A bituminous surface treatment (BST) is a chip seal or seal coat. It’s a liquid asphalt surface treatment with a thin layer of aggregate placed at a thickness of around 0.5 inches or less. BSTs are normally used on pavements ...
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Submerged Floating Tunnel: Principle, Features, and Challenges
A submerged floating tunnel (SFT), also called Archimedes bridge or suspended tunnel, is a tunnel that floats in water supported by its buoyancy (specifically, by employing the hydrostatic thrust, or Archimedes’ principle). Tunnels in water are not new in civil ...
What is the Difference between Bridge and Box Culvert?
It may appear that bridge and culvert structures are similar as they both serve the vital need of transportation. However, they are very different in aspects like structural design, construction, components, load-carrying capacity, costs, etc. Culvert is defined as a ...
Anti-Stripping Agent for Bituminous Mix
Anti-stripping agents are used for bituminous mixes and materials to ensure adhesion between bitumen and aggregates (hydrophilic), even when submerged in water. Material Requirement The anti-stripping agents shall consist of fatty acid amines having a long hydrocarbon chain. These agents ...
Metal Beam Crash Barrier: Material, Construction, and Advantages
Metal beam crash barriers are an efficient road safety device that protects the vehicle and its occupants in the event of an accident and acts as an outstanding visual aid for drivers, particularly at night. Metal beam crash barriers are ...
How to Divert Traffic during Road Construction?
Traffic diversions are provided for a safe and efficient movement of traffic through or around the work zones while protecting the workers and equipment deployed for road construction. In addition, they provide continuity to the movement of motor vehicles, bicycles, ...
How to Repair Potholes and Patches in Bituminous Roads?
Patching is the process of filling potholes or deteriorated parts of asphalt pavements. Potholes and other pavement disintegration should be repaired as soon as possible to prevent additional degradation and costly pavement repairs. The repair of bituminous road includes the ...
Fly Ash for Concrete Pavement Construction
Fly ash is an important ingredient used for the production of cement-based materials like concrete, mortar, etc. One primary application of fly ash is in concrete pavement construction, where a certain percentage of cement is replaced with fly ash to ...