How does a grout pump work?
On the job, grout discharged from a ready mix truck passes through a grate covering the pump hopper, which screens out oversized ag- gregate that can block the pump. During the pressure stroke, the inlet valve closes, the outlet valve opens, and the piston pushes the grout from the tube into the pipeline (Ref.
Why do you grout pump bases?
In addition to strength and stiffness, grouting locks the pump base to the foundation, making it heavier. This helps maintain the shaft-to-shaft alignment, reducing wear on the moving parts. Proper alignment minimizes wear on parts, which helps reduce the repair cost down the road for the end user.
Can you pump epoxy grout?
Epoxy grouts, for example, are very tough to pump. You need a pump with power and minimal exposure of moving parts to the epoxy. Even many cement grouts are tough to pump.
How thick can you grout?
There is no standard for grout joints. According to the TCNA, the grout width can vary depending upon the size of the tile. Many stone and tile manufacturers suggest that grout joints be no less than 1/8″ to 3/16″.
What is Grout pumping?
Grout pumps can be used to fill small voids and door jams and they are available in either manual, electric, gas, hydraulic and air powered. Concrete pumps are strong enough to lift up many stories and even lift slabs of concrete.
Why grouting is required?
What is grout and why do you need it? Grout is used as a filler for the joints between tiles once the tile you are installing has been set. it helps keep dirt and debris from getting in between and under your tile. It adds rigidity and strength to the tile installation.
What is machine grout?
Machinery grout is a material; either organic (such as an epoxy) or inorganic (in the case of cement-based materials) that serves as a filler between the bottom of the machine base and the top of the concrete foundation or metal equipment skid.
What is column grouting?
The assemblage of an exposed column base plate connection includes the steel column, base plate, anchor rods, concrete footing and grout. The grout is used for the ease of the column’s erection; the exposed part of the anchors can be adjusted during erection before pouring the grout.
Can you pump grout?
You need a pump with power and minimal exposure of moving parts to the epoxy. Even many cement grouts are tough to pump. The desire for fast strength gain, high temperature resistance, and high compressive strength can make cement grouts too unruly to pump consistently.
What’s the best way to Grout a pump base?
Pour the grout from a head box that is positioned at an elevation higher than the baseplate to provide a static head for the grout to flow. Try to avoid pushing or rodding the grout into place because it creates air entrainment and voids. It is acceptable to pump the grout in place with different and specific appliances for that purpose.
What are the characteristics of a pump grout?
Grouts for pumps should possess the following characteristics, since grouting pumps can be more complex and harder to accomplish than flat base equipment. Meets CRD C-621 at a flowable consistency. Flow 4 ft. horizontally with 3″ clearance in 80 seconds. Provide good base plate contact at above flow. Have low exotherm at 6″ to 8″ thickness.
What happens to the epoxy grout on a pump?
Epoxy grouts “set” or lose their fluidity while still hot. As they cool down, so does the steel pump base, of course. Unfortunately, the epoxy material, with twice the coefficient of thermal expansion of the steel base, contracts twice as much as the steel does and can pull away from the underside of the base.
How is the curing time for grout determined?
Curing time for grout, especially epoxy grout, depends on the ambient temperature. If the site is too hot or cold, steps must be taken to change or control the situation, such as temporary insulated shelters or shade from the sun and heat. Never let rain fall on equipment during this process.