Description about mortar, classification, properties, tests & uses of mortar
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· Building mortar is define as a mixture of cement, sand and water. · Mortar is similar to concrete but it does not contain coarse aggregate. · Mortar are used for filing joints as a binder in stone and brick masonry Bulking of sand · In the case of aggregates there is another effect of the presence of moisture viz. bulking which is an increase in the volume of a given sand particle apart. for a moisture content of about 5-8 % depending upon the increase of volume may be as much as 20-40% depending upon the grading of sand . · Finer the materials more will be the increase in volume for a given moisture content. Classification of mortars · Mortars are classified on the basis of the following. (i) Bulk density (ii) Kind of binding materials (iii) Naturals of application (iv) Special mortars Properties of a good mortar The important properties of good mortar mix are mobility, place and wate