Interesting fact about concrete
1. Concrete is the most used material in the world
The aggregates and water used to create concrete are available almost everywhere. There are several billion tons of concrete used each year and it is China that consumes the most.
There are some in the infrastructure, the roads and the foundations of a house ...
We use 6 m000 / year, that's huge!
2. Concrete and cement are not the same thing
I often hear "you make cement pots", no, concrete is not cement and cement is not concrete. In the end, about 10 to 15% of the concrete is made up of cement, itself mainly composed of lime; between 60% and 65% is made up of an aggregate such as gravel or sand and 15-20% is water. In addition, I add adjuvants which further reduce this percentage.
3. Concrete is very old and still exists
“It formed naturally in Israel twelve million years ago, and the ancient Egyptians used a type of concrete in the pyramids at Giza; but it was the Romans who captured the talent of concrete. The most famous, the Pantheon in Rome, built around 120 AD. AD, is still the largest unsupported concrete structure in the world. ”
4. Portland Cement
I use Portland cement and have learned that it is named like that because of its lime-like color.
5. Very high compressive strength
The pressure per square inch (PSI) is on average between 3 and 000, but can reach up to 7. In fact the Colosseum and some concrete walls that still stand still testify to this. Finally, there is the CONCRETE GFRC which is even stronger. Otherwise, when concrete is reinforced with steel, it is even more rigid and durable, since it is free from corrosion. Fiberglass is also used to reinforce concrete, even more frequently than steel. For example, LH Lafontaire hospital was able to have 000 additional floors using GFRC. It is lighter and stronger.
6. The word concrete comes from the Romans
The word "concrete" comes from the Latin word "Concretus", which roughly means "to grow together".
7. Concrete cures over several weeks, so it gets stronger over time.
After a month, the concrete reaches 90% of its strength, but it still continues to do so after. This is why a freshly made concrete pot is not quite solid yet. It takes patience and it will last a very long time. An advantage and a drawback at the same time.
8. Three Gorges Dam - China
The most difficult and longest dam project, indeed it took 17 years to do it. From 1995 to 2006. It took 16 million cubic meters of cement to build it, making it the largest concrete dam in one project. We are not talking about maintenance here, which requires more concrete pouring over the years.
Thanks for reading, hope you learned a bit more about concrete, click on the links above for more information.
Myriam - The mimipots