Compaction tests results vary with the input compactive effort, usually measured in foot-pounds per cubic foot of soil. â«. The line of optimum moisture contents is ...
Modified Proctor (AASHTO T180/ASTM D1557) testing procedures more closely approximate ... The corresponding American Society for Testing and. Materials ...
ABSTRACT. In the past few decades, size and weight of agricultural machinery have increased significantly, and as a consequence, the severity and depth to ...
The standard Proctor test approximates maximum soil density capable of being produced by ... Laboratory procedures known as the modified Proctor test (ASTM D 1557/AASHTO T 180) have ... List of Tables. Table 1. ..... ASTM International.
Alternatives to the Nuclear Density Gauge in Missouri Highway Projects. ... 1617 Missouri Boulevard, Jefferson City, MO 65109; PH (573) 751-1044; FAX (573) ...
International Standard ISO/IEC 7816-4 was prepared by Joint Technical ... ISO/
IEC 7816-9:2000, Additional interindustry commands and security attributes ...
12. Part 4 of 6. Equipment Evaluations on the Francis Marion National Forest.
Figure 13—The Ultra Light Terrain Grader was designed for roads and parking
lots ...
The species is named to honour Dr Des Griffin for his contribution to majid
taxonomy. DISTRIBUTION. Australia, from SEQ to northern N.S.W..
Benthochascon ...
Director, Elmac Services, www.elmac.co.uk, Associate of EMC-UK ... 'pre-compliance' testing with various degrees of accuracy, on-site testing for large systems ...
citra. Beberapa contoh teknologi PJ. Contoh sistem PJ yang paling dikenal
adalah satelit pemantauan cuaca bumi. Dalam hal ini, target adalah permukaan
...
Figure 2. The "ion rocket" -- a possible method of applying nuclear energy to rocket propulsion where an initial stable
money and property is not counted as income and is also not counted as an
asset. .... Similarly, DTA should not reimburse itself for TAFDC benefits you repaid
to ...
The structure of the male and female rat mammary gland responds to hormonal
.... and non-human primates, it is not a common change in rats except following ...
legal formalities associated with transfer, nor any need for a court order .... Companies and Securities Law (1994) at 270; Re 'L' Hotel Co Ltd ..... protection that led to the rejection of a 'court free' merger procedure by the ...... 134 See art 2:
a) My Daytime Phone Number is. ( __ __ __ ) â __ __ __ â __ __ __ __. b) I don't have a Daytime Phone Number. N-400
THEN I looked, and behold, the Lamb was standing on Mount Zion, and with Him one hundred and forty-four thousand, having
by writers of fiction, most notably H.G. Wells, who has his moon-voyagers employ "cavorite", a mysterious Welght-annu Ll
Testament. S.v. " fiYTOTQO'Qw. Theological Dictionary of the New. Testament.
Easton, Burton Scott. "New Testament Ethical Lists." Journal of. Biblical Literature
...
Russia (http://odur.let.rug.nl/~bergmann/russia/languages/yukagir.htm). According to ...... Istorija pokorenija Sibiri [The history of the conquest of Siberia]. Äita.
Javanese describe this as manunggaling kawula Ian gum' or fusing of people
and lord, something which in political life is actually a totalitarian condition.
No part of this publication may be reproduced, translated, or ..... _____ God has shut up all in disobedience that He mi
No part of this publication may be ... In our first lesson of Romans Part 4, the homework will be divided into two .....
Hubungan Interpersonal (Part 4). Azizi Hj Yahaya. 4. Peneguhan hubungan
Interpersonal. Hubungan interpersonal adalah sesuatu yang bersifat tidak stabil
...
The Raspberry Pi will convert any TV or monitor into a full blown media center
when using XBMC. Because the Raspberry Pi is so small, it will snug away
behind ...
developed during the. Second World War to run density tests in granular mixtures, and specify repairs and spot patches. These pictures are from Iwo.
Part 4
COMPACTION TESTING
Runway Repairs
Procedures were developed during the Second World War to run density tests in granular mixtures, and specify repairs and spot patches. These pictures are from Iwo Jima in July 1945
coincide with 85% saturation
Which Test Are You Using?
Modified Proctor 56,250 ft-lbs/ft3 California Test 216-F 37,000 to 44,000 ft-lbs/ft3
Standard Proctor 12,400 ft-lbs/ft3
The most important figure in this lecture
Compaction tests results vary with the input compactive effort, usually measured in foot-pounds per cubic foot of soil. The line of optimum moisture contents is usually around 85% saturation and the optimum moisture content decreases with increasing compactive effort.
The Standard Proctor test (ASTM D698) employs 12,400 ft-lbs/ft3 of soil, while the Modified Proctor (ASTM D1557) uses 56,250 ft-lbs/ft3. This typically leads to variances between 8% and 11%, as shown above.
8% difference in clayey sand
10% difference in silt
Comparisons between Modified Proctor, Standard Proctor, 15-blow Proctor, and Porter static compaction tests on samples of silt and clayey sand by the Army Corps of Engineers in 1945.
SPECTURM OF CURVES
The maximum achievable density depends on the type of material, as well as the input energy during compaction. It is commonly used for diatomaceous earth and halyositic clays.
Average maximum dry unit weight and optimum moisture content achieved by standard Proctor Tests (ASTM D698) with plastic limit (PL) and liquid limit (LL). This is a key figure to consult when compacting expansive clay soils. Taken from “Factors Influencing Compaction” (1962), HRB Report 319.
Curve Fitting and Speedy Moisture Meters The Speedy Moisture Meter is a portable system comprising a vessel with an integral pressure gauge a weighing scale in a portable case.
Family of expected wet density compaction curves, based on 18,000 compaction tests compiled by the Ohio DOT
A small sample of the material is prepared, weighed and placed into the vessel. The reagent is then added and the vessel is sealed and shaken to mix the reagent with the sample.
Compaction curves should be prepared for all types of soil in the project area, before earthwork commences. If different soils are mixed, then “check points” should be calculated to ascertain the optimum moisture level for the soil mixture being placed and tested. A great deal of judgment is required when performing such work.
Most field compaction tests are now made using nuclear density gages that employ a cesium element. Nuc gages can have significant errors if the extendable probe is located next to a rock > 3 inches across. In rocky fills the operator should always rotate the probe 90 degrees and take a second reading, recoding the lower of the two values.
