"Brother Yu, what about then?" asked Xiao Shen.

"Then?" Yu Qingyang beckoned to a worker, "dig it out!"

After the workers dug out the ring knife, Yu Qingyang gently removed the ring cover, "At this time, use the soil repair knife to cut off the remaining soil at both ends of the ring knife from edge to middle, and use a ruler to detect until it is leveled."

Then take out the soil in the ring knife and put it on the scale to weigh it!

Then use the formula, 4*(m1-m2)/πd²h to find the wet density of the sample!

M1 refers to the weight of the ring knife with soil, and M2 refers to the weight of the empty ring knife.

We can omit it here, because what we weigh now is directly the weight of the soil.

So just multiply 4 by the weight we just weighed with the scale, and then divide it by πd²h!" Yu Qingyang said very patiently, as for whether they can listen to it, it depends on their own.

They are in school, and the teachers don't care whether they learn or not.

When I arrived at the unit, I couldn't say that there was no such patience as Yu Qingyang could explain to them, but there were very few!

"Brother Yu, is this the end?" Xiao Jiang also asked.

Everyone is about the same age, they are all young people, Xiao Shen and Xiao Jiang saw that Yu Qingyang was easy to talk, so they didn't have so many worries, and they thought of what to ask.

"No, this is the first step, the next step is to measure the moisture content in the soil, and then calculate the dry density!

Use an alcohol stove to dry the soil sample you just taken, and then weigh it!

Raw soil weight - drying soil weight, then divide by drying soil weight, and multiply by 100% to get the moisture content!"

"Brother Yu, how do you calculate the dry density?" asked Xiao Shen.

"The formula for calculating dry density is that the wet density is divided by 1 + moisture content.

The degree of compaction is the dry density divided by the maximum dry density multiplied by %.

The maximum dry density is the data obtained in the laboratory!"

Yu Qingyang explained in his mouth, but did not listen to the movements in his hands.

Such work as detecting compaction has not been done by Yu Qingyang for more than ten years in his last life.

Fortunately, I haven't forgotten it, I don't know if it's a rebirth benefit, and now I don't have a sense of rustiness when I do it.

"Brother Yu, you are so powerful!"

"What's amazing? These are the most basic knowledge of dry technology!

You've got it in the book, but you didn't pay attention!"

Yu Qingyang has brought many interns and graduates from technical colleges, and knows that they came out of technical colleges at the beginning of junior high school.

You really can't learn much in school.

Few good students will go to technical colleges, and they are only those with bad grades.

The management of a technical institute is not much stricter than that of a university, how much do you expect such a student to learn?

Most of them went to school on the construction site after graduation.

Those who can know how to learn and adapt to the construction site can continue to work in this industry.

Since the cancellation of the allocation of technical secondary schools and technical colleges this year, a large number of graduates have directly changed careers and gone to other industries.

"Xiaoyu, are you done?"

"This one is coming!

You two take the ring knife and go over there to get another soil sample!" Yu Qingyang casually instructed the two of them to work.

After teaching for a long time, it's time to do some work.

"Xiaoyu, you have to get it right, don't cheat!"

"Brother Sun, I'm cheating on the degree of compaction, isn't that covering my ears and stealing the bell?

Don't worry, I won't do that!" Yu Qingyang responded with a smile.

There were two people who helped to take soil samples, and Yu Qingyang did it very quickly, basically using an alcohol stove to burn the soil for a long time.

After all the work was done, Yu Qingyang sorted out the test records, climbed the embankment and handed them to Sun Gong, "Brother Sun, look, the compaction degree is all qualified! It is above 96 percent! You see if I can lay geotextiles and support formwork, right?"

"Okay, let's do it!" Sun Gong glanced at it, nodded, and said to Nunu next to him, "Your little girlfriend has been waiting for you for a while!"

Yu Qingyang looked at Sun Gong's words and said with a wry smile: "Brother Sun, why are you making such a joke?"

You can't talk nonsense, I don't care if you spread it, people are little girls, and they don't have a good reputation!"

Next to Suzu there was a little boy who was about the same height as her, and that was her brother.

Both sisters and brothers are thin, slender and tall, less than 1.7 meters tall.

Ling Ling saw Yu Qingyang looking at her, she didn't dare to come over, just stood there and smiled sweetly.

Seeing Ling Ling's smile, Yu Qingyang's heart couldn't help but twitch.

At this time, it was more than three o'clock in the afternoon, when the sun in the sky was poisoning.

These two fools actually stood under the sun and waited for themselves.

Look at Uncle Tian is inspecting the construction site accompanied by the senior section chief and supervisors Liu Gong and Wu Gong.

Stand in front of the small concrete batching plant and study the necessity and importance of the small batching plant.

Seeing the vigor of their research, Yu Qingyang didn't want to follow in the past.

So she walked up to Ling Ling and her brother, "Why don't you two get hot under the shed to hide from the sun?"

"It's okay, we're not afraid of the heat!Brother Yu, this is the loach we caught!" Lingling's face was flushed, and her brother's face was almost red, with antiquity in his eyes.

"So many?" asked Yu Qingyang in surprise.

At the feet of the sister and brother there were two tin buckets, both of which contained more than half a bucket of loaches.

The iron bucket used in the countryside can hold fifty catties of water, Yu Qingyang picked up the bucket and checked it, and there were almost twenty or thirty catties of loaches in one bucket.

