Lu Yuan asked Lu Liang, who was building a hydraulic stone grinding machine, to try it, and Lu Liang simply picked up the pickaxe used to dig the soil next to him and smashed it down.

Bang!

The hard concrete splattered only a little stone chips.

"Childe, it's really hard!"

Lu Liang looked up at Lu Yuan and said.

Lu Yuan asked a mason to fetch a few bricks and try to build a wall with this kind of concrete.

After the knee-high section of the low wall to be built was dried by fire, Lu Yuan personally inserted a knife into the adhesive room, but did not insert it.

The mason was also shocked when he saw this: "What kind of soil is this use, it looks more powerful than Sanhe soil with brown sugar?!" ”

Then, Lu Yuan kicked it himself, and the wall still didn't fall.

In this way, Lu Yuan is completely convinced that his cement concrete has been successfully manufactured.

"Very good, the prospective technicians involved in the manufacture of cement this time have all been promoted to technicians, and the monthly silver will be increased by five yuan, and fifty taels of silver will be directly rewarded, and Master Lu will also be rewarded with fifty taels."

When Lu Yuan said this, Wei Ashsmith and the others were all happy.

"This is all the credit of you, sir, we just did what you said, and now we should not get these rewards for nothing."

These craftsmen were a little embarrassed at first.

Lu Yuan said with a smile: "This official is just making suggestions, you naturally have merit, there is no need to refuse, there will be places for you to serve in the future, since this cement has been successfully built, you have to find a way to increase production." ”

As soon as Lu Yuan said this, everyone didn't say anything, and hurriedly thanked him.

Next, Lu Liang began to develop a hydraulic mixer according to Lu Yuan's instructions.

After all, Chunfeng Iron & Steel is now able to supply corrosion-resistant, hard, high-carbon steel, making mixer paddles that mix crushed stone and clay is no problem.

The cement plant's technicians began to build additional kilns and hydraulic stone mills in order to increase cement production.

"Lu Lang, can this concrete really be used to build roads?"

Lu Yuanxin established a construction company, named Chunfeng Construction First Engineering Bureau, referred to as Chunfeng Construction First Bureau.

Now, the Spring Construction Bureau is temporarily responsible for the construction of the project around Qingquan Square, so as to really start its own infrastructure project in Qingquan Village.

At this time.

The Spring Construction Bureau is reinforcing the concrete of Qingquan Square.

A group of masons and small workers hired by the Spring Construction Bureau are constantly pouring concrete and paving it on Qingping Square, and in order to prevent slipping, they also draw horizontal lines on it.

On this day, Tang Ying, who was also on the side, saw that the craftsmen of the Spring Construction Bureau were in full swing, and couldn't help frowning and questioning the solidity of the concrete.

"Young grandma, Lord Lu really didn't lie to you, this concrete is more suitable for road surface than bluestone slabs, and bluestone slabs have to rely on stonemasons to groove on it to be non-slip, and this concrete is not used, it can also be condensed into a whole piece, more importantly, he doesn't have to ram the earth, the workmanship time is short, it won't take long after pouring to dry and solidify, and release water, if it is a dirt road, even if it is rammed, if it rains for a few days, it will be soaked bad, and the small one will give you a test test."

Since Director Guo of the Spring Construction First Bureau knew that Tang Ying was directly responsible for allocating the project money, he intended to sell it in front of Tang Ying, so he immediately took the water gun used to extinguish the fire and rushed it with water on a section of the concrete road in front of him that had been dried.

Director Guo washed half a stick of incense, and the entire concrete floor still did not splash any mud chips.

"Lu, Lu Lang, this, this concrete is so powerful?"

Tang Ying pulled Lu Yuan's arm, and his eyes were stunned.

"You step on it and try it to see if you get softened by this blister."

Lu Yuan said.

Tang Ying really wanted to give it a try, and while holding Lu Yuan's hand tightly, he stepped on the embroidered shoes, afraid of getting dirty with his embroidered shoes.

"Huh!"

Tang Ying smiled, jumped directly, jumped on the concrete ground with both feet, and stepped on it vigorously: "Lu Lang, you are really hard!" ”

Lu Lang walked over as if he was angry, and said in a low voice: "To be clear, it's hard concrete, not me." ”

Tang Ying didn't understand what Lu Yuan meant, and at this time, she was full of surprise at this concrete.

