Agriculture Idol

Chapter 106 Glass Pumice
The bricks for the flower beds were done, but another problem emerged.

This problem was raised by the master of the maintenance department in the early days, but because it has not reached that point, it was temporarily ignored by everyone.

"The roof has a maximum load-bearing limit." Seeing that the soil and bricks were ready, the master from the maintenance department asked the question again, "Depending on the different buildings, there are very detailed specifications for the load-bearing limit per square meter."

The master in the maintenance department took out the architectural drawings that had been prepared a long time ago. For the 80-story building of Geyue Entertainment, the architectural drawings are a thick book.

"The part marked 'LL' (Live Load) on the roof is the bearable weight. According to this drawing, the floating platform on the roof can bear a weight of 300 kilograms. In fact, when the floating platform was built, it did not think of carrying soil. This function. So Zicheng, you have to think about this issue carefully."

"How is this possible...how can this be..." Li Chengxin took out his mobile phone and checked the weight of the soil on Baidu.

The results show that: 10 cm thick natural soil (black soil) weighs 170 kg per square meter.

Calculated according to this ratio, the floating platform on the top floor can only put 6 centimeters of soil per square meter, specifically, 5.8 centimeters.

"With this thickness, nothing can be planted!" Li Chengxin looked desperate.

As a countryman herself, and having participated in so many live broadcasts of helping farmers, Li Chengxin has also come into contact with the roots of various plants.

He knew that even short-rooted rice requires at least 10 centimeters of soil.

"The thickness of 6 centimeters... probably can only grow bean sprouts..." Li Chengxin bent forward in frustration, ORZ.

"Speaking of..." Zhou Hao looked at the master in the maintenance department with some playfulness, "We have prepared all the bricks and soil for the flower bed, master, you have not stopped our actions, does it mean that you have made the soil change?" Light method?"

The master in the maintenance department did not expect that he would be exposed so quickly, so he had to spread his hands: "The light soil that allows plants to fully take root does exist. This kind of light soil is called artificial glass pumice."

Glass pumice, also called perlite, is a kind of porous light inorganic material formed by grinding various waste glass in daily life into powder, adding different additives, and firing and foaming at high temperature.It gets its name because of its light weight and its production and processing from waste glass.It is a synthetic silicate material with pore sizes that can be adjusted during production.

Under the same volume, the weight of glass pumice is one-third of ordinary black soil.

When used in planting, the drainage of glass pumice is also very good, and the pores in the stone can also retain a certain amount of water, allowing the roots of plants to grow healthily.

In this way, when ordinary soil can only lay 6 cm, 20 cm can be placed with pumice.

Li Chengxin breathed a sigh of relief after the master in the maintenance department took out a bag of glass pumice. The final plan was to lay a layer of glass pumice under the soil first.

What Li Chengxin has to do now is to calculate the ratio of glass pumice to black soil.

The master of the maintenance department has already prepared the experimental props together with the program team, and took measuring cups, electronic scales and other objects.

Calculated according to the ratio, the area of ​​a measuring cup can bear 500 grams of weight.

Li Chengxin first took a measuring cup and put the pond soil they had made before with alginic acid added into it. 500 grams of pond soil was placed in the measuring cup by 6 cm, which seemed to be a very standard weight of black soil.

In another measuring cup, Li Chengxin first put 9 cm high glass pumice, and then added pond soil into it. When the weight reached 500 grams, the height of the soil and pumice had reached 12 cm.

If you think about a height of 12 centimeters, you should be able to build a small ecosystem dominated by herbaceous plants.

"Suddenly I'm curious, how is Qingshi made?" Li Chengxin asked this question.

This is a long-arranged link to let netizens understand this new type of environmentally friendly material.

With this question raised, the live broadcast team set off to a glass pumice factory on the outskirts of the city.

Along the way, Li Chengxin also introduced various characteristics of glass pumice to netizens.

Including dense air bubbles and micropores inside pumice, which greatly reduces the weight of the product; it has certain mechanical strength, extrusion resistance, rolling resistance, and good dimensional stability; pure inorganic material, high-temperature roasting, sterile and insect-free, Non-toxic, harmless, non-radioactive; it has the functions of water retention, water storage, water filtration and fertilizer absorption, fertilizer preservation, and slow release of fertilizer effect; corrosion resistance, weather resistance, insolubility, non-degradation, long product life, etc.

Nowadays, the main application fields of glass pumice include roof greening, indoor gardening, soil improvement, rainwater collection, landscape river sewage treatment, aquaculture water treatment, permeable pavement, pipeline laying, vegetation concrete ecological slope protection, etc.

【Strange knowledge added.JPG】

[Suddenly want to build a flower bed on my balcony...]

[I probably know why my ceiling is always leaking. 】

When Li Chengxin and others got off the bus, they found that they were in the glass bottle mountain.

The staff of the glass pumice factory introduced to them: "These glass bottles are the raw materials of glass pumice."

After bringing a few people into the factory, they saw a forklift pouring glass bottles into the crusher. The gap in the crusher was very large, and the glass fragments that came out were actually quite large.

"Is such a large shard enough?" Li Chengxin asked curiously, "I thought it really needs to be smashed to glass shards before it can be used."

The crushed large pieces of glass are scooped up by the next forklift and poured into a long machine.

"This machine is the production line of glass pumice," the staff introduced. "First, the glass fragments are processed first, and they are crushed into smaller fragments with a pulverizer."

"Sure enough, it's still glass scum." Li Chengxin nodded.

But the next moment, Li Chengxin and others were taken to the opening of the next step of the production line.

"Wow!" Li Chengxin exclaimed in surprise, "This is not glass scum! Are you sure you didn't secretly replace the glass with flour?"

The camera lens penetrated into the opening, and saw that the previous glass shards had turned into white powder.

The staff took out a handful of glass powder with their hands wearing rubber gloves. Because it was in powder form, the glass powder was no longer transparent, but turned into very viscous fine particles.

"The next step is to add chemicals similar to bread yeast powder to these glass powders to make them swell. Of course, this additive is a company secret, so I won't introduce it." The staff laughed. When I entered the factory, I also felt that this was a very miraculous process.

Li Chengxin searched the Internet for nothing, and found that there was indeed no technical information related to glass expansion powder. It seemed that this seemed to be quite important business information, so he was very sensible and didn't ask further.

The glass powder mixed with glass expansion powder is flattened to a thickness of 1 cm in the next step of the production line, and is sent to the next process by the conveyor belt.

Through the entrance to the next process, Li Chengxin could see the orange flame inside the machine.

"Does this next step seem to be burning glass?" Li Chengxin confirmed.

"Yes," the accompanying staff continued to introduce, "The oven used to burn glass powder is 25 meters long. It is in the form of a conveyor belt. We can go to the exit and wait for it to go out."

Soon, Li Chengxin and everyone saw the burnt glass powder at the other end of the conveyor belt.

"It feels like baking bread!"

Before entering the conveyor belt, it was 1 cm thick powdered glass, which swelled to a 5 cm high block after it came out, and then fell to the ground due to the bottom of the conveyor belt, breaking into small pieces.

Li Chengxin stepped forward and picked up a palm-sized fragment, and weighed it.

"It's really light!"

Looking carefully, the fragments are full of fine pores.

"It feels like foam plastic, but it's harder."

Finally, pass these large pieces through a pulverizer, and the resulting product looks like the glass pumice that Li Chengxin is familiar with.

(End of this chapter)