The ST – 120 Dynamic Cone Penetrometer is an instrument designed for the rapid instrument measurement of the structural properties of existing road pavements constructed with unbound material. Continuous measurement can be made down to depth of approximately 850 mm or when extension shaft are used to recommended maksimum depth of 2 m. Correlation’s have been established in earlier work (Van Vuuren 1969, Kleyn and Van Heerden 1983, Smith and Pratt 1983) between measurement with the Dynamic Cone Penetrometer and California Bearing Ratio (CBR) so that the result can be interpreted and compared with CBR specification for pavement design. A typical test takes only a few minutes and therefore the instrument provides a very efficient method of obtaining information that would normally require the digging of test-pits.
General description and spesifications
The design of the Dynamic Cone Penetrometer is similiar to that described by Kleyn, Maree and Savage (1982) in that it uses an 8 kg weight dropping throught a height of 577 mm and a 600 cone having a diameter of 20 mm.
Dimension (L x W x H) : 107 x 14 x 14 cm
Weight approx : 17 kg
SPECIFICATION
| TYPE | DESCRIPTION | QTY |
|---|---|---|
| ST-121 | Handle.Stainless steel | 1 pc |
| ST-122 | Hammer. Machined steel , painted, 8 kg weight | 1 pc |
| ST-123 | Guide Rod.Stainless steel, 16 mm dia drop height 575 mm | 1 pc |
| ST-124 | Anvil.Machined steel , painted | 1 pc |
| ST-125 | Penetration Rod. Stainless steel, 16 mm dia 1070 mm length | 1 pc |
| ST-126 | Cone,Hardened steel. 60 degree angle, 20 mm dia | 3 pcs |
| ST-127 | Penetration Scale.Stainless steel, 19 mm dia 1000 mm scale | 1 pc |
| ST-128 | Carrying Bag . Water Proof cloth | 1 pc |
| ST-830 | Double Open End Wrench.Size 14 x 15 Chrome vanadium steel, Professional quality, Polished jaws | 2 pcs |
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