PERMFILE63958

• Permit No: C1981021
• IBM Index Class Name: Permit File
• Doc Date: 12/11/2001
• Doc Name: AVF STUDY & ENGINEERING & HYDRO DATA SUPPLEMENT FOR EAST DUMP
• Section_Exhibit Name: APPENDIX I & APPENDIX J
• Media Type: D
• Archive: No

• METHOD OF PERFORMING COMPACTION TESTS
(STANDARD AND MODIFIED A.A.S.H.O. METHODS)
IT HAS BEEN ESTAB LLSHID THAT
WHEN COMPACTWG EFFORT Li HELD
CONSTANT, THE DENSITY OF A
ROLLED EARTH FILL INCREASES
WITH ADDED MOISTURE UNTIL A
MAXIMUM DRY DENSITY IS OBTAWED
AT A M06TURE CONTENT TERMED
THE "OPTIMUM MOISTURE CON-
TENT," AFTER WHICH THE DRY
DENSITY DECREASES. THE COM-
PACTION CURVE SHOWWG THE RE-
LATIONSHIP BETWEEN DENSITY AND
MOISTURE CONTENT FOR A SPECIFIC
COMPACT WG EFFORT IS DETER-
MWED BY EXPERIMENTAL METHODS.
TWO COMMONLY USED METHODS ARE
DESCRIBED iN THE FOLLOWWG
PARAGRAPHS.
FOR THE "STANDARD A.A.S.H.O."
• (AS.T.M. DG981iGT & A.A.S.H.O.
T99-GI) METHOD OF COMPACTION A
PORTION OF THE SOIL SAMPLE
PASSWG THE NO. 4 SIEVE LS COM-
PACTED AT A SPECIFIC MOISTURE
CONTENT W THREE EQUAL LAYERS
W A STANDARD COMPACTION CY-
LINDER HAVWG A VOLUME OF 1/30
CUBIC FOOT, USWG TWENTY-FIVE
12-WCH BLOWS OF A STANDARD 5-1/2
- POUND RAMMER TO COMPACT EACH
LAYER.
SOME APPARATUS FOR PERFORMING COMPACTION TESTS
Shows, from left to right, 5-I/2 pound yammer (sleeve
controlling 12" height of drop removed), I/30 cubic-
foot cylinder with removable collar and base plate,
and 10 Dound~rammer within sleeve.
IN THE "MODIFIED A.A.S.H.O." (A.S.T. M. D-1557-GGT r!< A.A.S.H.O. T IBOIiI) METHOD OF COMPACTION
A PORTION OF THE SOIL SAMPLE PASSING THE NO. 4 S[E VE [S COMPACTED AT A SPECIFIC MOISTURE
CONTENT 1N FIVE EQUAL LAYERS W A STANDARD COMPACTION CYLWDER HAVWG A VOLUME OF
I/30 CUBIC FOOT, USWG TWENTY-FJYE 18-INCH BLOC'S OF A 10-POUND RAMMER TO COMPACT EACH
LAYER. SEVERAL VARIATIONS OF THESE COMPACTION TESTING METHODS ARE OFTEN USED AND
THESE ARE DESCRIBED IN A.A.S.H.O. r!< A.S.T.M. SPECIFICATIONS.
FOR BOTH AfETHODS, THE WET DENSITY OF THE COMPACCED SAMPLE !S DETERA4NED BY WEIGHWG
THE KNOCTI VOLUME OF SOIL; THE MOISTURE CONTENT, HY MEASURING THE LOSS OF WEIGHT OF A
ap PORTION OF THE SMIPLE C7iEN OVEN DRIED; AND THE DRY DENSITY, BY COMPUTING IT FROM THE
~ C'ET DENSITY AND AXIISTURE CONTENT, A SERIES OF SUCH COMPACTIONS 15 PERFORMED AT W-
CREASING AOISTURE CONTENTS UNTIL A SUFFICIENT NUMBER OF POINTS DEFWWG THE MOISTURE-
DENSITY RELATIONSHIP HAVE BEEN OBTAINED TO PERMIT THE PLOTTING OF THE COMPACTION
CURVE. THE MAX GLUM DRY DENSITY AND OPTIMUM MOISTURE CONTENT FOR THE PARTICULAR COM-
n PACTING EFFORT ARE DETEFUIINED FROM THE COMPACTION CURVE.
_n
7
GAMES B MOORE
Plate A-3