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Components of Concrete Block Making Machines

9/6/2013 12:58:35 PM | by Anonymous

Concrete Block Making Machines

Concrete block making machines can vary in terms of the rate of their block production and whether they are manual or fully automated. Manual machines produce blocks at a slower rate compared to automated ones. Typically, a manual machine produces two to four bricks at a time, so in a day about 100 blocks are produced. Automated machines usually produce eight to sixteen blocks per time and large, fully automated set-ups can produce thousands of blocks per day.


Concrete block making machines are made up of five main components. Firstly, a steel framework is used to keep all the other parts fixed in place. A chute or a hopper is used to pour the wet cement into the frames. After the cement is poured into place, a tamper is used to compress the wet cement into the mold. In a manual machine, gravity is used to drive the tamper down but in automated machines a hydraulic or pneumatic ram is used. Cement is added and compacted until it can no longer be compressed. All the while, machines keep the mix vibrating until they are transferred out of molds for drying and curing, though the use of another mechanism.


After that, the blocks are laid out either on steel racks, concrete floor or wooden pallets and are allowed to fully harden for a day under cover. After that they are taken outside and are cured, where they are placed in a large steam kiln and then left outside for one to two weeks to reach full hardness.


There are many different kinds of concrete blocks, ranging from their design to their composition. Some may be hollow, either to provide insulation or reduce weight. Others might be U-shaped or have notches to allow horizontal reinforcements to be placed in the cavity. Other bricks might have jamb ends, so that doors can be attached to them or they might have grooved ends so that control joints can be made. Blocks might also be shaped in a way that is meant to be decorative. To suit the different of brick to be made, the machine might have several different kinds of molds that vary in their shape and size.


The type of cement used differs. For bricks, the cement typically used has less water than the cement used in other types of construction and is made up fine sand and stone.


The types of concrete block making machines also differ according to features that they have. Some machines have wheels so that as blocks are produced, they are laid on concrete floor and the machine moves to another position, thus wood or steel pallets are not needed and the amount of manpower needed is also reduced. Machines that have moulds and tampers operated by systems such as hydraulic cylinders also compact the cement more efficiently, creating a stronger block and reducing the amount of cement used. Machines should be made of materials that are durable and resistant to corrosion and maintained regularly in order for them to perform optimally.


When choosing a concrete block making machine, it is important to consider factors such as cost and the quality and quantity of the blocks that are being made. For example, the quality and strength of bricks that are used in building things like buildings is extremely important as the safety of the structure depends on the bricks. In big businesses, an automated machine would be needed to meet the high demand for blocks, but for smaller ones, a manual machine could work just as well. It is also important to consider the type of molds that will be needed and whether they fit the machine that you plan to buy.

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