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Chapter 174 Brick Burning Completed! 【Subscribe】

"The deadline will last until you graduate~"

Hearing Ren Yan's answer, he looked at Shi Lei's nodding.

The students in Class Nine suddenly felt a little messy.

Why did you agree so easily?

What a chance to play tricks on Teacher Ren~
Why did Shi Lei postpone it so easily?

Adhering to the mentality of trying again, the students in class nine continued to persuade.

The reason is nothing more than that.

After this village, there will be no such shop~
You should accept it as soon as you see it, and what you get is yours.

All in all, it is for Shi Lei to have fun in time, not to waste this rare opportunity.

But in the end Shi Lei shook his head and rejected all the students' proposals.

It's not that he's not tempted, but he always feels that such a good opportunity, it's a waste to do some of these things.

If his classmates could offer any constructive suggestions, he might listen to them.

But now, Shi Lei still wants to save this opportunity and use it when needed in the future.

"Okay, okay, stop encouraging Shi Lei. With this effort, it's better to increase your knowledge and hold the right to make demands in your own hands next time. Don't you want to do what you want?"

Ren Yan at the side spoke calmly.

Hearing this, the students in Class Nine were all taken aback, and immediately regained their spirits: "Teacher Ren, is there another time for this kind of prize quiz?!"

"Hmph, who knows~" Ren Yan shrugged, but instead of answering directly, she changed the topic: "But for now, let's continue to solve the problem of the low-temperature kiln."

"Otherwise, I'm afraid we won't be able to live in brick houses when school starts."

With that said, Ren Yan squatted next to the mud cake again, and began to pile up dirt along the edge of the mud cake.

"Now, we have the most basic means to increase firepower, so the next step is to make a basic building shell."

"There are various styles of low-temperature kilns, as long as they can accommodate the things you are calcining, in theory, you can make whatever you want."

"However, there is also a basic requirement during this period, which is to allow the low-temperature kiln to perfectly eat the firepower below, so the initial base must be stacked along the mud cake we made before. It is best to be able to Make it a tight fit.”

"In this way, the firepower will not be leaked, and the efficiency will be improved a lot."

"Of course, if you want to fire more bricks at one time in the future, you can make the clay cake bigger. Here I will simply tell you the principle, and it will not take much effort to make it so big."

While speaking, Ren Yan began to build up the soil layer by layer on the fixed base.

On the other hand, the students in Class Nine were slightly puzzled: "Mr. Ren, since it is necessary to light the fire, does this mud cake really not need to be dried before use?"

"If it's wet, will it affect the spread of firepower?"

Hearing this, Ren Yan looked back at the students with a little appreciation in his eyes: "That's a good question."

"Actually, under normal circumstances, the fire hole is mostly made of some iron products, and there will be no such problem as you mentioned."

"But now, after all, the environment is poor, so we can only use soil."

"Theoretically speaking, drying in the sun does improve some effects, and it is definitely better than wet."

"However, it is not impossible to use the wet one, but we need to light a fire first to dry it up. By the way, check the entire shell of the low-temperature kiln to see if there is any place exposed to fire."

"It can be regarded as killing two birds with one stone, and it can save a lot of time."

"So I didn't go to dry it."

While speaking, Ren Yan asked again:

"But remember, after any fired building is completed, it needs to be fired once to check the completion of the building."

"This step cannot be saved anyway."

"Not only to improve the yield of products and save materials later."

"It's more for your own safety."

"Anything that comes into contact with fire, even if it looks harmless, you should always be vigilant."

"Do you understand?"

After all, Ren Yan stared at the students in Class Nine with a slightly serious expression.

When they were about to play with fire at a high level, Ren Yan felt that it was necessary for them to be more vigilant.

After all, things like fire have been synonymous with explosion since ancient times, and they have never joked with anyone.

Otherwise, there would be no such profession as a firefighter.

Throughout the ages, an unknown number of people were buried in the sea of ​​flames. He didn't want anything to go wrong with these youngsters.

Seeing Ren Yan's slightly serious expression, the students also put away their giggling smiles, nodded and answered:
"Understood, Teacher Ren, we must strictly implement every step."

"Strictly monitor product quality control issues!"

This answer made Ren Yan roll his eyes.

Then the students asked again: "But Teacher Ren, why do you have to pile up the soil layer by layer?"

"Can't it just be in place at once?"

"No." Ren Yan shook his head: "Let's not talk about whether it can be done once it is in place without collapsing. Just making the surrounding mud walls the same thickness is a very difficult thing to accomplish."

