Injection Machine & Accessories

Injection machines and accessories are essential in applications involving injection grouting for structural repairs, foundation reinforcement, waterproofing, and other civil engineering projects. Here’s a detailed guide to processes and application solutions for injection machines and their accessories.

 

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I. Common Applications of Injection Machines and Accessories

    Crack Injection for Structural Repair: Injection machines fill structural cracks with materials like epoxy or polyurethane to restore integrity and prevent water infiltration.

    Soil Stabilization and Foundation Reinforcement: Machines inject grout into the soil to increase bearing capacity, reduce settlement, and stabilize foundations.

    Leak Sealing and Waterproofing: Injection systems seal leaks in basements, tunnels, and other structures by injecting waterproof materials that block water paths.

    Void Filling and Rock Consolidation: Machines are used in tunnel and mining projects to fill voids and consolidate weak rock formations.

II. Injection Machine and Accessories Application Process

    Site Assessment and Preparation

        Inspect the site for the type, size, and location of cracks, voids, or leakage paths.

        Determine the appropriate injection material based on site conditions (e.g., epoxy for structural repair, polyurethane for waterproofing, cement-based grout for soil stabilization).

    Selection and Setup of Injection Machine and Accessories

        Choose the suitable injection machine based on material viscosity and required injection pressure. Common machines include single-component and two-component injection pumps.

        Attach the necessary accessories, such as injection packers (ports) or nozzles, which help direct the material into the target area. For high-pressure injections, mechanical packers are recommended for secure attachment.

    Drilling Holes for Injection Ports

        Drill holes along the crack, void, or leakage path. The distance and angle of the holes depend on the crack size, material flow characteristics, and the type of grout.

        Insert injection packers or ports into the drilled holes and secure them. Packers should be spaced evenly and angled appropriately to ensure effective material dispersion.

    Mixing and Preparing Injection Material

        Follow the manufacturer's instructions to prepare the material, ensuring thorough mixing if it’s a two-component system (e.g., epoxy resin).

        Load the material into the injection machine. For high-viscosity materials, a high-pressure injection pump may be necessary to ensure flow through narrow cracks.

    Injection Process

        Start the injection process at the lowest port or packer, gradually increasing the machine pressure to push material into the cracks or soil.

        Monitor the pressure and material flow, adjusting as necessary to avoid excessive force, which could damage the structure or cause leaks.

        When material begins to flow from the next port, seal the first port and move to the adjacent one, repeating this process until the entire area is filled.

    Curing and Removal of Injection Ports

        Allow the injected material to cure based on the material’s specifications. Curing times vary but generally range from a few hours to 24 hours.

        Once cured, remove the packers, clean the injection area, and patch the drilled holes if necessary.

III. Example Application Solutions

    Structural Crack Injection Solution

        Machine and Accessories: Use a high-pressure single-component injection machine with mechanical packers.

        Process: Drill holes along the structural crack and install packers. Inject epoxy resin to bond the crack, restoring structural integrity. Seal the ports after curing.

    Soil Stabilization and Foundation Reinforcement Solution

        Machine and Accessories: Select a two-component injection pump for cement-based grout, with robust injection hoses and high-capacity packers.

        Process: Drill holes around the foundation at specific intervals. Insert packers and inject the grout under high pressure to fill soil voids and increase load-bearing capacity. Allow for curing to achieve desired soil strength.

    Basement Waterproofing Solution

        Machine and Accessories: Use a low-pressure polyurethane injection machine with chemical-resistant packers.

        Process: Drill and install packers along the basement wall cracks. Inject polyurethane grout, which expands to block water flow. Remove packers and patch holes after curing.

    Void Filling for Tunnel Support

        Machine and Accessories: Use a high-output injection machine capable of pumping large volumes of grout, along with high-durability hoses and valves.