California Bearing Ratio (Aimil)

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California Bearing Ratio Test
The California Bearing Ratio test, (usually
called CBR test) is an empirical test developed
in California, USA for determining the Relative
Bearing Ratio expansion characteristics under
known surcharge weight of base, sub-base and sub
grade soils for the design of roads, payments
runways. The CBR test is used extensively in
selection of materials control of
subgrades. The test can be performed in the
laboratory on prepared samples or in-situ on
location. It is important to appreciate that this
test, being of an empirical in nature, is valid
only for the application for which it was
developed i.e., the design of highway base
thickness.
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Features of California Bearing Test

• Salient Features of California Bearing Ratio are
• Compact, bench top design
• Rapid Platen Adjustment
• Complete with stabilizing bar
• Options for mechanical or electrical measurement
• Suitable for operation on 220V, 50Hz, single
  phase, AC supply

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California Bearing Ratio Test Apparatus

• This apparatus, mounted on a rolled steel joist
  cantilevered from the back of the truck or fitted
  to the underside of a mobile frame, can be used
  to determine the bearing ratio (generally known
  as the California Bearing ratio) of soils quickly
  and efficiently for the evaluation of strengths
  of sub-grade bases for roads runway
  pavements.
• This method of testing in-situ, using piston
  penetration, is useful for determining the load
  carrying capacity in the field, when the in-place
  density and water contents are such that the
  degree of saturation is 80 or greater, when the
  material is coarse grained and cohesion less so
  that it is not affected by changes in the water
  content when the material has been in-place.

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Models of California Bearing Ratio Test Apparatus

• Laboratory California Bearing Ratio Test
  Apparatus, Motorised, Three Speed
• Laboratory California Bearing Ratio Test
  Apparatus, Motorised, Two Speed with Mild Steel
  Moulds
• Laboratory California Bearing Ratio Test
  Apparatus, Motorised, Electronic
• Laboratory California Bearing Ratio Test
  Apparatus, Motorised, Electronics with Geostar
  DAQ

For more details visit California Bearing Ratio
Test.
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Geostar the Geotechnical Software for Testing,
Analysis Reporting

• The analysis reporting of following Tests can
  be performed
• Unconsolidated Undrained Triaxial Test
• Consolidated Undrained Triaxial Test
• Consolidated Drained Test
• Direct/Residual Shear Test
• CBR Test
• One Dimensional Consolidation Test
• These package of software's are supplied as
  required by the purchaser are accessed by an
  activation license supplied by Aimil, allowing
  the customer to build up a suite of software on
  an "as required basis" depending upon the need.

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Common Features of all the Tests

• The software allows selection of British/Indian
  Standards for analysis as required.
• Tests can be performed in SI, Imperial or metric
  Units.
• Clear Easy to use. Test information is
  presented on menu driven screen.
• The software directly reads the data format for
  analysis from StarDAQ.
• Customisable Report Header/Footer
• The inbuilt utilities include Master Unit
  Converter, Unit Converter Calculator, besides the
  normal Scientific system calculators.
• Database back up restore facilities are
  available.
• Complete User activity logging is available.

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Features Graphs available for CBR Analysis
Software

• Special features graphs available for CBR
  analysis software
• Manual data entry facility
• Find out CBR value in at 2.5mm 5mm
  Penetration
• Graph for load vs Penetration (top side, bottom
  side both)
• Graph correction facility available
• Graph expand facility

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Contact Us
011-30810200
info_at_aimil.com
Naimex HouseA-8, Mohan Cooperative Industrial
Estate,Mathura Road, New Delhi - 110 044
011-26950011
www.aimil.com