Precast Concrete Construction Technology

As the name suggests, precast concrete is prepared by casting and curing the concrete in a mold under specific circumstances. The concrete is totally manufactured in a factory by adopting special construction techniques. When the concrete is fully hardened and prepared, it is sent to the final construction site. Precast concrete construction has become very popular in some countries like the USA, SriLanka, UK, etc.

Precast Concrete

Precast Concrete

There are many different types of precast concrete forming systems for architectural applications, differing in size, function, and cost. Too many building elements are manufactured in a precast concrete yard.

The following are the precast concrete Members.

Railway Sleepers
Bridge Beam
Paving Slab
Beam (tie beam, main beam)
Road and Bridge Components
Column
Footing
PC Pipes
PC Piles
SBS slab (include 't' beam, soffit block)
Pergolas
Stairs, etc...

precast concrete yard

precast column unloading by crane

precast column erection

precast building first stage

precast main beam

precast wall

precast concrete advantages and disadvantages

The advantages and disadvantages of precast concrete

Advantages of precast concrete

1. Precast concrete is produced in a factory with advanced construction techniques.

2. The materials used in precast concrete production are easily obtainable.

3. The construction procedure is very fast, which ultimately saves time.

4. It possesses better thermal insulating characteristics.

5. Precast members are totally fire-proof and sound-proof.

6. Precast members are lightweight and can be transported easily to the job site.

7. Formwork is not required in such construction.

8. If necessary, precast members can be separated and reused in other structures.

9. It is economical & can take a profit.

Disadvantages of precast concrete

1. It requires careful supervision and more skilled workers for producing the members.

2. Uniform spacing between beams is required in the structure, which can become difficult.

3. Some members are broken up and wasted during the time of transportation from the factory to the construction site.

4. The molds that are used for casting are a little costly, so the construction will be economical when a lot of members are produced.