conclusion for gradation
Answers
Explanation:
Aggregate are the important constituent in concrete. They give body to concrete, reduce shrinkage and affect economy. Earlier, aggregate were considered chemically inert but now it has been recognized that some of the aggregate are chemically active and also certain aggregates exhibit chemical bond at the interface of aggregate and paste. The mere fact that they occupy 70-80% of volume of concrete, their impact on various characteristics of concrete is undoubtedly considerable along with its gradation. The depth of range of studies that are required to be made in respect of aggregate to understand their widely varying effect and influence on properties of concrete such as compressive strength, durability, workability, shrinkage, density etc. cannot be underrated. The emphasis is given on the gradation and type of aggregate which influence the properties effectively. The grading curves are studied in detail to know the behaviour of coarse as well fine aggregate as properties of concrete.
Gradation is a method of leveling the land by means of moving factors like winds, rivers, sea and waves.
Explanation:
- It is a natural process that usually takes place when agents such as gravity, running water, waves, wind, and glaciers eventually changing the surface features of the earth which includes process includes erosion, transportation, and deposition of earth materials.
- The two factors that bring up-gradation are internal and external forces. The former includes all those forces that act from within the earth's surface like volcanoes while the later involves winds etc which act over the surface. This process brings a complete change to the soil surface.
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