When Yang Jie looked at this thing, he knew that this was because there were bubbles in the cement. There were bubbles when filling the cement. After the cement was dry, the bubbles would form a gap inside the cement plate.

This is also the reason why many buildings leak when it rains. Because the technology is not in place during construction, the bubbles in the cement slurry are not cleaned up. Once it rains, the rainwater will follow the small bubbles into the room.

If there are bubbles on the column or beam, this may cause serious safety accidents.

"This looks like it should be a bubble..." Yang Jie said.

"Bubble?" Sun Yuanhua asked in confusion. He could understand why the column was not strong, but he didn't understand why it was a bubble. This was the first time he used steel and cement to make the column.

"Yes, it should be bubbles. Look at the Qing family, the inner wall of the sunken place is relatively smooth. It should be that the bubbles were not cleaned up during the infusion. After the cement was dried, many hollow places were formed, resulting in the column being unsolid..." Yang Jie said.

"This..., thank Your Majesty for your advice..." Sun Yuanhua said. He was also curious about the emperor knowing so much.

"...The next time you pour, stir more mortar and clean the bubbles inside. I think there should be no such holes in the column..." Yang Jing concluded.

"I have written down..." Although Sun Yuanhua was curious about how the emperor knew, he could only be curious and dare not ask more questions.

Yang Jie looked at these cement pillars that were broken by Sun Yuanhua and also easily smashed a few stones with a hammer. He was quite satisfied with the hardness of several pieces of concrete, and did not look like something made of inferior cement.

"By the way, the Qing family has tried the forging of steel bars? Can it work?" Yang Jie asked again when he remembered something.

"Report to your Majesty, I have tried it with a blowtorch. I can indeed burn the steel red. After hammering, I can indeed forge it together. However, I still tried it on a flat place. I have never tried whether the vertical steel bars can be forged or connected. If it can, then the forging after the steel bars are on the monument can be possible... I think that since it can be done in a flat place, it will definitely be possible in a vertical position, which is just a bit troublesome when forging. Also, using a blowtorch is extremely expensive... I suggest that some firmware should be used to fix the steel bars, and you cannot rely on forging or, otherwise, the cost is too expensive..." Sun Yuanhua said.

"Oh, is it? It doesn't matter if you can use the most expensive ones. If you can use the firmware, it's OK. In short, you have to be firm,... By the way, can you show me how to connect? I have to witness it with my own eyes..." Yang Jingjie said again. Yang Jingjie was not very relieved, so he was still ready to take a look.

"Yes, Your Majesty, I will receive the order!" Sun Yuanhua agreed. Then he ordered the craftsmen to start to take action.

Wang Chengen immediately led the emperor to a safe position. It was both hot, steel, and stone. It was really messy. Wang Chengen was afraid that the emperor would have any accidents.

The craftsmen were ready soon, the anvils were ready-made and the steel bars were ready-made.

One on one side of the two blowtorches, and began to aim the flame at the places where the two steel bars needed to be forged.

The huh huh flame quickly burned the two steel bars to be forged and connected red.

After a while, the craftsmen began to hammer.

After a while of knocking, these two pieces of steel bars seemed to be hammered into one place...

Let’s talk about it, the otakus is not a professional metallurgical forging. It is just judged based on the data. The temperature of the blowtorch is around 1,000 degrees, and the forging temperature of the steel is above ** Baidu, so in theory it should be forging. If it is written incorrectly, everyone is welcome to correct it.

……
Chapter completed!