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August 12, 2017 18:05

Portland cement

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Portland cement - binders, widely used in various fields of construction.It has similar characteristics to a conventional cement, but differs in physical and chemical properties.Outwardly looks like a powder gray-green, and in a frozen state resembles stone.Portland cement also exists in other colors, due to the use of special dyes.When water is added to a powder after drying takes stone-like state.

Content

  1. What is Portland?
  2. Application
  3. composition and production
  4. types and brands of Portland cement
  5. Specifications Portland
  6. Properties
  7. Advantages and disadvantages

What is Portland?

The Building cements are substances which the main components - a calcium aluminates and silicates.All binders (cements) there are several groups:

  1. based on Portland cement clinker;
  2. based on aluminous clinker.

Portland belongs to the first group.This is an important matter of building cements.Base material - calcium silicate, which is also referred to as portlantid.The name of the material comes from the Isle of Portland, whose territory is mined gray stone.

Application

Application of Portland is quite broad.Construction material used for the production and manufacture of:

  • concrete, reinforced concrete;
  • durable plaster;
  • screed floor;
  • clutches;
  • various concrete structures.

composition and production

composition of Portland cement - is limestone, gypsum and clinker clay special processing.Corrective additives determine the features and options of use, giving the material specific properties:

  • certain thickness;
  • hardening speed;
  • resistance to adverse, man-made factors.

Production is based on the basis of calcium silicates.To adjust the setting of plaster is applied.Production takes place by firing a mixture of a certain predominance of calcium.

types and brands of Portland cement in the construction

use the following grades of Portland cement: M300, M400, M500, M550 and M600.The choice of construction material is carried out depending on the desired properties.

Use Cases defined by possible additions.There are several types of portland cement:

  • Road;
  • hydrophobic;
  • sulfatoustoychivy;
  • plasticized and others.

important characteristic of the material - fineness of grinding, which determines the strength and cure speed.

When mixing the powder with water, a rubbery mass that hardens over time, forming a durable and solid stone-like material.

Specifications Portland

Specifications Portland cement M500 D0:

Specifications Portland cement M400 D0:

Properties

main properties of Portland cement - is:

  • durability;
  • strength;
  • frost;
  • water resistance.

substance capable of withstanding relatively high loads.This figure is determined by the brand of the material.

Advantages and disadvantages

main advantage of Portland cement - water resistance, durability, resistance to low temperatures.High sedimentary material has no distortion and not form fine cracks.The disadvantage is the small volume strain during the solidification of low-quality goods, which should take into account when working, providing as contraction joints.

cost of production depends on the manufacturer, brand and size.Selection is done with regard to the intended use of the substance.More information you can find out by reading with photos and videos on the site, as well as reading reviews.

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