How to do Concrete Compaction | Compaction of Concrete | English | UltraTech Cement

Concrete compaction is the process that forces entrapped air out from freshly placed concrete and packs the aggregate particles together so as to increase the density of the concrete. Compaction of concrete makes concrete stronger. It is an important building process.
Proper compaction of concrete ensures that the reinforcement, tendons, inserts, and fixings are completely surrounded with dense concrete, the formwork is completely filled and there are no pockets of honey-combed material.
Here are a few essential tips about concrete compacting -
• Manual compacting is ideal for small concrete works; you can use a steel rod for rodding or a wooden cross beam for tamping.
• Mechanical compacting is done with the help of vibrators which results in more effective compaction of concrete.
• Surface compacting is done for slabs and flat surfaces. Needle vibrators are generally used for structures like footing, beams, and columns.
• While using the needle vibrator make sure that the needle is straight and the needle should not be touching the reinforcement and framework plates.
• Do not vibrate the needle at a single spot for more than 15 seconds and remove the needle slowly.
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