Collection Tremie Hopper, 42 x 42in, 8in Opening

Tremie Hopper, 42 x 42in, 8in Opening

Gar-Bro Collection Hoppers are used to transfer concrete from the bucket or transit mix truck to tight areas. Used with a variety of chutes or elephant trunk, hoppers make a complete concrete placement system for any job. For most jobs a center discharge collection hopper is used as it is the most versatile.

Top Opening Size  42 x 42

Height 8

Discharge Opening Diameter 68”

Weight 60

The Collection Tremie Hopper is a must have for any concrete placement job. With a top opening size of 42 x 42 and an 8in discharge opening this hopper makes transferring concrete from a bucket or transit mix truck to tight areas quick and easy.

Built to last this hopper is designed for the construction industry. Weighs only 60 pounds so it’s light enough to move around a job site but tough enough for daily use.

Whether you’re working on a large commercial job or a small residential job the Gar-Bro Collection Tremie Hopper is the solution for accurate and precise concrete placement. Use with a variety of chutes or elephant trunks and this hopper will adapt to any job. It ensures proper handling of freshly placed concrete and prevents segregation and washout. The tremie hopper is especially useful when you need to pour concrete underwater, maintaining a continuous flow to prevent issues like segregation and cement washout.

Learn more about Gar-Bro products by downloading our Precast Bucket Brochure and Product Catalog to see how our collection hoppers can streamline your concrete placement and get you the best results. Trust Gar-Bro for all your concrete placing needs.

What is a Tremie Hopper and Tremie Pipe?

A tremie hopper is a key component in underwater construction and deep foundation construction projects. This conical shaped container is attached to the top of a tremie pipe and allows fresh concrete to be introduced into the pipe. Its purpose is to provide a smooth and controlled placement of concrete underwater or below grade. With a large opening the tremie hopper can be batch loaded with fresh concrete and provide a continuous flow into the tremie pipe. This is critical for high quality concrete placement in tough environments.

Key Components and Features for Continuous Flow

A tremie hopper has the following key components and features:

• Conical Shape: Conical shape allows for easy introduction of fresh concrete into the tremie pipe for smooth flow.

• Large Opening: Large opening for batch loading of fresh concrete for continuous flow.

• Attachment Mechanism: Secure attachment to the top of the tremie pipe to maintain flow and prevent issues such as segregation and washout.

• Material: Steel or heavy-duty vinyl. Built to last in the construction environment.

• Size Options: Available in various sizes to fit different tremie pipe sizes.

Applications and Best Practices for Concrete Underwater

Tremie hoppers are used in underwater construction and deep foundation projects for:

• Concrete Underwater: Bridge piers, offshore platforms and other marine structures. Specialized tremie pipes are essential to pour concrete underwater, preventing issues like cement washout and segregation.

• Deep Foundation: Diaphragm walls and piles.

• Limited Access Areas: Tunnels, subway stations and other tight areas.

Follow these best practices to get the best out of your tremie hoppers:

• Proper Attachment: Attach the hopper to the tremie pipe.

• Continuous Flow: Keep fresh concrete flowing into the hopper.

• Foam Rubber Plug: Use a foam rubber plug to seal the bottom of the tremie pipe before pouring concrete.

• Gradual Raising: Raise the tremie pipe as the concrete fills up to get smooth and controlled placement.

Concrete Underwater Pouring

Concrete underwater pouring is a complex process that requires specialized equipment and techniques to ensure a successful pour. One of the most critical components of this process is the tremie pipe, a long, vertical pipe used to place concrete underwater or below the ground surface. The tremie pipe is designed to provide a smooth and controlled placement of concrete, minimizing the risk of segregation and washout.

When pouring concrete underwater, it is essential to maintain a continuous flow of concrete to prevent air pockets and ensure a uniform placement. The tremie pipe is typically used in conjunction with a foam rubber plug, which is inserted into the pipe to prevent water from entering the pipe and mixing with the concrete mix. The plug is then removed, allowing the concrete to flow into the placement area.

To ensure a successful underwater pour, it is crucial to maintain the integrity of the concrete mix. This can be achieved by using a high-quality concrete mix that is specifically designed for underwater applications. The mix should be poured slowly and continuously, with the tremie pipe remaining immersed in the freshly placed concrete to prevent turbulent water contact and potential cement washout.

In addition to the tremie pipe and concrete mix, other specialized equipment is often used in underwater construction, including heavy-duty vinyl products such as the Tremie Elephant Trunk. This product is designed to attach to a hopper and provide a flexible and durable connection for pouring concrete underwater.

Safety Considerations for Tremie Concrete Pouring

When working with tremie pipes and pouring concrete underwater, safety is a top priority. Here are some essential safety considerations to keep in mind:

1. Proper Training: Ensure that all operators are well-trained in the use of tremie pipes and underwater concrete pouring techniques.

2. Equipment Maintenance: Regularly inspect and maintain tremie pipes and accessories to prevent clogs and damage.

3. Batch Control: Ensure that each batch of fresh concrete is introduced quickly to maintain continuous flow and prevent premature setting.

4. Flow Control: Monitor the flow of concrete to prevent air pockets and ensure a uniform placement.

5. Upper Surface: Ensure that the upper surface of the concrete is properly finished and that the tremie pipe is removed slowly and carefully to prevent damage to the surrounding concrete.

6. Personal Protective Equipment: Ensure that all personnel involved in the pour are wearing proper personal protective equipment, including hard hats, safety glasses, and gloves.

7. Emergency Procedures: Establish emergency procedures in case of an accident or equipment failure, including a plan for evacuating the area and providing medical assistance if needed.

By following these safety considerations and using specialized equipment such as tremie pipes and heavy-duty vinyl products, you can ensure a successful and safe underwater concrete pour.

Advantages

Using a tremie hopper has many advantages:

• Smooth Placement: Concrete placed smoothly underwater or below grade.

• Less Segregation: Reduces the chance of segregation and washout of the concrete mix.

• More Efficient: More efficient and productive in underwater construction and deep foundation construction projects.

• Better Quality: Better and more reliable concrete placement.

Related Products and Accessories for Tremie Pipes

Tremie hoppers are used with other related products and accessories:

• Tremie Pipes: Vertical pipes for concrete placement underwater or below grade, essential for projects that pour concrete underwater using specialized methods to prevent cement washout and segregation.

• Heavy-Duty Vinyl Products: Tremie Elephant Trunk to attach to the hopper and tremie pipe.

• Foam Rubber Plugs: To seal the bottom of the tremie pipe before pouring concrete.

• Concrete Mix: For underwater and deep foundation applications.

Use these with your tremie hopper to get the best results.