CBR test machine (hand operated)

CBR test machine (hand operated) Description and Specifications for Lab Tenders

CBR test machine (hand operated)  Use: CBR test in Lab to determine soil bearing capacity.

Standard:

·  BS 1377, 1924, EN 13286-47, ASTM D1883, AASHTO T193 specifications

Equipment parts to above standards:

·  1 CBR Loading Press.

·  Proving Ring. 28 kN (6,000 lb) capacity.

·  Proving Ring. 50 kN (11,200 lb) capacity.

·  Penetration Dial Indicator. 25 mm range x 0.01 mm divisions.

·  4 CBR Molds.

·  1 Spacer Disc.

·  4 Filter Screens.

·  1 Box, Filter Paper.

·  2 Swell Plates.

·  1 Tripod Attachment.

·  4 Surcharge Weights.

·  4 Slotted Surcharge Weights.

·  1 Compaction Hammer.

·  1 Straightedge.

·  1 Cutting Edge.

Specifications:

a)      CBR loading press:

Jack: Mechanical, with quick release device for rapid adjustments.

Frame:           Heavy-duty steel construction with two column uprights.

Dimensions:  368 x 260 x 1,168 mm (14.5" w. x 10.25" d. x 46" h).

Weight:         Net 65.7 kg (145 lbs)

b)      Filter paper

·  Filter Paper made to ASTM D-1883;AASHTO T-193

·  Grade:                       Coarse.

·  Size:              15 cm diam. (5.9").

·  Weight:         Net 227 g. (8 oz).

c)      Filter screen

·  Mesh:                        Cut to 135 mm (5-15/16") in diameter.

                      Brass; number 100.

·  Size:              135 mm diam. (5-15/16"),

·  Weight:         Net 1 oz. (28 g).

d)      Spacer discs

·  Construction:                        Steel; machined on all sides.

·  Finish:                                   Plated.

·  Size:                          47.6 x 50.8 mm (5-7/8" diam. x 2" h.) and 150.8 x                             61.3mm (15/16" diam. x 2.416" h).

·  Weight:                     Net 6.3kg and 7.3 kg.

e)      Surcharge weights

·  Construction:                        Machined steel made to BS ISO 19960:2005

·  Finish:                                   Plated.

·  Weights                     2.27 kg Slotted. 149.2 x 52.4 mm.

                                 2.27 kg Circular. Slot 149.2 x 52.4 mm.

                                 4.54 kg Slotted 216 mm.

                                 4.54 kg Circular 254 mm

                                 9.07 kg Slotted 216 mm.

f)       CBR Mould

·  CBR Mold made to ASTM D-1883;AASHTO T-193 and BS 1377

·  Internal diameter:      152.4 mm (6")

·  Height:                                  177.8 mm (7")

·  Mould:                                  152.4 x 177.8 mm (6" d. x 7" h.).

·  Collar:                                   50.8 mm. (2" h); fits both ends of mould.

·  Base Plate:                Perforated; fits both ends of mould.

·  Construction:                        All steel and plated.

·  Weight:                     Net 9 kg. (20 lbs).

g)      Swell plate

·  Swell Plate made to ASTM D-1883; AASHTO T-193.

·  Base Plate:                149.2 mm. (5-7/8" diam); perforated.

·  Contact Head:                       Adjustable; locks on stem with knurled nut.

·  Construction:                        All brass.

Weight:                     Net 1.1 kg. (2-1/2 lbs).

h)      Cutting edge

·  Construction:            Machined from seamless steel tubing

·  Inside diameter:                    152.4 mm (6")

·  Height:                                  38 mm (1-1/2").

·  Overall Dimensions: 152.4 x 38 mm. (6" d. x 1-1/2" h).

·  Construction:                        Machined seamless steel tubing; recessed for                                                 mounting on CBR Mould.

·  Finish:                                   Plated.

·  Weight:                     Net 0.7 kg. (1-1/2 lbs).

i)        Tripod attachment

·  Tripod Attachment made to ASTM D-1883;AASHTO T-193

·  Construction:                        Machined, one-piece cast aluminum.

·  Clamp:                                  Integral part of assembly; holds dial indicator.

·  Extension Point:                   50.8 mm. (2" l) included.

·  Weight:                     Net 0.4 kg. (1 lb).

j)        Dial indicators

·  Low friction for long wear and highly accurate repeat readings.

·  Low contact pressure for fast response in both directions.

·  Contact Point.           Immediate response, up or down; tip movement magnified to                         indicator hand with minimal friction; 5 mm (3/16") radius                                   x 6 mm (1/4").

·  Dials.                        With continuous graduations and revolution counters.

·  Range                        5mm up to 25mm

·  Divisions       0.0025 mm up to 0.1mm

·  Movement     Clockwise and counter clockwise

·  Face dimensions  57 mm to 92mm

·  Weight.         Net 340 g. (12 oz).

·  Extension points:                 6 mm (1/4"), 13 mm (1/2")

                                 25 mm (1"), 76 mm (3")

Dial Indicator Holder with Magnet Base.

k)      Proving rings

·  Integral type Compressive Proving Rings of different capacities

·  Proving ring ranges:  50 to 500kg.

                                 500 to 3000kg.

                                 3000 to 5000kg.

                                 5000 to 10000 kg.

                                  10000 to 20000 kg.

l)        Standard compaction rammer

·  Has 2.5kg (5.5lb) mass enclosed in a guide sleeve with vent holes to insure unrestricted free-fall.

·  Drop                         305mm (12in).

·  Weight          Net 4.1 kg. (9 lbs).

·  Guide Sleeve.            Machined steel tubing with integrally spun end cap; air                                  pressure release holes.

m)    Heavy compaction rammer

·  Rammer 4.89 kg x 450 mm controlled fall for heavy compaction test according to IS 2720 (Part - VIII).

·  Modified Compaction Hammer has 10lb (4.5kg) mass enclosed in a guide sleeve with vent holes to insure unrestricted free-fall.

·  Drop                          457mm (18in).