This burnt loess is also called soil cement.
The main raw material is loess, plus 10% to 20% of slaked lime, and less than half of semi-hydrated gypsum.
Yellow mud is easy to handle, they have it everywhere.
Hydrated lime is also slaked lime, which can be obtained by adding quicklime and water.
For every 100 kilograms of soil and cement, only ten or twenty kilograms of slaked lime are needed, and the amount is not particularly large.
As for semi-hydrated gypsum, you can also buy natural gypsum and process it.
This is simple, just control the heat a little and burn the solid gypsum into powder.
Since they started making paper here, the amount of lime used has been increasing day by day.
Recently, people have often come to their area to sell lime, with carts and loaders.
Luo Yong will also buy some if he sees something suitable.
Lime is not produced in Xipo Village, but it is not a rare thing.
If villagers in some villages can find limestone on the hills near their homes, they will pick up the stones and pile them into a pile, and burn them into powder with fire.
If you can sell it for money, a load of lime can be sold for seven or eight cents, which is considered relatively good.
Recently, more and more people are selling lime, and the price is getting lower and lower.
Earlier, he bought some to make paper.
The amount was not too large.
Luo Yong didn't think it was expensive whether a load of lime cost five or six cents or seven or eight cents.
Now that it is used to burn earth and cement, the price is no longer cheap.
In addition, plaster of this era was only sold in pharmacies, and Luo Yong was also worried that the price would be relatively high.
Before dawn that day, Luo Yong set out early with the Dinghu people who were going to the city to deliver goods.
It had rained two days ago and there were a lot of puddles on the dirt road into the city.
It was okay for Luo Yong.
After all, there was a donkey cart.
Those Dinghu people walked on two legs, and soon they were all over their feet. mud.
Luo Yong has been thinking about the feasibility of using soil cement to pave roads.
The soil cement is mainly made of yellow mud and is lower in strength than ordinary cement.
It can be used to build ditches to prevent seepage and leakage.
If it is used When roads are being built, they will be trampled by oxen and horses, fearing that they will not be able to survive.
Maybe they could pave a dirt and cement path on one side of the main road for walking and biking After the soil and cement are burned, Luo Yong will first build several fermentation tanks for the production of Eucommia gum, and then start building ditches.
The next step is probably to build roads.
Luo Yong cannot do this alone.
He has to see what other people want.
After all, lime and gypsum are things that need to be bought with money.
Luo Yong still has to do it by himself.
I owe a lot of debt and can't afford the money.
Thinking about things in his mind, the whole morning's journey didn't seem so long.
After entering the city, those Dinghu people delivering goods and selling goods, Luo Yong went directly to the drug store.
There are only two drugstores in Lishi County, one large and one small.
Entering from the main road at the city gate, there is a small drugstore in a small alley not far ahead.
That drugstore has a good reputation.
Luo Yong used to be in the county town.
While walking, he heard someone mention it, so this time he went there first.
"Why is Sanlang here today?"
The owner of this drug store is also a doctor.
He is a thin man in his early forties.
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"I'm here to buy some plaster."
Luo Yong said with a smile.
"Why are you buying plaster, but to clear the fire?"
The store owner said and went to the counter.
He took a small scale in his hand and was going to open the wooden cabinet grid that contained the plaster.
"I bought it for other purposes.
I need to buy more.
How much does this gypsum cost?"
Luo Yong asked.
"How much do you want?"
the other party turned back.
"If the price is not too expensive, I will ask for half a load first."
Luo Yong replied.
"That much" the other party was surprised.
In this era, apart from being used as medicine, gypsum has not been developed for many other uses.
The shop owner really couldn't figure out what Luo Yong would do with buying so much gypsum.
But he didn't ask any more questions, and just said: "I still have more than one dou of fine Anyi gypsum in my coffers.
However, if you are not using it for medicine, ordinary gypsum should be fine.
I also have two and a half dou of Pingyi County gypsum in my coffers."
If you want the plaster produced over there, just take it for eight cents." "" Luo Yong was surprised.
Two and a half buckets of plaster only cost eight cents.
This thing was cheaper than he thought.
"If you still want it in the future, I will help you tell the porter in Pingyi and have someone carry the plaster directly to Xipo Village.
You will be paid about twelve or thirteen cash per load," the other party said again.
"Excuse me, sir."
Luo Yong quickly thanked him.
