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How to check the quality of concrete
The quality of concrete is important during the construction process, which makes us need to find ways to immediately check the quality of concrete in people's houses.Reinforced concrete construction is a product, so to test it, follow the steps like checking industrial products.
Quality control of concrete components is a process:
1. Before mixing concrete, it is necessary to check the gradation to see if it meets the requirements, there are 2 ways to build the gradation:
- Method 1: Experiment. That is, the concrete unit will be tested so that the concrete sample meets the requirements. Then take this grade to apply to your project. This works very well, but usually applies to large projects. Small projects, usually suppliers of commercial concrete have graded already available. The landlord only needs to ask them for submission, and the attached documents.
- Method 2: Check the construction norm, this way is not accurate by 1. When the contractor submits the gradients, we can use the Quota of materials to check the gradation of concrete input.
If the contractor self-mix concrete, it is necessary to add a stage of turning the weight of cement: yellow sand: stone and water according to the norm into drawers to facilitate the process of loading. Depending on the type of mixer, which will choose different types of drawers. Example 1 bag of poker: 2 sand drawers: 3 drawers. Note that sandboxes and stone drawers may be different.
2. Check the concrete mixing process:
If the contractor mixes itself, the following should be checked:
- Does the loading process match the approved grading rate?
- Is the mixing process correctly?
- Is the amount of water suitable?
3. Check concrete before pouring:
- Check with the naked eye: see if the concrete has lumps, water, etc.
- Check the slump. Concrete will be allowed to pour
- Take sample for experiment
4. Concrete casting process:
- Supervise the spread of concrete evenly
- Supervision of concrete compaction: drumstick and table dress
- Check to see if there are any openings during the casting process
5. Concrete curing process: It should be the right process
6. Acceptance of concrete structures:
- At the scene: surface inspection, dimension measurement
- Checking the results of compression test of concrete samples
All 6 steps above, you have checked, supervised and found satisfactory, certainly the quality of concrete in the structure of your house will meet the requirements.
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