Before getting straight to the topic, let’s have a small discussion regarding aggregates. Did you ever wonder, why aggregates are typically used in construction and engineering projects? Have you asked yourself why is it necessary to use aggregates and what is their importance? What happens if at all aggregates are not available in a particular…
RCC stands for reinforced cement concrete, which means that concrete is reinforced with steel bars to increase its strength and durability. Concrete is strong in compression while a minimum longitudinal reinforcement is provided in the column to assist tensile stress. Column is an important component of RC structure. It may be defined as a member…
Specific gravity is defined as the ratio of weight of the aggregate to the weight of an equal volume of water at a specified temperature. Procedure Where, A = Weight in gm of the saturated aggregate in water (A1- A2) B = Weight in gm of the saturated surface dry aggregate in air C =…
Procedure (Los Angeles Abrasion test) Specified Abrasive Charge Note The percentage of wear should not be more than 16% for concrete aggregates.
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…
Procedure Aggregate crushing value (ACV) = B/A x 100 Where B = weight of aggregate passing through 2.36 mm sieve A = weight of the surface dry sample taken in mould Note ACV should not be more than 45% for use in concrete other than wearing surfaces, and 30% for concrete used for wearing surfaces…