Concrete Structures
Cathodic protection of concrete
Cathodic protection of concrete: Cathodic protection (CP) is a technique used to control the corrosion of a metal by making it the cathode of an
What is plastic concrete?
Plastic concrete is a type of concrete that contains a significant amount of bentonite clay, which is a natural substance that acts as a water-reducing agent and plasticizer. This results in a concrete mix that is more workable and less prone to cracking than traditional concrete mixes. Plastic concrete is also less permeable than traditional concrete, making it a good choice for applications where watertightness is important.
Here are some of the key properties of plastic concrete:
- High ductility: Plastic concrete is more ductile than traditional concrete, which means that it can deform more without cracking. This makes it a good choice for applications where the concrete is likely to be subjected to stress or movement.
- Low permeability: Plastic concrete is less permeable than traditional concrete, which means that it is less likely to allow water to pass through it. This makes it a good choice for applications where watertightness is important, such as in the construction of dams, tunnels, and swimming pools.
- Self-healing: Plastic concrete has the ability to self-heal small cracks, which can extend the life of the concrete and reduce the need for maintenance.
- Durable: Plastic concrete is a durable material that can withstand exposure to harsh weather conditions.
Here are some of the applications of plastic concrete:
- Dam construction: Plastic concrete is often used in the construction of dams because of its low permeability and self-healing properties.
- Tunnel construction: Plastic concrete is also used in the construction of tunnels because of its ductility and ability to withstand stress.
- Swimming pool construction: Plastic concrete is a good choice for swimming pool construction because of its watertightness and durability.
- Other applications: Plastic concrete can also be used in a variety of other applications, such as the construction of foundations, walls, and floors.
:Technical specifications of the microsilica gel product
- Physical state: gel
- Color: Gray
- pH: 10
- Packaging: 25 kg gallon
- Expiry date: 8 months after production in a sealed bag away from moisture
- Mixing ability: Yes
- Chlorine ion: No
- Freezing point: 2-
Here are some of the benefits of using plastic concrete:
- Increased durability: Plastic concrete is more durable than traditional concrete, which can extend the life of the structure and reduce the need for maintenance.
- Improved watertightness: Plastic concrete is less permeable than traditional concrete, which can prevent water damage and extend the life of the structure.
- Reduced cracking: Plastic concrete is more ductile than traditional concrete, which can reduce cracking and extend the life of the structure.
- Self-healing: Plastic concrete has the ability to self-heal small cracks, which can further extend the life of the structure.
Here are some of the drawbacks of using plastic concrete:
- Higher cost: Plastic concrete is more expensive than traditional concrete, which can make it a less attractive option for some projects.
- Reduced strength: Plastic concrete has a lower compressive strength than traditional concrete, which may limit its use in some applications.
- Limited availability: Plastic concrete is not as widely available as traditional concrete, which may make it more difficult to source for some projects.
Some examples of plastic concrete projects:
Mardakhan Dam, Azerbaijan:
The Mardakhan Dam is an earth-fill dam with a plastic concrete core located in Azerbaijan. The dam was built in 1999 and is used for irrigation, flood control, and hydropower generation. The plastic concrete core of the dam is 1.2 kilometers long and 18 meters high. It helps to prevent water from leaking through the dam and extends the life of the structure.
Dubai Metro, United Arab Emirates :
The Dubai Metro is a rapid transit system located in Dubai, United Arab Emirates. The metro system was built in 2009 and is the world’s longest automated metro system. Plastic concrete was used to construct the foundations of the metro stations because of its durability and watertightness. The plastic concrete foundations help to protect the stations from water damage and extend the life of the structures.
New York City Subway, United States :
The New York City Subway is a rapid transit system located in New York City, United States. The subway system was built in 1904 and is the busiest subway system in the United States. Plastic concrete has been used to repair and rehabilitate the subway tunnels and stations because of its durability and watertightness. The plastic concrete helps to prevent water damage and extends the life of the structures.
Karnaphuli Tunnel, Bangladesh :
The Karnaphuli Tunnel is a 3.2-kilometer-long road tunnel located in Bangladesh. The tunnel was built in 2018 and is the first road tunnel in Bangladesh. Plastic concrete was used to line the tunnel because of its ductility and ability to withstand stress. The plastic concrete lining helps to prevent the tunnel from cracking and extends the life of the structure.
Channel Tunnel, United Kingdom/France :
The Channel Tunnel is a 50.5-kilometer-long rail tunnel that connects the United Kingdom and France. The tunnel was built in 1994 and is the longest underwater rail tunnel in the world. Plastic concrete was used to line the tunnel because of its ductility and ability to withstand stress. The plastic concrete lining helps to prevent the tunnel from cracking and extends the life of the structure.
These are just a few examples of the many projects that have been built using plastic concrete. Plastic concrete is a versatile material that can be used in a variety of applications. As the technology continues to develop, we can expect to see even more innovative uses for plastic concrete in the future.
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