Category: 3. Mortar

These mortars contain both cement and lime as essential ingredients plus fine aggregate which is usually sand. The addition of cement to lime mortar considerably improves the quality of the mortar, particularly in terms of its workability, setting time, hardening and ultimate strength. Since gauged mortars contain cement as an essential ingredient, it is important…

For small jobs, manual mixing of mortar is generally practiced and for large-scale construction where large batches of mortar are required, mortar mill mixing is indispensable.

It is of utmost importance that the mortar ingredients are mixed as thoroughly as possible. Two common methods adopted are manual mixing and mortar-mill mixing. Manual mixing: This is done on a watertight platform made of masonry or in a tank of suitable dimensions. A spade is the main tool needed. Measured volumes of slaked…

The main purpose of proportioning is to fix such proportion of raw materials which will result in mortar of desired quality, i.e. required strength, durability and finish. Since mortars used in different construction situations are not subjected to the same forces and conditions, no single rule for mortar proportions can be formulated. The widely recommended…

Lime, sand, lime, pumice, ash and cinder are the major raw materials commonly used in the manufacture of lime mortar. Lime: All types of lime can be used to make mortar, although not all lime mortars can be used for different situations. The main types of lime, viz., coarse lime and hydraulic lime, produce mortars…

Following are the important steps in the manufacture of lime mortar: selection of raw materials, ratio of raw materials and mixing of raw materials.

Lime mortars are defined as mixes of lime with fine sand and/or pozzolanic materials like surkhi, pumice, ash and cinder in water.

The following major types of mortar are recognized based on the type of cementing material used in its manufacture: lime mortar, cement mortar and gauged mortar are the most common types.

Pointing and plaster work on exposed masonry surfaces.Creating a uniform and soft bed layer for building units.For making pipe joints. To improve the general appearance of the structure.Preparation of molds for coping, corbel, cornice etc.Acting as a matrix or cavity for holding coarse aggregates etc.Equally distributing the load bearing weight from the upper layer to…

The term mortar is used to denote a paste made by mixing a binding material such as cement or lime and a fine aggregate such as sand with the required amount of water. It is used to bond masonry or other structural units.