The Brinell hardness test is an optical testing method for samples with coarse or inhomogeneous grain structure. This is the best test method for achieving the bulk or macro-hardness of a material, particularly those materials with heterogeneous structures. The difference ...

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## Verification of Clerk Maxwell’s Reciprocal Theorem

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 structure, ...

## Spring Material Test (Modulus of Rigidity)

Modulus of rigidity is the measurement of the stiffness of spring material or its elastic ability. The modulus of rigidity of a spring material varies as a function of chemical composition, cold working, and degree of aging. Apparatus Required Spring ...

## Torsion Pendulum Test on Metal Wire

Modulus of Rigidity is the coefficient of elasticity of wire for a shearing force. In simple words, rigidity modulus of a metal wire is a measurement of the capability of a material to resist deformation when external tangential (parallel to the surface) force ...

## Requirements of Concrete Admixtures for use in Construction

Admixture is a material that is used as an ingredient for the preparation of concrete, and is added to the batch immediately prior to or during mixing materials (ACI 212.R-10). The purpose of blending admixtures is to improve fresh or ...

## Properties of Aggregates and its Values for use in Construction

Properties of Aggregates and its Values for use in Construction Properties of aggregates such as bulk density, specific gravity, voids, water absorption and its values are presented in this article. 1. Aggregates: Bulk Density, Specific Gravity and Voids Bulk Density ...

## Grading of Aggregates and Grading Limits

Grading of aggregates are determination of particle size distribution of aggregates. Grading of aggregates is an important factor for concrete mix design. These affect the concrete strength as well as durability. Proper grading is important for concrete construction. Following tables ...

## PRODUCTION OF COLOURED FINISHES WITH WHITE CEMENT

PRODUCTION OF COLOURED FINISHES WITH WHITE CEMENT Colours Desired Commercial Names of Colours Approx. Qty required (kg per bag of cement) Light Shade Medium Shade Greys, blue-black and black Lampblack*, or carbon black* or black oxide of manganese* or mineral ...