The concrete cutting machine looks like a massive power saw. It emits a very loud buzz, and is powered by hundreds of volts of electricity. The blade is about the size of a dinner table, and it is mounted on an arm that extends from the machine’s base; it can be moved up and down to cut steel beams in the middle of a building.
To use one these machines, you don’t just have to know how to use tools. You also have to be able to improvise and design something that will work for as many as maybe five thousand different applications—a skill which experts call “machine design.”
The way to do this is to learn how all the different things in a building are supposed to work together. You need to look at everything that helps make the building work, and you need to think about what happens when they break or stop working. The world’s tallest building has a basement under which are two water tanks, two fire-fighting pumps, four elevators, and an electrical generator. If any one of them fails, the building won’t work anymore.
You can’t just put all these parts into a drawing program and figure out what they all do without any knowledge of how they’re supposed to fit together; you have to understand
“Concrete cutting machines” is a phrase that makes me think of dull-looking industrial robots that rumble into the wreckage of an old building site and hoover up a huge lump of concrete. But these machines are actually used to make concrete piles, which are a lot more fun.
I have been cutting concrete for about 15 years now, and I love it. Here’s why.
For one thing, concrete is fun. You make it yourself, so you can be particular about how it looks and feels when it is finished. It’s not just a pile of stuff, but a real thing: you can walk around on it, see what you’ve made and what you’ve left over, see where the edges of the blocks overlap.
You can make all kinds of designs with concrete, from simple square-sided cubes to complicated shapes with lots of curves in them. It’s easy to change the shape – throw in a trowel or two if you want an hour’s work done in 10 minutes.
You can also use concrete as part of a landscape – plants will grow through it (it’s called “living stone”), and the look changes with time too: the colour changes with the weather and the way it is used (leaves blow
For the future, I would like to see research in concrete cutting machines. There are a few concrete cutting machines now, but they are not efficient enough. They do not give great value to the money invested in them.
In the past, people have made concrete cutting machine for a long time. But it is very hard to make an efficient concrete cutting machine now. It should be easy to make an efficient concrete cutting machine these days.
The key to concrete cutting is the steel blade, which works as a scalpel to slice through the cement. The blade is attached by a pivoting arm to the “sculptor,” an airplane-like machine that makes the cuts. In your own garage you can make a sculpture in concrete with a hand saw, but it takes time and trouble. The sculptor solves this problem, by reducing the time and effort: it cuts much faster than you can move the saw around, so you can keep working on your sculpture while it’s being cut.
The sculptor also allows for adjustments to make the cuts just right. If there’s an imperfection in the shape of your sculpture, or if you want to make a second version of it, it’s easy to adjust the cuts so that they match up exactly.
In concrete cutting, the question is not if you make a mistake, but what kind of mistake. A mistake that causes your concrete to crumble, for example. This is an area where mistakes can kill people.
There are two main kinds of concrete cutter: the ones that cut through the slab, and the ones that cut into it.
The ones that cut into the slab are called “through-cutters” or “vertical-cutters”—and they’re the more dangerous ones. They’re made by cutting away part of the slab at a time. Every time they cut through concrete they leave a little hole in it, and every time they cut through steel reinforcing bars they leave a big hole in them.
If you want to make sure your through-cutter won’t cause any trouble, you’ll want to use one with as few holes as possible—preferably none. So you find out how many holes it has, and find out how many holes it will take to make up for those it has already left around the edges. Or maybe you just quit using vertical-cutters altogether and go with horizontal-cutters instead—but since these have fewer holes in them too, this might not be the best choice either.
They’re also
Concrete is a combination of sand and cement. The sand is a coarse aggregate, the small pieces of material that go into concrete. The cement is a fine powder which will hold the aggregate together when it sets, allowing it to harden into a solid mass.
The finest aggregate is typically between 200 and 250 microns in size, while the coarsest aggregate is 1,000 millimetres in size. It’s not easy to get the right size of aggregate. It all depends on what you’re trying to make, but it’s generally easier if you have an abundance of small rocks and pebbles in your garden or field instead of lots of big ones. And if you want a really hard surface, smaller particles will give you a better result than bigger ones.
The end product shouldn’t be too rough, though. If it’s too rough, it won’t set properly and will crack later on. And if it’s too smooth or too slick, it won’t be able to support anything heavy (so no gates or fences). Concrete is usually made from aggregates that are between 35% and 70% by weight cement by volume (the rest being water).
There are two kinds of concrete: normal concrete and reinforced concrete.
Normal concrete is made by mixing cement and gravel. Reinforced concrete is made by mixing cement with steel rebar–the kind used in building construction.
In normal concrete, the gravel holds the cement together, but the steel rebar keeps it from flowing under the pressure of the water. In reinforced concrete, both the gravel and the steel rebar are included in the mix. You can see why this works: all that is needed to make reinforced concrete is a supply of steel bars and a supply of cement. It’s like making ice cream out of a box of frozen yogurt.