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Posts published in “Concrete”

Plain concrete, commonly known as concrete, is an intimate mixture of binding material, fine aggregate,
coarse aggregate and water. This can be easily moulded to desired shape and size before it looses
plasticity and hardens. Plain concrete is strong in compression but very weak in tension. The tensile
property is introduced in concrete by inducting different materials and this attempt has given rise to
RCC, RBC, PSC, FRC, cellular concrete and Ferro cement. In this chapter proportioning, mixing,
curing, properties, tests and uses of plain concrete is dealt in detail. The other improved versions of
concrete are explained and their special properties and uses are pointed out.

Copper

It is a naturally available metal in the form of ores which contain small amount of iron and sulphur. After removing impurities, it is processed…

Ferro-Cement

The term ferro-cement implies the combination of ferrous product with cement. Generally this combination is in the form of steel wires meshes embedded in a portland…

Cellular Concrete

It is a light weight concrete produced by introducing large voids in the concrete or mortar. Its density varies from 3 kN/m3 to 8 kN/m3 whereas…

Fibre-Reinforced Concrete (FRC)

Plain concrete possesses deficiencies like low tensile strength, limited ductility and low resistance to cracking. The cracks develop even before loading. After loading micro cracks widen…

Prestressed Concrete (PSC)

Strength of concrete in tension is very low and hence it is ignored in R.C.C. design. Concrete in tension is acting as a cover to steel…

Reinforced Brick Concrete (RBC)

It is the combination of reinforcement, brick and concrete. It is well known fact that concrete is very weak in tension. Hence in the slabs, lintels…

Reinforced Cement Concrete (R.C.C.)

Concrete is good in resisting compression but is very weak in resisting tension. Hence reinforcement is provided in the concrete wherever tensile stress is expected. The…

Uses of Concrete

1. As bed concrete below column footings, wall footings, on wall at supports to beams 2. As sill concrete 3. Over the parapet walls as…

Desirable Properties of Concrete

Appropriate quality and quantity of cement, fine aggregate, coarse aggregate and water should be used so that the green concrete has the following properties: (a) Desired…

Tests on Concrete

The following are some of the important tests conducted on concrete: 1. Slump test. 2. Compaction factor test. 3. Crushing strength test. Slump Test This…