Returning to the Hou Mansion, he found that Shui Qingwen was not at home, Chen Xu asked, it turned out that Xing'er and Yu Ji, the two little girls, yelled that the weather was too hot, and Shui Qingrou took the two little girls out of the city to play in the water, looking at the blazing sun outside and the hoarse and noisy sound in the yard, Chen Xu decided to take advantage of this time to take a nap.

Washing his face and washing his hands, he changed into a vest and shorts and lay down on the bamboo bed, and the two little maids were shaking a fan for him to chase away mosquitoes, but as soon as he lay down and fell into a state of confusion, he heard a rush of footsteps and a call of surprise from outside.

"Hou Ye~Hou Ye~"

"Qiu Xiang, go see who it is, don't bother me if you're in a hurry!" Chen Xu muttered in a daze, and a little maid hurriedly went out with her skirt.

Outside the door, a middle-aged man, wearing a burlap coat and shorts, a pair of straw sandals under his feet, his hair was covered with dust, because it was too hot, and the rolling sweat rushed out of the furrows on his cheeks and body, but this little maid knew that it was the ironsmith of the factory outside the city who won or lost.

"Shh~, the old man is quiet, the Hou Ye is sleeping at noon!" The little maid hurriedly whispered.

"Oh, yes, yes!" Gong Yisheng nodded again and again, and then lowered his voice and said, "Can you go and tell Master Hou that the cement we developed has succeeded!" ”

"Wait a minute, old man!" The little maid bowed and then entered the house.

"Qiu Xiang, which one is it? What's up? Chen Xu never fell asleep, and asked weakly with his eyes closed.

"Master Hou, it's the old man who loses the man, he said that the water developed by the factory is ...... What mud did the water succeed ......"

"Really?" Chen Xu, who had closed his eyes, sat up at once, then jumped off the bamboo bed and jumped out of the door without wearing shoes a few steps, and sure enough, he saw a man who was sweating profusely and his clothes were sweaty.

"Did the cement really burn out?" Chen Xu asked eagerly.

"Yes yes ~ " Gong Chuan Sheng nodded again and again, and said very excitedly, "Hou Ye, yesterday out of a furnace, we poured into the wooden mold according to the proportion of sand and gravel mixed with water, two or three hours to solidify into hard stone, this morning completely became a stone, with a sledgehammer to smash open, the hardness and bluestone is no different, so we fired a furnace with the same proportion overnight, this morning out of the kiln grinding, stirred into mud again and poured into the mold, only to go to the mold and found that it solidified into a stone, the same strong and ......"

"Let's go, let's see!" Before the words were finished, Chen Xu couldn't wait to urge the public to leave quickly.

"Master Hou, you haven't brought a hat yet!"

"Master Hou, you haven't put on your shoes yet!"

"Master Hou, bring a water cup~"

Chen Xu left in a hurry, and a group of little maids suddenly panicked, some took hats, some lifted shoes, and some chased after them with water cups, shouting and screaming, and suddenly alarmed the housekeepers and guards who were resting in various houses, and they all ran out from all directions in a hurry, some were still wearing hats, some were still wearing clothes, and the entire Hou Mansion was in chaos in an instant.

"Prepare the car and go to the factory!" Chen Xu commanded loudly while putting on his shoes, and after he put on his hat and was ready, the groom also drove the carriage over, and a group of guards also cleaned up and escorted Chen Xu out together.

The weather was hot, the scorching sun was exposed, and there was a suffocating wave of air on the wet ground after the rain last night, but Chen Xu didn't feel hot at all, and sat in the carriage and kept urging to accelerate, so the four-horse-drawn luxury carriage ran wildly on the almost empty street, leaving the two-horse-drawn carriage far behind, so all the way the public and the winning were shouting behind Hou Ye to slow down.

Chen Xu does not know much about the formula and production method of cement, only knows the general composition, the ordinary cement with the number 325 commonly used in rural buildings is called Portland cement, the strength is not high, the main ingredient is calcium silicate, and the raw materials used are limestone, clay, iron ore and coal, etc., which are ground and put into a closed furnace for calcination, and then mixed with a certain proportion of gypsum and ground into powder after being melted together.

But Chen Xu didn't know the ratio of these materials, so he could only write out the raw materials, among which limestone and clay, which were the main ingredients, were naturally the most, but the proportion was what was to make successful cement was not at all, so he could only let Gong Win and some craftsmen continue to experiment.

But the role of the so-called wise man is roughly like this, just tell others that cement can be made with these materials and this method, there are many people in the factory and the academy at present, and don't want Chen Xu to spend his own money, according to different proportions to continue to experiment, there will always be a successful day.

Sure enough, it has only been more than two months since the cement project was established, and there is finally good news.

