Cement grouting pump

Types of Cement Grouting Pumps

A cement grouting pump is an equipment designed to inject or pump grout into porous soils or rock formations, space or voids between soil or rock particles, and along fissures or fractures. There are many types of cement grouting pumps, some of which are industrially used.

• Piston Grouting Pumps

  Cement grouting pumps of this kind have one or more pistons that are moved by hydraulic pressure or mechanically to inject grout into the desired location. Pumps with double-acting pistons offer more efficiency, as the pistons exert pressure on the grout both during the forward and backward motion. Piston grouting pumps can be used with light or heavy cement mixtures. Heavy mixtures demand the use of heavy-duty pumps.

• Pressure Grouting Pumps

  These pumps are placed under higher pressures to enable better control over the flow rate and consistency of the injected material. The pumps are powerful tools that help fill voids, cracks, and cavities effectively with the desired material. They can also be used to consolidate soil or rock formations.

• Electromagnetic Grouting Pumps

  The electromagnetic cement grouting pump works with the flow of electric current through a coil that creates a magnetic field. The magnetic field forces the fluid to flow in the desired direction. Electromagnetic grouting pumps are used where the fixed installation is required, but a pump with adjustable flow rates is necessary.

• Peristaltic Grouting Pumps

  A peristaltic grouting pump operates on the basis of the peristalsis principle. In the provided context, a peristaltic pump moves the fluid or mixture to be injected by means of rolling elements that are big and rotated around a radius. Those elements compress a hose or tube with the grouting material inside, which is then moved through the tube by the releasing pressure. Peristaltic pumps are a preferred choice when the need arises for the transport of fluids that contain solid particles or are corrosive in nature.

• High-Pressure Grout Pumps:

  The high-pressure grout pump is often called upon to exert pressure that is higher than normal. The pump is often used when the consolidating of soil or rock formations is called for or when the injecting of material into a specific location has to be done accurately.

• Multi-Channel Grout Pumps

  The multi-channel pump is capable of operating simultaneously using several channels within the pump. This ensures that the injection process is done at higher pressure and rate levels.

Specifications and maintenance

The functionality of a grout pump depends on its specifications. They indicate the kind of work the pump can handle. Knowing the specifications helps business buyers to choose the right pump for their work. Besides, it helps buyers know the kind of maintenance the pump requires.

• Capacity

  This refers to the amount of grout the pump can handle within an hour. It is measured in liters per hour (l/h) or gallons per minute (gpm). Different pumps have different capacities. For instance, a small handheld pump can handle 0.6 to 3.8 l/h. On the other hand, a large capacity pump used for high-pressure applications can handle 159 to 227 l/h. Pumps with high capacity helps to complete projects faster. To maintain the capacity of the pump, operators should conduct grout pump cleaning after each use. Regular pump cleaning prevents blockages that lower capacity.

• Pressure

  Cement grout pumps produce pressure strong enough to force grout through pipes and holes. The pressure is indicated in pounds per square inch (psi) or bar. Handheld pumps usually produce less pressure, around 20-60 psi. High-pressure pumps are needed for deep foundations, large construction projects, and mining applications. To maintain the pressure of the pump, buyers should follow the manufacturer's instructions. They should use the grout recommended for the pump. If the wrong material is used, the pump may get blocked or fail to produce the required pressure.

• Power source

  Cement pumps can be pneumatic, electric, or petrol/diesel engine-powered. The power source affects the location where the pump can be used. Customers can consider the recommended power source for their project and choose a pump that has it. To maintain the pump's power source, buyers should create a maintenance schedule. The schedule should be based on the manufacturer's instructions. Parts like filters, drives, batteries, and motors should be checked and serviced according to the schedule. This ensures the pump is always powered efficiently.

• Dimensions

  These are the length, width, and height of the pump. It shows how large or small the pump is. Grout pumps with large dimensions are suitable for large construction projects, mining, and groundwork. Small dimensions are suitable for most construction projects on uneven terrain that require portability. To maintain the dimensions of the pump, users should handle it with care during installation and transportation. They should use equipment like cranes or forklifts when moving the pump from one location to another. This minimizes the risk of damage that can affect the pump’s dimension.

Scenarios

The cement grout injection pump has wide usage across many industrial sectors. Here are some examples of where cement grout pumps are used:

• Civil Engineering and Structures

  The cement grout injection pump is commonly used for filling voids, cracks, and cavities in structures. Additionally, the pump efficiently fills post-tensioning ducts and anchors in bridges and high-rise buildings. Also, it helps improve the load-carrying capacity of structures by stabilizing the soil through grouting.

