The next day, the morning glow was pleasant and the birds were playing.
After a busy night, everyone did not feel tired. They looked at the wall taking shape. Not only did it not collapse, but it was very strong. They all felt amazing. Thinking of what the young master said last night, everyone can live in this kind of house in the future, one by one.
Be energetic and work harder.
Qin Huaidao looked at the wall that was almost two meters high, and his sense of accomplishment doubled. A good news came that the clay cylinder was successfully fired. Qin Huaidao picked up one and looked at it. It was very hard and strong, although it was a little rough and some were deformed.
, but there is absolutely no problem in using it.
If you can fire a clay cylinder, you can make tiles. The production of tiles is also simple. A clay cylinder is cut in half from the middle to form two tiles. The main material is yellow clay. Adding some fine sand can increase the hardness. Adding lime can increase the viscosity and
Toughness, avoid water seepage, make the clay body and dry it, then it can be installed in the kiln and fired.
Before the lime was burned, Qin Huaidao did not dare to do anything. But now it is different. After explaining the precautions and essentials to Mr. Huang, he mobilized hundreds of people to start large-scale production, and then allocated a few carpenters to make long wooden boards to build the roof of the warehouse in the future.
For placing tiles.
After everything was arranged, Qin Huaidao calmed down and tried cement firing.
Two major questions lie before us: What is the proportion of ingredients? How to grind it finely?
Limestone, clay, iron ore and coal are the main raw materials. Qin Huaidao doesn't know the proportions of each. He estimates that limestone should account for the majority, and the clay should not be too small. The iron ore is crushed into iron powder slag, which plays a strong role.
The effect cannot be too little, and coal is readily available.
When the red-hot iron is smashed down, there will be a layer of black stuff on the surface. After cooling, it will be iron powder. You can buy it from an iron shop, but there probably won't be too many in Chang'an City. It can be used for testing, but it will be needed for large-scale firing.
Purchase iron ore.
Qin Huaidao couldn't help but think of Changsun Wuji. The Changsun family controlled several iron mines and specialized in making weapons for the imperial court. There should be a lot of iron powder and iron slag. When Luo Zhang returned from escorting the coal transport convoy, he would give Luo Zhang a few words and let him go.
Looking for Changsun Chong, don't you want to have a relationship between the two families? Then test the other party's sincerity.
Early the next morning, Changsun Chong arranged for people to deliver iron powder slag, which amounted to more than a dozen cars, and said that there would be a lot more to follow. For Changsun Chong, these things were just garbage and there was no place to pile them up. He wished that someone would take them.
Come on, the iron powder slag is mixed with some gravel, grass and trees, and is a bit dirty. It can be used after sifting it, which saves Qin Huaidao a lot of trouble.
I don't know the specific ratio, so I can only try more. After careful consideration, Qin Huaidao decided that limestone should account for about 70%. After all, it is a big head, and 10% clay should be about the same. It doesn't feel good if it is too much.
Don't use too much iron powder. If it's too much, it won't be cement. It'll become iron. Try 1% first. It doesn't matter if it's not enough. Add more next time. At least the burned thing can be used for other purposes. If it's too much, it will be useless.
, As for the coal, I don’t know how much it will be used to assist combustion. Too much won’t work, so I’ll try 10% first.
Once the ratio is established, all that remains is the process of grinding.
There is no stone grinding machine, and the waterwheel has not been made. It all depends on manual grinding. Fortunately, people have used hands and feet. They have smashed a lot these days, but they are not small enough, so they can only try to burn them first. It would be good if they can burn out semi-finished products.
At least it can be used to build a dam. Once the waterwheel is built, things will be much easier later on.
Burning cement is also a technical job, and Qin Huaidao has no idea. After installing the kiln, he will learn from the method of burning lime and directly bake it, and will recruit a few guards to follow him. In the future, he will not be able to do it himself, and he must cultivate talents.
Calculating the time, there was only one day left before the ten-day deadline agreed with Fang Xuanling. Qin Huaidao handed over the fire to everyone, and after careful instructions, he returned to the ancestral hall and found two fired clay cylinders, one large and one small.
The bottom of the mud tube is different from the small one. It is solid and looks like a container.
A small hole is opened on one side of the bottom to facilitate air entry, which is helpful for combustion. There is a circle of small steps above the opening to place iron bars, which are elevated to facilitate air entry. Small mud tubes are placed on top of the iron bars, and there is space between the large and small mud tubes.
Stir and fill with lime, yellow clay and sand, which can insulate and stabilize the small mud tube.
After it was done, Qin Huaidao took three briquettes, first lit a fire in the stove, and then put in the briquettes. Watching the briquettes burn slowly, Qin Huaidao breathed a sigh of relief. It was ugly, but it was strong and usable.
What the common people want is something durable and cheap, just right!
Many people were watching, watching the briquettes burning. Their eyes were bright and excited. Mr. Huang couldn't help but praise: "Young Master, a miracle, this is a miracle. The smoke poison of the coal is very slight.
If ventilation is maintained, there is no need to worry about death, and it can be used in closed homes."
"Just open the window a little for ventilation." Qin Huaidao said with a smile.
Someone asked curiously: "Young Master, do you no longer need to make a fire for cooking in the future, but just use it?"
"That's right, have you seen the hole below?" Qin Huaidao pointed to the ventilation hole below and explained: "If you want the fire to be big, open it. If you want the fire to be small, just use something to plug it up. It will burn slowly and save money."
The briquettes are completely blocked at night when not in use, leaving only the small hole on the side so that the fire will not go out."
Everyone made the things, so naturally they knew that there was a small hole next to it, which was slightly smaller than chopsticks. Everyone wondered what the small hole was for. It could actually prevent the fire from going out. Wouldn't it mean that you no longer have to worry about starting a fire when you get up in the future?
Everyone looked at the small hole curiously and marveled.
Qin Huaidao continued: "When the top briquettes are almost burned, you can take out the bottom ones and keep the other two and put another one on top. By rotating in this way, you can save a lot."
"It can still be used like this, so how do you take out the bottom one?" someone exclaimed.
"Yeah, how do you get this thing if it's burning?" Jia Youcai also asked curiously.
Qin Huaidao did not explain, some things just need to be done once, so he went to the iron shop, lit a fire, and made a simple tongs. When he returned to the ancestral hall, the briquettes were almost burned. Under everyone's curious gaze, Qin Huaidao easily
When the briquettes were taken out, everyone was stunned. Is it so simple?
"Amazing!"
"This thing can cook, heat, and boil hot water for later use when not in use."
"Yes, it can be eaten warm and used at any time. There is no need to cook it over a fire. It's so convenient."
“The key is not having to be watched, so you can free up time to do other things.”
“It’s so convenient.”
Everyone praised it one after another.
Seeing that everyone saw the benefits of using it, Qin Huaidao was too lazy to say more and shouted: "Uncles, the clay tubes, iron bars, and briquettes are all ready-made and made by everyone. They are all familiar with them. The next step is to assemble them."
It's even simpler. As you all saw just now, Mr. Huang, please arrange manpower and try to have one for each household tomorrow."
"Thank you, Master!" everyone said excitedly.
The sun shines into the ancestral hall, reflecting on everyone's vicissitudes of life, making them more shiny, warm and peaceful.