Reborn as the Lord of Another World

Chapter 12

Roland stood in the backyard of the firing room waiting for the first batch of cement to come out of the oven.This brick house was specially designed by him for cement production. It is about fifteen meters long and four meters wide. There is a door at the front and back, but the difference is that the front door is as

wide as possible for people to carry materials. The back door is only one person wide, allowing Anna to sneak into the firing room.To this end, he also built a wall halfway around the house to surround the back half of the firing room, and arranged for horsemen to guard the entrance and exit.

They are all Carter's subordinates, and their loyalty is unquestionable.The production process of cement is very simple. Crush the limestone into powder and mix it with clay and iron powder. The clinker is calcined using the dry or wet method, and then ground together with the

cement paste before use. . The raw materials are very common, and iron powder is difficult to produce in large quantities. The key lies in the calcination temperature of the clinker.Roland did not remember the specific temperature required for firing cement. Even if he remembered, he would not be able to measure and control the temperature - neither with an infrared thermometer.

Even the thermocouple temperature measuring gun is countless times more complicated than cement. He only knew that this temperature was almost close to the melting point of iron, and that the calcinationprocess was also a difficulty in producing cement.

In an era when smelting technology was underdeveloped, maintaining high furnace temperatures has always been a problem that troubled everyone. The heat loss of ordinary open-mouth furnaces isextremely large, and it is difficult to maintain the furnace temperature above 1200 degrees. The reverberatory furnace needs a high-temperature resistant liner, and he couldn't figure out how to make fire-

resistant bricks for a while. The traditional high furnace for iron-making is even less powerful. The temperature may be up to standard, but if you rely solely on the narrow furnace cavity to calcine cement, you maynot be able to burn enough by the time the Demonic Month is over.

Therefore, the firing room designed by Roland did not have any heating measures at all. He relied on Anna.Small particles of ash crushed manually are mixed with clay and then mixed with water to form a slurry, which is evenly spread in the firing room. Then the rider locks the big

Door, cleaning chores. Anna entered through the back door and let the flames bake the slurry on the floor until the iron rods that had been brought into the room melted.Roland was a little restless. This was his first step in stationing in Border Town. If cement cannot be made, the plan to build a city wall in three months will be empty talk. Without a city wall to stop us, I'm

afraid no one would want to stick to this place. Whether it is real history or fictional literature, if you want to farm well, a stable base is essential.

Your Highness, can this thing you mentioned really stick the boulders together?" Carter Lannis, who was guarding the fourth prince, asked. Although the prince told him that this was the

latest research result of Graycastle's gold refinery, he was still hesitant to believe it. After all, those kids have never made any truly reliable gold refining products."Who knows? That's what they said anyway," Roland said, spreading his hands.

In this world, alchemy and astrology are collectively known as the art of the sage, and they are very popular in mainland countries. The royal family usually trains its own alchemists andastrologers for refining secret medicine and predicting destiny. For ordinary people, these studies are too high-level and lead to blind faith. Considering this, Roland naturally pointed the question

of the source of the cement mixture to the gold refinery. It doesn't matter whether the first rider believes it or not.The flames coming out of the window gradually extinguished, and it seemed that the firing was complete.

Roland shouted and stood up, drove Carter out of the yard, and waited alone in front of the back door of the brick house.The iron door was pushed open with a creak, and Anna came out with her arms and legs. Roland immediately put his robe on her body and brought her a cup.

Water, "How is it?"The shaman girl’s face was dusty. Although the wet cement production process was low in dust, the hot air would still bring up the dust during the calcination. For those who cannot wear it

For her who wears a mask, it is obviously not very comfortable to stay in it for dozens of minutes. She coughed twice and nodded, "The mud has turned into dust."Roland couldn't wait for the temperature in the firing room to drop low enough. He wrapped the wet grass around his head, grabbed a shovel and got into the back door.

The hot air surrounded him instantly. He felt difficulty breathing for a while, and the skin on his hands was burned and hurt. Fortunately, I shoveled a handful of ashesNot too much time, otherwise staying in this environment for a few minutes may cause hyperthermic shock.

"Is this what you want?" Anna stretched out her head and asked after putting on the witch suit."It looks very similar," Roland flattened the powder and felt its remaining warmth with his fingers. "You have to try it to know whether it works or not."

"What's it for?"

There are so many places where it can be used to build houses, bridges, and roads. If it succeeds, people’s homes in the future will not be afraid of cold weather or violent storms.

Even heavy snow cannot be destroyed. He patted the little girl's head with his other hand and said, "You made it possible." "Anna lowered her head. He didn't know if it was an illusion, but he felt that the girl's breathing had become a beat faster.

Theoretically, the fired clinker should be ground with the paste to adjust its hardening time. But there was no need to think so much at this time. Roland took a short break and shoveled outtwo handfuls, then called Carter who was standing outside the courtyard and asked him to prepare cement mortar according to the ratio of three parts ash powder to one part river sand.

The chief knight also doesn't mind doing some menial work at all. For him, doing this kind of thing is better than fighting for His Highness in Graycastle or hooking up for an outing.The noble lady is much better.

Since iron powder is not added to the raw materials, the water mud produced is lighter in color and appears gray and white. Roland poured them onto one brick and then put another one ontop. The cement solidification time is about four hours. Considering the instability of the trial product, he planned to simply wait until tomorrow to see the results.

Early the next morning, Roland hurriedly took Carter and Anna to the backyard of the firing room. Pushing open the door, he noticed that the surface of the cement was already solidified.In a solid state, it is tightly joined with two stone bricks. The consolidated surface looks uneven, with white frost appearing in some places.

Roland squatted down, scraped off the white frost produced by the alkalization reaction, and pressed the hardened cement with his fingers. The touch made him happy - the surface of the cementThe surface is firm and tactile, completely different from the tactile feel of tamped clay. Even if you use fingernails to press hard, you can't leave a trace on it.

After Carter got the instructions from the Four Princes, he first tried to lift the bricks, but failed. He kicked hard from the side several times until the joint between the mud and the ground wasbroken, and the two stone bricks were still firmly bonded together. Finally, he swung the hilt of his sword and struck them hard, but he could only knock off a small piece of the edge.

"Is this the effect of 'water'?" Carter immediately realized its effect, "It's incredible. Yesterday it was still like meltingIt flows like a candle, but after just one night it becomes as solid as rock. With this kind of thing, the city wall can be built as fast as you want. As long as there are enough stones, we can even

build a city wall around the national border within five years! ""What's the use of that?" Roland said disapprovingly, "No matter how tall the wall is, it can't stop the enemies from within. I would rather keep the border town

The dilapidated wooden houses have been transformed into sturdy mud houses, so that my people no longer have to worry about being homeless after a natural disaster. ""..." The chief knight was stunned. He really didn't expect that the fourth prince, who had all kinds of aristocratic bad habits, would say such a thing.

You will see it in the future," Roland reaffirmed the path he wanted to take - for many travelers, technology is the primary productive force. And

Here, witches are the first productive force.