free website hit counter Californian Bearing Ratio

Californian Bearing Ratio

C-B-R (California Bearing Ratio) number of soil used for the designing the surface of roads for this purpose soil samples with the desired compaction is prepared in a special mold and then be tested with the machine.

In this test a piston with the standard base level (3 square inches or 35.19 cm) with a standard speed of 27.1 mm per minute to be pressed into the soil the force required to penetrate certain values measured as a percentage compared with the baseline.

The C.B.R device is offered in two models of manual and electric.

  1. In the manual model a manual jack connected to the frame which is reinforced with a maximum capacity of 30KN that can be used in the laboratory or it is capable to assembling the uploading jack on the main frame of the vehicle and transfer it to the site location.
  2. In considering of Permanent establishment the electric models in the laboratory to reduce the costs, speed so this device offered with the ability of Marshall Asphalt test.
Standards:
ASTM D1883, BS 1377, 1924,

  • CBR_Set_11
  • CBR_Set_12
  • CBR_Set_13
  • CBR_Set_14

Technical information of manual model:

Ordering Code: SMSO-3370
Capacity: 30 KN ( 3 Ton )
Load Ring Capacity: 30 KN ( 3 Ton )
Vertical Gauge: 0-25 mm, 0.01 mm
Penetration Piston:
3 in2 (1.935 mm2), 3.7 Kg
Dimension: 40×20×120 Cm ( L×W×H )
Weight approx: 41.6 Kg
Jack displacement course: 10 Cm
Horizontal clearance: 27.3 Cm
Vertical clearance:
35 Cm

C.B.R Mould:

Ordering Code: SMSO-3380
Internal dimensions: Ø15×23 Cm
Dimensions: 20×20×36 Cm ( L×W×H )
Weight approx: 31 Kg

Accessories:

Order
Code
Description
Dimension
mm
Weight approx
Kg
Material
SMSO-3386
Collar
Ø165×50
1.240
Mannesmann Pipe
SMSO-3387
Main Body
Ø165×180
4.225
Mannesmann Pipe
SMSO-3388
Perforated Base Plate, 150μm mesh
10×200×200
2.920
Iron
SMSO-3389
Simple Base Plate
200×200×10
2.670
Iron
SMSO-3390
Mesh (perforated) Plate with handle
Ø150×6
Handle length 160
1.160
Brass
SMSO-3391
Swell Measurement Tripod
190×110×120
0.460
Aluminum
SMSO-3392
Spacer Plate
Ø150×60
8.535
CK45
SMSO-3393
10 lb Annular Surcharge Weight
Ø150×40
4.550
CK45
SMSO-3394
5 lb Split Surcharge Weight
Ø150×20
2.235
CK45
SMSO-3395
5 lb Annular Surcharge Weight
Ø150×20
2.255
CK45
SMGE-1120
Swell Dial Gauge
25 mm travel × 0.01 mm
160×80×55
0.165

Compressive stresses to influence the standard basis is as follows.

Penetration value

mm

Standard Tension

Mpa

Force

lb

2.5

6.9

3000

5.0

10.3

4500

7.5

13.0

5700

10.0

16.0

6900

12.7

18.0

7800

 

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         PARS SAN'AT Commerial Complex
         FAT'H Highway, TEHRAN, IRAN
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