Placing and Finishing Concrete Some of the main requirements for the placing of concrete are: even spreading, concrete quality ensuring, balance on air content, homogeneity and water-cement ratio. The deliverables of placing is to avoid segregation and aid compaction of concrete. Concrete is a plastic material, so it can be molded into any shape. In…
Curing of Concrete For the hardening of concrete through the setting of constituent components and to promote the reactions in the concrete, curing is carried out. Curing is needed for three main reasons, i.e. for the dissipation of heat, to reduce the moisture loss due to evaporation, and to maintain moisture for hydration. Curing helps…
Concrete Mix Design Mix design is the selecting of the right type of material in the right proportion to achieve all the specific properties of the concrete, to make the process of making concrete as economical as possible. Although this is not a simple procedure. The quality of concrete is directly influenced by the quality…
Factors to Consider When Choosing a Metal Corrosion The main disadvantage of steel is that it rusts. It needs to be protected by a coating that doesn’t corrode, such as paint or non-ferrous metal. Roofing iron is coated with zinc, which doesn’t corrode in air or water. If the surface is meant to be shiny and…
Ferrous Metals and Non-Ferrous Metals | Examples & Lists of Metals Difference Between Ferrous Metals and Non-Ferrous Metals With Examples Ferrous Metals List and Examples Mind Iron Properties and Uses of Mild Iron Cast Iron Properties and Uses of Cast Iron High Carbon Steel Properties and Uses of High Carbon Steel High Speed…
Types of Steel and Cast Iron Test Tensile Strength Test Tensile strength is the stress required to pull apart a test piece by an axially applied load. It is performed on a machined test piece in which the middle section of the length is reduced in diameter. It is the standard test by which the…
Effect of Alloying Elements in Cast Iron Besides carbon, cast iron contains sulphur and phosphorus as impurities from the process, alloying elements such as silicon and manganese, which significantly influence the properties of the cast iron. Nickel, chromium-vanadium, copper are other metallic elements which are added in a varying amount to have specific properties. Effect…
Factors Affecting Microstructure of Cast Iron The structure of Cast iron is affected by the following factors: Carbon Content The higher the iron’s carbon content, the greater will be the tendency for it to solidify grey. To ensure that the structure is completely graphitic, the carbon content is kept less than 2 per cent when…
Alloying Elements of Steel | Alloying Elements Properties and Effects A steel composition is made up of different elements combined to form the final product. In metalwork, these elements are called alloying additions. Each alloy addition element affects steel properties differently. Depending on the desired properties, the proportion of alloying additions is added. Alloying Elements of…
Properties of Metals| Metal Types and Heat Treatment of Steel Properties of Metals Ferrous metals are metal alloys containing iron. The name ferrous comes from the Latin word for iron Ferro. Most are magnetic. Steel Production Process Today, iron is the backbone of the world we have built. It is strong, plentiful, and cheap. Iron…
