After more than two years of long-term construction, a high-level reservoir with an area of ​​up to 0.1 square kilometers was finally built on the north bank of the Leda River, 15 kilometers east of Lair County. (For the cause, please refer to "The King of German Mercenaries" Chapter 308)
This high-level reservoir is as high as 20 meters and consumes a lot of bricks, cement and steel bars. Among them, the bottom of the reservoir is laid with bricks and coated with cement as a guarantee of leakage. Reinforced concrete is used around it. Of course, it is not pure reinforced concrete, otherwise Marin does not have so many steel bars. The surrounding walls are built with bricks first, and then reinforced concrete is added. Although it is incomparable to the solidity of large reservoirs in later generations, it is also a small reservoir, and the strength around it is sufficient.
The water in the reservoir comes from the Leda River. The craftsmen arranged dozens of Dutch windmills to deliver water to the high-level reservoir day and night. The water in the reservoir has a discharge channel to the north. But in this discharge channel, there is a row of hydraulic forging hammers working endlessly.
Because the water level of the reservoir is too high, I am afraid that the water lifting method of the Dutch windmill is not reachable, the craftsmen built an indirect relay pool, which is also a cement pool. Through relay pumping, the ability to pump water into a 20-meter-high reservoir was achieved.
However, such a huge siege took Marin's 200,000 gold coins and more than two years of construction. However, Marin had no choice, because the northwest of Germany was plains, and there was no place with high water levels. Unlike England, there were many high drop rivers suitable for promoting water conservancy machinery in the mountains.
He was really helpless, Marin wanted to use hydraulic machinery again, so he built a personal high-level reservoir. However, he didn't expect the cost to be so high. Originally, Marin planned to build a high-level reservoir of 1 square kilometer, but the estimated cost was 1 million gold coins at the time, which scared Marin. So, it was later modified to 0.2 square kilometers. However, as the repair was completed, it found that the cost might be higher than expected. So, it was changed to 0.1 square kilometers. However, it still consumed 200,000 gold coins. The main reason is that the price of steel was too expensive. If Marin had not built an iron-making blast furnace and steel-making open furnace by himself and used the high-priced steel of the same era as steel bars, the cost would have steadily exceeded one million.
Although the water storage capacity is insufficient, because dozens of Dutch water trucks keep pumping water, there is no need to worry about insufficient water. Therefore, the row of hydraulic forging hammers is very sufficient to start construction.
When Marin inspected this reservoir and the supporting forging base, the craftsmen confidently stated that in the future, plate armor forging will become a pediatric department and can be mass-produced quickly...
Marlin was very happy that although the plate armor will eventually be eliminated by muskets. However, when muskets in Europe are not very popular, the plate armor is still very popular in Europe for now. Because of this kind of hydraulic forging hammer, the speed of producing plate armor at the forging base will not only accelerate, but also greatly reduce the cost.
Moreover, hydraulic forging hammers can not only be used to build plate armor, but also to forge weapons such as swords. Plate armor will be eliminated within decades, but swords have a longer vitality than plate armor. At least, cavalry persisted until the first half of the 20th century when machine guns were popular. Cavalry was naturally cavalry swords.
Looking at the large row of hydraulic forging hammers, Marlin was eager to try it out - he was ready to be an international weapon supplier. Of course, it was not to sell advanced weapons such as missiles and aircraft, but to sell low-end weapons such as plate armor and swords. Moreover, selling such weapons also had a lot of profits.
Touching the tall walls around the high-level reservoir, Marin felt what it means to be firm and solid. So Marin wanted to use reinforced concrete for his own city of Orich...
Over the past two years, the steel bars of Marin's steel plant have been basically used to repair reservoirs, and so have cement. Now, the high-level reservoir has been repaired, which means that the products of the steel plant and cement production base are sold. So Marin decided to add reinforced concrete to the outside of the Orich wall, making the Orich a city that cannot be bombarded.
