Shrinkage Cracking in Concrete Structures | Long Term Effects

Shrinkage crack

Long-term Shrinkage Cracking of Concrete Internal or external restraints in a concrete structural element may resist free shrinkage of concrete, over time this leads to Shrinkage Cracking. In concrete structures, the volumetric reduction that happen due to the loss of moisture by evaporation is known as the shrinkage of concrete. This deformation is time dependent … Read more

Soil Nailing | Principles | Advantages

Soil-nailing-done-to-protect-the-highway

Soil Nailing Soil nailing is a ground improvement technique which is used to reinforce soil to make it more stable. Soil nailing is used for slopes, excavations, retaining walls etc. to make it more stable. The faces of steep slopes are usually protected by shotcrete and mesh for temporary works and by either cast-in-place concrete … Read more

Reinforced Soil | Principles of Soil Reinforcing | Advantages

soil reinforcement

Reinforced soil is the combination of compacted earth fill with tensile reinforcement to create an earth structure. The properties and performance of this earth structure depend on the bonding between the soil and reinforcement. The layout of reinforcement is done between the layers of compacted earth fill, which is an essential part of the construction … Read more

Factors affecting Compaction of Soil

Placing of soil over the reinforcement material

Factors affecting Compaction of soil Compaction of the soil is the process where the dry density of soil is increased by reducing air content or air voids present in the soil. This process is an essential part of the construction of any structure, as it strengthens the soil. Many factors influence the degree with which … Read more

Methods of Underwater Concrete Repair | Concrete Structures Rehabilitation Underwater

Repair of underwater structures

Methods of Underwater Repair of Concrete Structures Underwater concrete structures are prone to damage due to many reasons. There are some methods which are specially adapted to repair these damages. Care should be taken to ensure that the damaged area is not contaminated before the application of the repair material. The material used for the … Read more

Types of structural supports | Boundary Conditions

Hinge support in sydney harbor bridge

Types of supports Defining the boundary conditions in aamodel is one of the most important part of preparing an analysis model, irrespective of the software that you use. Supports are an essential part of building your model to ensure accurate and expected results. These are not to be ignored nor guessed as it can lead … Read more

Characteristics of Good Building Stone | Construction Aggregate Properties

Building stones used in construction

Characteristics of Good Building Stones Every building stone which is used for construction, cannot satisfy all the ideal requirements. For example, when the stone satisfies the requirement of strength and durability, it may not do the same with other necessities such as ease of dressing. Hence it is the job of the site engineer to … Read more

Reinforcements in a Reinforced Concrete Beam | Shear Links | Reinforcement

Reinforcements in a Reinforced Concrete Beam In RCC beams, elements are designed to resist the loads that cause bending moment, shear forces and sometimes in some cases, it also causes torsion along their length. It’s a known fact that concrete is strong in compression and very weak in tension. The steel reinforcement present in the … Read more

Movable bridges | Special Types of Movable Bridges | Photos

Pontoon retractile

Movable Bridges & Types Movable bridges are the bridges which can change their position and sometimes even the shapes so as to allow the passage of vessels and boats in the waterway. This type of bridge has lower cost of building as there are no high piers and long approaches. Utilization of this bridge stops … Read more