Chapter 907: You Zhi Returns
The cross-sea bridge is still in the initial stage of construction. The prisoners piled bags of sand and gravel on the reef, surrounded the places where the wells were to be drilled and the bridge piers were installed, and formed rectangular basins in the sea water, separating the places where the construction was to be done from the sea water. The piled sandbags were more than five meters higher than the highest tide level. Even if the high tide came in the middle of each month, these artificial basins would not be submerged.
Originally, it should be carried out at the beginning and end of each month when the sea water receded and the hidden bridge appeared from the water. However, the surface of the hidden bridge was uneven, and cattle and horses had to be very careful to carry it, let alone pull carts.
Besides, even if the surface of the hidden bridge could run a four-wheeled carriage, its carrying capacity could not be compared with that of a ship. Moreover, the time when the hidden bridge appeared from the water was less than two days and nights each month, which left them with insufficient working time, so it was better to use ships to transport sandbags.
They started from the north bank of the cross-sea bridge. Now, in just over ten days, they have built nearly twenty basins. Now the work of damming is going on in an orderly manner. They just need to wait for Luo Chong to deliver the steel bars and cement, and then they can start pouring the bridge piers.
At the same time, in Yashan County, Qiongzhou Island, another project was also being built simultaneously. That was the Shuguang Lighthouse that the Han tribe had planned to build here. It was a lighthouse located in the reef area in the northeast corner of Qiongzhou Island and stood on a large reef.
This is the only way from the estuary of Liuyang River in Takuhai County to the estuary of Qingshui River in Qiongzhou Island. It is an important waterway for the Han tribe. In addition, there are indeed many reefs in this northeast corner. If unfamiliar ships that are not very familiar with the nearby waters enter, they are very likely to hit the reefs and sink. In addition, the Han tribe will expand the development of marine fisheries here, and fishermen will definitely sail at night. It will become a daily routine, so it is necessary to build a lighthouse here.
However, unlike the cross-sea bridge project, the Shuguang Lighthouse is at most a small building, so the scale of the construction team is not large, with only dozens of people, not slaves.
The bricks and stones for the construction of the Shuguang Lighthouse were prepared last year before Zhudao was conquered. The delegation led by Shouya collected rocks and carved them into bricks in Yashan County. There was definitely more than enough for the construction of the lighthouse, and it was estimated that they would not be used up.
After the construction team of dozens of people built the Shuguang Lighthouse, they had to go to the port of Takuhai County to build another Yaoguang Lighthouse, temporarily lighting up the two seaports of the Han tribe, providing guidance and direction identification standards for passing ships. At the beginning of
March in the first year of Da Ming, the Han tribe was building cross-sea bridges, lighthouses, strategic reserve granaries in various places, and the people worked hard to farm, a scene of prosperity.
On the fifth day of March, Luo Chong was still in the research institute of Xingang County to guide them to do cement solidification test experiments. As a result, the guards came to report that You Zhi had returned and had arrived in Dongxin County. In another day, he would arrive at the dock of Liuyang County. The guards came to ask Luo Chong where he was summoned.
Luo Chong thought about it. He was going to recall You Zhi and let him be in charge of the construction of the imperial palace in the capital. So he decided to arrange a meeting in Liuyang County. It happened that the palace model he had made was also
in Liuyang County. He could introduce the relevant matters to him at that time. So Luo Chong said to the guards around him, "Go and tell You Zhi to wait in Liuyang County first, and then arrange my itinerary. We will also set off for Liuyang County today and go directly to Sitong County. It will be faster."
"Yes!" The guards agreed and went out to prepare. Luo Chong then explained to them in the research institute.
"The composition of this cement is not fixed. We need to experiment with several sets of formulas, especially the ratio of calcined clinker and gypsum. For clinker, we need to consider the changes in properties brought about by the addition of iron powder and clay. Will adding more iron powder and clay make the hardness, compression resistance and impact resistance of concrete higher?
There is also the ratio of clinker to gypsum. Gypsum is mainly responsible for the task of rapid solidification in cement. How much gypsum should be adjusted to make quick-drying cement? You need to experiment with all these.
Another thing is the ratio of concrete. Mix it according to the ratio of 40% crushed stone, 20% coarse sand, and 10% cement. Then use wood to build a template and pour concrete into it to test the drying speed, compression resistance and impact resistance of each cubic meter of concrete. Wait, you guys can test these slowly.
I'm not in a hurry how fast you can make it, but the quality must be guaranteed. I don't want the project that I have finally built to collapse in the future. You don't want to see the train you built finally fall into the sea because of the quality problem of the bridge, right?
Well, I have to do some other things, you guys work hard. "
After explaining the key issues of cement research and development to the researchers, Luo Chong and his guards set off for Liuyang County. Because he was not in a hurry, Luo Chong stayed in Sitong County for one night and took a look at the various constructions in Sitong County. The scale of this county is still limited. Because the county is on a hillside and the cultivated area is relatively small, the agricultural development of this county is not very good.
Luo Chong saw all this and thought in his heart that if the eight counties of Hanyang continued to expand in the future, it would definitely have to develop in the three counties of Liuyang County to Nanzhang County and Ruyang County. There is sufficient fresh water and a large plain area, which is very suitable for growing food. As long as there is food, you can survive. For this era, these are enough.
The next morning, Luo Chong led his guards to continue on his way to Liuyang County, and finally arrived at the government office of Liuyang County before noon. At this time, You Zhi had not arrived yet. According to the message he replied yesterday, You Zhi would arrive in Liuyang County before dinner that day at the earliest.
And You Fu, who received Luo Chong's recall order at the same time, would take more than ten days, because You Zhi had been active in the three counties of Honghu before, while You Fu was active in Tuohai County, which was a little farther away from You Zhi to Liuyang County. Fortunately, Luo Chong did not need the help of these two people urgently, so he was not in a hurry.
Luo Chong first went to see the craftsmen who were making palace models in the government office of Liuyang County, checked their progress, and then asked people to prepare a sumptuous dinner, ready to wait for You Zhi to come back and eat with these craftsmen, so that they could introduce each other at that time. Anyway, You Zhi would definitely take these craftsmen with him when he went to supervise the construction of the imperial city.
They waited until about four o'clock in the afternoon, when You Zhi's sailboat finally arrived at the dock of Liuyang County. Luo Chong had arranged for his personal guards to meet him at the dock, and they immediately brought the boy to Luo Chong.
(End of this chapter)
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