Category: Mortar

Selection of mortar for particular civil engineering purposes are tabulated in Table 7.2. Table 7.2 Selection of mortar for different purposes

In this case, it should be ensured that the lime is slaked well. Then the lime is mixed with sand and ground well to form an intimate mixture. Water is then added and mixed well to form a regular lime mortar. The lime mortar is transferred to a mechanical mixer to which the required cement… Continue reading Preparation of Lime–Cement Mortar

Cement mortar is mixed by hand for small construction purposes, while large quantities of cement mortar may be mixed by a machine. 1. Hand Mixing Sand is measured in boxes, and the specified quantity of sand is spread first. Cement is measured by the weight of bags or by considering the volume of 0.035 m3.… Continue reading Preparation of Cement Mortar

Ordinary lime mortar and plaster are made by grinding lime with sand. There are three methods of preparing lime mortar. In the first method, a dry mixture of lime and sand are placed in a trough or on a platform in the specified proportion. The required quantity of water is sprinkled over the mixture in… Continue reading Preparation of Lime Mortar

Preparation of lime mortar and cement mortar have different procedures, which are discussed in subsequent paragraphs.

It is a heavy type of mortar, which is obtained from crushed heavy rocks, and suitable admixtures are added to get the required property. A plastering coat of this mortar is applied to the walls and ceiling of X-ray cabinets.

This type of mortar is formed by compositioning Portland Cement, lime, gypsum, slag, etc. The crushed aggregates are selected from light-weight porous materials such as pumice, cinders, etc.

It is a special type of mortar possessing properties of high homogeneity, water resistance, predetermined setting time and the ability to form solid and water-proof plugs. This property of the mortar is useful for plugging cracks or voids of rocks, resistance to subsoil water pressure, etc., in oil wells. Different kinds of packing mortars are… Continue reading Packing Mortar

It is obtained by mixing materials like saw dust, wood powder, asbestos fibres, jute fibres, etc., to the lime mortar or cement mortar. This type of mortar is used for sound-proof and heat-proof construction.

It is obtained by adding aluminuous cement to the finely ground powder of fire bricks. This is fire-resistant mortar, which can be used with fire bricks for furnace lining, fire places, etc.