"My brother is very good at catching loaches! he caught most of them!" said Suzuki, with a cheerful smile on her face.

Yu Qingyang felt an inexplicable distress in his heart, these two fools, it is estimated that they didn't eat lunch in order to catch loaches.

"You haven't eaten yet, have you?"

"It's okay, we're not hungry, we'll go home and eat later!"

"Okay, this bucket is thirty catties, two buckets are sixty catties, I'll give you six hundred yuan, and the other two buckets will also be given to me!

"It's too much, Brother Yu, you give ...... Four...... Five hundred dollars is enough!"

"Okay, don't earn it, your brother Yu is not short of this money!"

"Thank you, Brother Yu! I'll send you loaches tomorrow! By the way, do you want yellow eels?" Ling Ling took the money and said happily.

"Yes!"

Yu Qingyang smiled bitterly in his heart and promised.

Watching the siblings bounce away.

Speaking of which, Ling Ling is only sixteen or seventeen years old, and he is also a child, and his heart is still very naïve.

I just thought that catching loaches could be sold for money, but I didn't think about it, there were only twenty or thirty people on my side, so much food?

No matter how good the loach is, you can't eat it every day!

Forget it, let's atone for the sins of the previous life!

The more I think about it, the more I feel that what I did in my last life is quite scumbag!

"Yoko!" Uncle Tian walked over.

"Uncle Tian!"

"What's the matter with that girl?" asked Uncle Tian as he looked at the back of Ling Ling who was far away.

"What's going on?" Yu Qingyang touched his head.

"You kid, don't pretend to be confused for me!I can remind you, don't mess with me!" Uncle Tian glared and reprimanded.

Uncle Tian has worked in the water conservancy industry all his life, and this situation has been seen a lot.

There are several people in the company, and the daughter-in-law was brought back from the construction site, that is, she messed around on the construction site, and was detained by other people's families, and she was not allowed to leave if she did not get married.

It's not that Uncle Tian looks down on rural people, he is also a rural person.

Those who brought their daughters-in-law back from the construction site were obviously not as good as others.

Moreover, after the freshness has passed, living habits, cultural differences, and family conflicts are continuous.

Section Chief Gao told Uncle Tian about this, also for Yu Qingyang's good.

I'm worried that he is young and can't control it, and in the end it will end badly.

Yu Qingyang touched his nose and promised with a smile: "I know, Uncle Tian, I won't mess around!"

"Just know what else you have to do? I'll be back in a moment! Do you want me to talk to your parents?"

"Uncle Tian, are you leaving, will you leave after eating?"

"No, it's not early, no matter how late it is, it's hard to walk when it's dark!"

"Oh, by the way, Uncle Tian, you can bring back these two buckets of loaches!

"Yo, this loach is really good! Such a big loach is not easy to buy in Quanshui City!" Uncle Tian glanced at the tin bucket and said with a smile.

"Wait a minute!"

Yu Qingyang ran to find two pieces of plastic sheeting, wrapped the mouth of the iron bucket, and tied it with a rope, for fear that the loach would be suffocated to death, so he poked a few small holes in the plastic sheeting.

Then he carried it to Uncle Tian and loaded it into the car.

Uncle Tian is gone, and Sun Gong and they are also gone.

Yu Qingyang arranged for workers to start laying geotextiles.

Between the concrete slope protection and the soil slope foundation, a layer of waterproof geotextile should be laid.

After laying the geotextile, the formwork can be supported.

The toothed wall below and the criss-cross ground beam in the middle are 50 centimeters thick, the underground groove is buried 20 centimeters deep, and the concrete slab is 20 centimeters thick, so the final formed ground beam is 10 centimeters higher than the concrete slab.

This is ten centimeters higher and needs to be shaped using a template.

"Brother Yu, what's that white one?" Xiao Shen leaned over to Yu Qingyang and asked in a whisper.

"That's geotextile, it's waterproof! Although concrete has the effect of waterproofing, it can't be 100% waterproof!

So add a layer of waterproof geotextile waterproof!"

"Waterproof geotextiles?" and non-waterproof geotextiles?" Xiao Jiang also asked.

Yes, geotextiles are divided into two types: waterproof geotextiles and permeable geotextiles.

They don't work the same!

Waterproof geotextile, as the name suggests, is for waterproofing!

Permeable geotextiles are used to prevent soil erosion!

This means that water can pass through the geotextile and stop the earth. Yu Qingyang explained carefully.

"Brother Yu, what is the difference between waterproof geotextile and permeable geotextile?

"You see, there is a waterproof membrane behind this waterproof geotextile!

"Stop! You can't be so connected!" Yu Qingyang suddenly shouted to stop.

"What's the matter, little boss, is it right to tie twenty centimeters?" the worker looked at Yu Qingyang suspiciously.

Yu Qingyang was not in a hurry, and walked down the embankment to explain to them carefully, "I blame me for this, I didn't make it clear, it's right to lap twenty centimeters, but you can't overlap like this, you have to use the geotextile above to press the geotextile below." ”

"Brother Yu, there is no difference, they are all overlapping twenty centimeters, pressing up and down, pressing down, aren't they all the same?" Xiao Shen also followed Yu Qingyang down the slope, listened to Yu Qingyang's words, and asked suspiciously.