through 90).The values in the table are given for differentorranges of total percentage of aggregate passing a sieve.10.1.3 Percentage of material retained between consecutive11.1.1 The precision values for fine aggregate in Table 2 aresieves.based on nominal 500-g test samples.Revision of this te
10、st10.2 Report percentages to the nearest whole number,ex-method in 1994 permits the fine aggregate test sample size tocept if the percentage passing the 75-um(No.200)sieve is lessbe 300 g minimum.Analysis of results of testing of 300-g andthan 10%it shall be reported to the nearest 0.1%500-g test sa
11、mples from Aggregate Proficiency Test Samples99 and 100(Samples 99 and 100 were essentially identical)10.3 Report the fineness modulus,when required,to theproduced the precision values in Table 3,which indicate onlynearest 0.01.minor differences due to test sample size.11.Precision and BiasNorE 7-Th
12、e values for fine aggregate in Table 2 will be revised toreflect the 300-g test sample size when a sufficient number of Aggregate11.1 Precision-The estimates of precision for this testProficiency Tests have been conducted using that sample size to providemethod are listed in Table 2.The estimates ar
13、e based on thereliable data.results from the AASHTO Materials Reference Laboratory11.2 Bias-Since there is no accepted reference materialProficiency Sample Program,with testing conducted by Testsuitable for determining the bias in this test method,noMethod C136 and AASHTO No.T 27.The data are based
14、onstatement on bias is made.the analyses of the test results from 65 to 233 laboratories thattested 18 pairs of coarse aggregate proficiency test samples and12.Keywordstest results from 74 to 222 laboratories that tested 17 pairs of12.1 aggregate;coarse aggregate;fine aggregate;gradation;fine aggregate proficiency test samples(Samples No.21grading;sieve analysis;size analysisASTM
