Development of Ultra High Strength Concrete Using Puntke Method of Particle Packing

Abstract

Ultra high strength concrete is a new kind of concrete whose strength is more than the conventional concrete. Nowadays it has been used in heavy constructions, high rise buildings, long span bridges etc. UHSC is not very different from conventional concrete, although it contains cement, mineral admixtures, superplasticizer, and steel fibers (if any). These mineral admixtures can be pozzolonic or cementitious such as Fly Ash, Rice Husk Ash, Metakaolin, Silica fume, ultrafine slag etc.These mineral admixture’s particle size is less than the particle size of cement, therefore they fill the voids in between the cement grains and make concrete more dense. Therefore with cement replacement, cost of cement decreases, also replacement of cement can lowers the carbon production to the environment. Therefore UHSC is a new advancement in concrete industry which can build structures which have high strength, tough and durable. Particle packing, flow properties of this concrete is better than the conventional concrete. The objective of the research is studied here and the procedure for that is also described briefly.UHSC has been able to produce compressive strength ranging from 150MPa-200MPa and above.