Cement, as explained in the encyclopedia, is a powdered hydraulic inorganic cementitious material. After adding water and stirring into a slurry, it can be hardened in air or better hardened in water, and can firmly cement sand, stone and other materials together.

Su Ziheng came from the earth in his previous life, and naturally knew the close relationship between cement and the development of cities and modern buildings in his previous life. Without cement, there would be no advanced world on Earth in the previous life.

It can be said that cement is a panacea, which has enabled the construction industry to complete an essential leap. With it, it is possible to build long-span bridges, undersea tunnels, high-rise buildings, reservoir dams and roads extending in all directions.

Su Ziheng kept flipping through the encyclopedia about the manufacturing methods of cement, and naturally he was looking at the production methods of modern cement. To put it simply, there are four words: "two grinding and one burning".

The specific process is the mining of limestone; After crushing, the limestone raw materials and a small amount of clay raw materials and correction raw materials are matched, ground and blended into raw meal with appropriate composition and uniform quality according to a certain proportion; Then the raw meal is calcined at high temperature; Finally, the clinker is ground into powdery cement with an appropriate amount of gypsum and mixed materials.

It looks simple, it's not complicated at all. But there are several problems waiting for Su Ziheng to solve, that is, where to find the limestone mine? And then what equipment is used to grind them into a fine powder? Also, how do you cook them?

As long as there is money in the limestone mine, Su Ziheng believes that the huge Liangzhou should be able to be found even in the mountains near Xining Mansion. Limestone was not very well used in this era, and it can still be found with a little time.

Then it is to build a cement kiln for the calcination of raw meal, which should not be too troublesome, as long as there are enough manpower, it is not difficult for Su Ziheng. The most troublesome thing is the grinding machine, which is an indispensable equipment for mass production, otherwise the efficiency of grinding with stone grinding alone cannot keep up with the production needs.

In the initial study of cement formulation, trial production can be done in this manual way, and machinery and equipment must be used in the later stage.

Su Ziheng put down the encyclopedia in his hand, found Pandora, and asked, "Pandora, can you make a cement grinder?" ”

At first, Pandora didn't know what a cement grinder was, but after Su Ziheng's detailed explanation, he looked at the description of cement production in the encyclopedia.

"There's nothing wrong with machine building, in my lab, there's a 3D printer, and as long as you have the materials, you can create all kinds of parts, and then you can use those parts to assemble the machine yourself. Is it just that you have the energy to drive the machine? ”

"This ......" Su Ziheng scratched his head, indeed, in this era without electricity, even if the machine is manufactured, what will be used to make it work?

So, there's a long way to go.

"Pandora, your 3D printer, can you really make any part?" In the past, Su Ziheng had only heard of such a thing as a 3D printer, but he had not really seen it.

Pandora shrugged, "As long as you have the ingredients, you can naturally print anything." ”

Seeing that Su Ziheng was in high spirits and wanted to see it, she persuaded again: "However, you have to know that all the equipment in my laboratory consumes a lot of energy to open, if it is just to satisfy your curiosity, I suggest you don't do that." Otherwise, the base will soon be forced into a dormant state due to excessive energy consumption. ”

Su Ziheng broke out in a cold sweat when he heard this, many of his things are now stored in the base space, if the base is dormant and he can't enter and exit freely, it will be too risky.

He sighed suddenly, "I probably shouldn't have detonated the energy center system so rashly in the first place, otherwise I wouldn't be in a difficult position now. ”

Pandora smiled and said, "Su Ziheng, you can't think like that." If you hadn't detonated the energy center, I wouldn't have been able to escape the mother's control, let alone lock it up. In that case, even if you get base space, you can only use it as a warehouse. You can't use most of the features in it, and you can't go through the wormhole and come into this world. ”

Su Ziheng let out a long sigh, "Alas, sometimes I am confused myself, and I don't know if it was worth it in the first place." Pandora, do you think those zerg advance teams will really come along the new interstellar coordinates? Will they go to Earth first? ”

Pandora reassured: "Don't worry, there are as many planets in the universe as there are grains of sand on the earth. If you don't tell you the exact coordinates, can you find the location of a sand in the desert? For the Zerg advance team, it is absolutely impossible to discover the location of the earth in the vast universe unless someone sends them accurate coordinates. ”

"What's more, the universe is so big, they don't dare to take risks. Otherwise, if you get lost in the starry sky, even if the Zerg live longer than other races, you will die of old age on the way. Last time, you were lucky, and it happened that the interstellar coordinates of this planet were recorded in the base, and you could jump directly through the wormhole. Otherwise, according to the normal sailing speed from the earth, it is estimated that you will never want to reach this planet in your life. ”

Su Ziheng thought about it, otherwise the earth would not have been unaware of the search for extraterrestrial life for so many years.

"Well, as for how to make cement, I'll use the soil method first. When the base's energy is almost restored, I will trouble you to help me build a few machines. Well...... When the time comes, I'll find a way to make the generator first. ”

"But generators are easy to build, but oil and coal mines are hard to find. If I can find these two things, my black technology, my industrial dream can be realized. ”

Pandora gave him a wink, "Young man, do your best." I'm optimistic about you, and you'll be able to do it! ”

……

……

In order to find a way to make cement, Su Ziheng stayed up all night and flipped through several encyclopedias, including the "Encyclopedia of China", the "Encyclopedia of Naples" and the "Washington Encyclopedia", and copied all the methods of cement manufacturing on it, and prepared to find a few craftsmen who were proficient in kilns from the family to do experiments.

After the drill every morning, after breakfast, Su Ziheng gathered the craftsmen in the family together and asked, "Have any of you ever burned the kiln?" ”

At that moment, a man named Mao Boyi raised his hand and asked, "Master, I don't know what you mean by the kiln?" The small ones used to burn bricks and pottery, but they were all very rough pottery, and they couldn't compare with the very delicate ones sold in the city. ”

Speaking of the back, he touched his head and smiled embarrassedly.

Su Ziheng was overjoyed when he heard this, and hurriedly said: "Just burn the bricks, and what I asked for is not very complicated, master." As long as you can build an earthen kiln, then you will burn quicklime. This shouldn't be a problem, right? ”

Mao Boyi immediately nodded and said with a smile: "Master, this is no problem, it is similar to burning bricks, but the specific heat still has to be explored." Although it is not troublesome to build an earthen kiln, it requires a lot of manpower, and it may be difficult to complete it by a villain alone. ”

Su Ziheng waved his hand and instructed: "If you need anything, you can mention it, whether it is someone or money, I will meet your requirements." The premise is that it must be made as soon as possible and as well as possible, and the lord is in a hurry. ”

Mao Boyi thumped his chest, "Master, as long as there are enough people and all the things are complete, you can build the earthen kiln in three days." ”