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Category : Concrete

Concrete is a mixture of cement, sand, coarse aggregates and water. The properties of concrete such as performance, strength, and durability, their types such as high strength, prestressed, fresh, hard, Ready mix, SCC, thier special types are discussed here.

CONCRETE- SUPER STRUCTURE

RCC COLUMNS Materials and Machinery usedBatching plant.Transit mixerConcrete pumpVibratorsChute and C I Pipes.ScopeMarking the columnsPlacing the reinforcementForm work for columnsPlacing the concreteErection of ColumnThe size of column to be marked and checkedForm work consists ...

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CARBON FIBRE REINFORCED POLYMERS

The main impetus for development of carbon fibres has come from the aerospace industry with its need for a material with combination of high strength, high stiffness and low weight. Recently, civil engineers and construction industry have begun to realize ...

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FIBRE REINFORCED POLYMER

An FRP composite is defined as a polymer that is reinforced with a fibre. The primary function of fibre reinforcement is to carry load along the length of the fiber and to provide strength and stiffness in one direction. FRP ...

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COMPACTION FACTOR TEST

AIM To study the workability of concrete APPARATUS Compaction factor apparatus’ trowels, hand scoop (15.2 cm long), a rod of steel or other suitable material (1.6 cm diameter, 61 cm long rounded at one end ) and a balance. SAMPLING Concrete mix (M15) is ...

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CIRCULAR PRESTRESSING

Circular Prestressing” is employed to denote the prestressing of circular structures such as pipes and tanks where the prestressing wires are wound in circles. In contrast to this term, “linear prestressing” is used to include all other types of prestressing, ...

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CRACKING IN WALLS

There are cracks in all buildings, some minor and insignificant, some requiring expensive repairs and in some extreme cases the only solution is total demolition of the building.This article is intended to put ...

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RECYCLED AGGREGATE CONCRETE

To obtain good quality concrete using recycled aggregate it is necessary to follow the minimum requirements defined by the respective Building Standards. Acceptable properties of aggregates are an elemental base for concrete quality, however adequate mix proportions and concrete production ...

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FIRE PROOF CONCRETE

At the high temperatures experienced in fires, hydrated cement in concrete gradually dehydrates, reverting back to water (actually steam) and cement. This results in a reduction of strength and modulus of elasticity (stiffness) of concrete. In some fires, spalling of ...

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REACTIVE POWDER CONCRETE

REACTIVE POWDER CONCRETE • A composite material & ultra high strength with mechanical properties. • Mixture of fiber reinforced, super plasticized, silica fume, cement & quartz sand with very low ...

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