The Little Lucky Girl.

Post-disaster reconstruction work is underway. As the saying goes: If you want to get rich, build roads first! Well-built roads can drive economic development in every village! Only then can the people have enough food to eat!

Su Qing has recently been researching cement production methods: The main raw materials for cement include limestone, clay, iron ore, and coal. Limestone is one of cement's main components, rich in calcium and the foundation of the silicate series of cements. Clay, rich in aluminum and silicon, acts as a gelling agent. Iron ore is used to adjust the color and properties of cement. Coal serves as an energy source, heating the kiln.

Crushing and Grinding: Raw materials are fed into a crusher for comminution and then into a grinding mill for powdering. Most raw materials, such as limestone, clay, and iron ore, require crushing to form a powder.

Preheating and decomposition: The ground powder is preheated in a preheater to decompose the carbonate into calcium oxide and carbon dioxide. The calcium oxide reacts with the silicate in the clay to form calcium silicate, preparing for the firing process.

Firing: The preheated powder enters a rotary kiln for calcination. At high temperatures, the calcium oxide in the raw materials reacts with silicates to form calcium silicate, which forms cement clinker. The calcination temperature and duration affect the clinker's mineral composition and structure, and thus the cement's properties.

Grinding: After burning, the clinker needs to be ground again to ensure that its particle size meets production standards. This process is usually done in a ball mill, which contains metal balls that grind the clinker and gypsum into a fine powder.

Mixing: The ground cement clinker is mixed with an appropriate amount of gypsum to adjust the setting time and hardening speed of the cement. The gypsum can be anhydrite or hemihydrate.

Su Qing prepared all the materials and equipment for making cement, and tested the cement in the empty house next to the workshop. After repeated tests, the cement was not hard enough at the beginning. After several rounds of tests, he finally developed the cement!

Then Su Qing found the village chief and said, "Grandpa Village Chief, I want to repair the village road and pave it with the cement I developed! In the future, we won't have to walk on wet mud on rainy and snowy days! I will pay for the cement and hire strong laborers in the village to pave the cement road. Each person will be paid 30 coins per day, and meals are not provided. You will be responsible for supervising the work and keeping track of the work. I will give you one or two taels of silver per month!"

"Great! Building the road is good! This is a good thing that benefits the people! It's my duty as the village chief, no need to pay me!"

"No, otherwise I won't ask you to supervise me!"

"Okay, okay, then Grandpa will listen to you!

"Then Grandpa Village Chief, go and notify them. It will start tomorrow!"

"Okay, I'll ring the gong and drum to let you know in a moment!"

Su Qing drove his carriage to the county government office again, found Murong Ye, and presented the cement recipe to the court! "Brother Ye, this is the cement recipe I just developed for paving roads! This will make the roads in our Dafeng Dynasty easier to travel! There's a saying: If you want to get rich, build roads first!"

"Really, Qingbao!"

"Sujia Village will start road construction tomorrow. It's paved with cement. You can go and see how easy it is to walk on and how solid it is!"

"Okay, I'll go there tomorrow!"

"You can live directly at my house then!"

"Okay, then I'll have to trouble Qingbao!"

"hey-hey!"

"Uncle, I want to pave all the roads in Yun'an County with cement! I'll pay for the money and the cement! You hire the workers! Thirty cents a day, food and lodging not included!"

"Okay, I'll arrange it! Now, except for those who are building houses, most of the able-bodied villagers have nothing to do, so this is a good opportunity to earn some money!"

"Uncle, you need to find someone you trust to supervise the work. Don't do this with shoddy work! The road collapsed after just a few days!"

"okay, I get it!"

Su Qing took out a fifty thousand tael silver note and gave it to County Magistrate Shen. "Uncle, here are fifty thousand taels. If it's not enough, come back to me! Go to my cement workshop to ship the cement! We can start soon!"

"Okay, okay, thank you Qingbao! You always help me earn political achievements!"

"Hey, isn't Yun'an County also my fiefdom? I want the people in my fiefdom to be prosperous, to have enough rice and flour to eat, to be well fed and clothed, and to have surplus food in every household...!"

“Okay, I hope we can achieve it soon!”

"great, good luck!"

After Su Qing finished explaining, he returned to Sujia Village. Murong Ye couldn't calm down for a long time. He was very glad that Qingbao was born in the Dafeng Dynasty! Otherwise, it would have been cheaply acquired by other countries! Then Murong Ye wrote a letter to the emperor, telling him about Su Qing's discovery of the snowstorm, the whole process of disaster relief, the donation of food and cotton clothes, the development of a typhoid fever prescription, and the prevention of the spread of the epidemic! He also developed a cement recipe for paving roads! He also donated silver to build roads in Yun'an County! And so on! He added: If you want to be rich, build roads first! ………

County Magistrate Shen was even more excited, his heart brimming with joy! Yun'an County, under his jurisdiction, had first produced high-yield grains, and now a cement recipe for road paving! This disaster relief effort had been another achievement! He knew he'd be promoted soon! County Magistrate Shen also wrote a letter to Grand Tutor Shen in the capital, recounting everything that had happened during the recent snowstorm, including Su Qing's wisdom and courage during the disaster relief effort! And so on!

Su Qing returned to Sujia Village and joined the villagers in paving the road, acting as a quality inspector! Everyone's faces were filled with joy! They were thankful to have survived the disaster! The village was now building a new road! Everyone was filled with hope for the future!

After more than ten days of hard work, the village's cement road was finally paved! After the cement road is paved, it needs to be watered and maintained. In hot weather, the watering and maintenance time should be no less than 14 days, and in cold weather, the watering and maintenance time should be no less than 21 days! The first 7 days are very important!

After the maintenance period, the cement road is finally usable! Su Qing specially set off a string of firecrackers to celebrate! Murong Ye was also in Sujia Village and witnessed how the cement road was paved. Su Qing also explained the maintenance precautions one by one!

Su Qing paid off all the villagers who had participated in paving the road! That day, Su Qing took Murong Ye and walked on the village cement road. "Brother Ye, you can use a hammer to test whether the cement floor is strong enough!" Su Qing took out a big hammer from the space and handed it to Murong Ye. "Brother Ye, hammer it hard and see how it goes!"

Murong Ye took the sledgehammer and hammered it several times, but the cement road was still very solid, without a single crack!

"This cement road is really very solid!"

"Of course! This cement can also be used to build houses and city walls! It will be very strong!"

"Qingbao, thank you for your great contribution to Dafeng!"

"Haha, it's okay! It's what a Dafeng citizen should do!"

Emperor Fengyuan of the imperial palace in the capital was very happy to receive Murong Ye's letter! When he heard that Su Qing had developed cement again, he was even more excited and walked around the imperial study! "Fu'an, take a look, how do you say you will reward Qing girl this time! Dafeng has a girl like Su Qing, it's really God's blessing for Dafeng!"