Beam with Seeding Tray and Polythene Balls

For simply supported reinforced concrete beam, the region below neutral axis is in tension and above neutral axis in compression.

As concrete is weak in taking tension, steel reinforcement is provided in the tension zone. The concrete below the neutral axis act as a stress transfer medium between the compression and tension zone.

Partial replacement of the concrete below the neutral axis is an idea that create reduction in weight and savings in materials.

For this product, an experimental investigation on partial replacement of concrete below the neutral axis is done by using seeding trays and the results were compared with M35 grade concrete RCC beams and replaced beams by using polythene balls.

Fig: Beam with seeding tray and polythene balls

Fig :Testing of beam under loading frame

In the experiment, we found that the beam of seeding tray with polyethene balls with much reduced the volume of concrete has 3.25 % less weight than the conventional beam.

The load carrying capacity of beam of seeding tray with polyethene balls equal to 90 % of that of Conventional beam.

Simultaneously, the beam of seeding tray with polyethene balls also has improved elasticity property compared to the conventional beam which causes the conventional beam to deflect less than the beam of seeding tray with polyethene balls.

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