Home of Civil Engineering
We have the following physical properties of concrete which have various effects on strength of concrete. Specific gravity Density Absorption and surface moisture Bulking of sand Unsoundness due to volume …
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The Pantheon, called the Temple of the Gods, is one of the greatest engineering wonders of the Roman Empire. Built in 128 A.D. by Emperor Hadrian, the Pantheon held the …
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Definitions Admixture (ASTM C125): “An admixture for concrete is defined as a material other than water, hydraulic cement, and aggregates that used as an ingredient of concrete and is added …
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Hydration of Cement Hydration is the collective term describing the chemical and physical process that take place between cement and water It is assumed, although not completely valid, that the …
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Cement is a hydraulic binder, i.e., an inorganic, non-metallic, finely ground substance which, after mixing with water, sets and hardens independently as a result of chemical reactions with the mixing water and, …
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Definition “The standard consistency is that consistency, which will permit the Vicat plunger to penetrate to a point 5 to 7mm from the bottom of the Vicat mould when tested.” OR “Consistency …
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Definition The cement after setting shall not undergo any volume change. The change of volume is mainly because of the presence of excess of lime combined with acidic oxide in …
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One of the last steps in the manufacture of cement is the grinding of clinker mixed with gypsum. Because hydration starts at the surface of the cement particles, it is …
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The Romans already more than 2.000 years ago knew cement making, but the knowledge was lost with the fall of their empire. It was not until the 19th century, starting …
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