Various standard codes for testing of construction materials are specified by ASTM international, Eurocodes, IS Codes, BS Codes, etc. These codes specifies testing procedure and methods for concrete, masonry, aggregates, steel, soil and other building materials. Codes and standards are ...
Cement
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Role of Gypsum in Cement and its Effects
Gypsum is a mineral and is hydrated calcium sulphate in chemical form. Gypsum plays a very important role in controlling the rate of hardening of the cement, so its is generally termed as retarding agent of cement. It is mainly used ...
Fineness Modulus of Cement by Dry Sieving
The Fineness modulus of cement is an empirical figure obtained by adding the total percentage of the sample of an aggregate retained on each of a specified series of sieves, and dividing the sum by 100. The proportion of cement of which ...
14 Uses of Sedimentary Rocks in Civil Engineering
Uses of sedimentary rock can be found in almost all buildings and public structures. This makes it substantially important construction material in civil engineering projects. The sedimentary rock is formed by the settlement and subsequent cementation of mineral or organic particles on the ...
Expansive Cement – Manufacture, Properties, Types and Uses
Expansive cement is special type of cement when mixed with water, which forms a paste that tends to increase in volume to a significantly greater degree than Portland cement paste after setting. The expansion of the cement mortar or concrete is ...
Hydrophobic Cement – Manufacture, Properties and Uses
As the name of the cement denotes, hydro means water and phobic means against. Hydrophobic cement is obtained by grinding portland cement clinker with a film-forming substance such as oleic acid in order to reduce the rate of deterioration when the cement is ...
Air-Entrained Cement – Manufacture, Properties and Advantages
Air-entrained portland cement is a special cement which has air bubbles introduced in the cement or concrete that provides the space for expansion of minute droplets of waters in the concrete due to freezing and thawing and protects from cracks ...
White Cement – Manufacture, Properties and Uses
White cement is same as that of grey Portland cement but the only differ is in the colour and fineness. This colour of this cement is determined by its raw materials and the process of manufacture. In this article we ...