Author: haroonkhan

Cement concrete is prepared to a plastic consistency by adding water and this hardens on curing. Plastic concrete is called fresh concrete, which is a freshly mixed material that can be moulded into any shape. The concrete formed to the required shape and cured is said to be hardened concrete. The properties of the concrete, in both…

Concrete is an important construction material consisting of ingredients that are inert materials, viz., coarse and fine aggregates and binding materials, viz., cement or lime. Cement concrete is widely used as plain concrete, reinforced concrete, pre-stressed concrete and precast concrete members. Properties of coarse and fine aggregates and the quality of water to make quality…

The concrete used for the casting of various structural components with or without reinforcement is called precast cement concrete. Fresh concrete is placed and compacted in moulds made for different structural units. After setting and curing they are removed from moulds and used.

cThis concrete has less density compared to the conventional concrete. Light-weight concrete may be prepared (i) by omitting the fine aggregate, (ii) by using light-weight concrete or (iii) by aerating concrete. The concrete prepared by omitting the fine aggregate is called no-fine concrete. It has low drying shrinkage. This is used for cast-in-situ external load-bearing walls,…

Here high tensile steel wires are used as reinforcement instead of mild steel bars. High tensile steel wires are stretched initially to the desired level and concrete is placed. After setting and completion of curing, the concrete is put into use. As the steel wires are initially stretched, the concrete so casted is known as…

The cement concrete provided with steel reinforcement for taking on tension, bending, torsion, fatigue, etc., is referred to as Reinforced Cement Concrete (RCC). The steel used in RCC works are: mild steel bars, medium tensile steel bars, hot-rolled deformed bars, cold twisted bars, hard-drawn steel wire fabric or rolled steel. It is used in various…

It is the simplest form of concrete made with cement, sand, pebbles or crushed rock and water. It is used for a variety of works where the structural members are subjected to compression. Simple foundations to mighty dams may be constructed with plain cement concrete.

Different types of cement concrete are discussed along with their uses.

The properties of cement concrete are as follows:

Concrete can be easily prepared by mixing binding material (lime or cement), fine aggregate (sand) and coarse aggregate (crushed stone or brick) and water in the required proportion. The fine aggregates fill the voids of coarse aggregate, and voids of fine aggregate are filled with lime/cement and also the lime/cement reacts with water and binds…