CBR , Consolidation, Direct Shear

CBR TEST MACHINE

This machine is suitable for test of soil ad mix materials compacted with CBR mold so as to confirm the bearing loading ability of pavement, roaded subcrst as well as material layer of the roaded to be designed. It consists of a twin column frame, proving ring, penetration bar, loading plate, micrometer, measuring device for swell increment etc. and easy to operate.

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CBR TEST MACHINE

CALIFORNIA BEARING RATIO (CBR) LABORATORY TEST SYSTEMS

The California Bearing Ratio (CBR) test yields relative strength of laboratorycompacted or in–situ soils and base course materials. This laboratory test is based on penetration
resistance of a soil to a standard-sized piston. Karol-Warner Pro-Loader Load Frames are ideal for Laboratory CBR testing, and a quick change of test components converts them to perform other soil testing applications. Pro-Loader frames feature 10,000lbf (44.5kN) capacity with 11.9×37.3in (302x947mm) WxH frame openings. 3/4hp DC motors and controllers precisely regulate strain rates to ±1% of set point, and the frames have sturdy 14-gauge painted steel enclosures. Adjusting nuts on the coarse-threaded vertical rods allow technicians to quickly change the horizontal cross-head height. Units operate on 115V/60Hz power supplies. Rolling Cart for Pro Loader Frames is sturdy steel and makes positioning of Load frames easy. Add “F” suffix to model numbers to order units operating on 230V/50Hz. Product Dimensions: 18x29x54.5in (457x737x1,384mm) WxDxH.

Triplex Consolidation Apparatus

WG – 1C Triplex Consolidation Apparatus is used for compression test of soil and to determine the relationship between deformation and compression of soil, to clculate the unit sediment compression index, resilient index, as well as consolidation coefficient of soil etc

HM – 353 Lever-Loaded Consolidation Apparatus

HM-353 Lever-Loaded Consolidation Frame, often referred to as an oedometer, is simple and efficient to use. The compact table-top frame is constructed of anodized aluminum for corrosion resistance. The unit has a capacity of 48tsf and is equipped with a rear-weight counterbalance beam assembly allowing 9:1, 10:1 or 11:1 beam ratios. The design allows instantaneous loading with minimal impact. Weight sets must be purchased separately for each frame.

DIRECT SHEAR APPARATUS

To determine the shearing strength of the soil using the direct shear apparatus. In many engineering problems such as desigh of foundation, retaining walls, slab bridges, pipes, sheet piling, the value of the angle of internal friction and cohesion of the soil involved are required for the design. Direct Shear Test is used to prevent these parameters quickly. The laboratory report cover the laboratory procedures for determing these values for cohesionless soils. Strain controlled direct shear machine consists of shear box, soil container, loading unit, proving ring, dial guage to measure shear deformation and volume changes. A two piece square shear box is one type of soil container used.

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DIRECT SHEAR APPARATUS

DIRECT SHEAR APPARATUS

Gilson Pneumatic Direct/Residual Shear Machines are tabletop units manufactured in cooperation with Karol-Warner. Direct and residual shear values give important information for evaluating the strength and stability of soils. The test is performed on a variety of soil types with either undisturbed or remolded samples. The specimens are carefully trimmed into a Direct Shear Box, which is split to allow individual movement of the upper and lower halves. A vertical confining load is applied to the specimen, and a horizontal shear force is applied to the lower half of the shear box, while the upper half remains stationary. After shear failure has been measured, the force direction is reversed to determine residual shear values.

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DIRECT SHEAR APPARATUS