The sack was untied, and what was poured out was fine gray soil.

The man who asked Xu poured the soil on the ground and took water and stirred it into mud.

This is something new that he has never seen before, Mingshan stepped forward to look at it curiously.

He originally thought it was Sanhetu, but now it doesn't look like it.

As the name suggests, Sanhe soil is the result of a mixture of three different materials.

Of these three materials, lime is necessary for fixation, and the other two are constantly changing.

But at the end of the day, it's all three materials, with different colors and textures. Therefore, the triad soil is generally a mixture of different colors.

But what was in the sack in front of me and being stirred by the water was a very uniform gray fine soil, which seemed to be a thing, not a stirring thing.

Mingshan didn't speak immediately, but quietly watched from the side, silently observing.

The fine ash is mixed with water to form a gray mud, which is then divided into wooden barrels.

The craftsman lifts the barrel, walks over to the stacked stones, plasters the edges of the stones, and builds them up piece by piece.

This usage...... It's still Sanhetu!

But can Sanhe soil be used with water in this way?

Mingshan's eyes widened and he saw another group of people open another barrel-shaped mechanism and pour the plaster, along with some stones and sand. Then keep pressing the pedals underneath, and the barrel spins.

Is this stirring?

Mingshan almost quickly thought of the situation inside the barrel, and sure enough, it didn't take long for the mixture to be poured out, piled up, and built into some roads or high platforms.

The more Ming Shan looked at it, the more surprised he became, and finally couldn't help but walk up to Xu Wen and asked, "What is this?"

"It's called cement. Xu Wen has always known everything, and he replied while he was busy.

"Haven't you heard of it before?" asked Mingshan.

"It is a variant of triple soil, which is fired by mixing lime, clay and gypsum. ”

"Burned? You mean, it's not just mixed up, and you have to go through another process?"

"Yes. ”

"Isn't that more troublesome?"

"No, we have improved the lime and cement kilns to make the firing time faster. Second, the burned cement can be stored for a long time in the form of water barrier. And as soon as it comes into contact with water, it immediately clumps, making it very convenient to store and use. ”

"Fast, how fast can it be?"

Mingshan's question was a little vague, but Xu asked both questions.

"The lime firing time is three hours, and the cement firing time is similar. The cement setting time can be controlled, usually between three quarters of an hour and three hours. ”

Mingshan's eyes widened instantly, and he didn't know what he should be surprised about.

After a while, he still asked the point that surprised him the most-

"Can this cement be mixed with water like this?"

"Yes, that's one of its big strengths. By adjusting the firing method, the setting time can be controlled. Not less than three quarters of an hour, not more than three hours, that's the standard. ”

There is a whole set of methods for measuring the setting time of cement, and Xu Wen directly moved the national standards of another world here.

Ni Tianyang didn't understand the reason at first, but soon realized it.

If the condensation time is too long or too short, it will have a huge impact on the actual use, and Xu Wen is obviously the most reasonable standard for this requirement to be well thought out.

At this time, this also surprised Mingshan.

Sanhe soil has always been a major problem whether it is stored or used. If this cement can really be as convenient as Xu Wen said, it is simply a revolutionary improvement!

At the same time, he was also very concerned about the other time that Xu Wen had just mentioned.

"You just said that the lime was fired for three hours, right, not three days?"

"It's three hours. Xu Wen knew what he was surprised about, and nodded very affirmatively and said, "We have made great improvements to the kiln and made a rotary kiln, which has greatly improved the production efficiency." ”

Mingshan gasped, and said after a while: "But three hours, this is too short!"

He looked at the barrel, and another question in his mind was answered.

Sanhe soil is not rare, but it is very restrictive to use, and one of the important reasons is that the lime is fired for too long, which affects its yield.

Now this new kiln built by Xu Wen has shortened the time to three hours, which is more than ten times!

If what he says is true, lime and this cement can be supplied in large quantities, and it is possible to mix sand and stones like this and use them directly.

"The recipe of this cement, as well as the new lime kiln, can you let me record it and put it in the classics of the Wandering Garden?" Mingshan pondered for a long time and suddenly asked.

Of course, the weight of Liuyu Garden is needless to say, but many people are actually reluctant to do this, and Mingshan has suffered a lot of rejection.

After all, the mainstream idea in this world is that skills and formulas are personal property, and taking away people's formulas is almost like killing people for money.

"Okay. As a result, Xu Wen didn't want to think about it, so he answered immediately, but he paused for a moment and changed his words, "There is no problem on my side, but the rotary kiln was completed by me putting forward the idea and another friend taking over the improvement practice." As for the equality of property rights, I will have to go back and ask for his opinion. ”

"It should be, it should be. Mingshan replied repeatedly.

He thought about it, took out another piece of letterhead, solemnly presented it to Xu Wen with both hands, and said: "On the fifteenth day of the first lunar month, the Tianshan Liuyu Meeting, if Xu Xian's nephew has free time, please take the time to participate." ”

In just one day, he even sent out two invitations to the Liuyu Club one after another.

Whether it was last time or this time, he had a feeling of "must happen".

At this moment, Mingshan deeply felt that he came out too late, and the world was about to change, or it had already begun to change.

Xu Wen was stunned for a moment, and a smile suddenly appeared on the corner of his lips.

He had heard of it not long ago, and he knew very well how high its status was, and how much the craftsmen of the entire Great Zhou Dynasty flocked to it.

Now, such a heavyweight invitation was casually handed to him, recognizing his qualifications, but he was not proud, let alone felt that it was worthless.

He looked at Mingshan, as if he had seen the Wenchuan Society and Luo Yifan in another world.

A thousand years ago, a thousand years later, in a completely different world, there are always people doing the same thing.

It's really interesting.

He wiped his hands, took the invitation with the same solemnity, and said, "It's an honor." I'm still in service, so I can't guarantee it, but if I have the opportunity, I won't miss it. ”

Mingshan smiled, stretched out his hand and said, "Don't bother Xu Xian's nephew, I'm looking forward to what wonderful performances you have in the future." ”

When the two were communicating in the front, Lin Xie had been standing next to him and didn't interject at all.

When Mingshan gave Xu Wen the invitation letter to the Liuyu Society, he raised his eyebrows slightly, and a person came next to him and whispered a few words.

At the same time, Xu Wen also received news that a batch of new Sanhe soil had been delivered to the camp tent and could be used at any time.

He had long known that the Inner Pavilion was in urgent need of a good recipe for Sanhe soil, and this was an important reason why they were working overtime to make cement.

It is normal for people to make new things, and Portland cement itself is a basic attribute, on which a large number of changes can be made to adapt to various environments.

What does this new batch of Sanhe soil look like? It will be sent in large quantities temporarily, and it will definitely have its advantages, and if it can be combined with cement, it may have a new effect.

"I'll take a look. Xu Wen got up and said.