In concrete pouring operations for construction projects, a vibrator is an essential tool that must be ensured to be available. Unfortunately, not everyone understands how a concrete vibrator operates or why it is vital in construction.
This is because concrete vibrators come in various types and each has a different function. Want to know about how a concrete vibrator works and its overall functions? Let’s dive into a detailed explanation below.
What is a Concrete Vibrator?
Before diving into the mechanism of the concrete vibrator, you need to understand its definition first. So, a concrete vibrator is a tool designed to compact building materials, specifically concrete, which is poured into formworks or molds.
The primary function of the concrete vibrator is to remove air or trapped wind within the concrete mix to prevent holes that could compromise the concrete’s structural integrity. Compaction using a concrete vibrator ensures that the concrete is durable, robust, and has a smooth surface finish.
A concrete vibrator has three main parts to pay attention to, namely:
- A motor section that generates vibration.
- A hose that transmits vibration from the motor.
- A vibrator head within the concrete, typically made of a steel cylinder with the same size as a baseball bat.
How Does a Concrete Vibrator Work?
Understanding how a concrete vibrator functions is essential in construction, particularly during the pouring stage. In practice, the concrete vibrator is inserted into freshly poured concrete at intervals.
After that, the vibrator machine is then lifted slowly as compaction occurs. During this process, it is crucial to avoid contact between the vibrator head and the formwork to prevent unwanted vibrations that could lead to small cracks in the finished concrete.
The vibrating time for each point is generally between 5 to 15 seconds, depending on the concrete’s density and consistency. It's also advised not to exceed this time to avoid bleeding in the concrete. Additionally, it’s important to adjust the depth of the poured concrete with the length of the vibrator head to ensure it reaches the base of the pour without touching the formwork.
To prevent unwanted push-back from the vibrator, make sure to maintain its stability when inserting it into the concrete. Furthermore, the vibrator should be lifted at a slight angle rather than horizontally to avoid creating mortar channels when pulling it out. This approach helps eliminate voids or air bubbles in the concrete.
Workers who operate the concrete vibrator should wear protective gear, including safety boots, a helmet, fitted clothing, and gloves. Additionally, wearing loose clothing should also be avoided as it can easily get caught in the fast-moving machine parts and cause injury.
Besides that, workers who handle the concrete vibrator head should wear protective eyewear to shield their eyes from concrete splashes. Clear-lens safety glasses are recommended as they help maintain good visibility, especially when working at night.
Types of Concrete Vibrators
After understanding how a concrete vibrator operates, you may be interested in its various types. Generally, the type of concrete vibrator used depends on the construction project's duration and depth because each type serves specific project requirements. Here are several common types of concrete vibrators:
1. Internal Vibrator
The internal vibrator is one of the most common and practical types. It’s typically used in projects that require thorough vibration, such as in precast concrete work. The internal vibrator will be inserted directly into the molding that has already been filled with concrete to make it denser.
This type of vibrator is preferred for its excellent maneuverability, as well as its ideal weight and size. Due to these qualities, internal vibrators are frequently used on commercial sites and in Department of Transportation projects.
2. External Vibrator
The external vibrator is commonly used in the construction of concrete U-ditches. This type of vibrator helps minimize errors and is an optimal choice for vertical projects, such as wall construction or structures that require maximum reinforcement.
3. Screed Vibrator
The screed vibrator is more user-friendly because operators can work while standing upright. This type of vibrator is an ideal choice for both large and small projects, whether outdoor or indoor. Examples of suitable applications include patios, driveways, basketball courts, and similar projects.
4. Internal Gas Vibrator
Another type of concrete vibrator is the internal gas vibrator. The internal gas vibrator is ideal for projects in areas with limited or no electrical access. This type is suitable for operating in restricted areas, channels, or joints in construction sites that require additional precautionary measures.
Reasons for Using a Concrete Vibrator
Based on the function of concrete vibrators, it is clear that these tools play an essential role in the concreting process because they contribute significantly to making structures stronger and more durable. Besides that, here are some reasons for using concrete vibrators:
1. Preventing Voids in Concrete
Voids or honeycombs in concrete are small pockets filled with trapped air. If left untreated, these voids can drastically reduce the overall durability and consistency of the structure. For this reason, using a concrete vibrator helps eliminate these voids, ensuring the concrete is compact and solid throughout.
2. Increasing Concrete Density
Another reason for using concrete vibrators is to achieve a higher density in the concrete mixture. Dense concrete is stronger and more durable than concrete with a lower density, which is crucial for the structural integrity of a project.
However, the density of concrete can vary, based on the size and number of concrete vibrators used. Both factors affect the vibrator’s ability to achieve a certain density within the required timeframe.
3. Removing Air Bubbles from the Concrete Mix
As mentioned above, air bubbles sometimes become trapped within the concrete mix, which reduces its density and impacts the concrete's overall strength. So, by using a concrete vibrator, these air pockets will be forced out, allowing the concrete to settle more densely.
That was all the information about how concrete vibrators work and their functions you need to know. By understanding the information above, you can optimize the use of a concrete vibrator for your construction projects.
Additionally, it’s essential to pay attention to the quality of building materials used in your construction process. High-quality materials have a significant impact on the overall strength and durability of the structure. The better the materials, the stronger the final building.
For this reason, always choose high-quality building materials, such as the diverse products offered by Semen Merah Putih. Semen Merah Putih offers a range of high-quality products, including Semen Merah Putih Watershield which features Water Repellent Technology.
This technology protects the buildings against moisture infiltration from three sources (external, internal, and from the ground), as well as enhances the building’s strength, durability, and reduces maintenance needs.
Furthermore, Semen Merah Putih Watershield is a super premium multipurpose cement that is ideal to use for all types of construction applications, such as foundations, concrete slabs, pouring, bricklaying, plastering, and finishing.
Interested? Contact us now for more information and product ordering details. Ensure a smooth and successful construction process with the support of top-quality products from Semen Merah Putih!
