Concrete Pump Technical Summary Concrete Pump Shotcrete Pump

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Concrete Pump Technical Summary

Concrete Pump Technical Summary

Concrete Pump / Shotcrete Pump Wet-Process Shotcrete (just called “Shotcrete”) Concrete Pump Question: Which

Concrete Pump / Shotcrete Pump Wet-Process Shotcrete (just called “Shotcrete”) Concrete Pump Question: Which concrete pumps are suitable for shotcrete?

Most concrete pumps today use the 2 cylinder “plunger”-type pump design.

Most concrete pumps today use the 2 cylinder “plunger”-type pump design.

The Swing-tube or “S-tube” concrete pump design is ideal for shotcrete pumps because it

The Swing-tube or “S-tube” concrete pump design is ideal for shotcrete pumps because it is capable of maintaining high concrete pressures required with pushing “stiff” low-slump shotcrete mixes. Also, the valve can reverse at any point in the stroke, so it is much safer than a ball-valve style pump.

Material is gravity-fed into the empty concrete material cylinder.

Material is gravity-fed into the empty concrete material cylinder.

The cylinder quickly fills with the wet shotcrete mix.

The cylinder quickly fills with the wet shotcrete mix.

A hydraulic cylinder push the material cylinder full of concrete back toward the hopper,

A hydraulic cylinder push the material cylinder full of concrete back toward the hopper, where it goes into the swing tube.

The Swing-tube or “S-tube” swings from side to side – and is constantly being

The Swing-tube or “S-tube” swings from side to side – and is constantly being fed with a cylinder filled with concrete. The tube moves from side to side extremely quickly.

Then, the cylinder full of wet shotcrete mix pushes its way through the swing

Then, the cylinder full of wet shotcrete mix pushes its way through the swing tube to the outlet. The nice, creamy cement continues to lubricate the cylinder of concrete as it passes through the swing tube (much better than a “Rock-Valve”-style pump that actually cuts the cylinder of concrete in half. The “Rock-Valve” style also does not have high enough concrete pressure for many shotcrete jobs AND tends to make the hoses “kick” or move much more than the s-tube design. )

A hydraulic block controls the 2 hydraulic circuits - #1 is swing-tube shifting, #2

A hydraulic block controls the 2 hydraulic circuits - #1 is swing-tube shifting, #2 is concrete cylinder shifting. They move in perfect harmony for smooth pumping.

A large accumulator quickly switches the swing tube from one cylinder to the other,

A large accumulator quickly switches the swing tube from one cylinder to the other, so there is very little pulsation or “kick”.

The wet material goes through the swing tube and the outlet where it is

The wet material goes through the swing tube and the outlet where it is pushed through reducers, hoses, and the nozzle.

High horsepower and concrete pressure are required for pumping long distances or pushing very

High horsepower and concrete pressure are required for pumping long distances or pushing very low-slump shotcrete mixes

High horsepower and concrete pressure are required for pumping long distances or pushing very

High horsepower and concrete pressure are required for pumping long distances or pushing very low-slump shotcrete mixes

High horsepower and concrete pressure are required for pumping long distances or pushing very

High horsepower and concrete pressure are required for pumping long distances or pushing very low-slump shotcrete mixes

Pumps offer different horsepower and concrete pressure combinations for different shotcrete applications. SERIE A:

Pumps offer different horsepower and concrete pressure combinations for different shotcrete applications. SERIE A: A 30 HP A 40 HP SERIE B: B 20 HP B 50 HP B 60 B 70 SERIE C: C 50 SS C 70 SS C 90

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