Post tension slab is a method of providing strength and stability to the long-span slabs in building construction. Post-tensioning slabs are usually the flat slab and the thinnest slab. Post tension slab is also known as pt slab.
The post-tensioning slab was first used by Eugene Frisinet in 1933 to establish a maritime terminal in France. The post-tensioning method is then widely used in bridges, elevated slabs (parking structures and residential or commercial buildings), residential foundations, walls.
PT slab gives the thinnest slab and long span. Steel tendon increases the strength of the concrete slab. The steel tendon in the PT slab is mostly kept in compression. Which usually resists the deflection of the slab.
At the point when these post tensioned steel ligaments are anxious, the substantial is crushed, in different terms, the substantial is compacted which builds the compressive strength of the substantial and simultaneously the steel ligaments that are pulled increment the rigidity. Subsequently, the general strength of the substantial increments.
Post tension slab is a combination of conventional slab reinforcement and additional high-strength steel tendon. After the concrete is set, the slab steel tendon is stressed according to the design.
The use of post-tension concrete has become increasingly prevalent in the construction industry. It is a method of increasing strength with conventional slab reinforcement.
This type of slab method can reduce the thickness of the slab. The post-tension slab method can be used to increase the space of a building and floor space can be obtained in a long span.
Benefits of Post Tension Slab
1. Building Benefits
Post-Tensioned Slab enjoys an upper hand over others as it makes an exceptionally proficient base for floor plan with slim slabs and columnless spaces in bigger ranges. It gives a planner the opportunity to work uninhibitedly with his plans.
2. Business Spaces
Post-tensioning outcomes in more slender substantial slabs making the significant reserve funds in floor to floor tallness accessible as extra floors.This can give extra rentable space inside a similar by and large structure stature.
3. Lessens Deadload
As the post-tensioned slabs have lesser thickness, the amount of cement and support utilized is diminished upto 20% - 30% when contrasted with traditional substantial slabs.
4. Primary Durability
Post-Tensioned slabs show diminished breaking, further developed sturdiness and lower upkeep costs. Their diversion can be constrained by differing the measure of post-tensioning to adjust any piece of applied loads following focusing.
5. Fame
The interest for Post-Tensioned slabs, all through the world, keeps on expanding as a result of the critical advantages for designers, planners, architects, project workers and end clients.
Peruse More : Pre-Tensioning and Post-Tensioning in Prestressed Concrete Design