Although he didn't understand the market, it would take two days to travel barefoot from Pingyi County to Xipo Village.
If he came from a farther place, the journey would be longer.
A load of gypsum would cost twelve or thirteen pennies, and he would be in trouble no matter what.
Not expensive.
"What's the matter?
Those plasters are inherently good, and those of poor quality are not good for medicine.
If you can use them over there, it can add a livelihood to those porters."
Being a porter certainly doesn't make money by picking plasters by yourself.
It's a lot.
Besides, if you sell it to Xipo Village, you can sell some tofu and other things on the way back, and you can also earn some money and food.
After buying the plaster, Luo Yong drove the donkey cart out of the alley.
Outside was the broadest and straightest street in Lishi County.
It was noon, and the street was quite lively with people coming and going.
On the other side, a few porters carrying burdens happened to pass by.
Luo Yong raised his eyes and saw the poles on their shoulders that were bent by the weight, the sweat on their faces and bodies, and the rough soles of their feet.
Tattered straw sandals.
Such hard work is common in times like this.
Only this time, Luo Sanlang no longer lowered his eyelids and walked past them with a somewhat complicated mood.
He just sat quietly on the donkey cart and watched these people.
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When they came closer, he smiled and said hello to them.
"What are you carrying and where are you going to carry it?"
Luo Yong asked with a smile.
"This is Chi Yan coming from Anyi, and he is going to Ma's Trading Company."
The first porter put down his burden, took off his bamboo hat and fanned himself, and asked with a smile, "I am Luo Sanlang."
"How did you know I was Luo Sanlang?"
Luo Yong had no impression of the people in front of him at all.
"It is said that Luo Sanlang is handsome and handsome, and he has a big donkey that is very impressive.
I just looked at him from a distance and I guessed you were Luo Sanlang."
This man has been tanned by the sun all year round.
When he smiles, his big white teeth It looks very white.
"I heard people say that the gypsum in Anyi is also very good."
This is what Luo Yong just heard from the medicine shop.
At this time, Anyi, which was later Yuncheng, had a Yuncheng salt pond.
"The place that produces gypsum is Pinglu, not too far from our Anyi, but they are in Shaanzhou, Duji Road, not on our Hedong Road."
The other party explained to Luo Yong.
"That's it, I was wrong."
Luo Yong silently wrote down this matter in his mind.
These days, there is no Internet like in later generations.
If you don't understand anything, you can check it online at any time, so memory and accumulation are particularly important. .
"It's such a long way, why don't you use a car to push it?"
Luo Yong asked again.
"Originally, I used a cart to push it.
It rained two days ago and the mountain roads were difficult to navigate.
The cart couldn't pass Luliang Mountain, so I had to use a pole to carry it."
The other party replied.
"It's really hard work."
Luo Yong said.
"What's the matter?
In the past, those of us who picked salt were most afraid of rainy days.
At that time, oil paper was so expensive that we didn't even know how much salt we had to carry to buy one.
If we didn't buy oil paper and it happened to rain again, what would happen?
I’ve been told to do it every day, but now it’s better, the price of oil paper has come down, and we can all afford it.
Those of us who are picky about salt, none of us don’t know about Luo Sanlang.”
Luo Sanlang was driving a donkey cart in Lishi County, greeting people from time to time, with a smile on his face.
He looked like a young boy, but in fact, there was already a weight on his shoulders.
Whether in the seventh century or the twenty-first century, Luo Yong had a very inconspicuous childhood in his life.
Such ordinaryness and inconspicuousness have always been engraved in his bones, making him believe from his bones that he was just an inconspicuous person.
The little people are powerless about many things in this world.
Therefore, when faced with other people's suffering, Luo Yong in the past would often choose to avoid it, because there was nothing he could do.
Seeing too much and thinking too much would only increase troubles.
But who in this world has that ability?
Yes, without the debris in that space and the memories of two lives, Luo Yong would be just an ordinary little person, but who is born extraordinary?
Maybe what he really lacks is not ability, but courage and courage.
It’s time to open your eyes and take a good look at the world, then roll up your sleeves and do what you can for those who are struggling.
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The author has something to say: I saw someone in the comment area asking me if I was too cautious because of the chapter about Yan Erfei, haha, I don’t know if I was too cautious.
I learned a lot in the process of writing this article.
It's true. gd1806102: