Rescue System: Fleeing Host, calm down

Chapter 307 Underground City Construction 17

When everyone safely arrived at the depths of Daqing Mountain, they could see the smoke rising from the distance and the wide tents set up in a row, which was very spectacular.

What catches the eye is the well-organized large-scale excavation construction site.

In the three-meter-wide trench, in this cold winter, workers wearing shorts, sweating profusely, went into battle with hoes, shovels, and all kinds of strange tools.

Dustpans, hanging baskets and baskets are filled with brown soil and tied with hanging ropes. There is a high upright pole on the ground, which is a simple lift. The handle on the gear turntable is manually turned. The two of them work together to install it.

The loess in the frame gradually rose up with the shortened hanging rope, and was then pulled far away by a cart.

The excavated brown soil was not thrown away, but was taken to a brick kiln workshop.

In ancient times, there was no underground construction of concrete and steel structures, so we could only use local materials and develop them.

Therefore, bricks are an essential building material. After the clay tile embryos are fired and shaped, they are dried and then fired in a high-temperature kiln, which will cause a series of physical changes.

She had never come into contact with this area in her previous life. She could only fumble a little bit based on the sporadic clues provided in the mall and the knowledge she only remembered from books, such as the ratio, temperature, time, and perhaps what auxiliary materials were needed.

She can also give a rough idea: changes in mineral structure, the formation of new mineral tissue layers, decomposition and chemical combinations, and a series of fusion changes during crystallization and diffusion, and finally become products with a certain color, density, hardness, and high mechanical strength.

These processes all need to be tested one by one.

In ancient times, there were also blue-brick houses, and when bluestone was fired, the green bricks had to go through several stages: moisture removal, heating, running water, and opening the kiln.

Therefore, professional craftsmen have the best say in firing green bricks and tiles. However, some ancient technologies cannot meet her requirements, so innovation needs to be combined with reality.

The most difficult thing is not to bake bricks, but to develop cement.

Cement is mainly made of sandstone, silicate mineral iron powder, limestone and slag. During production, these ingredients need to be mixed in proportion and then ground into fine powder.

Limestone is the largest raw material used in the production of cement. The particles after mining are larger and have higher hardness. Therefore, the crushing of limestone plays an important role in the crushing of cement materials.

These raw materials are not easy to find. The system collects or looks for alternative raw materials in Daxing Mountain. For example, there are many coal gangue mountains that can be used as a substitute. In addition, there is a natural advantage here, underground volcanic rock.

Pozzolanic mixed material is a mineral raw material with natural silicon oxide and aluminum oxide as the main component. It does not harden after being ground into fine powder and added with water. However, when mixed with lime and then mixed with water, it can not only harden in the air, but also in water.

Continue to harden.

Therefore, pozzolanic cement is also a good choice.

However, cement grinding is the final process of cement manufacturing and is also the most difficult process. Grind the cooked cement to the most suitable intensity to form certain particles, accelerate the hydration speed and area, and meet the requirements for cement slurry condensation and hardening.

With the current means, there is no way to do it, but it depends on people. If you study slowly, there is always a chance of success. If no one innovates, there will be no developed technology in future generations.

Besides, she is a plug-in that stands on the shoulders of giants. As long as she is guided correctly, I believe that the craftsmen will get twice the result with half the effort.

These two workshops can be successfully put into research and development, thanks to Lin Yiqiu's group. Unexpectedly, each of them is hidden and has talents in all aspects, including burning bricks and making kilns, ramming earth to build walls, building houses and beams, and refining coal.

Burning charcoal, everything is perfect.

When it comes to the burning and use of coal, Hu Aye is also a good expert, so she built a third workshop for this purpose.

There is also a heating room for sprouting bean sprouts. The current soybeans and mung beans are purchased from the mall.

In this cold winter, we can supplement the body's indispensable vitamins and fiber.

There were so many strange and good things that the captains were numb and no one asked about the source. The team members who consciously kept their mouths shut also responded when someone asked, "Do you know how the cat died?"

The smart man reacted quickly and wondered why the cat was killed by curiosity.

The stupid ones will receive the second sentence, "You should clarify this question first, and then ask other questions."

So after it spread among private people, people with a bright mind would remind them: Think about whose food you are eating now, and if you don’t want to freeze to death in the ice and snow, work honestly.

There were also curious people who were unwilling to not get the answer, jumping up and down, asking everywhere, but soon, this person's food per meal was only half of the others, and anyone who made trouble would have to go hungry. After struggling like this, no one dared to talk nonsense anymore.

, of course this is something for later.

Looking back at the shocked Han Yi, he never expected that Miss Cheng had really kept her word and had already started constructing the underground project.

But the ice is three feet long, not cold in a day, and the construction of underground projects is not comparable to that of an ordinary city. He is also a person who has experienced it, and he knows how difficult it is.

Now, ordinary farm tools can do the job in the loess area, but once we reach the rock layer, these tools will be useless.

The special tools used by ordinary well diggers simply cannot complete such a large amount of work, so this is a huge project that is time-consuming, labor-intensive and extremely arduous.

But regardless of this point, throughout the construction site, a large number of laborers are working in an orderly and continuous manner, it looks like that.

After observing for a while, I also discovered many unseen utensils and transportation tools that were well coordinated, as well as a half-built kiln-making house in the distance, which showed that the other party could not be more serious.

The shock in front of him made Han Yi unable to recover for a long time. Many of the facilities and operating methods may be higher than the dungeons they built before.

Even so, he didn't agree. Knowing that his persuasion was meaningless, he had no choice but to turn his attention to me.

Although Zhou Yanlan was shocked in his thoughts, he quickly accepted the facts for a moment.

He turned to look at the person next to him, "Can I help you?"

Cheng Xiaoxiao shook his head, "No, it's fine. Don't worry about it, Mr. Banquet."

Zhou Yanlan looked at the person in front of him steadily for a while, making sure that the other person was not trying to evade, and then slowly turned his head.

"I see that you are short of manpower here, how about bringing some over?"

"No, no, no, that's too much trouble."

People who know him are from all over the world and will be here in a short time. What if there is a cold wave?

Let's forget it. She can't help a thirsty person from afar. She is afraid that someone will get lost in the middle of the road, so she is not guilty of a big sin.

"Yes, Miss Cheng, please don't refuse. We have built underground cities before, and those experienced masters are still there, and they will definitely be of great help."

Han Yi chatted happily, and his master finally became clever.

Cheng Xiaoxiao was dumbfounded. How old is an experienced master?

(End of chapter)