And because of this, Tang Ying completely believes that it is better to build roads with concrete.

Tang Ying took the initiative to set up the Second Bureau of Spring Construction, which was responsible for renovating the old mud road of Qingquan Village with concrete.

this day.

The Yu family sent the iron ore on a monthly basis, and the housekeeper of the Yu Mansion, who was responsible for transporting the iron ore, saw Lu Yuan and Tang Ying: "Master Lu, Miss Tang Family, unfortunately it rained for a day yesterday, and it is estimated that the road is very muddy. ”

"Steward Yu, it doesn't matter if it rains, how can you let you stay in the wilderness, you can let your carriage pull the iron ore directly into it."

Lu Yuan said.

Tang Ying also nodded: "Yes, Steward Yu, our road to Qingquan Village is not afraid of rainy days." ”

"Really?"

Steward Yu was suspicious and asked people to pull a cart of iron ore over in a horse-drawn cart.

As soon as Steward Yu came to the intersection of Qingquanzhai Road, he saw that the road on the slope was different from the road surface in other places, and the road surface arranged in horizontal lines was very smooth and seemed to be very hard.

Steward Yu stepped on it boldly, and immediately became surprised: "This thing is solid, Master Lu, Miss Tang, how did you build this road, it is better than the official road, what kind of soil is this, it is as hard as a stone!" ”

"This is the concrete we make, which can be used not only to build roads, but also to build houses and walls."

As soon as Lu Yuan said this, Steward Yu instantly became interested: "Is it more expensive than making bricks?" ”

Lu Yuan knew what the butler meant by the bricks, and now the strongest way to build the city wall in the Ming Dynasty is to use Sanhe soil to tamp the wall inside, and then wrap the bricks outside.

But in addition to the wealthy families and the imperial court to repair the city wall, ordinary people simply can't afford such a cost, after all, the green bricks are not easy to fire, and it is not a simple project to use Sanhe soil to build a wall.

"Naturally cheap, and you don't need bricks, if you want to be particularly strong, you can use a few steel rods to make bones, and you can pour the concrete and dry it for a few days."

As soon as Lu Yuan said this, Steward Yu suddenly became interested: "It's not a secret, our Yu family's ancestral home is Henan, but now there are thieves in Henan from time to time, and the squires are all in the village to protect themselves, and the Yu family naturally plans to do the same, but it is too expensive to use bricks, if Lu Gongzi can, I don't know if he can sell some of this kind of coagulation to our Yu family?" ”

Lu Yuan didn't expect that this Steward Yu actually wanted to buy his own concrete, and said busily: "Butler Yu, Miss Guifu is the sister-in-law of his wife, and I won't hide it from you, the main component of this concrete is cement, which is the unique secret technique of our Lu family to make this concrete, that is, because you asked, I am willing to tell you, if you are really willing to buy it, I can buy cement directly for you, and let me send someone to you to guide you how to use it, how?" ”

The Yu family is not short of money, and the Yu housekeeper has always been able to decide the business for his master alone, so he nodded and agreed: "Lu Gongzi is willing to talk about the secret technique, how can the small one not be allowed to give a gift, I don't know how to sell this cement?" ”

"Ten pounds and five coins of silver!"

Lu Yuan calculated the cost and proposed his ideal price.

Steward Yu was a little embarrassed: "Lu Gongzi can't be cheaper?" Isn't it much cheaper than buying green bricks and sanhe soil? ”

"But the housekeeper, if you don't use my cement, you have to buy both green bricks and sanhe soil to build a beautiful and strong wall, but if you buy my cement, you only need to use the same, and it also saves a lot of manpower, and you actually save more than half of the cost."

Lu Yuan said.

Butler Yu heard Lu Yuan say this, and nodded: "Okay, I'll buy five hundred catties of cement first when I come this time." ”

Lu Yuan nodded, he was still very happy in his heart, his cement factory produced about sixty catties per day, and there were more than 1,800 catties of cement output a month, and selling 500 catties to the housekeeper would not affect his infrastructure projects, and he could directly get twenty-five taels of silver, which was enough to offset the production cost and labor cost of the cement plant this month.

In other words, the cement plant built by Lu Yuan this month did not cost much, and it was all due to his family.