Longguo has already begun to think about how to carry out entertainment activities when the people are too bored to avoid disasters!
"Now there is one more problem..."
Xu Qiu's words cheered everyone up.
"what is the problem? "
"How to do construction projects during the Little Ice Age."
Zou Botao was taken aback, and asked: "Director Xu, in the sub-zero weather, why don't you suspend the progress of the dungeon first?"
Although Lu Guangyuan didn't understand architecture, he also knew some common sense, and asked: "Director Xu, at such a temperature, concrete will not be usable, how to carry out construction work?"
Xu Qiu smiled, "So, as long as we design concrete that can be used in cold environments, we can solve this problem."
"Everyone! This is just the Little Ice Age, and the temperature has dropped to minus twenty or thirty degrees at most!"
"If all the dungeon construction projects are stopped and precious time is wasted just because of this temperature, then, in the face of the doomsday in eleven months, what should we... ?” Zou Baitao and others finally came to their senses.
It's just the Little Ice Age!
It's not the end of the world at all!
After all, it was just an assessment!
Xu Qiu looked far-sighted and asked, "Now, which company is the most in-depth research on special concrete in China?"
Lu Guangyuan said respectfully: "Director Xu, Shenlong Construction Engineering Group Co., Ltd. has produced a variety of special concretes, and they are currently making concrete that can be used under low temperature conditions..." The applicable temperature of concrete, It is 35 to [-] degrees Celsius, and some concrete with special technology can reach [-] degrees Celsius, or even around zero degrees Celsius.
But if it is lower, you have to add antifreeze.
The antifreeze will cause the strength of concrete to deteriorate, and the effect will also be affected.
Xu Qiu asked: "Is Shenlong Construction Engineering in Tiandu?"
Hearing this sentence, Zou Botao and others showed surprise in their eyes.
Does this mean that Xu Qiu is going to inspect again? !
He only went to the Capital Iron and Steel Group last time, and gave the gating system design plan for bainite steel, helping the Capital Iron and Steel Group solve a much-criticized problem.Now we are turning our attention to the concrete development industry...
Could it be that Xu Qiu also researched concrete? !
With a trembling voice, Lu Guangyuan said, "Director Xu, this Shenlong Construction Worker is in the suburbs of Tiandu. If you use a helicopter, you can get there in half an hour..."
"Then go and have a look." Xu Qiu stood up, speaking involuntarily.
On this day, Shenlong Construction was a sensation.
"Director Xu is coming to inspect!!"
"Director Xu is coming to our group to check the design progress of the extremely cold concrete!"
"Hurry up, everyone, show your best energy. This is the chief planner of the dungeon construction. At present, Director Xu is responsible for all the work of Dragon Kingdom to fight against the extremely cold era! You must express your utmost respect!"
"You don't need to say it! This kind of hero comes to us, and our hearts are naturally full of admiration and gratitude!"
Leaders and workers are extremely excited at the moment.
A member of the management department shouted in the factory with a loudspeaker: "Everyone, keep working!"
"Every piece of building material you produce will be used in the construction of the dungeon! In the future, your son, his daughter, and our country will all live in the dungeon and live in the dungeon built with the materials we produce. In the city!!"
Some workers said enthusiastically: "Good! Work hard!"
Others are also responding.
"Support Dungeon Construction!"
"We want to produce more high-quality building materials!!"
At this moment, Shenlong Construction Engineering, the extremely cold concrete production department.
Yan Yan, who has developed two special steels and won the National Key Patent Award, is the chief engineer of this extreme cold concrete project.
Before that, he had been researching the whole package of storage, transportation and pouring of concrete raw materials under cold conditions.
He has carried out a lot of research work in terms of equipment, new material development, construction technology, insulation measures, etc., and finally, the extreme low temperature of concrete has been dropped to about minus ten degrees.
But now, there is still a very large distance from minus two hundred degrees in the extremely cold era!
When Yan Yan heard that Xu Qiu was coming to inspect, he had a feeling in his heart that he was looking for his own department!
Sure enough, an hour later, Xu Qiu came to the Extreme Cold Concrete Production Department.
Yan Yan looked at the young man surrounded by the chairman of Shenlong Construction and more than ten high-level officials with a surprised expression.
Too young, younger than what you see on TV!
Next to him were Li Bingqing who was always on guard, Zou Baitao, Lu Guangyuan and others.
"Professor Yan, Director Xu has come to inspect!" the chairman of Shenlong Construction Engineering shouted excitedly.
Only then did Yan Yan come to his senses, and hurried over, and saluted respectfully.
"Professor Yan, you are welcome. I am here this time to see your extremely cold concrete."
Yan Yan was taken aback.
What he hates the most is the high-level executives who don't understand anything, pointing fingers at the products he designed...
The chairman and others were also stunned.
They knew Yan Yan's character very well.
Although this person is humble, but in the process of work, he only accepts death, and he really hates the interference of other ignorant people!