Nowadays, there are many people in the factory, although there is no grinding machine, but the public and the craftsman still have a way, with steel poured several huge iron mortars and a pair of iron mills, first the limestone is smashed into gravel, and then put into the iron mortar into fine granules, and then put into the iron mill with cattle to grind into coarse sand, this is the so-called raw meal, iron ore crushed, the remaining crushed coal is also treated in this way, and then different raw meal is mixed according to different proportions and then put into the kiln for calcination, after melting, it is cooled out of the furnace, and then ground into powder with an iron mill.

For Chen Xu's request, Gong Lose and Win and others are naturally implemented as holy decrees, what is it to grind stones, even if he is asked to grind a few people every day, he will not have any hesitation, followed Hou Ye to Xianyang, and then directly became the iron official of the Ministry of Industry, and followed Hou Ye to return to his hometown in March, naturally his identity is very different, the officials of Wancheng and the county commander of Pheasant County have to salute respectfully when they see him, this is the identity, and now he and Ma Zhu and others have bought a house in Xianyang City, This time, I brought the mother-in-law with a big belly to Xianyang, and bought a few servants and maids to take care of it, it is already a standard official house, and the entrance and exit are all carriage pick-ups, and the mother-in-law will give birth to a child in about two months, and he has gone from a slave who threw his body in the field to his current status, all of which were given to him by Chen Xu.

Therefore, Chen Xu never asked what he wanted to burn these things for, he buried himself in the factory all day and night to urge the craftsmen and craftsmen to repeatedly test, burned furnace after furnace, grinded over and over again, and the hard work paid off, he was finally about to succeed, there are several formulas of grinding ash and sand and gravel mixed with water and stirred into mud, and it has been very strong after solidification, but because of the death of Princess Qingning, Gong Chuan Sheng has not dared to bother, and still urges the craftsmen of the factory to continue to improve the cement formula.

Next to the iron-making workshop, there is now another workshop, in which a large number of slaves are busy, some use hammers to smash pieces of bluestone scraps, some pour scraps into huge iron mortars, seven or eight slaves use ropes with pulleys to pull huge iron pestles and keep licking, the scraps are transported into the iron mill, and under the impetus of several bullocks, they are ground into fine particles like sand.

As a result, when you enter the workshop, you will be greeted by slaves and craftsmen pushing wheelbarrows with buckets to transport sand, clay, soot and iron ore scraps back and forth.

The three small coal kilns, which looked like those of the porcelain workshop, were neatly arranged on the edge of the wall, and two of them were burning brightly, with black smoke billowing out, and a pungent smell of dust floating in the air, and a layer of dust fell on the slaves and craftsmen who came and went, and their hair and eyebrows were dyed gray and white.

Environmental pollution is the inevitable pain and cost of industrial development.

But in this primitive agricultural era, these smoky coal kilns except for the beautiful scenery between the mountains and clear waters, no one cares, Chen Xu doesn't care, Nima is a big earth, such a little air pollution is a fart, think the urban smog that I experienced at the beginning is called environmental pollution.

"Hou Ye, look, this is the cement fired yesterday and today!" took Chen Xu to the bottom of the shed next to the big iron mill, and Gong Yisheng pointed to the gray powder in a few rattan baskets and said.

Chen Xu squatted down and grabbed a handful and observed it carefully, feeling that it was not much different from the cement he had seen in later generations, but the particles were rougher, that is to say, the grinding was not fine enough, but Chen Xu didn't care about whether it was fine or not, what he cared about was the solidification speed and strength after it was formed into cement mortar.

Under the command of Gong Sheng, the two craftsmen of the cement workshop mixed sand, gravel and cement with water in a certain proportion, poured them into a mold made of wooden boards, and then slapped them with an iron scraper, smoothed the surface, and then retreated to the side to wash their hands.

"Where are the cement products you used to test?" Chen Xu knew that this solidification process would take at least more than an hour, and it was still in the initial solidification state, if it was to be completely solidified, it would take almost a day, and as for reaching the highest strength, ordinary cement would take half a month, so he couldn't rush it.

"There!" Gong Chuan Sheng pointed to a mess of things piled up against the fence outside the shed.

Chen Xu walked to the root of the wall with a straw hat, and the products stacked here were all mixed and solidified with sand and gravel, some of them were very loose, and they were broken with a gentle pinch of their hands, and some of them looked okay, but they had been smashed, and the strength was not high enough, but some of them looked no different from the concrete products after solidification in later generations, although they were also broken, but it was obvious that they were smashed by a heavy hammer, and two of them were intact, boxy like a cement brick, and there were traces of hammers smashed on it, There are cracks on the surface, but they are clearly not broken.

Chen Xu put one of them up and looked at it, and found that it was very heavy and strong.

"Master Hou, this piece was made yesterday, and it has been completely solidified today, and it took a sledgehammer to smash out the cracks, which is several times stronger than the previous formulas!" Gong Loser squatted next to him and explained.

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