Suddenly, Li Meng was eager to flee.

But when I thought of the cement I was thinking about, I still suppressed my steps.

"Brother Qin, for me now, the one thing I want to ask you for advice is far more important than this hidden disease! So please understand! ”

Qin Fan completely thought that the other party was embarrassed to mention the matter between shares, so he nodded.

"Okay then! When I'm done answering my doubts, I'll discuss that matter with you! This surgery must be done today! ”

Li Mengwei met Qin Fan's eyes, and couldn't help but feel a chill behind him.

But thinking about his various thoughts and attempts on cement, his eyes were a little firmer.

Today, I was stabbed in the ass, and I had to figure out this material!

"Brother Qin, I'm asking you about cement today!"

Qin Fan nodded: "Say it!" ”

"As far as I know, in addition to using cement as a binder between bricks and bricks, your buildings in Wannian County also have a purpose of mixing stones to pour roads, right?"

Qin Fan nodded: "Mirage is too expensive, and it's not easy to use." The direct mixing effect of sand and gravel cement is not good. Glutinous rice mortar is even more unaffordable, so cement has become the best choice! ”

Li Mengwei nodded: "Chang Meng wants to know, what is the purpose of adding stones to this cement?" ”

Qin Fan opened his mouth and said: "One is the strength of Zeng Jiang, and the other is cost saving. ”

Hearing this, Li Mengwei's eyes lit up a little.

My guess is really good!

This stone is really used to increase the strength of cement.

It's just that he really didn't expect this cost savings.

"Would it be more appropriate to replace the stone with iron?" Li Meng tried to ask.

Qin Fan couldn't help but give a thumbs up.

Boy! Reinforced concrete has all come up with you!

This carpenter is not simple!

Chang Meng's ability to draw inferences is commendable, but there are some mistakes and omissions.

No, the eldest grandson Wuji said directly:

"Chang Meng, this has all been said, putting stones is to save costs."

"If you put iron on it, wouldn't it be more expensive?"

Chang Meng shook his head: "I just want to further improve the strength of cement, as for the cost, it is secondary." ”

Qin Fan nodded and said:

"Brother Chang's thinking is not wrong, but there are still some problems in the details."

Li Mengwei immediately hugged his fists and said: "I want to hear about it." ”

Qin Fan did not hesitate, and said directly:

"First of all, it's true that iron does increase its strength."

"It's just that ordinary iron is easy to rust, and if it is rusty and rotten, the strength will be reduced."

"Second, if it's for strength, it's better to rush on the steel bar. The strength of reinforced concrete far exceeds the former. ”

"Rebar?" Li Mengwei looked confused.

"Tempered into steel! Steel is a harder metal material obtained by quenching iron many times at high temperatures. ”

"And the rebar ......"

Qin Fan picked a thin vine in the courtyard on the side and took out another chopstick.

Wrap the chopsticks around the rattan and spiral up.

"Steel is made from steel that is made of this."

Hearing this, Li Shimin was a little confused: "Why do you want to cast it into this shape?" Wouldn't it be more labor-saving to make it directly into a cylinder? ”

Li Mengwei guessed: "Is it to be able to stick with cement?" ”

Qin Fan nodded: "Not bad!" If it is as the shape that Boss Li said, the surface of the steel bar is too smooth, and it is easy to get out of the cement, so it is not good! ”

Li Mengwei nodded and said, "I've been taught." Initial update @ "

But the rupture no longer mentions steel and reinforced concrete.

With his previous idea, it was added with iron blocks.

With Datang's financial resources, it can pave a section of such a road.

But if it is replaced with steel bar, it is completely unrealistic.

On the one hand, steel used for reinforcing is extremely scarce.

Hundreds of steel, how much blacksmith sweat is needed to make a piece of steel. (This chapter is not finished!) )

Chapter 124: Your Majesty Help!

How much charcoal is going to be used!

If the steel in Qin Fan's mouth is really made, then it is the right way to use it to make weapons and shields.

For the construction of a house?

That's too extravagant, isn't it?

Second, the shape of the steel bar depicted by Qin Fan is really difficult to realize.

Just creating the rebar is extremely laborious.

At the same time, it is necessary to make such a shape on it?

I'm afraid that I can't do it even if I'm tired to death!

Qin Fan also saw the regret in the other party's eyes.

So he said, "If you want to make reinforced concrete, you must first open a steelmaking plant." ”

"The use of steel in construction can only become a reality if steel production is increased."

"Otherwise, I'm afraid it won't be enough for war, let alone for construction."

Li Mengwei nodded, and no longer asked what a "steel mill" was, after all, he knew that no matter what, it was still far from this goal.

Rather than looking at these unreachable things, we should focus on the present.

So, he asked Qin Fan a lot of knowledge about the various uses and expansion of cement.

While Qin Fan was answering, he also had a deeper understanding of Chang Meng.

The other party doesn't seem to be like what Boss Li said, he is an ordinary carpenter!

Although Chang Meng doesn't know anything about medical knowledge, when it comes to cement and other processes, the other party understands it at all, and can even draw inferences!

And Li Mengwei's knowledge and practical experience far exceed that of most craftsmen of this era.

However, since Boss Li said that the other party was a carpenter, Qin Fan would not forcibly expose it.

After all, everyone has a secret, and the other party comes to exchange cement-related information, just to make this material shine in Datang.

This is a good thing, Qin Fan naturally will not stop it.

After a while, Li Meng nodded unsatisfied.

Sure enough, communicating with a peerless craftsman like Qin Fan can allow him to grow extremely quickly!

That's right, after some exchanges, Qin Fan has become a craftsman in the eyes of this Ministry of Works!

At this time, Qin Fan smiled and said, "There is no doubt!" ”

Li Mengwei also nodded with satisfaction: "No doubts!" Thank you, Brother Qin, for helping me out. ”

Qin Fan waved his hand and said, "Since there are no doubts about cement, we might as well discuss the problem of Na Ra Dao first!" ”

Hearing this, Li Mengwei suddenly showed a look of embarrassment.

It's over, I was so invested in discussing cement just now that I forgot about it.

Li Mengwei was so anxious that he was sweating profusely and looked around left and right.

But for a while, I couldn't find any excuse to excuse this matter.

So, he could only focus on Li Shimin.

Dear Your Majesty! Wechen is doing his best for you, you must pull Chen!

Li Shimin saw the pleading eyes of the Ministry of Works, and he also understood.

So he said to Qin Fan:

"Brother Qin, I also have something to ask you. Error-free update @".

Chapter 124: Your Majesty Help!