A) Tensile stressB) Compressive stressC) Shear stressD) No stress Explanation: As per theory of thermal stresses, when a body is restricted from free expansion or contraction, it develops internal stresses when subjected to change in temperature. If a constrained part is heated, it tends to expand. But restriction to movement causes development of compressive stresses…
Sieve Analysis is a common method adopted to measure the grain size distribution of an aggregate which is termed as gradation. It is often used in civil engineering and material testing field. This analysis can be done both in fine and coarse aggregates. Aggregates having mean grain size which are less than 4.75 mm are…
In civil engineering, tests on aggregates are crucial to ensure the quality and suitability of materials used in construction projects. Aggregate is defined as a granular material, typically consisting of sand, gravel, or crushed stone, used in construction as a key ingredient in concrete and bituminous mixes. The properties and quality of the aggregate significantly…
The soundness test is a critical standard test performed on both fine and coarse aggregates to determine their resistance to disintegration when exposed to weathering action. This test, also called the sulfate soundness test, aims to simulate the effects of repeated wetting and drying as well as freezing and thawing cycles that aggregates undergo after…
Procedure Aggregate Impact Value (AIV) = B/A x 100 Where B = weight of aggregate passing through 2.36 mm sieve A = weight of the oven – dried sample Note AIV should not be more than 45% for use in concrete other than wearing surfaces, and 30% for concrete used for wearing surfaces such as…
Aggregate sieve analysis test is a method of determining the particle size distribution of aggregate samples in concrete technology practice. It is used to classify into different groups based on their grain size and shape. Sieve analysis of coarse aggregate is a crucial process in determining the particle size distribution and quality of aggregates used…