ALTERNATE PROCEDURES FOR SIEVING OF … PROCEDURES FOR SIEVING OF COARSE AND FINE GRADED SOILS AND AGGREGATES ... sieve analysis as described in …

ARIZ 248September 1, 1993(14 Pages)

ALTERNATE PROCEDURES FORSIEVING OF COARSE AND FINE GRADED

SOILS AND AGGREGATES

(An Arizona Method)

SCOPE

1. (a) This test method contains five alternate procedures for sieving anddetermining the sieve analysis of fine and coarse graded soils and aggregates.

(b) This test method must be used in conjunction with Arizona Test Method201. In general, the method for sample preparation, sieving, and calculation of thesieve analysis as described in Arizona Test Method 201 will be followed, with thechanges and additional information being outlined and described herein for eachalternate procedure shown below.

1) Alternate #1 (Section 2) - Fine screening of aggregate whichcontains a small amount of Plus No.4 (100% pass 3/8") material, e.g., fine aggregatefor concrete.

2) Alternate #2 (Section 3) - Utilizing a No. 8 screen in the coarsesieving, and a fine sieve analysis not being required.

3) Alternate #3 (Section 4) - Subjecting the entire sample to washing,and a minus No.4 split for fine screening is not required.

4) Alternate #4 (Section 5) - Subjecting the entire sample to washing,and a minus No.4 split for fine screening is required.

5) Alternate #5 (Section 6) - Washing of coarse aggregate (Plus No.4) to remove clinging particles and adjusting the fine sieve analysis.

ALTERNATE #1

2. Fine screening of aggregate which contains a small amount of Plus No. 4(100% pass 3/8") material, e.g., fine aggregate fbr concrete. An example of thisprocedure is shown in Figure 1.

ARIZ 248September 1, 1993Page 2

ARIZONA OEPARTMENT OF TRANSPORTAnoNSOIL AND AGGREGATE TABULATION

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(a) A representative minimum 500 gram sample is obtained and dried toconstant weight. Allow the sample to cool, and record the weight to the nearest gramas the "Unwashed Wt", (562 in the example).

(b) Subject the sample to either mechanical or hand washing.

(c) Dry the sample to constant weight and allow to cool. Record weight tothe nearest gram as "Washed Wt" and also as the fine sieve "Total Dry Weight", (547).

(d) Determine and record "Elutriation" by subtracting the 'Washed Wt" fromthe "Unwashed Wt", (562 - 547 = 15).

(e) Additional sieves (Plus No.4) as required are added to the nest of sievesused in the fine screening.

(f) The sample is subjected to screening and the weight retained on eachsieve and in the pan is recorded.

(g) The sum of the individual weights retained for each sieve is compared tothe weight of sample prior to sieving (Washed Wt. or fine sieve Total Dry Weight).Adjust or resieve as necessary.

(h) Determine the sieve analysis of the material. The factor for calculatingthe sieve analysis is determined by dividing 100 by the "Unwashed Wt",(100/562 =0.177936). The calculation of the percent passing each sieve is continuousthrough the entire sieve analysis.

ALTERNATE #2

3. Utilizing a No. 8 screen in the coarse sieving, and a fine sieve analysis notbeing required. An example is given in Figure 2.

(a) A representative sample is obtained and the weight recorded as the"Coarse Sieve Total", (14683 in the example).

(b) Subject the sample to coarse sieving using the No. 8 as the smallestsieve. If desired, the material may be screened using a No.4 as the smallest sieve,and the pass No.4 material further separated into No. 8 and pass No. 8 fractions.


ARIZONA OEPARTMENT OF TRANSPORTATIONSOli. AND AGGREGATE TABULAnON

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(c) The weight of material retained on each of the sieves NO.8 and larger,and the weight of pass No. 8 material is recorded on the laboratory sieve analysis card,modifying the card for the pass No. 8 material as shown in the example.

(d) The sum of the individual weights retained for each sieve is compared tothe weight of the sample prior to sieving (Coarse Sieve Total). Adjust or resieve asneeded.

(e) Determine the sieve analysis of the material. The coarse sieve factor isdetermined by dividing 100 by the "Coarse Sieve Total", (100/14683 = 0.006811). Thecalculation of the percent passing each sieve is continuous through the entire sieveanalysis.

ALTERNATE #3

4. Subjecting the entire sample to washing, and a·minus No. 4 split for finescreening is not required. An example of this procedure is given in Figure 3.

(a) A representative sample is be obtained, dried to constant weight, allowedto cool, and the weight recorded as the "Coarse Sieve Total" and also as the"Unwashed Weight", (1137 in the example).

(b) Subject the sample to hand washing.

(c) Dry the sample to constant weight and allow to cool. The weight of thesample is recorded as the "Washed Wt", (1118).

