Mix Proportion

Abstract

Lightweight aggregate concrete differs from the normal weight concrete because of its porous nature and lower strength. This fact is reflected on most of the properties; for example, on physical and mechanical behaviors. Normally all concrete types are designed according to what concrete is sought. The properties of lightweight aggregate concrete determine the type of lightweight concrete to be produced. When most of the lightweight aggregate, more or less, is manufactured by the use of industrial methods, the demands of the market control the type as well as the accessibility of the raw materials. There are many ways or methods of designing lightweight aggregate concrete. First the structure for which the concrete will be used has to be decided, and then the accessibility of different types of lightweight aggregate and the price restraints need to be known. In calculating the optimal solution for the strength and density of the concrete at the start of the mix design process, the results are dependent on the strength, density, and size of the available lightweight aggregate.