"When making a building, remember not to be impatient. It's best to proceed steadily and step by step, so that the things produced in this way can be more durable."

"Using the method of layer barriers can not only make the base stable, but also can feel the thickness of the mud wall with hands during the barrier system, and adjust it in time."

"And after the layers of barriers, because the layers are superimposed, there will be two layers of protection at their joints, which can also play a certain role in strengthening the shell."

While speaking, Ren Yan unknowingly built the shell of the low-temperature kiln to the height of half a person.

As a test case, it is enough to use.

Immediately, Ren Yan began to pick up a large amount of soil soaked in water, and spread it evenly on the shell of the low-temperature kiln.

"This step is to strengthen the shell again and make the shell a whole."

Ren Yan explained again in a timely manner.

Then he threw the soil in his hand, looked at the students in class nine and said, "Okay, now the low temperature kiln is basically completed."

"The next step is to turn on the fire."

After all, Ren Yan began to prepare to light the fire.

As a farm experience, this time he honestly brought a lighter.

The students in class nine stared at the "low temperature kiln" in front of them in a daze.

This thing is simply a large chimney, from top to bottom is a hollow pillar in the middle.

If Ren Yan hadn't made it with commentary by himself, it would be hard for them to believe that this kind of thing could be fired into bricks.

But even so, they were still slightly skeptical.

'This seemingly crude thing can really work? ! '

In doubt, Ren Yan had lit the fire and put it into the pit below.

The raging flames drilled directly into the low-temperature kiln through the pit below.

After a few minutes of gaining momentum, the fierce flame rushed out of the low-temperature kiln in an instant, and anyone could see the orange-brown flame at the exit of the low-temperature kiln. Even the kiln wall gradually became dry, but there was no trace of flame Leaked.

Only then did Ren Yan nodded in satisfaction: "When the flame bursts out of the low-temperature kiln, or the walls of the kiln start to dry out, it means that the low-temperature kiln has been completely completed and can be used for firing."

"As for the bricks you need to fire, it's actually not very difficult."

"Its main material is still clay, but in order to increase some stability, it is best to mix some plant ash here."

"This will not only make the bricks easier to fire and form, but also have higher toughness after forming."

While talking, Ren Yan began to mix the ash taken out of the low-temperature kiln with soil, and made one rectangular block after another.

After getting out three clods of mud, Ren Yan put them into the low-temperature kiln, and then started to light the fire.

As time goes by, the surrounding temperature gradually increases.

The flames drilled out of the low-temperature kiln became more and more intense.

About 10 minutes later, Ren Yan glanced sideways into the low-temperature kiln, and then extinguished the flame.

Then use two branches to pinch out the three mud blocks that were put in before.

At this time, the mud was slightly whitish, with a slight reddish brown around it, but it was no longer as soft as before.

"The bricks that have just been fired need to be cooled for a certain period of time. After their color is fixed, they are considered complete."

Ren Yan spoke again, and didn't deliberately pay attention to the three fired things.

Instead, I washed my hands with the remaining water.

After playing with mud for a long time, a layer of mud-like cytoplasm almost appeared on his hands, and it was really uncomfortable not to wash it.

After Ren Yan cleaned his hands thoroughly, the temperature of the three bricks had also finished cooling down, and the color stabilized at light yellow.

After touching it slightly, she felt that the temperature was not very high, so Ren Yan held it in her hand and shook it vigorously.

After feeling the familiar touch and toughness, Ren Yan nodded and handed the bricks to the students in Class Nine: "Now, the bricks have been fired."

The students accepted the mud bricks suspiciously. After a series of tests, they really believed that their teacher actually made bricks out of clay.

In addition to a trace of surprise in the eyes, there is more eagerness to try.

Unexpectedly, playing with mud can actually produce a kind of creation.

This made them very excited.

Ren Yan naturally also saw the thoughts of the students in Class Nine, he waved his hand:
"Okay, now you go to burn bricks first, and when there are enough bricks, the teacher will teach you how to build a house!"

"Disband!"

As soon as the words were finished, the students in Class [-] immediately dispersed, and the boy took out the shovel from the utility room and began to dig the soil around.

The girls began to prepare sufficient water sources and collect some scattered branches and leaves.

If workers want to be good at their work, they must first sharpen their tools. Now they have to prepare all the materials first.

On Ren Yan's side, she hasn't sat down for long.

His cell phone rang again.
(End of this chapter)