(d) Determine. "Elutriation" by subtracting the 'Washed Wt" from the"Unwashed Wt", (1137 -1118 = 19).

(e) Subject the sample to coarse screening and record the weight retainedon each sieve and in the pan, except the weight of pass No. 4 material is not recordedin the coarse sieve area, but rather as the fine sieve "Total Dry Weight", (468).

(f) Determine and record the weight of pass No. 4 for coarse sieve analysisby adding the "elutriation" and the fine sieve "Total Dry Weight", (468 + 19 = 487).

(g) The sum of the individual weights retained for each sieve is compared tothe weight of sample prior to sieving (Washed Wt.). Adjust or resieve as necessary.


ARIZONA DEPARTMENT OF TRANSPORTAnONSOIL AND AGGREGATE TABULATION

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ARIZ 201

FIGURE 3


(h) Sieve the pass No.4 material and record the weight retained for eachsieve and in the pan.

(i) The sum of the individual weights retained for each sieve is compared tothe weight of sample prior to sieving (fine sieve Total Dry Weight). Adjust or resieve asnecessary.

(j) Determine the sieve analysis of the material. The coarse sieve factor isdetermined by dividing 100 by the "Coarse Sieve Total", (100/1137 =0.087951). A finesieve factor is not determined. The calculation of the percent passing each sieve iscontinuous through the entire sieve analysis.

ALTERNATE #4

5. SUbjecting the entire sample to washing, and a minus No. 4 split for finescreening is required. An example of this procedure is given in Figure 4.

(a) A representative sample is obtained, dried to constant weight, allowed tocool, and the weight recorded as the "Coarse Sieve Total" and also as the "UnwashedWeight", (4893 in the example).

(b) Subject the sample to hand washing.

(c) Dry the sample to constant weight and allow to cool. The weight of thesample is recorded as the "Washed Wt", (4674).

(d) The elutriation of the total sample is determined by subtracting the'Washed Wt" from the "Unwashed Wt", (4893 - 4674 =219).

(e) The sample shall be subjected to coarse screening and the weightretained on each sieve and in the pan is recorded, except the weight of pass No. 4material is not recorded in the coarse sieve area, but rather as 'Wt. of - #4" (2521).

(f) The sum of the individual weights retained for each sieve is compared tothe weight of sample prior to sieving (Washed Wt.). Adjust or resieve as necessary.

(g) The passing No. 4 weight for coarse sieve analysis is the combination ofthe weight of pass NO.4 and the elutriation of the total sample, (2521 + 219 =2740).

(h) The weight of the passing No. 4 material split for fine sieving is recordedas the fine sieve ''Total Dry Weight", (665).


ARIZONA OEPARTMENT OF TRANSPORTATIONSOIL AND AGGREGATE TABULATION

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(i) The elutriation value for fine sieve analysis is determined as follows:

ElutriationforFine SieveAnalysis

Wt. of Passing NO.4Material Split for FineSieving, (Fine Sieve''Total Dry Weight"

=---------

[Wt. Of-#4][

Elutriation]x of

Total Sample

In the example in Figure 4:

Elutriationfor Fine Sieve = (665/2521) x 219 =58Analysis

(j) The "Dry Wt. of Pass #4 Split" is determined by adding the fine sievetotal dry weight and the calculated elutriation for fine sieve analysis, (665 + 58 =723).

(k) The pass No. 4 material is sieved and the weight retained for each sieveand in the pan is recorded.

(I) The sum of the individual weights retained for each sieve is compared tothe weight of sample prior to sieving (fine sieve Total Dry Weight). Adjust or resieve asnecessary.

(m) Determine-the sieve analysis of the material.

ALTERNATE #5

6. Washing of coarse aggregate (Plus No.4) to remove clinging particles andadjusting the fine sieve analysis. An example of this procedure is shown in Figures 5and 6.

(a) A representative sample shall be prepared, screened, and the sieveanalysis calculated as described in Arizona Test Method 201. (When this alternateprocedure is used as a referee method, the sample shall be dried to constant weightprior to sieving.)


