Chapter 798 General, what is cement? What is asphalt?
"promise."
Nodding slightly, the three of them sat down.
Especially Fan Zeng, he naturally knows that Ying Gao himself is a master who doesn't come to the door for any reason. Since such a person is looking for him, he must have something important to do.
What's more, the companions are the general Meng Tian and the great craftsman Gongshu Qing who is in charge of Xianyang Jinan Road.
Ying Gao is not bored enough to talk to them.
As soon as the three of them sat down, a waiter brought tea and snacks. For a moment, the atmosphere in the shogunate became relaxed.
After all, Ying Gao and Meng Tian already belonged to the upper echelons of the Qin Dynasty. The two were quite familiar with each other, so naturally they were not strangers, and Gongshu Qing and Meng Tian had worked together for a long time.
Naturally, there is no oppression between each other
After taking a sip of tea, Meng Tian put down the tea cup, then raised his hand towards Ying Gaoyi and said, "I wonder why General Ying summoned us here?"
Hearing this, Ying Gao put down the tea cup, smiled at Meng Tian, and said: "I have called you all here just for one thing, and that is the construction of Chidao!"
"Can the public transportation master tell me in detail about the current construction status of Xianyang Pole South Road?"
Most of what Ying Gao knew about Xianyang Jinan Road came from the reports on bamboo slips. He did not go to the construction site to take a look in person.
Therefore, all he knows is a number.
"promise."
Nodding in agreement, Gongshu Qing raised his hand towards Ying Gaoyi and said: "For more than half a year, I have led the craftsmen and a steady stream of slaves to complete the preliminary work of Chidao in Shu County and Ba County.
.”
At this time, Gongshu Qing stood up, walked to the map, and said to Ying Gao: "Sir, starting from where we are standing, all the way to Jiangzhou, Anhan, and Langzhong, we have finished excavating the mountains. We are planning to excavate."
The section from Langzhong to Nanzheng.”
"Our plan is to start from the Nanzheng Jing Ancient Road, Chencang, all the way to Yongcheng, the ancient capital of the Qin Dynasty, and then from Yongcheng to Xianyang. This is the general plan of the Bashu Road in Xianyang!"
Ying Gao followed Gongshu Qing's explanation and glanced over the map. He roughly understood the general route map of the Bashu Road in Xianyang. He knew in his heart that this road followed the Chencang Road, the old road and the five major routes of the Qin Empire.
One of the Chi Roads, one-third of the tunnel in northwest Longxi.
Judging from the map, this design is very reasonable.
"There is no problem with the route design of this road. The current problem is filling in the gullies and building embankments in areas where flooding is likely to occur."
A look of solemnity appeared in Ying Gao's eyes, and he turned to Gongshu Qing and said: "In Xianyang, cement has been produced. We only need to wait for a major breakthrough in iron smelting technology. The problem of filling in gullies and building embankments will be easily solved."
"Guardrails can even be built along the road to maintain the integrity of the track and prevent the occasional carriage or horse from losing control."
"As for the paving of the Chi Road, I originally thought that we could abandon the original method and use asphalt and gravel paving methods. This will make repairs easier and speed up the construction of the Xianyang Bashu Road."
Only Fan Zeng knew something about cement, etc., but he still knew nothing about asphalt, while Meng Tian and Gongshu Qing knew nothing at all.
Hearing Ying Gao's words at this moment, he couldn't help but look at Ying Gao, especially Gongshu Qing's eyes that had always been dull burst out with light, staring straight at Ying Gao.
They could imagine the word gravel and iron smelting technology, but this was the first time they heard about cement and asphalt.
Seeing Gongshu Qing speak, Meng Tian also looked over quietly. Even he, the general, didn't understand this term.
"General Ying, what is cement? What is asphalt?"
Hearing this, Ying Gao smiled, and then started to educate Gongshu Qing: "Cement is a mixture of lime and volcanic ash. It is mixed with water to form a slurry. It can harden in the air or in water, and can harden sand.
Stone and other materials are firmly cemented together."
"The concrete made by cementing gravel with it not only has higher strength after hardening, but also can resist the erosion of fresh water or salt water. It can be widely used in water conservancy, construction and national defense."
"However, this needs to be used with iron to form reinforced concrete, which is considered strong and can last for more than ten years or even a hundred years."
"As for asphalt, asphalt can be mainly divided into three types: coal tar asphalt, petroleum asphalt and natural asphalt. Natural asphalt is stored underground, and some form mineral layers or accumulate on the surface of the earth's crust. Asphalt is mainly used for paving roads, etc."
"Asphalt has high viscosity and fluidity. It is a waterproof, moisture-proof and anti-corrosion building material!"
Having said this, Ying Gao took a deep look at Gongshu Qing and warned him earnestly: "Natural asphalt is stored underground, and some forms mineral deposits or accumulates on the surface of the earth's crust. Most of this asphalt has undergone natural evaporation and oxidation, and is generally no longer available.
Contains any toxins."
"However, just in case, during the use of slaves, you don't have to worry about it, but all the people of our country, Great Qin, must take precautions."
"promise."
Nodding in agreement, from what Ying Gao said, he saw a smooth road ahead in the construction industry, but he was still a little curious and confused about asphalt and cement.
But he knew that cement needed a breakthrough in iron smelting technology, and Shang Gongfang and Shaofu were working tirelessly to conquer it, and cement was also far away in Xianyang.
At this moment, the only thing he could see was asphalt.
As soon as he thought of this, Gongshu Qing raised his hand towards Ying Gaoyi and said: "I would like to ask General Ying, I wonder where the asphalt is. Can I take a look?"
Although Gongshu Qing was shocked by the prospects described by Ying Gao, he knew in his heart that hearing is false and seeing is true at any time.
Only if he sees it with his own eyes can he believe it.
Ying Gao glanced at Gongshu Qing and said: "Just north of Langzhong and above Jia Ming, the reserves here are large enough to allow the Qin Dynasty to run through the entire Central Plains."
"You tell me to go down and have the slaves prepare to collect river sand. Then when we go south from Jiaming, I will show you how to use cement to build embankments!"
"promise."
Nodding in agreement, Gongshu Qing was overjoyed. He knew in his heart that if what Ying Gao said was true, it would be a great change for Da Qin and the construction industry in the Central Plains.
And this revolution was initiated by him personally, which made Gongshu Qing so excited that he couldn't control himself.
Watching Gongshu Qing leave, Meng Tian glanced at Ying Gao, his eyes still full of surprise: "Does Ying take this seriously?"
"Of course it's true!"
Ying Gao took a sip of tea, put the tea cup down gently, and calmly turned to Meng Tian and said, "What good will it do to me to deceive Gongshu Qing?"