Uses of Aggregates in Construction, Roads, Railway Ballast
Aggregates are the most mined material in the world. Construction aggregate is a broad category of granular raw material of different sizes (sand, gravel, crushed stone, slag, recycled concrete etc) used in construction. Aggregate can be used in a number of ways in construction. In roads and railway ballast the aggregates are used to resist the overall (static as well as
To Determine the Softening Point of Bitumen
Bitumen is viscous elastic material without sharply defined melting points. They gradually become softer and less viscous as the temperature rises. This is the reason why the softening point of bitumen is determined. Softening point is not a melting point, bituminous material do not melt but instead gradually change from semi solids to liquids on application to heating. Softening point is indicative of the tendency of
To Perform Ductility Test on Bitumen
Ductility is the property of bitumen that permits it to undergo great deformation or elongation. Ductility is deļ¬ned as the distance in cm, to which a standard sample or briquette of the material will be elongated without breaking. Dimension of the briquette thus formed is exactly 1 cm square. The bitumen sample is heated and poured in the molds assembly placed on a plate.
Factors Affecting Strength, Hardness and Toughness of Stones
The composition of the compounds determines its hardness or softness. Stones containing Si, Na, K are poor while that containing Mg, Ca, and Fe are good, as they are harder. If the stone is composed of soft and unhardened materials it will result in a soft materials and vice versa. The amount of soft and hard material in a specific sample of stone also matters.
Selection of Stones for Building Construction
Being cheap, hard, durable and naturally good looking, stones are often used in construction but keeping in view the variable properties of stones of different types, there must be some criteria for the selection of stones for construction. The criteria is based upon the following parameters: Chemical composition of stone: Strength and hardness, Durability, Resistance
Uses of GeoTextiles - Specifications and Applications
Because of the wide variety of geosynthetics available, along with their different polymers, filaments, bonding mechanisms, thicknesses, masses, and so on, they have a wide range of physical and mechanical properties. A further complicating factor is the variability of some properties, even within the same manufactured lot or roll. Differences may sometimes be due
Sources and Types of Pozzolanic Material
A simple everyday definition of 'pozzolan' could be 'a finely powdered material which can be added to lime mortar (or to Portland cement mortar) to increase durability. A more formal definition is given by ASTMC618-84 as 'a siliceous or siliceous and aluminous material which, in itself, possesses little or no cementitious value but which will, in finely divided form in the
Soil Cement - Definition, Use in Earthfill Dams & Embankments
In recent years soil cement as a facing material for earthfill dams has been found economical where suitable riprap is not available near the site. A reasonably firm foundation is preferred so that deformation after placement of soil-cement is not significant; however, no unusual design features need be incorporated into the embankment. Normal embankment
Types of Paints based on Different Characteristics
Paints can be classified into different types on the basis of: Their Function Binder or Medium Pigment Used Sheen Appearance Based on Binder/Medium Acrylic Latex Paint Latex Polyvinyl Acetate (PVA) Shellac Based Paint Spirit Based Paint Epoxy Paint Polyurethane Alkyd Resin Tung Oil Paint Linseed Oil Paint Distemper Emulsion Chlorinated Rubber
Properties of Paints & Tests Applied on Paints
Important buildings were once designed and put together by master masons who knew how to work with stone, and understood the advantages and limitations of the material. Stone structure should be a combination of structural firmness, technical commodity and aesthetic delight. Ensure proper wall construction. The wall thickness should not exceed 450mm.
Properties of Wood & Timber - Physical & Chemical Properties of Wood
Wood is the oldest material used by humans for construction after stone. Despite its complex chemical nature, wood has excellent properties which lend themselves to human use. It is readily and economically available; easily machinable; amenable to fabrication into an infinite variety of sizes and shapes using simple on-site building techniques; Exceptionally strong relative
Properties of GeoTextiles for Civil Engineering Applications
Because of the wide variety of geosynthetics available along with their different polymers, filaments, bonding mechanisms, thicknesses, masses, and so on, they have a wide range of physical and mechanical properties. A further complicating factor is the variability of some properties, even within the same manufactured lot or roll. Differences
Presentation Video on Wood Preservation
Life cycle of a Wood Preservatives... Wood Preservatives, Its types, applications of wood preservatives... wood, timber, wood decay preservation, seasoning of wood... Life cycle of a Wood Preservatives...Wood Preservatives, Its types, applications of wood preservatives...wood, timber, wood decay preservation, seasoning of wood...Wood Preservatives, Its types,
Watch Video on How to Paint a Room
How to paint a room step by step process... Painting & Decorating: How To Paint A Wall... How to paint a room step by step process... Painting & Decorating: How To Paint A Wall... How to paint a room step by step process... Painting & Decorating: How To Paint A Wall... How to paint a room step by step process... Painting & Decorating: How To Paint A Wall... How to
