"We built a few brick kilns and tried them. The burning was much faster than using carbon before. Moreover, coal is everywhere. We just need to dig it up. It is much cheaper than carbon. And I also discovered

, the fired bricks are harder than before. I don’t quite understand the reason for this, but I think it has something to do with the heat.”

After Kurut finished speaking, he looked at Liu Feng. He came up with this idea, and he must know the reason for it.

In fact, the reason is very simple. The burning temperature of coal can reach about 1,800 degrees, while the temperature of charcoal can reach 1,000 degrees which is good. Whether it is steel making or brick burning, the high temperature will naturally burn quickly, and

The hardness of the fired bricks will be higher.

But how to explain these? Liu Feng was in trouble, but looking at the expectant eyes of everyone, Liu Feng briefly said, "This coal can burn clay and other objects thoroughly, and the flames will be stronger, so it will burn

It’s better to use bricks to make steel.”

"Let me just say, it has something to do with the heat. We had to use good wind power when making steel, which is probably the same truth." Kurut nodded, indicating that he understood. This fat guy can also draw parallels.

"I see. It seems that coal is really a good thing." Donnie nodded and understood.

Isn't it, black gold, just kidding, Liu Feng thought. But now, coal is not widely used, and the coal reserves here are really ridiculously high. It can be said to be inexhaustible, so there is nothing to worry about.

"Madman, if this is the case, as long as we build more brick factories, not everyone can live in brick houses?" Sulla asked.

"That's natural! This brick factory is very simple to build, and baking bricks is easier than before. The house built with bricks and wood is very stable. Kurut is just setting an example, and the people themselves will do the same in the future.

You can build a brick factory. Bricks are cheap, and people will naturally make their choice." Liu Feng said.

"Then when building a city, just use bricks to build it. It will be much stronger than before." Doni said.

"Yes, before, there were very few bricks, and most of them were made of soil. Naturally, they are no longer the same." Zhao Yun nodded in praise. He had never seen so many bricks.

"General Dhoni, there is something even more magical. Do you want to see it?" Kurut continued to introduce it carelessly.

"What else is magical?" He had been with Liu Feng for some time, and there were so many magical people and things that he was a little overwhelmed.

"Come and take a look." Kurut said, taking everyone to another venue. There was a large smooth slate-like thing on the ground. Liu Feng recognized it at a glance. It was cement.

In my previous life, there were cement forests everywhere, so I was used to seeing this stuff. I didn’t expect that Kurut was such a talent, and he successfully made it like this.

"Fat man, what is this? It's like a stone, and it's quite smooth!" Asila pulled Kuranyi and Thalia, stepped on it, and walked around.

"Hey, this is called cement! It's very smooth and hard, really comparable to stone." Kurut said.

"Really? Do you want me to give it a try?" Donnie didn't believe it. This thing doesn't look very thick. Can it be compared with a stone?

"Just try!" Kurt waved his hand, not caring.

Everyone wanted to see the quality of the cement and encouraged Donnie to give it a try. This was easy to try. Donnie picked up a big stone next to him. He hesitated a little, worried that he would break such a flat cement, and looked towards

Kurut said, "Fat man, I'm really going to break it. If it's broken, why don't you ask me to pay for it?"

"You can smash it, even if it breaks, I'll compensate you." Kurut said, patting his belly.

There was a loud "Bang!", and Donnie was really rude and hit the cement block with all his strength.

The big stone and the cement block collided, and each of them was fine. There was only a white spot left on the cement block. I ran it with my foot and found no damage.

"Awesome!" Ma Jun became interested, "Kurut, what are you made of? How did you make it? How can it be so hard?"

"Hahaha, this is not the hardest one. Look at that one again." Kurut said, pointing to a smaller cement block not far away. "That one is much harder than a stone. I guess

Yeah, your ordinary explosion box can't do anything to it?"

"Fat man, are you exaggerating?" Zhao Yun said, "We have all seen the power of this explosion box. It can blow up huge rocks to pieces, but it can't smash a cement block like you?"

"General, Kurut doesn't dare to lie. I have never tried it, but this piece of cement is really very hard. If Mr. Deheng wants to try it, he can do it at any time." Kurut said and looked at Liu Feng

.

To be honest, Kurut was not sure. He had only heard Liu Feng talk about it. As long as it was made thick enough and steel bars were added inside, it would be harder than stone. He didn't believe it at first, but he really waited until it was made.

, he also gained some confidence after being hit with a big stone.

"In that case, would you like to open your eyes?" Liu Feng, who had not spoken for a long time, spoke up. He also wanted to know what effect this cement refined by ancient methods and the steel bars made by Kurut can achieve. Earthen

Explosion box, against earthen concrete, see which spear is sharper or shield is harder.

Hula, the workers who were busy before also gathered around. They had heard of the magic of the explosion box. They had never seen cement before. After seeing it a few days ago, they secretly said that they were surprised. Now the contradictions are colliding.

They also wanted to watch the fun.

"Okay, let's try it. We happen to have two ready-made explosion boxes for testing. However, everyone should stay away to avoid hurting anyone." Ma Jun said and ordered the students to start the experiment.

.

Kurut sent people to carry the cement blocks to an open place. Ma Jun's students began to arrange the explosion box, placing the explosion box under the cement blocks, and then pulled out the leads.

People watched from a distance, full of expectations for this contest.

"I heard that this explosion box is very powerful. It blew up the huge rocks not far away before. Can our cement blocks withstand it?" The workers in the brick factory, although they were facing the cement blocks, still felt unsure.

"It's hard to say. We made this cement block and added a lot of steel bars in the middle. Logically speaking, it is hard enough. But this explosion box is also very powerful. No matter who wins, it is an amazing initiative."

But I think clearly, no matter who wins.

"Crazy brother, which one do you like?" Aisila asked Liu Feng with excitement.

"Yeah, it's hard for us to judge. Who do you think will win?" Kuranyi was also nervous.

"Haha", Liu Feng smiled calmly, "Let's wait and see, if you ask me, cement block will win."
Chapter completed!