New carriages and horse lanterns began to appear in markets around the world, and these two goods became Liu Yan's new source of wealth.
Liu Yan then ordered a new workshop to be built in Aoshan Acropolis, and handed a personally drawn floor plan and some relevant instructions to Aoshan Guards Officer Shen Tuo, and ordered Shen Tuo to mobilize civilians and craftsmen to build it as soon as possible.
Since Liu Yan had just started a large-scale construction project in Lingshan Acropolis, the surrounding craftsmen knew that Liu Yan was generous and would never default on wages. At this time, when the craftsmen near Aoshan Guard and Lingshan Guard heard that the guerrilla general Liu Yan was going to build a new workshop The news came flooding in like a gentleman crossing the river. Aoshan Guard Officer Shen Tuo quickly recruited enough manpower and began to break ground on the north side of Aoshan Acropolis.
With the support of sufficient manpower and a large amount of money and food, it took only more than half a month for the new workshop to take shape and have a roughly complete appearance. However, there are still many details that need to be sorted out, but it does not affect normal production.
Although the new workshop has not yet been completed, Liu Yan can't wait, because according to Liu Yan's understanding of history, the imperial court will soon allocate training salaries to local areas, and in a few months, a war will break out across Shandong. Due to the unprecedented drought and locust plague, Liu Yan had to act faster to accumulate enough money and food reserves before this disaster struck, so as to prevent the good situation of Lingshan Guard and Aoshan Guard from going to waste.
So Liu Yan took Song Gongming to the new workshop, which was intensifying the final construction. Under the escort of dozens of personal guards, the two came outside the workshop. Liu Yan pointed to the new workshop, which occupies a large area, and said Song Gongming said: "After this new workshop is fully completed, it will produce something called cement. As long as the cement is sold, you can make a lot of money! And the cement industry will be quite large in the future. It can accommodate a lot of people and make the military households of Aoshanwei and Lingshanwei rich."
"cement?"
Song Gongming was stunned when he heard this. Mud is mud and water is water. What is this cement? Moreover, even if cement can really sell well, how many people can be accommodated just to produce this thing?
Looking at Song Gongming's expression, Liu Yan couldn't help but smile.
In the words of later generations, the cement industry is considered a labor-intensive industry and can accommodate a large number of manpower. Moreover, the profits from the sale of cement are quite considerable, not to mention its uses. It can be said that wherever it is related to construction, cement will be used, so the prospects of this industry are also very promising.
In fact, the production method of indigenous cement is not difficult, but at the current level of technology, indigenous cement still cannot be truly "reinforced and iron-framed" like later generations of industrial cement. However, this kind of home-made cement is sufficient for paving roads and building houses.
The main raw materials of home-made cement are mainly limestone, clay and iron powder, which are mixed in a certain proportion and then finely ground into powdered raw meal, which is then continuously heated in the furnace and finally turned into a ready-to-use cooked meal. material.
Although this process sounds very simple, the minimum temperature required for this production method is about 1,300 degrees, so the furnace for making cement must be built like a steel-making furnace and made of refractory bricks.
Although Liu Yan is not a professional in making cement, he was well-informed in his previous life. Coupled with the development of network information in his previous life, he is also very clear about the indigenous cement production methods in rural areas in later generations.
The raw materials of native cement are very simple, including clay bricks, various pottery fragments, various ceramic dishes fragments, and various refractory materials, such as fragments of jars, basins, etc., water-quenched slag, and furnace slag ash. Add quicklime, grind it all into fine powder and mix it together to make cement.
If you want better results, you can also add plaster of paris. The method of making plaster of paris is also very simple. It is to grind a small amount of gypsum ore into fine pieces, heat it in an iron pot, and it only needs to be a hundred or tens of degrees. Fry the gypsum ore powder until it is yellow-gray, and add it to the cement powder. It is used to adjust the solidification degree of cement. If this kind of local cement is not added, it will solidify faster.
As for these auxiliary materials, you can first crush them with a hammer, and then grind them finely with a stone mill. It is better if you have a water-powered mill.
Then the above ground materials are mixed together in proportion to form cement, also called mixed cement, or native cement.
This kind of cement has good acid and alkali corrosion resistance and low early strength. However, if it is heated with high temperature or steam, the strength will increase quickly. It also has strong water absorption and low heat release when used. If used normally, it will take nearly two months. Only in this way can we achieve the strength of later generations of industrial cement. Moreover, the frost resistance of native cement is not as good as that of ordinary cement in later generations. If it is used in winter, it will still need a period of curing. It is just the ordinary curing of covering it with plastic sheet in later generations. Do not make the temperature too low.
However, at this time, this kind of indigenous cement can fully meet the current needs. Furthermore, in the future, cement workshops will continue to carry out research and development and creation based on the actual conditions of use. Liu Yan has great faith in the ability of the craftsmen at this time.
Liu Yan is very confident and certain about the scientific and technological power of the Chinese people. If it were not for the interference of the two barbaric and backward Tartars in history, the Mongolian Yuan and the Manchu Qing Dynasty, China's local science and technology could develop on its own and become a kind of technology that can be harmonized and harmonious. Western science and technology are competing against each other, even crushing them!
