Concrete is a hetrogeneous material composed of cement, fine aggregates (sand) and coarse aggregates mixed with water.
Various tests such as cube test, split tensile test etc are performed on the concrete to assess its properties. These tests are done on a specially made specimen which may not represent the actual structure. These tests required pre-planning. The specimen get destroyed in the process. To overcome these problems, Non destructive tests have been […]
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Concrete is a heterogeneous and hardened mass obtained from a mixture of cement, sand, coarse aggregate and water, in a certain proportion. The grade of concrete varies greatly in accordance with the changing proportion of its constituent materials. The proportion and the ratio, in which the materials should be mixed together to obtain a certain
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Ferrocement is a composite material of mortar and reinforcement such as light steel fabrics and meshes and is used to form thin section. Ferrocement is a form of reinforced mortar that is embedded with closely spaced multiple layers of wire mesh. The mesh is generally metallic or non-metallic. The ferrocement is widely used to construct
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Shotcrete is a method of applying concrete or mortar pneumatically projected or sprayed with the help of nozzle having high velocity on the prepared surface. Shotcrete is also called Gunite or sprayed concrete. It is typically reinforced by steel, rods, steel mesh or fibres. It is placed and compacted or consolidated with the force with
Polymer concrete is a type of concrete that replaces cement by polymer as a binder. Sometimes, the polymer is used in addition to Portland cement to form Polymer cement concrete (PCC) or Polymer Modified Concrete(PMC). Polymer concrete composites have a unique combination of properties depending on the formulation. These include rapid curing at ambient temperatures
The manufacturing of concrete is broadly carried in six steps, which when sequentially followed, will produce a properly proportioned and complete mixed concrete. Each step has its own significance on the contribution of different properties, in the finished product. Different types of the quality control mechanism and testing are involved in each phase, to make
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Textile Reinforced Concrete (TRC) is an innovative technology in concrete filed in which the steel reinforcement is replaced by textile reinforcement. These fibres are mesh-like structures made up of glass, polypropene, jute, carbon etc. Textile Reinforced Concrete is commonly used in lightweight structures such as precast members, shells, road screens, and faded elements. The prime
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Admixtures are defined as the chemicals which are added to the concrete other than cement, aggregate, and water to modify its properties during or before the mixing of concrete. The properties which are commonly modified are the rate of hydration, setting time, and workability of concrete. Admixtures help to make concrete suitable for the
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