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Behaviour of Concrete in Extreme Fire

The behavior of concrete in extreme fire is dependent on the composition and properties of the concrete structure. The type of aggregates used, the mix design, the moisture condition, and age are the factors that govern the behavior of concrete ...

Effect of Air Entrainment on Concrete Strength

Air entrainment affects compressive strength of concrete and its workability. It increases the workability of concrete without much increase in water-cement ratio.Compressive strength of concrete is inversely proportional to workability of concrete. When workability of concrete increases, its ...

Factors Affecting Strength of Concrete

Factors Affecting Strength of Concrete Concrete strength is affected by many factors, such as quality of raw materials, water/cement ratio, coarse/fine aggregate ratio, age of concrete, compaction of concrete, temperature, relative humidity and curing of concrete. Quality of Raw Materials Cement: Provided the ...

DESIGNED CONCRETE SPECIFICATIONS

Designed concrete are those for which the producer is responsible for selecting the mix proportions to meet the required performance as communicated by the specifier. Therefore it is essential that the specifier, in compiling the specification, takes account of: ...

Properties of Hardened Concrete

Properties of Hardened Concrete Fully cured, hardened concrete must be strong enough to withstand the structural and service loads which will be applied to it and must be durable enough to withstand the environmental exposure for which it is intended.When concrete ...

Different Properties of Fresh Concrete for Construction Works

Fresh concrete has different properties which are required for construction of concrete structures at site. The most important properties of fresh concrete are discussed. Properties of Fresh Concrete for Construction Works Workability of Concrete Concrete workability is the relative ease with which a ...

CONCRETE CREEP

CONCRETE CREEP Creep is defined as the long term deformation under a sustained load. Water within the hardened cement paste is forced to more as a result of the applied load. This movement of moisture is the primary cause ...