Now that Liu Yan has come to this era, he must do his best to change the direction of history, so that the Jiashen national crisis that should have occurred in history can be completely eliminated, and China can once again return to its glory!
The indigenous cement manufacturing method that Liu Yan now knows can use waste bricks, waste pottery, waste porcelain, waste slag, and scrap iron powder that were previously discarded. The cost is very low, and the raw materials are very abundant. It is completely This kind of home-made cement can be produced in large quantities!
At this time, Liu Yan and Song Gongming entered the cement workshop and met a person. This person's name was Han Feng. Liu Yan transferred him from the salt drying field. He was originally a subordinate of Chu Yunfei, the director of the salt drying field. He was very talented. He was transferred by Liu Yan to take charge of the affairs of the cement workshop.
"This subordinate pays homage to your lord and has met Song Qianhu."
Song Gongming smiled and returned the greeting. Liu Yan exchanged a few words with him and then asked Han Feng to lead the way. The three of them arrived at the workshop where Han Feng worked.
Liu Yan then wrote down the method of making home-made cement and handed it to Han Feng, telling him: "This formula must be kept closely and must not be known to a third person! The cement workshop must produce according to this formula as soon as possible. All cement produced must be registered and stored in the warehouse. It cannot be sold at will or taken out of the workshop. Do you understand?"
"I understand, sir. Please rest assured."
However, Song Gongming, who was listening next to him, was slightly startled and had a premonition in his heart: "My lord must be planning something again. I'm afraid those merchants are going to bleed again!"
Liu Yan also gave some details: "If the number of broken bricks and broken porcelain pieces is not enough, build a few more brick kilns specifically for burning bricks!"
"The craftsmen in the cement workshop must be closely monitored in the future just like the glaze workshop and the wine shop!"
Han Feng listened very carefully and wrote down Liu Yan's instructions one by one, for fear of missing something.
"Also, the treatment of the craftsmen in this cement workshop is the same as that of the glaze workshop and the winery. Incentive measures must be adopted to ensure output while focusing on quality!"
Liu Yan said to Han Feng in a deep voice: "Those who make false claims, those who leak information, those who are passive and sabotage, you and your people will investigate clearly, and we will never tolerate them!"
Han Feng said yes again and again, and Song Gongming was also cheered up when he heard this. Liu Yan talked harmoniously and laughed with everyone on weekdays, but once he got down to business, he seemed like a different person and became murderous. Be decisive!
At this time, Liu Yan had a solemn look on his face, and coupled with the words he just said, Song Gongming felt chilled in his heart, and said to himself: "Sir, you really have the heart of a Bodhisattva and the methods of a diamond!"
"Don't worry, sir. I will strictly manage my subordinates and will never allow people to cheat, leak information, or be passive in their work. Once I find that someone is impatient, I will immediately notify the person in charge without any delay." Yes!"
"Um!"
Liu Yan nodded with satisfaction and said, "This is the best!"
At this time, Han Feng read the formula and had a question. He looked at Song Gongming who was present and wondered whether he should ask.
Liu Yan smiled slightly when he saw this and said, "Song Qianhu is your boss. If you have any questions, it's okay to ask."
Han Feng clasped his fists and said: "Sir, among the ingredients in the formula, I can say that the rest are pretty good. It's just that this lime is a rare thing. Even if you buy it from the market, it will cost a lot of money. If It's a long way to transport it from Tiechu Mountain, and the cost cannot be reduced, so what should we do?"
Liu Yan was slightly stunned when he heard this, then he remembered something and said with a smile: "What's so difficult about this?"
"Sir, is there anything you can do?"
Liu Yan said with a smile: "Aoshan Acropolis is right on the seaside. The workshop can buy shells, oysters and other items from the coast. These items are waste that fishermen don't want. They are usually given to others for free and no one will ask for them. Even if they are purchased in large quantities, The price won’t be that high.”
Han Feng asked strangely: "Sir, what is the use of buying these things?"
"Don't underestimate these shells and oysters. Lime can be produced by burning these shells, but the output is not very large. The workshop can directly build a special lime kiln to burn shells and oyster shells. Even if the output It’s small, but it can’t hold the large number of shells. At the same time, it can also solve part of the food and add some meatiness to the craftsmen.”
After Han Feng and Song Gongming listened, they once again sighed at Liu Yan's profound knowledge, strong memory, and wide knowledge, and they admired him very much.
Han Feng even said directly: "Sir, I will arrange for people to purchase shells and oysters soon!"
After Liu Yan handed over the method of making local cement to Han Feng, Han Feng took the craftsmen of the new cement workshop and plunged in. They stayed in the cement workshop under construction for more than ten days. Liu Yan was very satisfied and thought this was a serious and responsible work attitude.
During this period, Han Feng led everyone to conduct trial production using only one furnace cellar, and also built a special blast furnace for firing bricks. He also purchased a large number of shells from Dengzhou on a temporary basis. Finally, after dozens of failures, a sample of home-made cement was finally tested.
Han Feng looked at the pile of gray powder in front of him with a disgraceful look, and suddenly laughed, like a child who saw his favorite toy, laughing very happily.
"Send someone to Aoshan Acropolis quickly and ask the adults to come and watch!"
Some people died, but not completely...