You know, Orich is Marin's lifeblood, with his wife and children. If he was fighting outside, Orich was defeated and his wife and children were killed, then he would not know how to deal with it. If his wife and children die, what is the point of winning the great country? It would probably fall apart like the Alexander Empire...
Therefore, the sturdiness and safety of the city of Orich are also very important.
However, once cement is used to build the capital, then cement will be publicly carried out in front of the world. After all, Orich is the capital, and there are many foreign envoys who come and go, so it is impossible to keep it confidential.
Therefore, Marin decided to learn the plots in some novels, which are called the Roman volcanic ash...
But, fuck, I don’t have a territory in Italy. Therefore, I need to find a reason. For example, I discovered a volcano in my own colony, where volcanic ash suitable for construction...
Volcanic ash cement is actually a very good building material. Marin studied history. When he was studying in his previous life, the teacher introduced that Roman volcanic ash cement is a process of mixing volcanic ash and quicklime to form mortar, and then mixing it with volcanic tuff of different particle sizes to form a wood-like structure, adding seawater to trigger a thermal chemical reaction.
Although this volcanic ash cement is average, it has a very powerful characteristic - it can withstand wind and rain erosion. The ancient Roman cement buildings in Rome still stand firm even in the 21st century. Unlike the teaching building of the university where Marin studied in his previous life, which was built in 1996, the walls were cracked... Fortunately, there was no earthquake in the eastern plain area. If it were replaced with an unstable crust in the western region, this building quality would kill a whole building of college students...
This chapter is not over, please click on the next page to continue reading! Of course, this is because some black-hearted merchants use unqualified materials. However, ordinary Portland cement is not as resistant to wind and rain as Roman volcanic ash cement, which is true.
Of course, that refers to ordinary Portland cement. The cement made of Marin uses the remaining fly ash after coal combustion has good crack resistance, corrosion resistance, and is no worse than Roman cement.
The only problem is that it requires a large amount of fly ash. It just so happens that Marin uses a lot of coal to cook salt, so there is a lot of fly ash, which makes the raw materials for fly ash cement sufficient. Some people may not be able to get so much fly ash.
Moreover, in Western Europe, the Ruhr area and the United Kingdom were rich in coal. This was also the main reason why Britain and Germany could become industrial powers back then. The French wanted to become industrial powers, but they lacked coal. So, they later became usury empires...
As for Spain and Italy, they cannot develop in the 19th century, and they cannot blame others for being idiots. Instead, there is really no coal in both countries... You said that this steam engine burns coal, and does not have coal, and develops a ghostly modern industry...
Even the rise of China is inseparable from the massive coal reserves. Without the dust all over the sky, how can it develop? Everyone can become a developed country by writing poetry and bragging?
Marin must keep the cement formula confidential. Even the method of making Roman volcanic ash cement must be kept confidential. As for others, Marin said that this is a special volcanic ash mined from overseas. This kind of thing is also available in Rome. Well, you can go to the city of Rome to have a look... Now, there should be such volcanic ash on the Italian Peninsula... After all, Pompeii was buried by volcanic ash... Otherwise, you can excavate Pompeii? Not only can there be volcanic ash, but also valuable antiques...
As for other countries, such as Britain and France - I'm sorry, your country has no volcano, so I can't do anything about it. Otherwise, the French demon, you continue to steal Italy?
As for the issue of technical leaks, this era is unlikely. Why? Because there is very little population movement in this era. Because it is still in the era of serfs, the freedom of serfs is restricted and they cannot leave the manor at will. Therefore, there are very few foreigners in various places. As long as the base is set up in the countryside, instead of a city with many eyes, the confidentiality can be guaranteed. Want to catch a spy? Check who is a foreigner, and just arrest and torture it... As long as the craftsmen are controlled well, the possibility of leaking secrets is very low... Therefore, Malin has always chosen serf craftsmen to control it. If it is a civilian craftsman like a man, it will be difficult to control and it is very easy to leak secrets...
Chapter completed!