Since the stone wall was built, Pan Jitao has not left an inch, circling around the wall.

Even for lunch, I squatted on the edge of the river with a bowl and solved it against the wall.

This is not an exaggeration, because he is really using this wall as a dish. Every time you have a cup of tea, you have to deduct some mortar to taste it.

When Zhao Hao came to see him after eating, several holes the size of wine cups had been dug in the wall, and he didn't know how to digest it.

"Zhongcheng, have you tasted the change?" Zhao Gongzi walked to Pan Jitao's side, and Gao Wu immediately gave him a chair. Zhao Hao Shi Ran sat down and asked Brother Gao to also move Mr. Pan.

"The old man is used to squatting and eating." Pan Jitao thanked him, and then replied seriously: "It's been an hour since it was built, and the mortar has begun to harden, and it can't be deformed by pinching it by hand. But the taste is even better......"

Zhao Hao smiled bitterly when he heard this, what the hell is the taste?

"This Rausch concrete, at this time, is completely different from Sanhe soil and glutinous rice mortar." I saw Pan Jitao say solemnly: "Let's see what happens next." ”

"Hmm." Zhao Hao nodded, watching Pan Jitao staring intently at the wall, just like an old farmer staring at his crops.

It's hard to imagine that this is a third-grade master from a Jinshi.

Zhao Gongzi felt that he was the most unofficial Daming official he had ever seen, even less like Hai Rui.

couldn't help but sigh softly: "There are too few officials like Zhongcheng who love water control. ”

"You love water control, your whole family loves water control!" Who knew that Pan Jitao rolled his eyes and said in annoyance:

"The old man hates this job, and every time he goes up the embankment, he is irritable. You said that I was a scholarly scholar with two rankings, why did I soak in mud soup all day long and become mud legs! ”

As he spoke, he pointed to his old face and said: "The old man was also a fine skin and tender meat back then, known as the 'jade-faced little white dragon', you see that after working as a river worker for a few years, he directly became a 'half-cut jujube bark', which is older than those who are assigned to fill the army." ”

"Actually, I used to be a very elegant scholar, and when I was a local official, I also got another nickname called 'Pan Bodhisattva', how good do you think that temper is? It only became like this after going up the embankment, and all day long in front of a bunch of stupid and lazy officials, slippery officials, and ignorant people, can you not get angry every day? ”

"Uh-huh." Zhao Hao didn't expect that Pan Jitao, the first able minister in the Ming Dynasty to control water and tame the Yellow River, would have such a big complaint about his life's work.

"Then why is Zhongcheng so concerned about this cement?"

"Is this hard to understand? The old man wanted to hurry up and complete his mission and clean up the damn Yellow River. With this thing, I was able to get rid of the fate of mud legs as soon as possible and put back on my boots! Pan Jitao said with a look of an idiot: "The premise is that you didn't deceive the old man." ”

"Why, the walls are all here, you can just taste it slowly." Zhao Hao shook his head and smiled, and couldn't help asking: "Since you don't like it so much, just find a way to transfer." It's really not good, just resign and go home and travel under the forest. ”

Pan Jianai is a huge rich man in Wucheng County, 'the world name Ding family', and his grandfather is one of the nine elders of Hongzhi, the late prince Taibao, and the criminal department Shangshu Min Qi. Several of his brothers are also officials, so naturally there is no need to rely on him to shine on the lintel and protect the whole family. It is completely possible to learn from Tao Yuanming to hang the crown and go away, and see Nanshan leisurely.

"Hey." Faced with this soul torture, Pan Jitao only sighed and said, "Someone has to rule the Yellow River, right?" The Wusong River flooded, and more than 100,000 people in Kunshan County were affected. The Yellow River floods every year, but more than 100 counties and tens of millions of people are affected. ”

"What can someone else do?" Zhao Hao said quietly: "Without you Pan butcher, can't you eat pigs with hair?" ”

"Don't be unconvinced." But I heard Pan Ji taming the stinky fart and said: "That's the Yellow River, how many dynasties and dynasties can have fun?" If even the old man can't be cured, others will have no hope! ”

"Uh, okay." Zhao Hao can't refute it, who made the family Pan Jitao.

However, an official with a strong sense of responsibility and perverted like Lao Pan'er is still very respectable, and it is even rarer in the Ming Dynasty.

In awe, Zhao Hao didn't hide it anymore, and explained to him the condensation process of concrete.

Zhao Hao told him that half an hour after adding water to mix, the gel in the cement began to condense, and this process was called 'initial setting'.

The formation of cement gel in six hours is roughly final, which is called 'final setting'.

However, the cement gel formed at this time is still in a soft plastic state, and it will take a few hours before it can gradually harden and become a solid state.

The hardening process is also the process by which the cement develops strength. In this process, it is usually necessary to carry out sprinkling curing, so as to continuously improve the strength of the concrete.

The maintenance time is inversely proportional to temperature and humidity, like in the rainy season in Jiangnan, symbolic maintenance for a few days is about the same. However, in the north, it is necessary to cover the straw mat seriously and sprinkle water regularly for a month to achieve the best effect of the concrete.

Pan Jitao listened very carefully, for fear that he would forget, he took out a small notebook and wrote it down.

Then he really stayed by the rubble concrete wall for a night......

~~

Before dark, he found that the stone wall had completely solidified, and he could no longer pick it with his hand.

The next morning, the mortar became very hard.

And there is white alkali on the surface, paste it and lick it, taste it and close your eyes, it feels a little bitter and then the aftertaste becomes astringent, and it is so happy that it seems to travel around the world.

In the morning, Yu Ben really brought someone over and sprinkled water on the wall.

Pan Jitao found that the mortar soaked in water did not become damp and soft like Sanhe soil, but was still hard and toothy.

This shows that cement is not afraid of water, and likes water, it is simply a treasure born to repair the river!

He can't wait to build a real dam with this thing!

He rushed back to Nanshan Temple, and pulled Zhao Hao, who had spent the night here last night, to his room.

Pan Jitao showed the graphic design drawings that had been drawn a long time ago to Zhao Hao.

"At present, the most feasible construction method is to build a remote embankment to prevent collapse in addition to the existing earthen embankment. Between the remote embankment and the earthen embankment, a lattice embankment is built every other mile. If such a levee bursts, the flood will be held back by the lattice embankment, so that it will not overflow and encroach on the remote embankment elsewhere. ”

"For the sake of insurance, we should also build a moon embankment and a cross embankment at critical places, so that we can protect it layer by layer and feel at ease." Then he said cautiously: "Although the earthen embankment has been replaced with a stone embankment, it is better to repair it if the materials are guaranteed." ”

"How to fix it, it's all up to Zhongcheng, you don't have to discuss it with me, I don't understand." Zhao Hao waved his hand and laughed loudly: "Just tell me, how much work and how much material is needed, right?" ”

"Hey, why don't you ask how much it costs?" Pan Jitao asked strangely.

Zhao Hao smiled but did not answer.

Pan Zhongcheng understood, the problem that can be solved with silver, Zhao Gongzi is too lazy to worry about it.

P.S. I'm sorry everyone, but I did a day of outline today and my brain hurts, and my writing feels like eating cement, so I can write as much as I want, and I'll work again tomorrow.