DESIRABLE PROPERTIES OF CONCRETE FOR PAVEMENT CONSTRUCTION

Properties of concrete for rigid pavement

Properties of Concrete in Plastic State 1. Essential Qualities The quality of the hardened concrete is largely dependent on the quality of the plastic concrete. The curing process also contributes to attainment of the specified design criteria. Because the consistency of the mix may vary, careful adherence to design criteria is extremely important. When the … Read more

WHAT ARE THE ADVANTAGES & LIMITATIONS OF GEOPHYSICAL TEST?

Geophysical Test - Advantages & Limitations

GEOPHYSICAL TEST METHODS Geophysical test is often used as part of the initial site exploration phase of a project and/or to provide supplementary information collected by widely-spaced observations (i.e., borings, test pits, outcrops etc.). Geophysical testing can be used for establishing stratification of subsurface materials, the profile of the top of bedrock, depth to groundwater, … Read more

6 BASIC ELEMENTS OF A WELL FOUNDATION

Fig-1 Section of Well Foundation

Well Foundation Well foundations have their origin in India & have been used for hundreds of years for providing deep foundation to important buildings and bridges. Well foundations were freely used during the Moghal Period for bridges across the major rivers. Moghal monuments including Taj Mahal are built on well foundations. Well foundations provide a … Read more

HOW TO PLACE CONCRETE ON SITE?

Fig-2 Concrete placing for walls and columns

Concrete Placing As with the handling of concrete, certain fundamental considerations govern placing techniques. First and perhaps foremost is the need to avoid segregation of the concrete caused by improper techniques. Second is the need to ensure thorough compaction of the concrete. The manner in which concrete is placed can have a significant influence on … Read more

3 BASIC TYPES OF CONCRETE PAVEMENT

JPCP - Jointed Plain Concrete Pavement

Types of Concrete Pavement In pavement construction, three different concrete pavement design types are commonly used: Jointed Plain Concrete Pavements (JPCP), Jointed Reinforced Concrete Pavements (JRCP), and Continuously Rein­forced Concrete Pavements (CRCP) Each of these design types can provide long-lasting pavements that meet or exceed specific project requirements. Each type is suitable for new construc­tion, … Read more

COMPACTION OF CONCRETE – PURPOSE, PROCESS & EFFECT

Fig-1 The Process of Concrete Compaction

What is Compaction of Concrete? Compaction of concrete is one of the important site operations that together enable the fresh concrete to reach its potential design strength, density and low permeability. Properly carried out it ensures that concrete fully surrounds and protects the reinforcement, tendons and cast-in inserts. It also has a direct impact on … Read more

WHY STEEL IS USED IN CONCRETE?

Why steel is used in concrete

Role of Steel in Concrete Reinforced concrete is a material that combines concrete and some form of reinforcement into a composite whole. Whilst steel bars, wires and mesh are by far the most widely used forms of reinforcement, other materials are used in special applications, e.g. carbon-filament reinforcement and steel fibres. Concrete has a high … Read more

HOW TO MIX CONCRETE MANUALLY ON SITE?

How to mix concrete manually (by hand)

Mix Concrete Manually Proper mixing of concrete ingredient is very much necessary as it affects the quality of concrete in its fresh state as well as in hardened state. A concrete is said to be well mixed if it fulfills the following requirements. Concrete mix should be uniform in colour Concrete should achieve proper consistency … Read more