لخّصلي

Concrete is the basic engineering material used in most of the civil engineering structures.Use of mineral admixtures like fly ash, slag, metakaolin and silica fume have revolutionized the concrete technology by increasing strength and durability of concrete by many folds.Concrete mix design is the science of deciding relative proportions of ingredients of concrete, to achieve the desired properties in the most economical way.Concrete like other engineering materials needs to be designed for properties like strength, durability, workability and cohesion.With advent of new generation admixtures, it is possible to achieve higher grades of concrete with high workability levels economically.

Concrete is the basic engineering material used in most of the civil engineering structures. Its popularity as basic building material in construction is because of, its economy of use, good durability and ease with which it can be manufactured at site. The ability to mould it into any shape and size, because of its plasticity in green stage and its subsequent hardening to achieve strength, is particularly useful.
Concrete like other engineering materials needs to be designed for properties like strength, durability, workability and cohesion.
Concrete mix design is the science of deciding relative proportions of ingredients of concrete, to achieve the desired properties in the most economical way.
With advent of high-rise buildings and pre-stressed concrete, use of higher grades of
concrete is becoming more common. With advent of new generation admixtures, it is possible to achieve higher grades of concrete with high workability levels economically. Use of mineral admixtures like fly ash, slag, metakaolin and silica fume have revolutionized the concrete technology by increasing strength and durability of concrete by many folds. Mix design of concrete is becoming more relevant in the above-mentioned scenario.
However, it should be borne in mind that mix design when adopted at site should be implemented with proper understanding and with necessary precautions.