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PREPARATION AND PLACEMENT OF CONCRETE FLOOR SLAB

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PREPARATION AND PLACEMENT OF CONCRETE FLOOR SLAB

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  1. PREPARATION AND PLACEMENT OF CONCRETE FLOOR SLAB Presented by: Concreters Sydney

  2. Formwork Preparation For example, the position should be correctly lined and levelled with no protruding nails in the concrete. Formwork is used to hold the concrete slab in place until it gains shape and dries up. The erection of formwork should follow some aspects of construction. Joints should also be sealed appropriately and use materials like steel, wood and aluminium in the construction of formwork. The formwork frame is laid correctly to make sure the slab is not compromised. The concrete floor slab should be on the same level as the height of the formwork.

  3. Excavate the Surface Excavation machines are used on the site to level the ground followed by pins that are arranged on the ground to mark the project’s floor area. Engineers use a laser level to make the ground level followed by footings and piers. Before concrete is poured, formwork is built around the perimeter wall which holds the slab in place until it sets. Removal of organic stone, large roots and organic materials is performed.

  4. For the concrete to be set well on the floor, the slab bedding should be organized properly. Organize Slab Bedding This can be done by using crusher dust of a quality thickness that is accepted by building codes. The surface should be flat and compacted firmly. When this is done correctly, be assured there will be no cracks after or before curing.

  5. Pour Concrete and Compact • Before you pour the concrete, make sure the aggregate mix meets all the comprehensive strengths required to prevent excessive shrinkage. • Water in concrete increases shrinkage and cracking. It is therefore advised to use a plasticizer to achieve the desired slump. • Use a mix of concrete that has the specified strength and before concrete placement, soak the concrete slab with water. • This helps prevent moisture loss. • Pour the concrete and spread it over the slab area. • Adding control joints is necessary; this will prevent cracks from forming when the concrete dries up and shrinks. • Compact the slab properly for the concrete to bind and bound. Consolidate low slump using vibration.

  6. Cure The Concrete Slab Floor And Remove Formwork • • • •

  7. Conclusion • The recommended standard of concrete floor slab should be 4 inches for residentialand five to six inches in case the concrete is going to carry heavy loads occasionally. www.concreterssydney.net.au • A good finish will make the slab look awesome for some time but a better ground preparation will look awesome for a lifetime. https://www.concreterssydney.net.au/preparation-and-placement-of- concrete-floor-slab/

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