The Rise of the European Emperor

Fortunately, Marin discovered this problem early, before Beihai State started laying cement slab roads on a large scale. So, everything is in time.

In fact, these days, because there are no heavy vehicles, the requirements for roads are actually very low. Under normal circumstances, even if no "bones" are added, the cement slab road is difficult to be crushed.

However, in this era without heavy vehicles, the real enemy of cement slabs is probably not the pressure of the vehicle, but the thermal expansion and contraction of the internal structure or huge vibrations. Because, this will generate internal stress and shear force, which will cause cracks in the cement board.

In winter, the cement expands with heat and contracts with cold, and the shrinkage force is generated inside, which is the most prone to cracks. And once a crack is formed, if a heavier cart rolls over, it may cause the crack to expand. Then, until the cement board is completely broken...

In other words, the main purpose of adding fiber "bones" is not to fear that the cement board is not strong enough, but to fear that the cement board will crack by itself. Of course, after adding "bones and tendons", the strength of the cement board has also been greatly enhanced, and the performance is better.

The enhanced strength of grass-reinforced concrete is very limited, but it can help the cement board resist cracking, but there is no doubt about it. This is especially important in winter, which can greatly improve the service life of the cement board and save costs. If you don't use cement boards for decades, as long as you don't need to replace them for several years, Marin has achieved his goal. Moreover, cement slab roads are easier to repair, just replace one.

In this way, Marin set the rules - the main roads use 53mm thick asbestos fiber cement boards of ordinary thickness, while ordinary roads and inner city streets generally use 26mm thick straw-reinforced concrete cement with reduced thickness. plate.

After all, asbestos fiber is very stable in chemical properties, not easy to be corroded, and will not deteriorate. Although the cost of cement slabs used to make main roads is higher than that of grass-reinforced concrete, there are not many main roads, so the amount used is limited. As for grass-reinforced concrete slabs, because the thatch is worthless, it is easy to collect and the cost is relatively low. Moreover, after the thickness is halved, the manufacturing cost is further reduced, which is very conducive to the comprehensive promotion in China.

Subsequently, the newly built cement board factory in Beihai State started the production of two specifications of cement boards. The two kinds of cement boards produced by it are given priority to supply road construction in Beihai. But England will also build roads. For example, the two major fiefdoms of Northumberland and the Isle of Wight definitely need road construction. As for the border counties in southern Scotland and the highland counties in the north, Marin was in no rush to build roads there. Because most of them are mountainous areas, it is very difficult to build roads. Moreover, mudslides are prone to break out in mountainous areas, and it is easy to damage cement slab roads.

In Wicklow County, Ireland, where Adler is located, Marin gave priority to providing a batch of cement slabs to support the construction of two main roads for military use.

Although County Wicklow is on the east coast of Ireland, there is relatively little rain, but compared with the North Sea Country, there is still a lot of rain. Therefore, in County Wicklow, concrete slab roads that are not afraid of rainy days are more needed.

In other words, the entire island of Ireland needs this kind of road. It's just that Marin's current production cannot increase, so he can only supply Adler's Wicklow County first. Moreover, it can only supply the amount of one or two roads.

In addition, Marin has to supply the needs of New York. Others can wait first, a concrete road leading to the Great Lakes cannot be escaped. Because Marin is now counting on finding the location of the world's first modern oil well, the Drake Well in Titusville. As for Titusville, it seems to be near Lake Erie, and there are oil seedlings on the surface.

Marin plans to start building the cement slab road from Philadelphia to the west now, without rushing, as long as it starts to be repaired. Anyway, with hollow steel drum rollers and cement slabs, the speed of road construction is so fast. The only trouble may be that you will be attacked along the way. After all, the Indians are not fools. They must understand that they will encounter trouble after the road is repaired, and they will definitely block it.

However, Marin is not afraid of getting hundreds of thousands of labor from Haiti now. At that time, he plans to mobilize tens of thousands of Taino labors from Haiti Island to build this road. Cut trees first, build roads later. After determining the direction of road construction, cut down all the trees along the way first, and then start laying foundations for road construction.

The standard for tree cutting is that all trees within a distance of 30 to 40 meters on both sides of the road are cut down. Native Indians' earthen bows made of rattan strings are not very powerful, with a range of only thirty or forty meters. Opening up this distance just prevented them from putting cold arrows in the woods from affecting the construction.

And if they dare to come out of the woods, they will just taste the strength of the guards...

...

Once the stone road is repaired, Marin will build a station every 20 kilometers. The post station can not only keep horses for the transfer of messengers, but also build city walls and have military defense capabilities.

This is only the first step, and then, Marin will send farmers to various post stations. Then, starting from the post station, attacking both sides of the road, cutting down trees, reclaiming farmland... Finally, based on the post station, an armed village with walls is formed...

If there is a fierce rebound from the Indians, send a large force along the stone road to clear the Indians around the station. Now, the colonial army in North America already has rich experience in jungle warfare. It may not be possible to conquer the entire east coast of North America, but it is more than enough to attack a small tribe alone.

Moreover, in the future, Marin will continue to select soldiers from German immigrants, form an army of 10,000 people in the North American colonies, learn jungle warfare skills from the more than 2,000 colonial veterans, and eventually further sweep the Indians in the jungle to capture more land.

The principle of road construction on cement slab roads is not to seek the shortest distance in a straight line. Except for the cobblestone road that is eager to go to Lake Erie to find Testerville, the other concrete slab roads will extend along the Great River Plain as much as possible. Its purpose is to occupy as many good lands as possible. After all, the plains beside the big river must be fertile soil, the most fertile.

Just like what the great powers did in China at the end of the 19th century, wherever the railway goes, it is the sphere of influence. In the same way, wherever the cement slab road goes, it is also the sphere of influence of the North Sea country. Even, it goes further than the sphere of influence. Because Marin will directly send troops to control there, and even directly develop and utilize it.

...

After sorting out his thoughts, Marin quickly issued a series of orders, specifically arranging road construction and development matters in the North Sea State, Britain's own territories, and the American colonies.

But just when he was tired of writing and wanted to move his wrist, Kohler suddenly hurried over and reported:

"Your Majesty, His Majesty Edward was assassinated!"

...