AASHTO T180-01

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Carl 2024-09-22 25 653.27KB 11 页 20星币
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Standard Method
of
Test
for
MoistureDensity Relations
of
Soils
Using
a
4.54kg
(lO=lb)
Rammer
Drop and
a
4571mm
(18=in,)
AASHTO
Designation:
T
180-01
1.
SCOPE
1.1.
1.2.
1.3.
1.4.
1.5.
This method of test is intended for determining the relationship between the moisture content and
density of soils when compacted in a given mold of a given
size
with a 4.54-kg (10-lb) rammer
dropped from a height of 457
mm
(18 in.). Four alternate procedures are provided as follows:
W
Method
A-A
101.60-mm (4-in.) mold: Soil material passing a 4.75-mm
(No.
4) sieve
Sections
3
and 4.
Method
B-A
152.40-mm (6-in.) mold: Soil material passing a 4.75-mm
(No.
4) sieve
Sections
5
and
6.
Method
C-A 101.60-mm (4-in.) mold: Soil material passing a 19.0-mm (3/4-in.) sieve
Sections 7 and
8.
0
Method
D-A
152.40-mm (6-in.) mold: Soil material
passing
a 19.0-mm (3/4-in.) sieve
Sections 9 and
10.
The method to be used should be indicated in the specifications for the material being tested. If no
method is specified, the provisions of Method
A
shall govern.
This test method applies to soils mixtures that have 40 percent or less retained on the 4.75-mm
(No.
4) sieve, when Method
A
or
B
is used and
30
percent or less retained on the 19.0-mm (%-in.)
sieve, when Method
C
or
D
is used. The material retained on these sieves shall be defined as
oversize particles (coarse particles).
If the test specimen contains oversize particles, and the test specimen used for field density
compaction control, corrections must be made according to
T
224 to compare the total field
density with the compacted specimen. The person or agency specifying this method shall specify a
minimum percentage of oversize particles below which correction for oversize need not be
applied. If no minimum percentage is specified, correction shall be applied to samples with more
than five percent by weight of oversize particles.
If the specified oversized maximum tolerances are exceeded, other methods of compaction control
must be used.
Note
1
-One method for the design and control of the compaction of such soils is to use a test fill
to determine the required degree of compaction and a method to obtain that compaction. Then use
a method specification to control the compaction by specifying the type and size of compaction
equipment, the lift thickness and the number of passes.
TS-1
b
T
180-1
AASHTO
Copyright American Association of State Highway and Transportation Officials
Provided by IHS under license with AASHTO
Document provided by IHS Licensee=Aramco HQ/9980755100, 04/20/2004 02:41:48 MDT
Questions or comments about this message: please call the Document Policy Group
at 303-397-2295.
--```,``,,`,,```,`,``,```,`,,``-`-`,,`,,`,`,,`---
1.6.
The following applies to all specified limits in this standard: For the purposes of determining
conformance with these specifications, an observed value or a calculated value shall be rounded
off
?to the nearest unit? in the last right-hand place of figures used in expressing the limiting
value, in accordance with
R
1
1.
1.7.
The values stated in SI units are to be regarded as the standard.
2.
REFERENCED DOCUMENTS
2.1.
AASHTO Standards:
W
M
92, Wire-Cloth Sieves for Testing Purposes
W
M
23 1, Weighing Devices Used in the Testing of Materials
R 11, Indicating Which Places
of
Figures Are to Be Considered Significant in Specified
Limiting Values
T
19m 19M,
Bulk
Density (?Unit Weight?) and Voids in Aggregate
W
T 224, Correction for Coarse Particles in the Soil Compaction Test
