I! Pretending to Be Reborn, Director of Doomsday Hoax

Also because of this,

Yan Yan knew too well how precious Xu Qiu's advice to Shenlong Construction Engineering Group was that night!

Without Xu Qiu's guidance, Yan Yan wanted to develop the concrete in his hand, and the time would have to be delayed by at least one year! !

"Director Xu, you are truly a man of heaven!" Yan Yan couldn't help but sigh with emotion.

The others nodded.

"That's right, the dungeon in the Dragon Kingdom was planned by him alone, as well as the nuclear power difference machine, etc. All the doomsday constructions in the Dragon Kingdom are closely related to Director Xu!"

"It takes a hundred years to produce a talent, a thousand years to produce a genius, ten thousand years to produce a savior, and 10 years to produce a Director Xu!"

The group of people who work on engineering admire Xu Qiu the most.

never high above,

But he can use his talent to crush top figures in any field!

Zou Botao, Yan Yan, Huang Yuan, Ji Chengping, Xu Fu, and even Mrs. Mary of Yingguo, who are not full of students' thirst for knowledge and admiration for Xu Qiu!

"However, our cold concrete needs to continue to advance. Although it can stand in the Little Ice Age, the sun will go out after that." Yan Yan said thoughtfully.

In fact, as long as the essence of concrete does not change, it is impossible to exist in an environment of more than minus 200 degrees.

From the perspective of the future, even if there is no era of extreme cold, the concrete of the steel structure, or the pure steel structure, is better.

In stark contrast to the Dragon Kingdom,

In Western countries, regardless of the size of the building, steel beams, steel columns and steel plates are mainly used as the building structure, while in Longguo, concrete or reinforced concrete is mostly used.

There are several main reasons for this.

In the early days of Longguo's development, the output and quality of Longguo's steel was relatively weak, so concrete, which is less difficult to make, became the mainstream of Longguo's architecture.

However, in the past two years, the industrial level of Longguo has advanced by leaps and bounds,

A large number of public buildings have adopted steel structures.

For example, my country has built and is building more than 200 super high-rise steel structures or steel-concrete structures over [-] meters in length.

In terms of long-span bridges, grid frames, reticulated shells, and tensioned string structures have been widely used. Today, the construction of extremely cold railways in the Luding and Zhedo Mountain sections uses such technologies.Yan Yan's disciple said:

"But concrete still has many advantages, such as its ability to resist compression.

Steel structures are actually more used in high-rise buildings. For buildings with small spans and low heights, concrete has certain advantages.

For example, good durability, fire resistance, integrity, modelability, etc. are all incomparable advantages of steel structure buildings. "

Yan Yan nodded.

If not, they would not have been able to develop cold concrete with great pains.

Before the arrival of the extremely cold era,

The birth of cold concrete may inject new impetus into the construction of dungeons, and even the construction of many secondary doomsday facilities in Longguo.

"Just wait for Director Xu's news, he nods, and our cold concrete can be announced to the world!"

Yan Yan had a joyful smile on his face.

After studying concrete for a lifetime, and in order to bring the concrete industry in Longguo to the international level, he went to school several times and studied in the fields of material science, chemistry, structural engineering and engineering mechanics. Longguo's concrete goes to the world!

Moreover, as the Dragon Kingdom gradually gained the title of infrastructure madman,

The status of concrete science has also risen. In the end, this seemingly untechnical and even shameful subject,

Like high-performance ceramics, high-performance alloys, high-molecular polymers, high-performance plastics and other engineering materials, they have become new research objects in material science.

Yan Yan had imagined countless endings.

For example, their team studied for more than a year, and finally launched Longguo's new concrete, which shocked the world.

Or, in a polymer synthesis laboratory, an extremely superior concrete sample was accidentally obtained, and finally with this sample, many experiments were performed to obtain epoch-making concrete.

Or the emergence of new science and technology will allow concrete to embark on another development path...

But only did not expect,

The concrete industry in Longguo turned out to be a person who came to Shenlong Construction Engineering Group to stay for a night, gave a few words of advice, and took off since then! !

With tears in his eyes, Yan Yan was so excited that he couldn't control himself, and said:

"I will never forget that night, Director Xu came to the production workshop to guide, and opened the peak era of Longguo Concrete..."

Everyone's faces were filled with uncontrollable excitement.

They are too aware of the hardships of this industry, and every step is difficult.

Who would have thought that Xu Qiu's few words of guidance directly solved the biggest problem of concrete at present, breaking through the shackles, leaping, and creating the world's first cold concrete!

