Within a few days, the people of the whole city knew that this magical cement was made up by Weihaihou, who was rumored to be a loser, and the rumors came to an end. Pen? Interesting? Pavilion wWw. ｂiquge。 ｉｎfo

Tang Ming's cement factory started working day and night, and all the craftsmen worked in three shifts, but in this way, cement was still in short supply. As Tang Ming said before, Xiao Ding, this will really count the money and count until his hands cramp.

In just ten days, the empty vault was filled again, and Tinker smiled so much that he couldn't see his teeth. Chen Jialan saw that Ding Ding seemed to be very interested in counting money, so he simply delegated power to her and tried to concentrate on bringing up the children in his own leisure.

Tang Ming made a lot of money, but trouble also followed, his eyes were red, he had bad intentions, and he wanted to share some soup to drink. In short, there is an endless stream of ministers or princes and nobles who come to the door every day, now it's okay, Tang Ming doesn't have to do anything, he is busy dealing with these people all day long, and he can't cope with them.

At first, he politely refused politely, but as soon as these greedy guys saw Tang Ming talking, they began to inch in. In the end, Tang Ming, who was helpless, could only pretend to be sick and hide in Yao Guangxiao's Buddhist hall.

But he was not idle, and at the moment he was already working on how to apply cement to ships. Using cement to build ships is not an uncommon thing in later generations, but Tang Ming, who has black eyes, can only find the shipbuilders of Laibao Shipyard when he doesn't understand anything.

Lao Wang received a notice from Tang Ming early this morning, asking him to call all the best shipbuilders in the Bao Shipyard to Yao Guangxiao's Buddhist hall. Lao Wang was very happy, he knew that Tang Ming must have a good greeting.

Lao Wang, who came in a hurry, was disappointed in the end, because Tang Ming had just proposed to them an almost impossible task, to build a sea ship with cement.

Lao Wang has been studying with several shipbuilding masters for a long time, but they all think that this is a fantasy.

"Master Hou, you said that this uses cement to build ships, but how is this possible? The weight of the cement used to build a ship is that buoyancy alone cannot be passed. Maybe your boat is built, but it sinks when it is put on the water, and even if it doesn't sink, it can still float, and it is estimated that the load is limited. In addition, because the weight of the ship itself is too large, the speed of the ship will definitely be affected, so there is no need to build this cement ship no matter how you look at it. ”

After some discussion, Lao Wang summed up the opinions of all the craftsmen, and bowed his hand to Tang Ming, hoping that he could dispel this idea.

Tang Ming seemed to have been prepared for the problems that Lao Wang said, only to turn around and bring a basin made of iron from the house, put it in front of several craftsmen with a smile, and motioned for them to take it in their hands and weigh it.

After all the craftsmen weighed it, Tang Ming asked, "How is it?" Everyone thinks this iron basin is heavy enough! ”

Everyone didn't know what Tang Ming meant, but they still nodded honestly and replied, "It's really heavy." ”

Tang Ming didn't explain his doubts to everyone, but brought another wooden basin and let everyone weigh it again. Only then did he explain: "Is there more than twice the weight difference between this wooden basin and the iron basin?" ”

Seeing that everyone nodded, Tang Ming smiled again: "Very good, then we will go to the pool outside now, and I will demonstrate to you on the spot, the buoyancy and load of the iron basin and the wooden basin that are twice the weight difference." ”

Only then did everyone suddenly come over, and without saying a word, they followed Tang Ming to the pool outside the house. Tang Ming put the wooden basin on the water first, but the wooden basin only sank less than ten centimeters. Then the iron basin is put into the water, and the weight of the basin of the same size and proportion is also different due to the different materials, which will indeed sink two centimeters more than the wooden basin.

Tang Ming pointed to the two basins on the water and said with a smile: "Now everyone has seen it, although the difference in weight between the two basins of the same size is more than doubled, the iron basin only sinks less than two centimeters more than the wooden basin, according to this proportion, that is to say, in the case of double the difference in weight, the iron boat is just a little deeper than the wooden boat." ”

Several craftsmen seemed to wake up after watching Tang Ming's demonstration, but they didn't understand, and one of the older ones asked suspiciously: "But the problem is that Master Hou is going to build a cement ship instead of an iron ship, so there should be a big difference between this cement and iron!" ”

Tang Ming glanced at the old man appreciatively, smiled and nodded, and said, "The fact that the old man can see this problem shows that you really have experience in shipbuilding." There is indeed a big difference between this cement and iron, although the hardness of the cement boat is there, his flexibility is almost zero, which is also the biggest flaw among them. ”

Lao Wang also seemed to think of something, and said: "What does Master Hou mean is that after this cement ship is built, it is too hard to build a big ship, and can only build a small boat?" ”

Tang Ming's face was full of bitterness, and he shrugged his shoulders helplessly and said: "So other problems are not problems, and if you want to build a big ship with cement and build a big ship that can walk on the sea, you can only solve it by breaking through this hardness problem." That's why I'm calling you all here, because you have a lot more experience in shipbuilding than I do. I'm sure you'll be able to think of a solution. ”

The hardness of cement was indeed a headache for Tang Ming, and he only learned about this problem after several tests. At this time, he also understood why the cement ships of later generations saw small boats, the largest of which were only those boats used to carry sand and soil on the river, but he had never seen a cement ship that could travel on the sea.

The reason is not that the cement poured plank is too hard and brittle, and the cement will break once it is impacted, but the iron plate is different from the wooden plank, although the wooden board will also break, but the fiber of the tree is very tough, even if there is a loss, it will not implicate the entire hull, and the repair can be done completely easily as long as there is suitable wood.

But once the cement is damaged, it cannot be repaired in time, especially once the hull is broken, there is no good material to repair the broken place, it can be said that once the cement ship is broken a hole, the whole ship will become a scrap ship.

In order to explain the problems he is currently troubled by to several craftsmen and masters more intuitively, Tang Ming directly used a small cement boat to knock a hole in the bottom of the ship, pointed to the hole and said: "The biggest disadvantage of this cement ship is that once it is damaged, it cannot be repaired at all. ”

The more the craftsmen present understood the problem, the more embarrassed they felt, and there seemed to be no way to solve such a problem, and for a while several people frowned deeply and remained silent. (To be continued.) )