Chapter 173: Low-cost cement with wide applications
Jian Yunsang followed her gaze and saw... the concrete floor.
Sure enough, Chao Chao whispered, "The floor is different. How come this isn't tile or wood?"
I have seen cement paving all over the place, and most roads are made of cement paving.
But is it possible to do the same inside a house? Chaochao lives these days, and the indoor floors are either tiled or wooden, never made of cement.
The houses in Shangliu Village are all made of mud, and sometimes when you walk into a house, there will be a lot of dust flying.
The people of Daqi under the sky also stared with wide eyes, especially Emperor Jingxuan and others. When they saw the car driving on the road on the first day, they were very attracted by such a flat road surface.
The official road in Daqi is in good condition now, but when it rains, the road surface becomes bumpy.
Some vehicles are loaded with a lot of cargo, and the ruts left by the wheels are so deep that they are impossible to drive on.
But looking at the roads of later generations, they can be used regardless of whether it rains or is sunny. Such heavy vehicles can pass through them just fine, and they are straight and stable. It is simply the road of their dreams.
However, Tianmu never mentioned that they had thought, just like Chaochao, that such roads could only be used outdoors. But looking at the house in front of them, the ground was the same.
They looked at the skylight expectantly, and luckily they were not disappointed this time. Jian Yunsang explained, "This is a cement floor, which is relatively cheap. It is much cheaper than tiles and wood boards, but easier to clean than a mud floor. If you don't pursue beauty, freshness, and easy maintenance, this kind of floor is fine."
Chaochao was surprised. So their home, grandpa's home, hospitals, hotels and other places are made of ceramic tiles and wooden boards. Is it for the sake of beauty and easy maintenance?
"Low cost?" Chao Chao murmured, "No wonder the roads outside are all concrete. If the price of such a long and large area of ground is very high, it would be too expensive."
He Nanzhou came over and just happened to hear this. He laughed and picked Chao Chao up. "Yes, the main raw materials of cement are limestone and clay. Limestone is one of the most common rocks on the earth and is very convenient to obtain. This kind of rock can be crushed and ground into powder, and then calcined and cooled to make the material. The cost is lower than other things. But it happens to be very useful. It can be used to build bridges, roads, and houses, so it is naturally used more."
Chaochao opened her mouth. Is it so good?
Jian Yunsang also said, "We just walked over here and when we passed by the next door, they were using cement. Do you want to go and take a look?"
Chao Chao nodded repeatedly. Su Fangrong, who was carrying tea, was stunned when she heard this and said, "We want to go next door? It's a bit dusty. Is it not good?"
"It's okay, we'll stand farther away and come back after taking a look."
Su Fangrong put the cup on the table and said with a smile, "Okay, I'll take you there."
She didn't find it strange. As a city kid, she probably had never seen how cement was painted.
Su Fangrong didn't know about Chao Chao's disappearance, and Jian Yunsang wouldn't tell her about it. She didn't even know that He Nanzhou was the president of the He Group in Jiangcheng. She just knew that Jian Yunsang was a teacher, a very dedicated and responsible teacher. She respected her and naturally liked Chao Chao very much.
The little girl is curious about everything. There are many things in the countryside that may not be available in the city. Many city children instead like the flowers, plants, mountains and rivers in the village.
After saying something to grandpa and grandma, she took the three of them out of the yard.
The neighbor next door was indeed mixing cement, but since he was doing it at home, the noise was not very loud and the cement pile was only a small one.
When Jian Yunsang and others arrived, the man just turned around.
He knew Su Fangrong and immediately greeted her, "Fangrong, are you back from vacation?"
"Yes, I just came back yesterday. What is Uncle Qi doing?"
"Aren't you planning to build a pond outside? Your seventh aunt insisted on growing some ornamental hydroponic plants, like green ivy or something like that. I told her that it's not practical but she wouldn't listen. I have no choice but to build her a sink and let her do it herself. It won't be a big deal anyway."
As Uncle Qi was talking, he squatted on the ground and stirred the cement water vigorously for a few times. Then he poured a lump of water on the laid bricks and carefully scraped them smooth with a scraper.
Chao Chao opened his eyes wide and just watched.
Is this what cement looks like when it is first applied? The road surface is so hard and smooth, but before it was completed, it was as soft as mud and sand.
She asked He Nanzhou in a low voice, "Dad, after brushing this, can it still hold water?"
"Of course, cement has good sealing properties and can be used as water storage equipment. Therefore, cement is also used in many large-scale water conservancy projects."
Emperor Jingxuan under the canopy could no longer restrain himself and stood up suddenly, "Yu Kangsheng, Yu Kangsheng!"
This time Yu Kangsheng did not hide behind. He said with the same excitement and red face, "Your Majesty, I have taken note of it. I will go and experiment with it later."
The eyes of other ministers also lit up. Although He Nanzhou did not specify how to do it, the general process and raw materials had been given.
They are not fools. Having said that, after pooling their wisdom, can't they make this cement?
This cement is so useful and has low cost, so it can be promoted vigorously.
Yu Kangsheng is now a little impatient. All other things that have no clues or progress can be put aside. The cement must be made first. He believes that soon, they in Daqi will be able to use such a good thing.
Emperor Jingxuan was in a very good mood and could not help but move closer. His seventh uncle had already painted a piece very skillfully.
He nodded as he looked at it, yes, so this is how the wall is painted, and this is what the cement looks like after it is finished.
He felt that Jian Yunsang and He Nanzhou were a little bit cute today, as they actually explained such convenient cement so clearly.
Uncle Qi browsed for a while and found that Su Fangrong was still browsing with the guests. He was stunned and said, "Fangrong, what's wrong with you?"
"No, it's okay." Su Fangrong couldn't help but look at Chao Chao.
The latter hesitated for a moment, tightly grasped Jian Yunsang's hand, slowly mustered up the courage, and finally asked, "Uncle, uncle, how did this cement become hard?"
Uncle Qi was stunned for a moment, then looked at the little girl. Seeing that she shrank back in fear, he smiled and said, "This, brush it and put it here in the sun. It will become hard in a day or two."
He couldn't help but wonder in his heart, where did this little kid come from? Can he look so good even when painting cement?
Uncle Qi scratched his head, and seeing that Chao Chao was still looking, he subconsciously asked, "Do you want to try it?"
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