Otaku Engineer in Great Tang Dynasty

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Empress Changsun finally left, but with a faint smile. She left gently, but left Yan Shaoning with a bomb that could explode at any time.

"Dad~, why did you agree~? The boy is only eighteen years old this year, what's the hurry?"

Seeing that the eldest grandson was far away, Yan Shaoning took courage and said aggrievedly.

"You bastard~! Queen's concubine Hong En, do you still want to refuse~? Besides, what the queen said is exactly what the old man thinks! You see Xiaoxuan is three years younger than you, and now he has a family and a business, how about you, boy? ~?"

When Yan Lide heard this, he stared angrily with big eyes.

Yan Shaoning shrank his neck, wiped the spit on his face, and glanced at Li Zexuan with a bitter look, his eyes clearly said: "It's all your fault for the mother!"

Sometimes having a friend who is too good is also a kind of distress~!

Li Zexuan rolled his eyes helplessly, which means: Brother, I am so good, there is nothing I can do!

Yan Shaoning almost vomited blood, if it wasn't for the wrong occasion, he really wanted to find Li Zexuan desperately at this moment.

"Cough cough~! Uncle Yan, the construction of Yanhuang Academy is up to you!"

After making eye contact with Yan Shaoning, Li Zexuan felt that the whole person was a little bad, because he felt that this kind of communication was a bit gay, so he looked at Yan Lide and said sternly.

"Hmm~! No problem~! Just now, His Majesty explained it in person, and the Ministry of Works will fully cooperate with you~! Fortunately, the Ministry of Works has not been assigned any urgent construction tasks recently, so according to the old man's preliminary estimate, the Ministry of Works should be able to give it to you. Deploy 220 craftsmen who are skilled in garden construction.

Several of them have participated in the construction of Cuiwei and Yuhua palaces along with the old man, and they are very experienced in the construction of buildings. As for ordinary civilians, you must recruit them yourself. It is impossible for the court to recruit civilians for you for free~! "

Yan Lide raised his head and thought for a while, then stroked his beard.

"Two hundred and twenty people~? That should be enough~! As for the people, the kid must have paid for it himself. This Uncle Yan doesn't have to worry about it. What the kid wants to ask is, can this kind of high-rise building be built with the construction skills of the craftsmen of the Ministry of Works? Made it~?"

Li Zexuan nodded and asked.

He knew in his heart that in the entire imperial court, except for Li Er and a few generals who were close to him, who supported Yanhuang Academy, the rest of the ministers either waited and watched, or opposed it in their hearts. After all, this involved a dispute between schools. In this case, Yan Lide was already very powerful in assigning so many craftsmen to him. As for ordinary people, he never expected the court to use corvés to recruit him for free. Since he made up his mind to build the Yanhuang Academy, he never thought of saving money. money.

The crux of the question now is, with the current construction technology of Datang, whether the ten-storey building it designed can be built.

Yan Lide took another look at the sand table, then pointed to the future teaching building of Yanhuang Academy - Guanghua Building, and smiled confidently:

"Xiaoxuan, are you worried that this building is too tall, and that the craftsmen won't be able to build it~? Haha~! Actually, you don't have to worry at all, this building is only ten floors, and the total height is estimated to be no more than 12 feet, so it is not a problem to construct. .

Have you seen the Big Wild Goose Pagoda Xiaoxuan in Jinchangfang? The pagoda has 20 floors. Compared with the Big Wild Goose Pagoda, although your tall building covers a larger area, as long as you put more effort on the support columns between the floors, there is no problem in reaching the 10th floor~ ! "

The Big Wild Goose Pagoda is located in Jinchangfang, south of Chang'an City, also known as the "Buddha of Ci'en Temple". The Tang Dynasty can really be described as a "skyscraper".

But the embarrassing thing is that Li Zexuan rarely goes to the south of the city, let alone the Big Wild Goose Pagoda, which is worthy of the name of his dead house.

"Uh, cough, that's fine, that's fine~!"

While Li Zexuan was slightly embarrassed, he breathed a sigh of relief, but he was still a little curious, such a high floor would definitely not be built only with wood, because wood can't bear such a large weight, but if it was made of bricks, the problem would be Come on, there was no cement in the Tang Dynasty, so how to build walls~?

"What kind of materials does Uncle Yan plan to use to build these buildings~?"

Such a "two" question made Yan Lide speechless. He said, "Of course it's masonry. For such a tall building, you can't just use wood~!"

Being regarded as an idiot, Li Zexuan's old face is not very good-looking. He directly asked the subject and said, "Then what kind of thing should be used to stick between the bricks~?"

Yan Lide's expression suddenly became even weirder. He paused for a while before saying, "Of course it's using glutinous rice mortar~! Xiaoxuan, you...you don't even know this, right? Then why did you design such a tall building? ~?"

"Uh, I really don't know~! The boy is thinking about designing it first to see if it can be built. If it can't be built, the boy will think of another way. Ahem, Uncle Yan, is the wall made of glutinous rice mortar firm? "

Yan Lide was speechless, but he was still praising Li Zexuan for being proficient in architectural design before. Now it seems that this guy is completely a noob in some aspects. He shook his head and said:

"Of course it's reliable~! The city walls of Chang'an City are built with glutinous rice mortar. Do you think it's reliable~?"

In fact, the ancient construction technology was far less low than Li Zexuan imagined. Although there was no cement at this time, there were many alternatives.

The West initially used clay as a cementitious material, and the ancient Egyptians used the mud of the Nile River to build unfired adobe bricks. around BC

From 3000 to 2000, the ancient Egyptians began to use calcined gypsum as a building cementitious material.

In 146 BC, the Roman Empire annexed Greece while continuing the Greek tradition of producing and using lime. The way the Romans used lime was to first dissolve the lime saliva, mix it with sand to form a mortar, and then use this mortar to build buildings. Ancient Roman buildings made of lime mortar, some of which are so strong that they even survive to this day.

Later, the ancient Romans improved the use of lime. Not only sand, but also finely ground volcanic ash was added to the lime. In areas without volcanic ash, finely ground bricks with the same effect as volcanic ash were added. Some people call the "lime-volcanic ash-sand" three-component mortar "Roman mortar".

In the history of European architecture, the application of "Roman mortar" has continued for a long time, and its performance is basically close to that of modern cement. However, in the ninth, tenth and eleventh centuries AD, the mortar technique was almost lost.

In ancient China, although there was no Roman mortar and no cement, the industrious and intelligent ancient working people invented other substitutes. The most widely used and the longest-lasting one was the glutinous rice mortar.

According to records, at least no later than the Southern and Northern Dynasties (386-589 AD), glutinous rice mortar has become a relatively mature technology.

Mixing the glutinous rice slurry into the aged lime paste can increase the bond strength, surface hardness, toughness and impermeability of the mortar, and significantly improve the firmness and durability of masonry.

Today, many ancient buildings using glutinous rice mortar, such as the ancient city walls in Nanjing, Xi'an, Jingzhou, Kaifeng and other places, as well as the Qiantang River Ming and Qing fish scale stone ponds, are still very strong despite the wind and rain for hundreds of years.

Facts have proved that glutinous rice mortar is an excellent building cementitious material. The engineering quality of ancient buildings built with glutinous rice mortar is not weaker than some modern reinforced concrete buildings.

Therefore, the wisdom of the ancients should not be underestimated. The craftsmanship of the ancients is not useless, and there are still many shining points.

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