W
T 265, Laboratory Determination of Moisture Content of Soils
2.2.
ASTM Standards
W
D 2 168, Calibration of Laboratory Mechanical-Rammer Soil Compactors
3.
APPARATUS
3.1.
Molds-The molds shall be solid-wall, metal cylinders manufactured with dimensions and
capacities shown in Sections 3.1.1 and 3.1.2. They shall have a detachable collar assembly
approximately
60
mm
(23/8 in.) in height, to permit preparation of compacted specimens of soil-
water mixtures of the desired height and volume. The mold and collar assembly shall be
so
constructed that it can be fastened firmly to a detachable base plate made
of
the same material
(Note 2). The base plate shall be plane to 0.13
mm
(0.005
in.) as shown in Figures 1 and 2.
Note
2-Alternate types
of
molds with capacities as stipulated herein may
be
used,
provided the
test results
are
correlated with those
of
the solid-wall mold on several soil types and the same
moisture-density results are obtained. Records of such correlation shall be maintained and readily
available for inspection, when alternate types of molds are used.
3.1.1.
A 101.6-mm (4411.) mold having
a
capacity of 0.000943
f
0.000008 m3
(1/30
(0.0333)
I
0.0003
CU
ft) with an internal diameter of 101.60
*
0.41 mm (4.000
I
0.016 in.) and a height of
116.43
f
0.13
mm
(4.584
*
0.005
in.) (Figure 1).
3.1.2.
A 152.4-mm (6-in.) mold having a capacity of 0.002124
f
0.000021 m3 (U13.33
(0.07500)
-c
0.00075
CU
ft) with an internal diameter of 152.40
&
0.66
mm
(6.000
f
0.026 in.) and a height
of
116.43
f
0.13
mm (4.584
f
0.005
in.) (Figure 2).
3.1.3.
Molds Out ofTolerance Due to Use-A mold that fails to meet manufacturing tolerances after
continued service may remain in use provided those tolerances are not exceeded by more than
50
percent; and the volume of the mold, calibrated in accordance with T 19R 19M, is used in the
calculations.
TS-1
b
T
180-2
AASHTO
Copyright American Association of State Highway and Transportation Officials
Provided by IHS under license with AASHTO
Document provided by IHS Licensee=Aramco HQ/9980755100, 04/20/2004 02:41:48 MDT
Questions or comments about this message: please call the Document Policy Group
at 303-397-2295.
--```,``,,`,,```,`,``,```,`,,``-`-`,,`,,`,`,,`---
I-
165.10
f
2.54
I
t
2
Section
A-A
I-
38.10
*
2.54
-I
$
+I
O
F
(A)
Wing
Nut
(4)
(C)
Hanger (4)
(O)
Weld
(Top
and
Bottom
of
Each Hanger)
(E)
Collar (1)
(F)
Mold
(1)
(G)
Base
Plate (1)
(BI
Stud
(2)
"
-
152.40
f
2.54
-
Location
of
Studs
in
Base
Plate
Notes:
1.
All dimensions shown in millimeters unless otherwise noted.
2.
3.
4.
Not
to
scale.
Hanger
on
the mold portion
only
cannot extend above
the
midheight line.
Figure
1
is
to
be
used
for
all compaction molds purchased after
the
publication
o
f
the 21s edition (HM-21).
Figure
1
-Cylindrical Mold and Base Plate
(101.60-mm
Mold)
TS-1
b
T
180-3
AASHTO
Copyright American Association of State Highway and Transportation Officials
Provided by IHS under license with AASHTO
Document provided by IHS Licensee=Aramco HQ/9980755100, 04/20/2004 02:41:48 MDT
Questions or comments about this message: please call the Document Policy Group
at 303-397-2295.
--```,``,,`,,```,`,``,```,`,,``-`-`,,`,,`,`,,`---
摘要：

AASHTO T180-01 是美国国家公路与运输协会（AASHTO）发布的一项标准试验方法，全称为“Standard Method of Test for Moisture-Density Relations of Soils Using a 4.54-kg (10-lb) Rammer and a 457-mm (18-in.) Drop”，即采用4.54公斤（10磅）夯锤与457毫米（18英寸）落高的土壤湿密度关系测定方法。该标准主要用于测定土壤在特定压实功下的最大干密度与最优含水率，广泛

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作者：Carl 分类：国外协会 价格：20星币 属性：11 页 大小：653.27KB 格式：PDF 时间：2024-09-22

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