Chapter 427 (1/2)

”Alas...”

Ye Xi touched the kaolinite clay with his finger belly, and suddenly sighed deeply.

Although he is now in a great hurry to pull up ten thousand stone houses now, he still has to complete the steps to be completed. The nine story platform starts from the tired soil, and can't build a house in one step. He can't make a fat man by eating.

Ye Xi found the people and began to give orders one by one and distribute the work orderly.

”Pingyao, you let chief Shi lead the way, and immediately lead a hunting team to mine large quantities of this clay block. Let's put aside the matter of mining Qingyan first.”

”Chief nest, you lead another hunting party to the limestone.”

”Chief Gongtao, you can help select 20 excellent craftsmen and come with me later.”

Three people a Lin, in unison should say: ”yes

The two hunting teams of thousands of people soon cleaned up and set off in a mighty way.

Twenty craftsmen of the pottery industry also quickly found out. Ye Xichong nodded their heads and led them to the cave in a hurry.

***

although the materials are available, it is still not easy to make cement in this prehistoric and wild era.

The first problem is that all excavated limestone blocks and kaolinite clay blocks have to be ground into fine powder.

Ye Xi asked everyone what they would do if they were asked to grind stones into powder, and the answer was that they would smash them with big hard rocks first, and then crush them one by one.

Obviously, this method is cumbersome and time-consuming, and there will be small stones mixed together, which is not easy to pick out, and it will be very troublesome at the later stage.

So the ten stone masons led by the master craftsman made them according to the drawings.

It's much more efficient and labor-saving to grind powder with stone than to smash it with rock, that is, children with greater strength can help.

It's not enough to have stone milling powder. People are not machines, so they will inevitably leave hard pieces that have not been grinded. Therefore, ye Xi led the skillful woman to make several large sieves with thin vines soaked in oil. He told everyone to sift through the fine sieve carefully after grinding the stone powder to ensure that no small stones were mixed in it.

After the powder is milled and sieved.

Ye Xi mixed limestone powder, clay powder and iron ore powder in the proportion of eight tenths, two tenths and one percent respectively.

has to mention here that iron ore powder is the most difficult to find, but Ye Xi * s lucky. The main ingredient of the big meteorite that the tribe hides is iron, and the iron powder needed for making cement is very few.

After the three materials are mixed, the product is called cement raw material, which needs to be calcined.

To calcine, there must be a kiln. Moreover, burning cement is not firing ceramics. Ordinary kilns still don't work. So ye Xi racked his brains and the craftsmen who led the potteries spent two days churning out the original manual rotary kiln.

A few days later, when the rotary kiln was painstakingly made, and after the people calcined the raw cement, ye Xi suddenly slapped his head and said with regret that ” Oh, I forgot to look for the plaster

Cement clinker should be finely ground with gypsum and mixed in proportion to be the real cement.

Without gypsum, he didn't know what the cement looked like.

People were shocked by Ye Xi's appearance.