Author: workhouse123
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FUNCTIONS OF INGREDIENTS OF MORTAR
As discussed earlier, the ingredients of mortar are: 7.4.1 Functions of Cementing Materials The primary requirement of cementing materials is to provide strength and durability to the structure. For cement mortar mostly Ordinary Portland Cement is used. However, for special types of works other cements may be used appropriate to the work. Cement performs the…
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QUALITIES OF WATER FOR MORTAR
Water is used for construction purposes of Civil Engineering Works such as the construction of earth structures, highway construction, mortar and concrete works, etc. Although water is an important constituent of construction materials, it does not receive the attention due to it particularly in the construction of earth structures and highway construction. However, due importance…
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INTRODUCTION
The cementing materials discussed in the previous chapters can not be used directly as a construction material unless they are combined with some other inert material like aggregates. Thus, a combined material formed by mixing intimately a binding material (cement or lime) with a fine aggregate (sand or surkhi) in a certain proportion and with an…
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TYPES OF BRICKS
There are different kinds of bricks which differ from the conventional building bricks with respect to their shape, specifications and special purpose for which they are made. Those bricks are discussed in the subsequent sections. 3.8.1 Specially Shaped Bricks 1. Bull-nosed Bricks A brick moulded with a rounded angle is termed as the bull nose.…
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TESTS ON BRICKS
Before recommending bricks for construction work, their suitability is to be assessed by conducting the following tests: The sampling and testing of bricks are carried out as per IS: 3495 – 1992 and are as shown in Table 3.2. Table 3.2 Sampling and testing of bricks Source: IS: 3495–1992. 3.7.1 Compressive Strength Test As per norms, five…
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CLASSIFICATION OF BUILDING BRICKS AND USES
Bricks are broadly classified into two broad categories as follows: Sun-dried bricks also called un-burnt or katcha bricks, and these are dried directly under the sun after the process of moulding. These bricks are of inferior quality and are used for the construction of temporary and cheap structures. Such bricks should not be used in areas…
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SELECTION OF SITE FOR BRICK EARTH
he following factors are to be considered in the selection of a site for brick earth: 3.4 MANUFACTURING OF BRICKS The manufacturing of bricks involves four stages, viz., preparation of soil, moulding, drying and burning. 3.4.1 Preparation of Soil 1. Removal of Top Soil The preparation of soil involves first renewal of loose materials at…
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CONSTITUENTS OF BRICK EARTH
The main constituents of good brick earth are alumina, silica, lime, oxide of iron and magnesia. 3.2.1 Functions of Constituents of Brick Earth 1. Alumina This is the main constituent of every kind of brick earth. This imparts plasticity to the earth so that it can be moulded. If alumina is present in excess, it…
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INTRODUCTION
Bricks have been in use since the dawn of civilization. In the initial stages they were used as sun-dried bricks. Burnt bricks have succeeded sun-dried bricks. It has been reported that bricks have been used to build monuments in different parts of the world. Refined brick making and burning techniques have remarkably improved the quality…