Posts Tagged ‘Lab Tests’

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FLASH AND FIRE POINT TEST

AIM: To determine the flash and fire point of bitumen APPARATUS: Pensky-Marten Closed Tester, Thermometer THEORY: Bituminous material leave out volatiles at high temperatures depending upon their grade. These volatile vapours catch fire causing a flash. The flash point is... (Continue reading)

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CALIFORNIA BEARING RATIO TEST

AIM: To determine the California Bearing Ratio value of the subgrade soil. APPARATUS: Loading machine-any compression machine can operate at constant rate of 1.25mm per minute can be used. Cylindrical moulds- moulds of 150mm diameter and 175mm height provided with... (Continue reading)

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SPECIFIC GRAVITY OF BITUMEN

SPECIFIC GRAVITY OF BITUMEN

AIM: To determine the specific gravity of given sample of bitumen APPARATUS: Pycnometer and balance THEORY: Specific gravity of bituminous material is defined as ratio of mass of given volume of substance to the equal volume of water, temperature of... (Continue reading)

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VISCOSITY TEST FOR CUTBACK BITUMEN

AIM: To determine the viscosity of bitumen using tar viscometer APPARATUS: Tar viscometer, cup, valve, receiver, thermometer etc. THEORY: Viscosity is the inverse of fluidity. The degree of fluidity at the application temperature greatly influences the ability of bituminous material... (Continue reading)

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SOFTENING POINT OF BIUMINOUS MATERIAL

AIM: To determine the softening point of bitumen/ tar. APPARATUS: (i) The ring and ball apparatus consisting of (a) Steel balls-two numbers each of 9.5 mm diameter weighing 3.5 ± 0.05 g. (b) Brass rings-two numbers each having depth of... (Continue reading)

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DUCTILITY OF BITUMEN

AIM: (i) To measure the ductility of a given sample of bitumen (ii) To determine the suitability of bitumen for its use in road construction. APPARATUS: The apparatus as per IS: 1208-1978 consists of (i) Briquette mould: It is made... (Continue reading)

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DOUBLE SHEAR TEST ON MILD STEEL

DOUBLE SHEAR TEST ON MILD STEEL

  AIM To determine the shear strength (ultimate shear stress) of the mild steel specimen supplied using double shear method. EQUIPMENT UTM, Shear attachment to the UTM, shear dies and Venire Calipers. THEORY AND PRINCIPLE Shear strength of the material... (Continue reading)

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IMPACT TEST

IMPACT TEST

AIM To study the toughness property of the materials EQUIPMENT Impact testing machine: DESCRIPTION OF MACHINE The Pendulum impact Testing Machine consists of the robust frame, the specimen support and measuring dial. The pendulum shaft is fitted in anti friction... (Continue reading)

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TENSION TEST ON STEEL ROD

TENSION TEST ON STEEL ROD

AIM To study the behavior of mild steel, tore steel and high tensile steel under tension and find out the Young’s Modulus, Ultimate strength, percentage elongation EQIPMENT UTM, Extensometer, scale Venire calipers, punching tools etc. DESCRIPTION OF MACHINE The machine... (Continue reading)

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VICKERS HARDNESS TEST

AIM To determine the Vickers Hardness number for the given specimen. EQUIPMENT Vicker’s hardness tester, pyramid indentor DESCRIPTION OF THE MACHINE The body of the machine is closed by covers and the mechanism inside the machine is thus protected from... (Continue reading)

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STRUT TEST

STRUT TEST

AIM To find the Euler’s buckling load of the strut. EQUIPMENT Strut Testing Apparatus, Venire Caliper Scale DESCRIPTION OF MACHINE The machine is so designed as to carry out tests on struts of various lengths, with ends either hinged or... (Continue reading)

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BENDING TEST ON WOODEN BEAM

BENDING TEST ON WOODEN BEAM

AIM To determine the Young’s Modulus E of wood and the Modulus of Rupture by conducting bending test. EQUIPMENT UTM, device for Appling load and scale THEORY AND PRINCIPLE For a simply supported beam with central loading, deflection under the... (Continue reading)

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STUDY OF UNIVERSAL TESTING MACHINE

INTRODUCTION Universal testing machine (UTM) is called so because of the versatility of its application. The following tests can be performed with it:- 1. Tension Test. 2. Compression Test. 3. Bending Test. 4. Hardness Test. DESCRIPTION OF UTM The Universal... (Continue reading)

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BRINELL HARDNESS TEST

BRINELL HARDNESS TEST

AIM To determine the Brinell Hardness number HB of the given specimen. EQUIPMENT Brinell hardness tester RAB-250, Brinell microscope and indentors (2.5mm and 5mm ball) DESCRIPTION OF MACHINE The Brinell Hardness Tester consists of a loading system, a main screw... (Continue reading)

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VERFICATION OF CLERK MAXWELL’S RECIPROCAL THEOREM

VERFICATION OF CLERK MAXWELL'S RECIPROCAL THEOREM

AIM To verify clerk- Maxwell’s Reciprocal Theorem and to determine the Young’s modulus of beam arterial of the apparatus EQUIPMENT REQUIRED Clerk-Maxwell’s reciprocal’ theorem apparatus Tire weight Dial gauge THE THEOREM Clerk-Maxwell’s reciprocal theorem state that in a linearly elastic... (Continue reading)

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SPRING TEST

SPRING TEST

AIM To determine the modulus of rigidity (Shear modulus) of the material of the spring. EQUIPMENT I. Spring Testing Machine, 2. Dial gauge. DESCRIPTION OF THE MACHINE The spring testing machine has two uprights fixed to a rigid base and... (Continue reading)

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