Reinforced concrete beams are structural elements that designed to carry transverse external loads. The loads cause bending moment, shear forces and in some cases torsion across their length. Moreover, concrete is strong in compression and very weak in tension. Thus, ...
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Reinforcement Detailing in Beams According to IS 456-2000
Reinforcement detailing in beams Beam carries transverse external loads that cause bending moment, shear forces and in some cases torsion Concrete is strong in compression and very weak in tension. Steel reinforcement counter act tensile stresses in reinforced concrete beams. ...
Fineness Modulus Method of Concrete Mix Design
Fineness Modulus Method of Concrete Mix Design The index number, which describes the relative sizes of coarse and fine aggregates, is called as fineness modulus (FM). Fineness modulus is determined separately by sieving coarse and fine aggregates through the following ...
Reinforcement Detailing of Reinforced Concrete Slabs
Reinforcement detailing of a slab is done based on its support conditions. Slab may be supported on walls or beams or columns. Slab supported directly by columns are called flat slab. Slab supported on two sides and bending takes place ...
Permeability Test on Concrete Structures
When concrete is permeable it can cause corrosion in reinforcement in presence of oxygen, moisture, CO2, SO3- and Cl– etc. This formation of rust due to corrosion becomes nearly 6 times the volume of steel oxide layer, due to which ...
MEASURING LOSS OF PRESTRESS IN PRESTRESSED CONCRETE
Instruments for measuring loss of prestress in prestressed concrete: The initial pre-stressing force applied to the concrete element reduces due to elastic shortening of the concrete, anchorage losses, frictional losses etc. The pre-stressing force further reduces with the passage of ...
Mix Design of Roller Compacted Concrete
Mix design proportioning methods for Roller Compacted Concrete RCC: Mix design proportioning methods for no slump concrete applicable for Roller Compacted Concrete. Materials Used in RCC mix design a) Cementitious materials: Cement content is generally low (typically 70 to 130 ...
Standard Codes for Concrete Admixtures
As per ACI 212.3R-10, Concrete admixture is a material other than water, aggregates, hydraulic cement, and fiber reinforcement used as an ingredient of concrete or mortar, and added to the batch immediately before or during its mixing. Concrete admixtures are ...