Measurement of Air Content in Concrete Air content of concrete is measured by the pressure air measurement method which is based on the principles of The Boyle’s law. The Boyle’s law states that the volume of the gas is inversely ...
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Shrinkage is an inherent property of concrete. The shrinkage in concrete can be defined as the volume changes observed in concrete due to the loss of moisture at different stages due to different reasons.
Various factors for selection of reinforced concrete over other construction materials such as masonry, steel and timber such as properties and advantages of reinforced concrete.
Concrete structures are exposed to fire and high temperature during life service which creates changes in concrete properties detrimentally causing failure.
Flexural test on concrete based on the ASTM standards are explained. Differences if present in specification or any other aspects of flexural test on concrete between ASTM standard, Indian standard and British standard are specified.
Concrete as a construction material are grouped as normal concrete or high strength concrete based on its compressive strength. Difference and properties of normal and high strength concrete is discussed.
Fire resistance of concrete is well appreciable. Fire resistance of concrete as a material and structures and methods to improve fire resistance are discussed.
Presence of impurities in water for concrete mix leads to decrease in structural properties of concrete such as strength and durability to a large extent.