WHAT IS MORTAR part-1

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What is mortar:-

Building mortar is defined as a mixture of Cement, Sand and Water.Mortar is similar to Connect but it doesn't contain coarse Aggregate.Mortar are used for filling joints as a binder in stone and brick masonry is called Mortar. as shown in fig below

Bulking of Sand:-

In the case of aggregate there is another effect of the presence of moisture viz.bulking  which is an increase in the volume of given  mass of sand (Fine Aggregate)Caused by the films of water pushing the sand partical a parts.For a moisture content of about 5-8% this increase of volume my be as much as 20-40% depending upon the grading of sand.
As shown in fig below.


Classification of Mortar:-

Mortar are classified in the basis of the following:
                 1. Bulk density
                 2. Kind of binding materials
                 3. Nature of application
                 4. Special mortar

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