| Consolidation
and Compaction |
| The
one dimensional consolidation test is an extremely important part of soil
mechanics procedure. Soil of similar strength valves may exhibit widely
varying consolidation characteristics. Representative samples taken from
adjacent areas of a single site, when tested using the same odometer techniques,
can clearly show that differential settlement conditions are liable to occur
on site.
|
| Model
No. |
Description
(Sizes) |
Display |
| I
10 |
CONSOLIDATION
APPARATUS {AS PER IS 2720 PART XV}
Some
of the salient features of the apparatus are :
The standard outfit is supplied with a fixed ring type of con-solidometer
cell for testing specimens. The unit is so designed that varying sizes
of specimens can be tested by ordering the necessary accessories. The
standard outfit is supplied with a set of weights to give a total pressure
of 10 Kg/cm2, but additional weights can be ordered to reach the full
capacity of 20 Kg/cm2.
Different Types Are :
I 10.1 Single Gang Consolidation Apparatus.
I 10.2 Three Gang Consolidation Apparatus.
I 10.3 Six Gang Consolidation Apparatus.
I 10.4 Spare Consolidation Cell Fixed Ring Type.
|
|
| I
11 |
AUTOLEVEL
CONSOLIDOMETER
In
this apparatus, the loading lever maintains level automatically when weight
are added to the hanger and as consolidation of the specimen takes place.
Loading unit of maximum capacity 20 kg/scum’s micro switch arrangement
with drive motor and reduction gearing has been provided together with
a forward reverse switch.
Suitable for operation on 220/230 volts A.C |
|
|
COMPACTION |
| Compaction
control in the field is exercised by determining the moisture content and
maximum dry density, quick evaluation of this is done by developing curves
in the laboratory showing the relationship between moisture content Vs dry
density and penetration resistance using proctor needles while conducting
the standard compaction tests. This is further verified within reasonable
limits by determining the moisture content by using Rapid Moisture Meters. |
| I
12 |
PROCTOR NEEDLE (SPRING TYPE) :
It consists of a body housing a spring, a plunger calibrated to read and
a handle. Long stem graduated to indicate the depth of penetration and
for use with needles of larger areas Small stem graduated to indicate
the depth of penetration and for use with needles of smaller area. Needle
point set comprising one each of 0.25, 0.5, 1, 1.5, 2, 3, 5 & 6 sq.cm.
Supplied in a polished wooden case. |
|
| I
12.1 |
PROCTOR NEEDLE (HYDRAULIC TYPE) :
This is identical to the spring type except that the penetration pressure
on the needle is conveyed through a hydraulic system to a hydraulic pressure
gauge. This system permits a greater control over the rate of penetration
because of better visibility of load indication. It consists of bellow
housing, casing, casing pipe and pressure gauge. Handle 2 Nos. small stem
graduated to indicate the depth of penetration and for use with needles
of smaller areas. Complete in a polished wooden case. |
|
| I
13 |
PROCTOR
COMPACTION APPARATUS :IS 2720 (VIII)
The compaction test apparatus is used for establishing moisture density
relationship and for determining optimum moisture content and maximum
dry density with standard compactive effort assumed to be equivalent to
that normally employed for soil compaction in the field with use of common
rolling machines. The values obtained from the compaction test are used
for drawing specification for compaction at site and for exercising compaction
control in the field.
It consists of :
| I
13.1 |
Compaction
mould 100mm Dia X 127.3mm made of steel |
| I
13.2 |
Compaction
mould 100mm Dia X 127.3mm made of Gun Metal |
| I
13.3 |
Compaction
mould 150mm Dia X 127.3mm made of steel |
| I
13.4 |
Compaction
mould 150mm Dia X 127.3mm made of Gun Metal. |
| I
13.5 |
Rammer
2.6 Kg X
310mm fall |
| I
13.6 |
Rammer
4.89Kg X
450mm fall. |
|
|
| I
14 |
ABBOT'S
COMPACTION APPARATUS
Consists of a steel base, a steel tube and a steel rammer,51/2 lb.weight.
The stem of the rammer is graduated in 10ths of an inch |
|
| I
15 |
AUTOMATIC
COMPACTION APPARATUS
The principle of the machine is the falling by gravity of known weight
through pre-determined distance on to a sample which can be either static
or revolved automatically thereby setting up a method of compaction by
controlled ramming. Two set of rammers are provided , one is the 2.6 kg.
X 310 mm fall; and the second is the 4.89 kg. X 450mm fall.
|
|
blue.jpg)
