Objective: For assessment of the specific gravity of specified specimen of fine and coarse aggregates. Specific gravity of coarse aggregate Apparatus An equilibrium or scale of volume of minimum 3 kg, decipherable and precise to 0.5 g and it has to be of such shape and kind that it allows the basket holding the specimen […]
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Objective: For assessment of toughness property of aggregates for the concrete construction Tools and Equipment Impact Testing Machine Description of Machine Pendulum impact Testing Machine basically comprises of the strong frame structure, the sample sustenance along with the measuring and computing dial. The pendulum shaft is connected in the anti-friction bearings. After that, the pendulum […]
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Objective: To assess the properties and behavior of the sand grains under different percentage of moisture content Apparatus 250 ml measuring cylinder, a weighing balance etc. Procedure (i) First of all take 500gm (W1) of the aggregate. (ii) Put the specimen in an oven in a horizontal tray at a very temperature of 100°C-110° C […]
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Objective: For the assessment of the aggregate crushing value of coarse aggregate. The aggregate crushing value provides a subjective measure of the resistance of the aggregate crushing in the pressure of the progressively smeared compressive load. When the aggregate crushing value is 30 or greater the outcome can be irregular and in those kind of […]
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The grading limit for single-sized aggregates: Percentage passing for single sized aggregates of nominal size(mm) 63 mm 40 mm 20 mm 16 mm 12.5 mm 10 mm 80 mm 100 – – – – – 63 mm 85 – 100 100 – – – – 40 mm 0 – 30 85 – 100 100 – […]
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Objective: (i) To assess the impact value of the road aggregates; (ii) To evaluate their appropriateness in road construction on the foundation of impact value. Apparatus: The apparatus as per IS: 2386 (Part IV) – 1963 includes the following: (i) A testing machine with the weight range of 45 to 60 kg and consisting of […]
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