Chen Fang, do you have any recipe for water control? ”

  There, Wu Meiniang suddenly looked at Chen Fang and asked.

  "Neither does this minister!"

  Chen Fang had no choice but to return, but Chen Fang really couldn't control the water, maybe he still had a way to control the small ditch and small river, but now it was raining and the river was soaring, what could he do.

  "Now the heavy rain does not stop, many roads have become muddy and difficult to walk, and many sections of the road have been washed out, and it is already difficult to control the water, and it is even more difficult at this time!"

  Wu Meiniang sighed and looked at the twists and turns, these twists and turns were like snowflakes, each piece was heavy, like a thousand layers of snow, and people couldn't breathe.

  "Everywhere called for help, but even if the warehouse was opened, most of the roads were no longer passable."

  At this time, Datang, the road is mostly rammed earth road, but where the dirt road, the most afraid of rain, as long as the water is piled up, the car is a deep road, more than a few times, the rammed earth road has also become a "cement road". The roads are muddy and difficult to navigate, and it is raining heavily, so even if you want to help the disaster, you can't do anything about it.

  Disaster relief, at this time the road has become a big problem. If this is modern, cement road and asphalt road, there will be no problem of blisters, but where is there at this time.

  Seeing that the second saint was worried, Chen Fang said a few words and went back to the Tang workshop, but he couldn't help him here.

  The natural disasters are terrible, and Chen Fang can't do anything about it, after all, he doesn't have the ability to travel clouds and rain. is not a dragon king, nor a god, some things are destined to be powerless.

  It's hard to walk, it's not like there's no way to solve this problem, isn't it time for my cement to appear?

  A few days ago, I thought that the workshop road was not good, and I wanted to get some cement to repair the road, but at this time it can be of great use.

  Back at the residence, Chen Fang took a pen and paper, and listed the key points of cement production at this time, which is the most ordinary cement, as for those complicated, to be honest, Chen Fang will not, even if he will, Datang's industrial and agricultural foundation will definitely not be able to support it.

  At this time, no matter what Chen Fang does, in fact, the first consideration is the industrial and agricultural foundation of Datang, which is the foundation of everything, and if it can't be reached, it can't be reached, and there is no way.

  For example, if you want to make a computer at this time, unless you have a system, unless you can shop online in the Tang Dynasty or walk through the door at will, there is really no way, even if you can make every part and memorize every parameter, but at this time, no matter the raw materials and processing technology can not be reached. How can you?

  Cement is made of limestone and clay as the main raw materials, which are crushed, batched and ground to make raw meal, and then fed into the cement kiln to calcine the mature material, and then the clinker is finely ground with an appropriate amount of gypsum.

  There are also two ways to obtain cement-like materials, one is volcanic ash and the other is calcined mortar.

  However, these two methods are difficult to achieve in Guanzhong, after all, there is no volcano here, where does volcanic ash come from, and the same is true for stuccorock.

  I heard that there is volcanic ash as the main material of natural cement in Western Qin, and the Western Qin Emperor used it in large quantities, but this really depends on the geographical environment.

  Not everywhere there is a Soviet volcano, not everywhere volcanic ash can bury Pompeii.

  The cement that Chen Fang wants to make is closer to modern cement, and the raw materials are not a problem in this era, whether it is limestone, clay or gypsum.

  The problem is manpower, limestone needs to be excavated, which requires a lot of manpower, and crushing also requires a lot of manpower. Cement kiln calcination is also a work that requires a lot of manpower, and finally mixed with gypsum and grinding, which requires a lot of manpower.

  Productivity is low, you can only rely on more people, this is no way to do things, as for improving productivity, such as getting a steam engine out, Chen Fang can only dream, at this time it is definitely not possible

  。

  Taken together, cement can be made, but the manpower demand is a bit unbearable at this time. You must know that this is the agricultural era, and the vast majority of people are bound to the land, and labor can be said to be in short supply.

  Combined, large-scale manufacturing is almost impossible, only small-scale manufacturing.

  "Let's figure it out first, and then consider the manpower issue later."

  "It just so happens that there is a kiln in the workshop, and you can try to make it!"

  At this time, Chen Fang said that he would do it, and directly called a team of Fengwei, and went to the workshop, because it was only a trial production, so there was not much stone clay needed, and the workshop could be found here.

  It took a lot of time to crush and grind, but the tools were limited.

  Because the furnace in the workshop was originally intended to make iron and steel, but it needed to be renovated, when the construction started, the carbon fire in the furnace was blazing.

  Suddenly, someone outside shouted excitedly, Chen Fang listened to it a few times, and ran out of the workshop house, only to see the clouds opening and dawning outside.

  The weather, which has been gloomy these days, has turned around at this time. Although the sun has not yet shown its face, it is already a fact that the dark clouds are gradually dissipating.

  The fire inside is booming, and they have waited for time to open the furnace.

  On this day, Chen Fang did not leave the workshop for a single minute, and when it was twilight, about 500 catties of fired cement clinker was taken out of the furnace, and gypsum was added to grind it finely.

  At this time, it was already late, Chen Fang let everyone disperse, and the next day was busy.

  The next day was a rare sunny day, the sun shone on the earth, and the haze was gone.

  Seeing pedestrians in the workshop, they all stretched their brows a lot, brought Feng Wei, and the workshop was busy again, and finally at noon, the first batch of cement experimental materials in the Tang Workshop was made.

  Chen Fang asked Taohong to go to the Taiji Palace to find the second saint to come to the workshop, and he had already begun to check how the fired cement was.

  Generally, cement is not used alone, and it needs to be equipped with sand and gravel grout to make concrete, or steel bars are added to seal the roof. The latter Chen Fang definitely does not consider that steel bars cannot be supplied on a large scale at this time, and iron ore can be smelted and smelted in this era, but the output ...

  At this time, the sand and gravel were naturally prepared, and the two holy cars entered the Tang Gong

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【Xingeer】