Comparing Special Concrete and Conventional Concrete in Bridges and Precast Structures

Priyanka Sinha, Apeksha Chaudhari

Abstract: India is rapidly developing, especially in transportation. Bridges and other elevated structures are crucial for smooth traffic flow. However, these structures face heavy loads throughout their lifespan, requiring high - quality concrete with strong compressive strength and durability. Traditional concrete often falls short in meeting these requirements. To enhance concrete properties for bridge construction, special ingredients like Micro silica, Poly - propylene fiber, and Bacillus Subtilis are added. This review focuses on these ingredients, their effects on concrete, and their role in strengthening its engineering properties. It discusses how these additives improve strength, durability, and overall quality of the structures.

Keywords: Concrete, Cracks, Self - healing, Bacillus subtilis, Micro silica, Special Concrete, Poly - propylene fiber, Strength