A few years ago, Yan Yan developed a concrete that can guarantee good performance under the high pressure of the Qingzang Plateau. The chairman asked "can the cost be lowered?" and the other party took out a list of raw materials. Rebuttal one by one.
Obviously, Xu Qiu doesn't understand concrete technology. If he makes any comments, Yan Yan, the little old man, don't make the same old mistakes again!
The chairman gave Yan Yan a pleading look, hoping that he would not make the chief planner of the big country unhappy.
After a short silence, Yan Yan said: "Okay, Director Xu is welcome to visit and inspect the extreme cold concrete production department of our Shenlong Construction Engineering Group!"
Xu Qiu nodded and entered the concrete research and production workshop.
The entire workshop is full of equipment such as mixers, water pumps, air compressors, and spirals. There is also a dust suppression device above.
Xu Qiu glanced at it. His master-level knowledge of mechanics allowed him to understand the structure of the dust suppression device in an instant.
Cases, protective boxes, drive motors, rotating rods, clappers, air pumps, connecting pipes, etc. are all over the entire production workshop.
Yan Yan introduced: "We are precisely controlling the slump, expansion, air content, mold entry temperature and other indicators of the concrete mixture, and each type of concrete will be sampled every hour."
"Currently, the lowest temperature we can achieve is about minus ten degrees Celsius."
This is a temperature to be proud of!
You know, for ordinary concrete, the construction temperature is between 35 degrees and [-] degrees!
Xu Qiu's expression didn't change, he was clearly dissatisfied with the temperature.
"Can it be lower?"
During the Little Ice Age, most parts of the Dragon Country will drop to about ten degrees below zero, and some northern regions may even drop to minus twenty or thirty degrees below zero!
Yan Yan didn't like the feeling of being pointed out by laymen. He held back his temper and said, "Director Xu, although there is still a big gap between minus two hundred degrees, this is our group, and it may be the world. The concrete industry can achieve very low temperatures..."
"It's not easy to go down one degree Celsius!"
Xu Qiu nodded and said, "Let's change the research thinking and manufacturing process."
"Um? "
Yan Yan - stunned.
The chairman and the others broke out in cold sweat, they were afraid that the little old man Yan Yan would say something that would make Xu Qiu unhappy!
People like Yan Yan do not consider status, fame and fortune, etc., but admire those who surpass themselves academically... Xu Qiu may not be able to restrain him!
However, Xu Qiu's next sentence stunned everyone present.
Xu Qiu looked calm, and said calmly: "Use cement with high activity and high heat of hydration, and considering the corrosion resistance of engineering structures, we need to choose cement that is suitable for water conservancy and water diversion projects that are eroded by sulfates." P.HSR42.5 grade high sulfate-resistant Portland cement."
Yan Yan was horrified, "Director Xu, you...do you know the concrete development process?"
This question is also a common question of the chairman of Shenlong Construction Engineering, Zou Baitao, Li Bingqing and others! !
Xu Qiu said, "I've dabbled a bit."
Zou Botao standing beside him couldn't stand anymore.
And... another little dabble!
Director Xu, Director Xu, how many things have you hidden? !
After everyone found out that Xu Qiu was not an outsider, Yan Yan's attitude towards the director changed drastically.
He started to make things difficult, and asked: "Cement varieties can be improved, but what about admixtures, Director Xu, how do you plan to choose admixtures?"
Xu Qiu glanced at Yan Yan and said: "Using high-performance water reducers such as poly light acid can reduce the amount of mixing water while maintaining the same slump. This can not only ensure the compactness of the poured concrete. Accelerates the early strength of concrete."
The smile on Yan Yan's face froze instantly.
Before that, their concrete faced a problem. At low temperature, the early strength could not keep up!
And this is also one of the reasons that restrict their concrete from continuing to develop at a low temperature of minus ten degrees.
"Is poly light acid admixture really useful?!" Yan Yan asked subconsciously.
After trying hundreds of admixtures, none of which worked, Yan Yan and his team felt that admixtures could not solve the problem, so they put the research center in other places.
Now, from Xu Qiu's mouth, he actually learned that light polyacid seems to be useful...
So, his first reaction was doubt!
Xu Qiu gave an affirmative answer, "Let your team try polylight acid."
"What about the ratio of materials, Director Xu?"
"Cement: sand: small stone (particle size 5~20mm): medium stone (particle size 20~40mm): water: admixture (water reducing agent) is 1: 1.68: 1.15: 1.73: 0.4: 0.045."
At this moment, the last trace of doubt in Yan Yan's heart was eliminated.
To be able to say this sentence, if he didn't have an in-depth study of the concrete process, he wouldn't believe it!
His tone gradually became respectful, he bowed slightly, and asked: "Director Xu, we still have a problem. After many explorations of our sand and gravel aggregates, we have not been able to find the most suitable one. standard, how do you think this sandstone aggregate should be produced? "
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