IMPORTANT NOTES WHEN PERFORMING CONCRETE CORE DRILLING
Concrete core drilling is a modern and advanced technology in concrete drilling and cutting services and is widely applied in large projects. In this article, we will learn together what concrete core drilling is, what are the construction steps and what are its advantages and disadvantages that make it so widely applied!
1. What is concrete core drilling?
Concrete core drilling is a drilling technology with a drill bit specially designed as a cylinder to drill deep into the concrete block to remove excess material inside, which is the concrete core.
Core drilling in metal is called annular cutting. In concrete, the drill bit is also called a diamond drill bit and is often cooled by water during operation.
Core drilling technique is often used to demolish small structures. Without having to break the entire material plate. Previously, to serve the work of laying water pipes and wiring, you had to break a huge block of steel. However, core drilling technology completely allows you to only remove small parts depending on the needs of use.
2. Advantages and disadvantages of concrete core drilling
2.1 Advantage
- The most outstanding advantage of core drilling is that core drilling does not affect the structure of the construction. As well as reducing noise and dust for the environment.
- Diamond drill bits help the drill hole to be round, the surface around the drill bit is not jagged or broken, leading to damage.
- Drill bit sizes are very diverse with diameters from 16-600mm. Serving many different types of constructions and items.
- Core drilling progress is many times faster than manual methods. If using specialized drill bits, the drill bit depth can be exploited without limit.
- The concrete cores after drilling are kept intact. Helping the process of collecting and cleaning the construction site quickly and easily.
- Provides superior drilling capabilities on walls and concrete of great thickness.
- Helps in the process of construction inspection and precise pipe placement.
2.2 Disadvantages
Below are some limitations of the core drilling method that homeowners should note:
- This method requires experienced and skilled workers. If the worker does not have good expertise, core drilling can drill through reinforced concrete. Breaking the main steel bearing the force affects the construction.
- Core drilling requires water to cool the drill bit, so for projects that have been put into use. If not handled carefully, it can cause many inconveniences during construction.
- The cost of core drilling is much higher than the traditional chiseling method.
3. Applications of concrete core drilling
Thanks to its outstanding advantages, concrete core drilling technology is now widely used in construction projects. When used at the right time and place, it becomes a great solution for construction work and increases labor productivity.
Used when drilling holes to install air conditioning pipes
- Previously, when drilling holes to install air conditioner pipes, chiseling often caused a lot of noise, especially dust and jagged chisels that were unsightly. After installation, the homeowner also had to spend time "patching" the wall.
- However, with the advent of concrete core drilling, it became a great choice. Drilling holes to install air conditioners will be done quickly, conveniently and much more aesthetically pleasing.
Used when needing to drill drain holes for balconies, toilets, technical holes
- To ensure higher accuracy, some homeowners will ask workers not to place the waiting pipes in advance, but the floor drains and technical holes will be positioned and constructed after pouring the floor concrete. Concrete core drilling technology is very beneficial for this, both limiting chiseling and still ensuring high accuracy.
Used when constructing fire roads
- Currently, fire prevention and fighting work is receiving great attention, not only in business establishments but also in civil works, when people's awareness is raised about ensuring the safety of life, property as well as preserving the general appearance of the city.
- The construction and installation of fire pipes often have to go through beams, walls, and concrete floors. In order not to affect the structure as well as ensure aesthetics, investors often require construction units to use concrete core drilling solutions to handle this problem.
Used for construction testing drilling
- Concrete core drilling serves a lot for the work of checking the quality of the construction. Checking whether the hardness of the concrete meets the standards or not... The concrete cores after being drilled will be marked, then brought to the laboratory for testing. From there, the quality of the concrete as well as the quality of the construction can be assessed.
In addition to the above items, concrete core drilling is also used in other works. Such as home repair, or homeowners who need to drill holes to install pipes. Companies need concrete samples to conduct scientific experiments...
4. Construction instructions
Step 1: Preparation
Before proceeding with core drilling, it is necessary to carefully prepare the following tools:
- Joints;
- Water supply hose for cooling the drill bit;
- Auxiliary handle to increase stability;
- Concrete core drill bit.
Step 2: Determine the construction location and position the drill bit
This is a very important step. After determining the correct position of the drill bit, the center of the drill hole will be measured and marked most accurately. Thanks to that, the completion time is more accurate, and the work efficiency is also higher.
Step 3: Hold the drill bit
Use bullet and expansion plugs to secure the drill stand. For the base to stand firmly, the plugs must be screwed tightly. If you have to work on a rough surface, you should use anti-channel bolts. To ensure the construction process is safer.
Step 4: Assemble and fix equipment
After installing the base, proceed to install the machine and accessories. Make sure they are aligned with the center of the drill bit determined in step 2. The base is firmly fixed after the drill bit is placed in the center of the drill hole.
Step 5: Proceed with concrete core drilling
After installing and fixing the machine equipment, we will proceed to drill the concrete core. You need to let the drill move slowly until they have penetrated about 2cm into the construction surface. Then start to slowly press the machine inside until selecting the steel core. It is necessary to ensure the machine speed is slow and stable throughout the construction process.
5. Important notes during concrete core drilling process
- Use less water when drilling with a wet concrete core drill bit.
- When anchoring the base of the concrete core drill, make sure the drill foot is firmly secured with the anchors used for core drilling. Note that it is very dangerous not to use a vacuum base when drilling walls or ceilings.
- Keep the pressure constant and adjust the appropriate rotation speed/minute to sharpen and avoid wearing out the diamond drill bit. When reaching the ideal speed, the drill head will cut into the material effectively. If the speed is too slow, it will not only waste time but also wear out the drill bit. The larger the drill, the more power is needed to operate.
- Ensure safety when working by using a concrete core drill bit. With a circuit breaker in case the ground wire is damaged when drilling in wet conditions.
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Hung Nghiep Phu Construction Investment Co., Ltd. - specializes in constructing civil and industrial works. We look forward to accompanying customers in construction projects as well as continuous procedures such as planning diagrams, applying for construction permits, completing procedures, applying for fire prevention and fighting certificates, ... If you have any questions or are in need of design, completing procedures, please contact us immediately for free consultation!
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Source: Compiled from the Internet
