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Civil Engineering Engineering Materials Cement

Introduction to Cement

How Portland cement is made??

Bricklayer Joseph Asp din of Leeds, England first made portland cement early in the 19th century by burning powdered limestone and clay in his kitchen stove.
Portland cement, the basic ingredient of concrete, is a closely controlled chemical combination of calcium, silicon, aluminum, iron and small amounts of other ingredients to which gypsum is added in the final grinding process to regulate the setting time of the concrete. Lime and silica make up about 85% of the mass. Common among the materials used in its manufacture are limestone, shells, and chalk or marl combined with shale, clay, slate or blast furnace slag, silica sand, and iron ore.

Each step in manufacture of portland cement is checked by frequent chemical and physical tests in plant laboratories. The finished product is also analyzed and tested to ensure... [Read More]

Strength of cement

Also known as the mother of all engineering, it is the oldest, most simple and useful of all engineering sciences. Civil engineering is field of engineering sciences, related to construction, design and maintenance of buildings, dams, bridges, tunnels, highways etc.
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The traditional building materials for bridges are stones, timber and steel, and more recently reinforced and pre-stressed concrete. For special elements aluminum and its alloys and some types of plastics are used.

These materials have different qualities of strength, workability, durability and resistance against corrosion. They differ also in their structure, texture and color or in the possibilities of surface treatment with... read more [Read More]

  1. Type I Normal cement
  2. Type IA Normal + air entrained agents
  3. Type II Moderate sulphate resistant cement
  4. Type IIA Moderate sulphate resistant cement + air entrained agents
  5. Type III High early strength cement
  6. Type IIIA High early strength cement + air entrained agents
  7. Type IV Low heat cement
  8. Type V High sulphate resistant cement
Properties
Hydration
Soundness
Fineness
Setting time
Tests
Briquette Test
Compression Test
Test for Poisson's ratio of cement
Test for Mod. of Elasticity of cement...
read more [Read More]
OPC
RHC
LHC
SRC
Type I
Type II
Type III
Type IV
Type V
White Portland cement
Air entraining Portland cement
Oil well Portland cement

Cement can be defined as the bonding material having cohesive & adhesive properties which makes it capable to unite the different construction materials and form the compacted assembly. Ordinary/Normal Portland cement is one of the most widely used type of Portland Cement.

The name Portland cement was given by Joseph Aspdin in 1824 due to its similarity in colour and its quality when it hardens like Portland stone.Portland stone is white grey limestone in island of Portland, Dorset.... read more [Read More]

In concrete a substance other than active and inert matter, added in small amounts to the mix to alter its natural properties to required properties... read more [Read More]
1. Accelerating admixtures
2. Retarding mixtures
3. Fly ash

4. Air entraining admixtures
5. Water reducing admixtures

The liquids used were water (the control), carbonated water, orange juice, ammonia, and bleach. Uniform cement blocks were made out of equal parts of dry cement and each liquid. Each block was tested for flexural strength and impact energy.

For each type of cement three measurements were taken by dropping a one-pound weight on a fragment starting at one-foot heights and then increased the height until the fragment fractured..... read more [Read More]

In concrete a substance other than active and inert matter, added in small amounts to the mix to alter its natural properties to required properties... read more [Read More]
1. Accelerating admixtures
2. Retarding mixtures
3. Fly ash

4. Air entraining admixtures
5. Water reducing admixtures
Related Pages
Related Pages
Manufacture of Lime Properties Hydraulic Lime
Properties Fat Lime Uses of Hydraulic Lime
Uses of Fat Lime Lime as an Engineering Material
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