• Mining and Tunneling

  In the mining and tunneling sectors, the cement grout injection pump fills joints and cracks in rock formations. It also enhances the stability of rock masses and tunnel linings through ground consolidation. Furthermore, the pump provides water shutoff in underground excavations and prevents inflows of groundwater.

• Hydraulics and Pipelines

  Cement grout injection pumps can coat and repair pipelines and provide reinforcement to the liners. They also fill voids around hydraulic structures, including those near pipe penetrations. Besides, the pumps offer water resistance in hydraulic structures like filters and roadway pipes.

• Geotechnical Engineering

  The cement grout injection pump facilitates ground stabilization by creating contiguous and secant grouted piles. It also helps to form grout columns, which improve soil properties. Moreover, the pump can fill voids and cavities in the soil through permeation grouting.

• Construction and Repair

  Cement grout injection pumps repair damaged foundations, settlements, and structural cracks. They also provide waterproofing solutions for constructed tunnels and basements. Additionally, the pumps enhance the load-bearing capacity of foundations by stabilizing the soil through grouting.

• Marine Applications

  In marine applications, the cement grout injection pumps create underwater barriers and seals. They also stabilize marine structures like piers, docks, and coastal defenses. Furthermore, the pumps can fill voids and cavities underwater through permeation grouting.

• Petroleum and Natural Gas

  The cement grout injection pump is used to seal annular space in well casings and provide conduit for insulating and protecting cables. It also offers zonal isolation within geological formations. Moreover, the pump prevents fluid migration within wellbores.

• Water Treatment and Environmental Remediation

  Cement grout injections are used to stabilize contaminated soil and create impermeable barriers to prevent the movement of pollutants. They can also be used to fill abandoned wells and cavities. Besides, the pumps offer the grouting of soil and formations to reduce permeability and increase soil cohesiveness.

How to choose cement grouting pumps

Both manual and electric cement grouting pumps can be used to inject various types of grouts into different kinds of soils and rocks. However, some of the parameters that buyers should take into consideration before purchasing a particular type or model of a grouting pump are the pump's output pressure, flow rate, size, and weight, along with other parameters.

• Output pressure: Buyers should note the output pressure that the pump delivers, as this will determine whether the pump can effectively inject the particular type of grout that needs to be injected at that pressure.
• Flow rate: The flow rate of the pump will determine how quickly the grouting can be done at the site where the pump is being used. Some pumps can provide a flow rate up to 20 liters per minute.
• Size and weight: If the grouting pump needs to be carried to different locations or moved around a construction site, then it is better to buy a lighter and more compact pump. By doing so, manual handling will be easier. Additionally, it will occupy less space if it needs to be stored away.
• Power supply: Whether an electrical, manual, or pneumatic grouting pump is required will also depend on the power supply available at the construction site. If electricity is not available, then a manual or pneumatic pump will be a more suitable option. In contrast, a cement grouting pump operates with manual power if pneumatic pressure is chosen.
• Compatibility of grout: Not all pumps can be used to inject all types of grouts. Therefore, it is important to note the compatibility of the grout with the pump that is under consideration for purchase.
• Injection points: Before purchasing a grouting pump, it is necessary to determine the number of injection points where the grout needs to be injected. Some pumps can be used with several injection hoses, while others can only be used with one.
• Budget: Buying a grouting pump is an investment, and it is essential to determine the amount that can be spent and what features are needed in the pump and essential to negotiating a deal.

Cement grouting pump Q and A

Q1 What is the difference between a cement grout pump and an ordinary pump?

A1 The cement grouting pump is designed to handle viscous material like cement grout. It can generate enough pressure to transport the material through pipelines and hoses. Ordinary pumps are designed to handle water or other liquids with similar viscosities.

Q2 What are the common troubles of the cement grouting pump?

A2 The common troubles include leakage, blocking, malfunctioning of the motor or engine, and failing to create pressure.

Q3 What are the ways to prevent troubles with the grouting pump?

A3 Use the pump for the intended application to avoid pressure and workload exceeding the pump's capacity. Maintain the proper viscosity of the grout by adding additives and water to prevent pump breakdown. Follow the manufacturer's instructions and use the recommended replacement parts.

Q4 What are the signs that the pump needs urgent repair?

A4 Signs of wear and tear include cracks and leaks in the pump casing or housing. Checking for loose or damaged parts, wobbly, squeaking, or rattling sounds from the pump, and any signs of pump wear and tear are indications it is time for a replacement or repair service. Low or high issues with pump pressure and reduced pumping capacity are other signs that something is wrong with the pump that requires immediate attention.