ARIZONA OEPARTMENT OF TRANSPORTATIONSOIL AND AGGREGATE TABULATION

~~~~TYPE ~~~_~~ t.2.L.:LL.2.l.1~~ [£] IdJ LeI L:J L::Ll

~~ I 11.~:; I~onlmc::J:~SAMPlEOFROM LIFT NO. ~ STATION ~S

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Lab. No. 93 - 9999, I

DftmuaD!'IOII 01' PDC:mrr HIlmS BO. zoo 011 COARaB AGGJlElGA!'BAHD 'fO'rAL PDcmrr PASS JlO. 200 III SAULB

r-C99 -)) (99) /1/ 99 990/ c.Project No.

Unwashed Weiqht of Plus No.4'" _.;..,'1.;..,9&;;.....;..7_

Washed Weiqht of Plus No.4'" _.;..,r_9_~_I_

Calculate the "Percent Minus No. 200 on Coarse Aqqreqate" by thefollowinq, and record result to the nearest 0.01%:

x 100

r;;nwashed weiqht'l~f Plus No. 4 ~

( '19(/1 ) (lf9Y/)( t./9~7 )

r;;nwashed weiqht'l _ r;ashed weiqht'l~f Plus No. 4 ~ ~f Plus No. ~

..~

l~~~e::J200 on .. ------------------ x 100Coarse

Aqqreqate

Percent Minus No. 200 on Coarse Aqqreqate -

Calculate the "Total Percent Pass No. 200 in Sample" by thefollowinq, and record result to the nearest 0.1%:

[. -[::~J] ~pe~e~JTotal % Pass Minus No.Percent No. 200 x 200 onPass No. • froa + Coarse

200 in Pine Aqqreqatesample Sievinq

100

)JX(0,52.)

• ( /1. J ) +100

Total Percent Pass No. 200 in Suple .. lit,

FIGURE 6


(b) Either the entire amount, or a representative sample of approximately5000 grams, whichever is less, of the Plus No. 4 material from screening shall becombined, dried to constant weight, allowed to cool, and the weight recorded as the"Unwashed Weight of Plus No.4", (4967 in the example in Figure 6).

(c) Subject the sample to hand washing.

(d) Dry the sample to constant weight and allow to cool. Record the weightto at least the nearest gram as the "Washed Weight of Plus No.4", (4941 in theexample in Figure 6).

(e) Utilizing the equations shown in Figure 6, determine and record the"Percent Minus No. 200 on Coarse Aggregate" to the nearest 0.01 %, (0.52); and the"Total Percent Pass No. 200 in Sample" to the nearest 0.1 %, (11.6).

(f) Compare the percent Pass No. 200 from fine sieving with the ''TotalPercent Pass No. 200 in Sample". If the difference is less than or equal to 1.0, replacethe percent Pass No. 200 from fine sieving with the ''Total Percent Pass No. 200 inSample" and, if necessary, adjust the value for percent retained on the No. 200 sieve.(In the example in Figure 5, the 11.3 percent Pass No. 200 from fine sieving has beenreplaced with the 11.6 ''Total Percent Pass No. 200 in Sample", and the percentretained on the No. 200 sieve has been adjusted from 3 to 2.) If the difference isgreater than 1.0, another sample shall be obtained and the entire sample subjected towashing and the gradation determined as specified in Section 4 or 5.

REPORT

7. (a) The sieve analysis shall be reported as shown in Figures 1 through 5 forthe particular example which is applicable.

(b) When applicable, the determination of "Percent Minus No. 200 onCoarse Aggregate" and ''Total Percent Pass No. 200 in Sample" is reported as shownin the example given in Figure 6.

(c) A blank Soils and Aggregate Tabulation laboratory card is provided inFigure 7.

(d) A blank form for the determination of "Percent Minus No. 200 on CoarseAggregate" and ''Total Percent Pass No. 200 in Sample" is provided in Figure 8.


ARIZONA DEPARTMENT OF TRANSPORTATIONSOIL AND AGGREGATE TABULATION

REMARKS

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ARIZ 248September 1. 1993Page 14

DBTDXIIm,TIOIif OJ' PDCD'l' JaWS lifO. 200 Olif conslI AGGUGATIIAIifD TOTAL PDCDT PASS BO. 200 IB SJ\HPLII

Project. No. Lab. No.

Unwashed Weight. of Plus NO.4· __

Washed Weight. of Plus No.4· __

r;inwashed weight'l~f Plus No. 4 ~

r;inwashed weight'l _ r;ashed weight'l~f Plus No. 4 ~ ~f Plus No. ~

Calculate the "Percent Minus No. 200 on Coarse Aggregate" by thefollowing, and record result to the nearest. 0.01%:

~Mi:~~e::J

200 on ... ----------------------- x 100Coarse

Aggregate

(

(

) (

)

)

Percent. Minus No. 200 on Coarse Aggregat.e ...

Calculat.e the "'1'ot.al Percent. Pass No. 200 in Sample" by thefollowing, and record result. t.o the nearest. 0.1%:

TotalPercent.Pass No.

200 inSample

... (

% Pa••No. 200

... frOll +Fin.

Sieving

) +

100 - [pa:.lNo. ~

100

100

)

'1'ot.al Percent. Pa•• No. 200 in SaJIIlple ..

FIGURE 8

Documents

ALTERNATE PROCEDURES FOR SIEVING OF … PROCEDURES FOR SIEVING OF COARSE AND FINE GRADED SOILS AND AGGREGATES ... sieve analysis as described in …