California Bearing Ratio Apparutus
California Bearing Ratio Apparutus:
California Bearing Ratio test, (ordinarily called CBR test) is an experimental test created in California, the USA for deciding the Relative Bearing Ratio and development qualities under known extra charge weight of the base, sub-base and subgrade soils for the plan of streets, asphalts, and runways. The CSR test is utilized broadly in a choice of materials and control of subgrades.
The test can be performed in the laboratory on prepared samples or in-situ on location. It is important to appreciate that this test, being of an empirical in nature, is valid only for the application for which it was developed i.e., the design of highway base thickness.
Goal of California Bearing Ratio Apparatus:
To decide the California bearing proportion by leading a heap infiltration test in the research facility.
Need And Scope:
The california bearing proportion test is infiltration test implied for the assessment of subgrade quality of streets and asphalt. The outcomes got by these tests are utilized with the exact bends to decide the thickness of asphalt and its segment layers. This is the most broadly utilized technique for the plan of adaptable asphalt.
This guideline sheet covers the lab strategy for the assurance of C.B.R. of undisturbed and remolded/compacted soil examples, both in splashed and in addition unsoaked state.
Planning And Organization:
Equipment And Tool required.
1. Barrel-shaped form with inside dia 150 mm and tallness 175 mm, gave a separable expansion neckline 50 mm stature and a separable punctured base plate 10 mm thick.
2. Spacer plate 148 mm in dia and 47.7 mm in stature alongside handle.
3. Metal rammers. Weight 2.6 kg with a drop of 310 mm (or) weight 4.89 kg a drop 450 mm.
4. Weights. One annular metal weight and a few opened weights weighing 2.5 kg each, 147 mm in dia, with a focal gap 53 mm in distance across.
5. Stacking machine. With a limit of atleast 5000 kg and outfitted with a portable head or base that movements at a uniform rate of 1.25 mm/min. Finish with stack showing gadget.
6. Metal entrance cylinder 50 mm dia and least of 100 mm long.
7. Two dial gauges reading to 0.01 mm.
8. Sieves. 4.75 mm and 20 mm I.S. Sieves.
9. Miscellaneous apparatus, such as a mixing bowl, straight edge, scales soaking tank or pan, drying oven, filter paper and containers.
Available models:
Laboratory California Bearing Ratio TestApparatus, Motorised, Three speed (with GM Mould) (AIM 120 )
Laboratory California Bearing Ratio Test Apparatus, Motorised, Three Speed (with MS Mould) (AIM 120-MS )
Laboratory California Bearing Ratio Test Apparatus, Motorised with AIM-062E Load Frame four Speed (AIM-120-1)
Laboratory California Bearing Ratio Test Apparatus, Motorised, Four Speed with Mild Steel Mould (AIM-120-MS-3)
Laboratory California Bearing Ratio Test Apparatus, Motorised, Three Speed, Electronics (AIM 121 )
Laboratory California Bearing Ratio test apparatus, Motorised, Electronics with DAQ & GeoStar (AIM 121 -1 )
Laboratory California Bearing Ratio Test Apparatus, Electronic with AIM-062E Load Frame four speed (AIM-121-2)
Laboratory California Bearing Ratio Test Apparatus, Motorised, Electronics with AIM-062E Load Frame four speed and AIMIL Data Aquisition System & GeoStar (AIM-121-3)
California Bearing Ratio test, (ordinarily called CBR test) is an experimental test created in California, the USA for deciding the Relative Bearing Ratio and development qualities under known extra charge weight of the base, sub-base and subgrade soils for the plan of streets, asphalts, and runways. The CSR test is utilized broadly in a choice of materials and control of subgrades.
The test can be performed in the laboratory on prepared samples or in-situ on location. It is important to appreciate that this test, being of an empirical in nature, is valid only for the application for which it was developed i.e., the design of highway base thickness.
Goal of California Bearing Ratio Apparatus:
To decide the California bearing proportion by leading a heap infiltration test in the research facility.
Need And Scope:
The california bearing proportion test is infiltration test implied for the assessment of subgrade quality of streets and asphalt. The outcomes got by these tests are utilized with the exact bends to decide the thickness of asphalt and its segment layers. This is the most broadly utilized technique for the plan of adaptable asphalt.
This guideline sheet covers the lab strategy for the assurance of C.B.R. of undisturbed and remolded/compacted soil examples, both in splashed and in addition unsoaked state.
Planning And Organization:
Equipment And Tool required.
1. Barrel-shaped form with inside dia 150 mm and tallness 175 mm, gave a separable expansion neckline 50 mm stature and a separable punctured base plate 10 mm thick.
2. Spacer plate 148 mm in dia and 47.7 mm in stature alongside handle.
3. Metal rammers. Weight 2.6 kg with a drop of 310 mm (or) weight 4.89 kg a drop 450 mm.
4. Weights. One annular metal weight and a few opened weights weighing 2.5 kg each, 147 mm in dia, with a focal gap 53 mm in distance across.
5. Stacking machine. With a limit of atleast 5000 kg and outfitted with a portable head or base that movements at a uniform rate of 1.25 mm/min. Finish with stack showing gadget.
6. Metal entrance cylinder 50 mm dia and least of 100 mm long.
7. Two dial gauges reading to 0.01 mm.
8. Sieves. 4.75 mm and 20 mm I.S. Sieves.
9. Miscellaneous apparatus, such as a mixing bowl, straight edge, scales soaking tank or pan, drying oven, filter paper and containers.
Available models:
Laboratory California Bearing Ratio TestApparatus, Motorised, Three speed (with GM Mould) (AIM 120 )
Laboratory California Bearing Ratio Test Apparatus, Motorised, Three Speed (with MS Mould) (AIM 120-MS )
Laboratory California Bearing Ratio Test Apparatus, Motorised with AIM-062E Load Frame four Speed (AIM-120-1)
Laboratory California Bearing Ratio Test Apparatus, Motorised, Four Speed with Mild Steel Mould (AIM-120-MS-3)
Laboratory California Bearing Ratio Test Apparatus, Motorised, Three Speed, Electronics (AIM 121 )
Laboratory California Bearing Ratio test apparatus, Motorised, Electronics with DAQ & GeoStar (AIM 121 -1 )
Laboratory California Bearing Ratio Test Apparatus, Electronic with AIM-062E Load Frame four speed (AIM-121-2)
Laboratory California Bearing Ratio Test Apparatus, Motorised, Electronics with AIM-062E Load Frame four speed and AIMIL Data Aquisition System & GeoStar (AIM-121-3)
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