An old professor of materials science suggested: "The Sakura Kingdom, don't you always like to enshrine the gods? The rice that has been cooked for decades, what is it called, the god of rice, and the screw that has been made for decades, also called, screw God, our Director Xu, it is no exaggeration to call him the "God of Concrete!"

Another professor of structural engineering added: "Director Xu is more than just the god of concrete! The dungeon, the nuclear power dragon, and the difference engine, which one was not created by him!"

Just when Yan Yan was about to speak, there was a burst of orderly footsteps outside the laboratory door.

It was the steady and advantageous dull sound of military boots stepping on the ground.

In an instant, everyone in the laboratory stood up, with serious faces, waiting.

They all realized what was going to happen, everyone's face was full of respect, and... looking forward to it! !

"Finally...are you going to meet Director Xu?"

"Severe Cold Concrete was born under the guidance of Chief Xu, and he is the chief engineer of this severe cold concrete!" Yan Yan did not dare to take credit for it.

In fact, no one disputes this.

Xu Qiu solved the biggest problem of cold concrete.

If you take a mobile phone for comparison,

Xu Qiu provided the most important and critical chip,

However, Yan Yan and others just integrated and improved the battery, camera module, and other secondary components.

thump.

thump.

Boom!

The T-boots seemed to be stepping on everyone's heart, and Yan Yan and the others couldn't help but get nervous.

I don’t know when,

In the hearts of all Long Kingdom people, being summoned by Xu Qiu has become a supreme honor.

Even, it can be used as a talking point for Guangzong Yaozu!

As the laboratory door was pushed open,

Two soldiers in solemn military uniforms with piercing eyes appeared at the door.

"Professor Yan!!"

The two soldiers seemed to be carved out of the same mold, and their movements were incomparably uniform.

"Two comrades..."

Professor Yan's voice was a little choked up, and he looked at the two of them bewilderedly.

The soldier took out the red-headed document, and said: "Director Xu, Professor Yan, and the main members involved in the development of severe cold concrete, immediately went to the Emergency Bureau to be summoned, and at the same time, to the world, officially announced the birth of Longguo severe cold concrete!"

"Professor Yan, comrades, let's go!"

Raspberry Country.

Multifunctional intelligent concrete research room.

Campbell, the world's master of concrete materials science and the chief president of the International Association for Structural Concrete, was looking through the documents in a hurry.

With the development of aviation, aerospace, and military high-tech, problems such as vibration control of large space structures, adaptive shape control of wings, damage monitoring and identification, and self-repair have become increasingly prominent. Smart materials and structures are about to usher in an era of great demand.

Multifunctional smart concrete is one of them.

In Campbell's conception,

Multifunctional smart concrete can complete functions such as self-sensing, self-adaptation and self-healing!

Before the multifunctional smart concrete, the experienced Campbell has developed world-leading concrete types such as ecological concrete, electromagnetic barrier concrete, and biocompatible concrete! "Nowadays, some problems of multifunctional smart concrete have been solved. . " Campbell frowned thoughtfully, somewhat complacently.

Multifunctional smart concrete has three main characteristics,

Among them, self-induction and self-regulation have been solved through technical means.

Concrete material itself does not have self-induction function.

However, adding a guide phase to the composite part of the concrete base material can make the concrete self-inductive.

At present, Campbell's team has explored three types of conductive phases, namely polymers, carbons and metals.

The most commonly used of these is carbon fiber.

Incorporating chopped carbon fibers of a certain shape, size and content into concrete materials can make the material self-sensing for internal stress, strain and damage.By observing the macroscopic behavior and microstructural changes of materials,

Campbell discovered that the change in electrical resistance of the cement-based composite corresponds to changes in its internal structure.

For example, a reversible change in resistivity corresponds to reversible elastic deformation, while an irreversible change in resistivity corresponds to inelastic deformation and fracture.

Moreover, this composite material can sensitively and effectively monitor working conditions such as tension, bending, and compression, as well as the internal conditions of the material under static and dynamic loads.

The only problem is,

The additional cost of adding chopped carbon fiber to concrete will increase by approximately 30.00%!

In addition, the self-adjusting function is also achieved by adding component materials with driving functions.

What stuck Campbell now was the self-healing ability.

He is desperate now.

If the development of multifunctional smart concrete is compared to a progress bar.

Now, 90.00% of the work is done, just the final self-repair!

However, it is not in the foreseeable future to add the self-healing function...