"The layer-by-layer method not only ensures a stable base, but also allows us to feel the thickness of the mud wall with our hands during the process and make timely adjustments."
"And after the layers are stacked up, because they are stacked up layer by layer, there will be two layers of protection at the joints, which can also play a certain role in strengthening the shell."
As he spoke, Ren Yan had unknowingly built the outer shell of the low-temperature kiln to half a person's height.
As a test product, it is sufficient for use.
Then Ren Yan began to pick up handfuls of soil that had been soaked in water and evenly smeared it on the outer shell of the low-temperature kiln.
"This step is to reinforce the shell again and make it a whole."
Ren Yan gave another explanation at the right time.
Then he threw the soil in his hand, looked at the students of Class 9 and said, "Okay, now the low-temperature kiln is basically completed."
"Next, it's time to open the fire."
After saying that, Ren Yan began to prepare to make a fire.
As a farm experience, he brought a lighter with him this time.
The students of Class Nine were staring at the 'low temperature kiln' in front of them in a daze.
This thing is simply a large chimney, with a hollow pillar in the middle from top to bottom.
If Ren Yan hadn't made it himself and explained it, it would have been hard for them to believe that this thing could be used to make bricks.
But even so, they still had some doubts.
"This looks so crude, can it really work?!"
While wondering, Ren Yan had already lit the fire and put it into the pit below.
The raging flames penetrated directly into the low-temperature kiln through the pit below.
After several minutes of accumulation, fierce flames suddenly rushed out of the low-temperature kiln. Anyone could see the orange-brown flames at the exit of the low-temperature kiln. Even the kiln walls gradually became dry, but not a trace of flame leaked out.
Only then did Ren Yan nod with satisfaction: "When the flames burst out of the low-temperature kiln, or the kiln wall begins to dry, it means that the low-temperature kiln has been completely completed and can be used for firing."
"As for the bricks you need to make, they are actually not that difficult."
"Its main material is still clay, but in order to increase some stability, it is best to mix in some wood ash."
"This will not only make the bricks easier to burn and shape, but also make them tougher after being formed."
As Ren Yan spoke, he began to mix soil with wood ash taken out from the low-temperature kiln pit to make rectangular mud blocks one after another.
After making three lumps of clay, Ren Yan put them into a low-temperature kiln and started a fire.
As time goes by, the surrounding temperature gradually increases.
The flames coming out of the low-temperature kiln became more and more intense.
About ten minutes later, Ren Yan glanced sideways into the low-temperature kiln and then extinguished the flame.
Then he used two branches to pick out the three pieces of mud that had been put in earlier one by one.
The mud was now slightly whitish, with a slight reddish-brown color around it, but it was no longer as soft as before.
"The newly fired bricks need to cool down for a certain period of time. Once their color is fixed, they are considered finished."
Ren Yan spoke again, without paying any attention to the three baked objects.
Instead, he washed his hands with the remaining water.
After playing in the mud for a long time, a layer of mud appeared on his hands. It would be very uncomfortable if he didn't wash them.
By the time Ren Yan had washed his hands thoroughly, the three bricks had cooled down and their color had stabilized at light yellow.
After touching it lightly and feeling that the temperature was not very high, Ren Yan took it in his hand and bent it hard.
After feeling the familiar touch and toughness, Ren Yan nodded and handed the bricks to the students of Class 9: "Now, the bricks have been fired."
The students took the mud bricks with doubt. After a series of tests, they finally believed that their teacher could actually make bricks out of mud.
Besides a hint of surprise in his eyes, there was more of an eagerness to try.
I never thought that playing with mud could actually create something.
This made them particularly excited.
Ren Yan naturally saw what the students in Class 9 were thinking. He waved his hand:
"Okay, now go and make bricks. When you have enough bricks, I will teach you how to build a house!"
"Disband!"
As soon as he finished speaking, the students of Class 9 immediately scattered. The boys took out shovels from the utility room and started digging the soil around.
The girls began to prepare sufficient water and collect some scattered branches and leaves.
If you want to do your work well, you must first sharpen your tools. Now they have to prepare all the materials.
As for Ren Yan, he hadn't sat down for long.
His cell phone rang again...
Continue read on readnovelmtl.com
