California Bearing Ratio

Product
“LYNX” California Bearing Ratio Apparatus is made both for laboratory and field use. CBR  test is to evaluate the bearing capacity of soil for the  flexible pavement design. It is extensively used for the selection of materials and control of subgrades. The potential expansion/consolidation of the specimen is also measured before each test, under known surcharge weights.

LM17204

 

LM17204 : IN-SITU   CBR  TEST  APPARATUS

 

Conforms to IS : 2720 (Part-31)
The apparatus consists of the following  :
A hand operated screw type loading jack (50 kN) with two strains, a ‘U’ bracket and swivel head, a thrust bar which passes through the ‘U’ bracket, a penetration piston of 50 mm. diameter with a set of 7 extension pieces of assorted sizes and connectors, a dial gauge support of welded steel, complete with an adjustable bracket for dial gauge and a set of 2nos. each of 5kg. and 10kg.slotted surchage weights and 1no. of 5kg.annular surcharge weight. Supplied without proving ring and dial gauge.

 

ESSENTIAL

LM17147 : Proving ring, 50 kN capacity.
LM173494 : Dial gauge 0.01 mm. x 25 mm. travel.

   

SPARE

LM172041 : Penetration piston assembly.

     

LM17205

 

LM17205 : LABORATORY  CBR  TEST  APPARATUS (HAND OPERATED)

 

Conforms to IS : 2720 (Part -16) This apparatus comprises of :
A hand operated load frame 50kN capacity, as LM17102.
A mould of 150 mm. I.D. x 175 mm. high with clamping lugs complete with extension collar and perforated base plate made of gun metal.
A cutting collar to fit mould body.
A penetration piston assembly of 50 mm. diameter and a bracket or the dial gauge.
A perforated swell plate of 148 mm. diameter with an adjustable stem and lock nut.
A circular  spacing disc of 148 mm. diameter x 47.7 mm. high complete with a removable ‘T’ handle.
A metal tripod for the dial gauge.
Surcharge weight : annular – 2.5 kg., 147 mm. diameter. Surcharge weight : slotted   – 2.5 kg., 147 mm. diameter.

 

ESSENTIAL

LM17144 : Proving ring  10 kN capacity.
LM173494 : Dial  gauge 0.01 mm. x 25 mm. travel.
LM173314 : Rammer 4.89 kg. with a free fall of 450 mm

     
   

SPARES

Spares for CBR

 

LM172051: CBR mould complete with extension collar and perforated base plate, made of gunmetal.
LM172052 : CBR mould complete with extension collar and perforated base plate, made of steel.
LM172053 : Perforated swell plate with adjustable stem and lock nut, made of gunmetal.
LM172054 : Perforated swell plate with adjustable stem and lock nut, made of steel.
LM172055 : Solid base plate, made of gunmetal.
LM172056 : Solid base plate, made of steel.
LM172057 : Cutting collar .
LM172058 : Penetration piston assembly.
LM172059 :  Metal tripod for dial gauge.
LM172060 : Circular spacer disc, made of steel
LM172061 : Surcharge weight (Annular) 2.5 kg.
LM172062 : Surcharge weight (Slotted) 2.5 kg.
LM172063 : Surcharge weight (Annular) 5 Kg.
LM172064 : Surcharge weight (Slotted) 5 Kg.

     

LM17206

 

LM17206  : LABORATORY  CBR  APPARATUS (MOTORISED).

 

This apparatus is similar to LM17205, except that the unit is supplied with a motorised load frame with a single speed of 1.25 mm. / min., as LM17103
Wired for 230V., sph.  50 Hz.

LM1720601

 

LM1720601 : DIGITAL READOUT  KIT  FOR  CBR

 

The unit consists of :
2 channels Digital Indicator with following specifications :
Display       : 6 digits, 12.5mm. high, 7 segments red LED
Tare           : Facility for individual channel
Peak Hold  : Facility for individual channel
Input          : Channel  01- Load Cell
                  : Channel  02- Displacement Transducer

Transducers

 

Specification :

Load Cell                         : 10 kN, resolution 0.01kN.
Displacement Transducer  : 20 mm., resolution 0.01mm.
Output                              : RS - 232 Serial port.
Wired for 230V., sph. 50 Hz.

 

LM1720602 : “LYNX” 8 -  CHANNEL  DATA  LOGGER

 

Similar to LM1720601, except that the digital readout kit is replaced with a Data Logger, as LM1711002.

     
    LM1720603 : SOFTWARE  FOR  CBR
   

The software plots load/penetration curve and calculates accurately the CBR value.

     
   

LM17209 : NORTH  DAKOTA  CONE

   

Conforms to IS : 2720 (Part - 32).
Complete with a set of 7 weights and a hardened steel cone.

     

LM17210

 

LM17210 : SWELL  TEST  APPARATUS

 

It comprises of :
Hand operated load frame 50kN capacity, as LM17102, mould
1000 cm complete with base plate, collar, perforated swell plate, pair of porous stones, spacing disc, end plug, load transfer bar and steel ball.  Soaking tank 250 mm.diameter x 200 mm. high. Supplied without proving ring and dial gauge.

 

ESSENTIAL

LM17142  : Proving ring  2 kN  capacity.
LM173494 : Dial gauge 0.01 mm. x 25 mm. travel.

SPARES

LM172101 : Compaction mould complete with base plate and collar.
LM172102 : Set of porous stones of 100 mm. diameter x 12.7 mm. thick.

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