Рет қаралды 34,716
පොළව concrete කිරීම/#floor concrete
Flowing concrete involves placing and #finishing concrete in a way that ensures it fills the forms properly and achieves a smooth, even surface. Here are the steps to flow concrete effectively:
Materials and Tools Needed:
Concrete mix
Water
Concrete mixer or mixing tools
Wheelbarrow or bucket (for transporting concrete)
Shovels
Trowels
Screed board (a straightedge tool)
Bull float
Edger
Jointer (groover)
Concrete broom (for finishing)
Protective gear (gloves, boots, goggles)
Steps:
1. **Preparation**:
**Prepare the Site**: Ensure the area where the concrete will be poured is clean, leveled, and free of debris. Install forms to hold the concrete in place.
**Sub-base Preparation**: Lay a compacted sub-base (usually gravel) to provide a stable foundation for the concrete.
2. **Mixing the Concrete**:
**Proportioning**: Measure the ingredients (cement, sand, gravel, and water) according to the mix design.
**Mixing**: Combine the materials in a concrete mixer. If using a pre-mixed bag, follow the instructions for water addition. Mix until you achieve a uniform consistency.
3. **Pouring the Concrete**:
**Transport the Concrete**: Use a wheelbarrow or bucket to transport the mixed concrete to the site.
**Placing the Concrete**: Pour the concrete into the forms, starting from the farthest point and working your way back. Spread the concrete evenly using shovels.
4. **Compacting the Concrete**:
**Vibration**: Use a concrete vibrator to remove air pockets and ensure the concrete fills all spaces within the forms. If you don’t have a vibrator, tap the sides of the forms with a hammer to help settle the concrete.
5. **Screeding**:
**Leveling**: Use a screed board to level the concrete. Move the board back and forth in a sawing motion across the top of the forms to remove excess concrete and ensure a smooth surface.
6. **Floating**:
**Initial Floating**: Use a bull float to smooth the surface. This helps to embed aggregate and fill voids. Perform this step after the concrete has lost its sheen but before it sets.
7. **Edging and Jointing**:
**Edging**: Use an edger to round the edges of the slab to prevent chipping.
**Jointing**: Create control joints using a jointer tool to help control cracking. These should be placed at intervals roughly equal to the slab's thickness in feet.
8. **Troweling**:
**Finishing**: After the initial set, use a trowel for a smooth finish. For a very smooth surface, use a steel trowel. For a non-slip surface, consider a broom finish by dragging a concrete broom across the surface.
9. **Curing**:
**Curing**: Keep the concrete moist to prevent rapid drying, which can cause cracking. Cover with plastic sheeting or use a curing compound. Curing typically lasts at least 7 days, with the concrete gaining strength over time.
10:
Cleaning Tools-Clean all tools and equipment promptly before the concrete hardens.
**Remove Forms**: After the concrete has cured sufficiently, carefully remove the forms.
By following these steps and paying attention to detail, you can ensure the concrete flows well and achieves a smooth, durable finish.