Gypsum is a mineral and is hydrated calcium sulfate in chemical form. Gypsum plays a very important role in controlling the rate of hardening of the cement.
Video Below: This video is also available on YouTube here: If you only want the instructions for mixing Plaster of Paris please go directly to the video.
This section defines many useful terms needed when learning about concrete and cement
Concrete strength. Many factors influence the rate at which the strength of concrete increases after mixing. Some of these are discussed below. First, though a couple ...
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Types of Cement, their Composition and Uses. The following are the types of cement that are in practice: Rapid Hardening Cement; Quick setting cement
Admixtures, Additives and Water control some property e.g. set controlling gypsum stearate added during the grinding of cement; other parts of the construction ...
Iron ore pellets and Pelletizing processes. Pelletizing is a process that involves mixing very finely ground particles of iron ore fines of size less than 200 mesh ...
3.7 The fineness and particle size distribution of Portland cement. The final step in the production of cement is to grind the clinker pellets (and added gypsum ...
A cement is a binder, a substance used in construction that sets, hardens and adheres to other materials, binding them together. Cement is seldom used solely, but is ...
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LAFARGE Timeline: history of Lafarge 1833 The beginning. The story of the world leader in building materials began in the Ardèche region, at a place called ...
Bonding Fresh Concrete to Existing Concrete Surfaces . Overlays or patching materials of new Portland Cement Concrete (PCC), terrazzo, mortar, grout and extruded ...
How to grout wall tiles and floor tiles; Guidance on the best way to grout ceramic and quarry tiles including information on what gap you should have between tiles ...
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The Beginnings of Portland Cement. Portland cement is one of many materials that can be made by making a finely-ground mixture of limestone and clay, and burning the ...
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Summarises the hydration process of Portland cement and describes the principal cement hydration products.
High Early Strength Cement is a special purpose cement complying with AS 3972, Type HE. It is manufactured from specially prepared Portland cement clinker and gypsum.