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For determining the supporting strength of soil and soil aggregate mixtures which pass the 2 mm and do not contain more than 10% sand size material. The results obtained by this AASHO & CBR Test. The silent features of this apparatus are :- i) The moulds used in this test are very small hence very smaller samples are required which is a great advantage when a large number of tests have to be carried out with a limited quantity of soil available. Also when large quantities of soil are available, fresh samples can be used for each test. ii) Time required this test is very much less than C.B.R. test and thus more number of tests can be carried out.
Salient Features
- Specifications: Load frame, mechanical, hand operated, capacity 5000 kg. Cylinder Mould, brass, internal diameter 50 mm x 125 mm high approx. Cylinder Mould, steel, internal diameter 50 mm x 125 mm high approx. Detachable collar approx. 50 mm in height. Base, cylinder, diameter 50mm x 75 mm high. Temporary support (Split collars held on a pair of tongs) to hold the mould on the bottom of the base. Frame of two steel rods, a base plate and a cross member having a semi-circular notch which guides the hammer during compaction. It has a level for forcing the mould to the bottom of the base after moulding. Hammer, 2.6kg. with a 310 mm drop. Hammer, 4.89 kg. with 310 mm drop. Penetration rod 16 mm diameters with arrangement for mounting dial gauge. Guiding device which fits over the mould during testing and maintains the penetration rod in a vertical position. Soaking frame with perforated base and dial gauge holder. Annular weight, 550 gms. with perforated base and spacer. Ejecting plunger. Proving ring, high sensitivity, capacity 1000 kg. with calibration chart and carrying case. Dial gauge graduated 0.0002 mm., range 5 mm.
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IOWA BEARING VALUE APPARATUS - (IBVA-01)
Russian