when do we use cement and concrete? | Yoo Answers
Oct 05, 2009#0183;#32;Portland Cement is is the binding agent in making concrete. Concrete is made of cement, limestone, amp; sand. You would not cement other than to mix
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Oct 05, 2009#0183;#32;Portland Cement is is the binding agent in making concrete. Concrete is made of cement, limestone, amp; sand. You would not cement other than to mix
Aug 27, 2008#0183;#32;concrete is a mixture of cement {(limestone heated to become calcium oxide quick lime ) the cement actually becomes slaked lime calcium hydrode when water is added } and sand density of g/cm3. So this means the resultant concrete will have a slightly lower density ( dependent on the ratio of cement to sand ) than limestone but
Dec 30, 2009#0183;#32;The hardcore (ballast of broken stone) in concrete is to increase the strength of the concrete, to save on cement and to prevent cracking during the curing process. Sand is
Jan 18, 2007#0183;#32;Portland cement(the ingredient that makes concrete concrete) is manufactured from limestone. Also, many roadway''s base material is crushed limestone. Limestone is
Jan 31, 2010#0183;#32;The clinker is ground with gypsum to help the setting time of the finished product, cement. Limestone therefore is a source of calcium for the chemical formulation and is a cheap one at that and...
Apr 21, 2008#0183;#32;To give the finished concrete the flexure to bend instead of crack, according to engineering reports, which conflicts with the engineering reports that a concrete structure will fail when it has flexure. Go figure. It''s all about the money, potash is used for cheaper materials to make concrete with, that''s all. YAWN
why is limestone used in cement/concrete? Yoo Answers Oct 23, 2006Limestone is crushed up with clay (or shale) and heated in large rotating kilns, a little calcium sulfate powder is added to the cement to stop it setting as soon as water is mixed in. Cement powder is mixed with sand and small stones to make concrete (the
Sep 23, 2008#0183;#32;Limestone (or Calcium Carbonate, CaCO3) is used a lot in building work because there is so much of it (300 limestone quarries!) and it can be eaily
Jan 19, 2007#0183;#32;Portland cement(the ingredient that makes concrete concrete) is manufactured from limestone. Also, many roadway''s base material is crushed
Jan 26, 2006#0183;#32;The burning process changed the chemical properties of the materials and Joseph Aspdin created a stronger cement than what using plain crushed
why is limestone essential in cement. Why is limestone used in cement/concrete? Yoo! Answers. mountains of limestone, clay, cement time of the concrete. Lime and silica make up about 85% fed into the kiln... Chat Online. Why is limestone used in cement/concrete? Yoo! Answers. why is limestone essential in cement
Oct 22, 2006#0183;#32;Limestone is crushed up with clay (or shale) and heated in large rotating kilns, a little calcium sulfate powder is added to the cement to stop it setting as soon as water is mixed in. Cement...
Mar 14, 2010#0183;#32;Limestone is made of highly compressed particles of calcite, the skeletal remains of ancient tiny organisms. It is crushed and calcined for use in cement, and the calcined limestone is
Nov 03, 2010#0183;#32;In cement the chemical properties of calcite, which is calcium carbonate, are utilized to create the chemical reaction that transforms powdered cement and water into hard concrete. Calcium...
Jan 29, 2010#0183;#32;Joseph Aspdin created the first true artificial cement by burning ground limestone and clay together. The burning process changed the chemical properties of the
Feb 22, 2008#0183;#32;Cement is made by heating limestone with small quantities of other materials (such as clay) to 1450#176;C in a kiln. The resulting hard substance, called clinker, is then ground with a
Jun 15, 2008#0183;#32;1a) What are the processes and chemical equations used to make Portland cement? What are the waste products? Are they harmful? 1b) Whats the difference between ''brickies sand'' and beach sand? Why is brickies sand used more? 1c) List chemical equations to show how concrete
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