Chapter 280 Three times the strength of concrete, is that awesome?
Chapter 280: Three times the strength of concrete, is that awesome?
Ever since Luffy and others came here, Zhao Lin's beautiful eyes have been swaying on his body, lingering on him.
Of course, Luffy could see this, but the current situation did not allow him to waste his strength! He had to give up and turn a blind eye to the beautiful young woman's secret glances.
It wasn't until they left that Zhao Lin bit her lip and chopped her feet.
Matsushima Nanako had left long ago. After receiving the evolution potion, she couldn't wait to return to the room, locked the door, and injected the evolution potion.
In the room, the sound of video connection request kept ringing.
Regarding the mutation of the T virus, Luffy informed his parents on the other side of the ocean via satellite phone that night, as well as other information, including the fact that evolved beasts can be tamed, information that Jack observed, etc.
Everything is fine on my parents' side. Just like here, the two parents firmly control a force called "DAWN"
Y version of Dawn! Dawn across the ocean!
Although life in the base is full of trivial things, it is undoubtedly comfortable.
Luffy basically lives a life of reaching out for clothes and opening his mouth for food.
Lin Qiaoni and Lin Qiaoni take turns preparing the meat of evolved beasts every day. Now Shuguang has shifted the strategic target from zombies to evolved beasts, and everyone knows that the big boss likes to eat evolved sheep.
Legs, so as long as several companies of soldiers go out, let alone other things, they will definitely be looking for and hunting evolved sheep.
Perhaps due to the lack of a large amount of human activities, after another week, the weather became extremely cold, with the lowest temperature even reaching minus 25 degrees Celsius. This was unbearable for the survivors who had not experienced extremely cold temperatures.
, even the first-order evolvers cannot stay outdoors for a long time. All diesel-burning vehicles cannot be started due to the cold weather. Shuguang’s outdoor operations have almost stopped, and there are only a few company commanders and deputy company commanders.
The higher-ups unite to go out on patrol and perform certain tasks.
The remaining survivors had to stay in dormitories or living areas, because only these two places had heating.
A comfortable life always passes quickly, and a week passes quickly.
Early this morning, news came that there were results from the concrete laboratory, and I hope Luffy went to take a look.
The three of them were fully armed, especially Xiao Xiaoling. She was still at the first level of strength and could only wear a thick down jacket to ward off the cold.
I drove to the commercial concrete mixing station four kilometers away from the airport. This is a ditch to the west of the airport and is within the scope of the airport. After the land was leased, a concrete mixing station was built. Here, there is a sound concrete laboratory.
Li Yongjun, Tan Zhe and others were waiting in the guard room of the mixing station early in the morning. When he saw a vehicle coming from a distance, he had already gone out to wait.
After Luffy and others got out of the car, everyone bent down and said hello, "Big boss, boss, Assistant Xiao!"
"Is there any result?" Luffy asked, and then they saw the excitement on Tan Zhe's face.
Li Yongjun nodded and said, "Big boss, it's really incredible. I have been working on projects all my life and I have never seen concrete with C120 strength level!"
"Don't tell me you haven't seen it before, we probably haven't even heard of it!" Luffy shrugged.
"Big boss, boss, please follow me to the laboratory!"
From afar, Luffy saw the concrete cubes placed in the courtyard.
"These are for freeze-thaw cycles!" Li Yongjun explained.
Entering the hall of the laboratory, the hall was now filled with densely packed concrete test blocks, leaving only a path for people to pass through. Some of them were also packed in boxes. The liquid in the boxes was soaked in concrete and also
There are some instruments and equipment that Luffy can't even name.
"What is the freeze-thaw cycle?" Luffy asked.
Li Yongjun explained, "Back to the chief, you have also seen that when winter comes in the north, the weather is cold, and the water in the concrete will be in a frozen state. After winter, the water inside will melt again. This freeze and thaw
There will also be thermal expansion and contraction, which will cause damage to the internal structure of concrete. One freeze and one thaw is called a freeze-thaw cycle. According to the previous requirements, concrete has D100, D150, etc.!"
"Understood!" Luffy nodded and asked again, "How many cycles have you done?"
"The weather is cold now. We put the test block outdoors and achieved the freezing effect in less than half an hour. Then we put it in a concrete boiling box and boiled it for more than ten minutes to completely defrost it. In one week, we have now made 150
It’s the first freeze-thaw cycle! Let’s press these test blocks later to see how much strength loss there will be!”
"What about this?" Lin Qiaoni pointed to a large instrument with six cylindrical steel test molds containing cylindrical concrete specimens.
"This is a concrete anti-permeability testing machine. We tested according to the maximum water pressure of the anti-permeability machine. Until now, there has been no water seepage. To be honest, I don't know what the anti-permeability level has been, but at least it will not be worse than the doomsday
The previous maximum impermeability level was low! The impermeability test was successful!”
"What about this?" Lin Qiaoni asked, pointing to a blue water tank.
"This is an alkaline environment! There should be no problem with this. The strength of concrete will be better in an alkaline environment!"
Li Yongjun said, pointing to the box next to him, "This is an acidic environment, and acid is more damaging to concrete. Leader, you see, the surface of the concrete specimen has been corroded to some extent, but the degree of corrosion is not very great.
It was a comparative test, no addition was made. Well, the concrete without the addition of 'reinforcement agent' has been corroded to the point of disgrace!"
Several people looked to the side, and sure enough, the concrete specimens inside were chewed, revealing stones of different sizes inside.
Li Yongjun explained, "The cementitious material was corroded and the coarse aggregate was exposed! The degree of corrosion of the concrete with the addition of 'reinforcement agent' is very small and can almost be ignored!"
"What about the strength? How much has it increased compared to before?" Luffy asked.
Li Yongjun looked at Tan Zhe and said with a smile, "Big boss, boss, let me give you a try. Let's press a few sets of test blocks together and have a look!"
"." Luffy touched his nose and said, "Okay!"
The people under my command have personalities.
"Come on, Xiao Wang, let's start with a group of C30 ordinary ones!" Li Yongjun looked at his hands.
At this time, a young man in the corner took a concrete specimen and placed it in the press near the door.
When the press beeped and the pressure was released, everyone saw 32.5MPA displayed on the computer screen.
The man wanted to pick up a piece and put it in, but was interrupted by Li Yongjun, "Okay, let's press this group again!"
Then Li Yongjun continued, "Big boss, boss, the remaining ordinary test blocks will not be pressed. The strength is at the normal level before the end.
We boiled it to achieve strength for 28 days, then boiled the concrete with the ‘reinforcement agent’ for the same period of time, and then measured its strength.”
At this time, the test block has been put into the press and the press has been started.
The value on the screen continued to increase, and soon exceeded 32.5MPA, but the press had not yet released pressure.
"As long as the test block is not crushed, the press will continue to work until it reaches its maximum capacity, 2000KN!"
The value continues to increase, 50MPA, 60MPA, 70, 80MPA, it has not stopped and continues to rise.
Until the data showed 96.2MPA, everyone heard a loud noise, and concrete fragments splashed out from the press and hit the iron door, making a "pop" sound.
"According to the results of these two days, the 'reinforcement agent' can increase the strength of concrete three times!" Li Yongjun said excitedly.
"Three times the strength of concrete? Is it awesome?" Lin Qiaoni touched her head and asked the question that all three of them wanted to ask.