The transcript provided is a detailed explanation of a scientific experiment conducted to test the durability of different types of concrete columns under hydraulic pressure. The experiment was conducted by a civil engineer and a friend, Mert, who is also a civil engineer. They are examining the effects of different construction practices, specifically the use of unsifted sea sand and the addition of water to ready-mixed concrete, on the strength and durability of concrete columns.
The experiment involves the creation of two sets of concrete columns. One set is created using the regulations that were in place before 1999, which allowed for the use of unsifted sea sand and water in ready-mixed concrete. The other set is created using the regulations that came into effect after 1999.
The concrete columns are then subjected to a hydraulic press to measure their durability. The pressure applied is based on the weight of the concrete columns, with the goal of simulating the effects of an earthquake.
The experiment is conducted in a scientific manner, with the concrete mixtures and the pressure applied being measured and recorded. The results of the experiment are then compared to discuss the effects of different construction practices on the strength and durability of concrete columns.
The experiment aims to provide insights into the construction practices that led to the high number of casualties during the 1999 earthquake in Turkey. The researchers hope that by understanding these practices, they can help prevent similar tragedies in the future.
In conclusion, the experiment provides a detailed analysis of the effects of different construction practices on the strength and durability of concrete columns. The results of the experiment could potentially be used to improve construction regulations and practices, thereby reducing the risk of future building collapses during earthquakes.
Here are the key facts extracted from the text:
1. The construction site has approximately 21 tons of concrete.
2. The concrete used is called C30.
3. The concrete is poured into a pump and then into the construction site.
4. The concrete is checked by taking samples from every concrete truck.
5. The samples are checked again a day later to ensure they are suitable after freezing.
6. The state requires the use of cement that meets certain standards for building construction.
7. The use of sea sand and sea shells in construction can lead to problems, such as reduced strength and increased risk of collapse.
8. The addition of water to ready-mixed concrete can lead to a reduction in strength.
9. The use of crushed stone instead of round stone can improve the strength of the concrete.
10. The use of iron in construction can improve the strength of the concrete and help it withstand earthquakes.
11. The real strength of concrete is typically reached after 28 days.
12. The use of a hydraulic press can be used to test the strength of concrete.
13. The addition of water to concrete can reduce its strength by up to 50%.
14. The use of iron in construction can improve the strength of the concrete by up to 100%.
15. The state has minimum standards for the strength of concrete used in building construction.
16. The use of ribbed iron can help prevent the concrete from peeling.
17. The use of a press that can press 15 tons is not enough to break the strongest concrete sample.
18. The strongest concrete sample was able to withstand a pressure of over 200 tons.