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- The next afternoon, Liu Mingqi entered the palace with cement, river sand and other things, as well as a concrete pile.
With him was Liu Mingjing.
When he arrived at the palace, he invited Zhang Qin and Xiong Dabao who were training the Yulin Guards and Qianniu Guards in the palace.
The four people went all the way to the back of Qianqing Palace. After a while, the emperor who had passed the report came out with a group of ministers.
Emperor Jing He, who was in a good mood recently, looked at the pile of large and small things around him and asked with interest: "Ming Qi, do you have anything strange for us to see?"
Liu Mingqi smiled and said, "I am here to donate a raw material for road construction called cement."
"cement?"
The emperor looked at the pile of things at his hand, but he thought they were ordinary.
But the concrete pile is a bit eye-catching.
Seeing that the emperor was interested, Liu Mingqi asked the guard to bring a hammer and asked him to hammer the concrete pile hard.
"Bang bang bang"
The guard hammered with all his strength for more than a dozen times before hammering out a gap in the concrete pile, but it was not damaged yet.
The overall shape of the concrete piles is still there.
But the emperor and ministers saw that there were some large and small stones inside the smooth concrete piles.
People present are all smart people. Ge Songdao, who has been concentrating on road construction in the southwest for more than ten years, his eyes lit up when he saw this and said: "Your Highness, the cement you are talking aboutis this after it is formed?"
"right!"
Liu Mingqi said proudly: "After it is formed, it will be a concrete pile, and the concrete pile is so strong, even if an elephant steps on it, it will not be crushed!"
A group of officials present exclaimed.
They have never seen such a solid road surface.
Even the legendary straight road built seventy or eighty years ago may not meet this standard.
???????????? In fact, the principles of building roads are very similar, it just depends on the raw materials.
If you don¡¯t have any raw materials, you can use soil or bluestone instead.
There is a lot to pay attention to in the official road. It also uses soil, but it has strict craftsmanship standards. It also needs to add a lot of things, and constantly tamp it, tamp it, and tamp it again, and finally get such a hard ground, so that it can withstand so many dozens of Years of wind and sun, and cars and horses constantly passing by.
But generally speaking, ancient roads were basically made of dirt, and it would be so muddy when it rained that it was difficult to travel.
So you know why in ancient times, cavalry horses were so easily injured and broken, right?
As soon as the speed was fast, the horseshoe was inserted into the muddy ground, and it couldn't pull it out. The forward inertia was immediately injured.
So in the Central Plains, infantry is often used to solve problems.
Of course, cement is not a panacea.
Your labeling is not enough, your production process is not good, your ratio is not goodetc., etc., all of which can easily lead to a breakdown in quality.
The famous shoddy project refers to this situation.
The most serious thing is that in important projects, such as flood control embankments, there should be steel frames inside cement embankments, but in the end, straw poles are used instead - cowhide, right?
Liu Mingqi studied physics, and was of course very knowledgeable about the performance and pressure resistance of cement.
To put it bluntly, the better the cement, the stronger its unit pressure resistance, and the longer it will remain hard during the hardening period after mixing and paving.
There are a total of fourteen levels of cement pavement standards in our country.
?C30 is the fourth level.
The third level of C25 concrete can already cope with normal poured roads, which are the streets we usually walk on.
C30 is a normal road in the city. Such a road is not only crushed by a large number of cars every day, but also must be able to withstand the crushing of dirt trucks and slag trucks - of course, it is not the kind that can be used anytime and anywhere.
In this ancient time, of course, there were no large trucks of tens of tons passing by, so the c30 was definitely enough.
As for why the c25, which is simpler and equally usable, is not used, it is because Liu Mingqi was influenced by Qin Zhidao.
There is no reason why my ancestors could make Qin Zhidao, but I, a modern Ph.D. in physics and chemistry, would do that kind of engineering by cutting corners!
???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????¡
?????????????????sp; "It doesn't matter, it doesn't matter!" Ge Song still said, rubbing his hands, "What's a few days? If it's really that powerful, it doesn't matter if we wait for ten days!
Your Highness, do you know? If your cement project is successful, it means that we can use one hundred and eighty people to build roads in various villages and towns across the country, and even lay concrete floors all the way to Zhongjing City in Shiwei! "
Liu Mingqi hurriedly waved her hand: "Ge Xiang, you are exaggerating! Although mixing and laying don't take a lot of manpower, the previous leveling, development, arrangement, as well as logistical support along the way, etc., all require a lot of manpower!"
"No matter how much time it takes to build a straight road?" Feng Yuqiang asked: "When building the straight road, Emperor Taizu and Emperor Taizong used millions of people and spent more than ten or twenty years to finally build it nationwide. The straight road. With your paving standards and time, Your Highness, I¡¯m afraid it will take 10,000 people to complete the project in three years, right?¡±
"If we can assign it to each state capital and let them do it on their own, the time will be faster." Cao Yi made this suggestion, "It can probably be done within a year!"
"Haha, where's the money?" Nangong Ji couldn't help but remind everyone, "We don't have much money at the Ministry of Household Affairs now. How can we hire people, buy raw materials, etc. to build roads?"
¡°So we must take a long-term approach!¡±
The emperor also said the same thing after hearing this.
A penny cannot defeat a hero.
Dakang has been fighting for more than half a year, consuming the income from this year¡¯s bumper harvest and using up the last bit of foundation.
Road construction is inherently complicated, consumes manpower and material resources, and requires a huge and detailed plan, so there is no way to rush it.
But even the emperor, despite being cautious now, is quite happy.
Dakang¡¯s finances are not good this year, and it will not be able to recover next year, but it will be better in three to five years.
At that time, if concrete roads made of cement are implemented throughout the world, the entire Dakang will form a spider web of roads, which will be very convenient for the court's various activities.
As for whether they suspected that Liu Mingqi was exaggerating
To be honest, no!
How can a saint, a genius who is the best in the world, lie about such a huge matter?
I wouldn¡¯t believe it even to death!
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