The newly built road leads from Chang'an to Jingyang County.

As the first county town connecting the northern region, the road is naturally close to the water.

After waiting for several years, Jingyang finally waited for a cement road that belonged to them.

The pavement of the cement road is not very smooth, and the pavement of manual treatment cannot be as smooth and smooth as the roller, and the cement road itself has no elasticity, which is a hard pavement, so it is not suitable for the roller to press.

But even so, the so-called unevenness is actually just a little unevenness, and in comparison, it is still relatively neat.

Thick straw is worn into mats and then spread on the freshly repaired pavement to avoid sun exposure, which can form cracks in the ground, and in addition, the water in the cement road cannot be lost too quickly, so it is necessary to constantly sprinkle water on it.

The sprinkling is to first more and then less, gradually reduce, let it dry as slowly as possible, so that the road surface will be harder and more durable.

Although there are only two rollers, the pace of road construction is not slow.

In the later process, some fine-tuning was made to the construction steps, which made it possible to repair a three-mile-long road surface within seven days, saving a full day of time than before, and the quality of the process was not reduced in the slightest.

According to the current progress, it will take less than two months to repair this road, and with some later processing, it will take a total of three months to completely repair this road.

The newly built road takes into account the problem of drainage, and when Changluo official road encounters heavy rain, the road surface is still prone to water accumulation, and even the water in the ground on both sides will pour into the road surface, although it does not affect the traffic, but the long-term soaking is also a kind of damage to the road surface after all.

So this time they took the foundation to elevate, and they didn't need to raise much, the height of about 30 centimeters was enough, so that the cement layer with a thickness of about 5 centimeters was enough to use in the current environment.

During this period, the officials of the Ministry of Industry continued to come to inspect the progress of the construction, and at the same time, there were many other technical personnel who came to study and inspect the test section, and it was also a requirement for their future, and no one dared to have any sloppiness.

And it was only at this time that Xu Hai was a little reluctant to come late.

As one of the researchers of these equipment, the purpose of this road construction is not to let the Ministry of Engineering gain experience or shock them, but also to test the reliability of these equipment.

At the same time, it is necessary to improve the next model according to the user's personal feelings, so that the best effect can be achieved.

But at this time, Xu Hai was busy with putting, and that problem had been bothering him for a long time, but until now, he had not been able to find a suitable way to solve it.

If this problem cannot be solved, it means that whether it is agriculture or construction, every time it is used, a large number of personnel must cooperate, and it is difficult to do it by the driver alone.

On the one hand, the research is in a predicament, and on the other hand, they still have to investigate the use of these devices, although Xu Hai knows very well that these things must also be investigated and listened to by them in person before they can make better improvements.

But he was a little dissatisfied that the above had to let a person in charge come with him.

If you let Xu Hai make a decision, send a few apprentices here to record it, and go back and tell it.

After all, the apprentice has been with him for a short time, and they still have no problem how to describe those problems.

It stands to reason that I should be happy that the equipment I participated in the research has built such a high-quality cement road so quickly, but as an old pedant and a scientific researcher who likes to study, it is obviously not worth wasting time to see this.

There is a problem with the equipment, in less than a month, what can be seen?

Don't you see that the equipment is still functioning normally? Regarding the problem of the putter, everyone knows that this is a problem, and no one can solve it, what can be done?

turned around and listened to the opinions, and the result was really not much different from what Xu Hai thought in his heart.

The biggest problem is the problem of the pusher, which is not easy to control, which is the biggest problem.

The other is to hope that the weight of the roller can be increased a little more, so that the number of rolling can be reduced as much as possible, so as to achieve the purpose of construction work in more places in the same time, so as to improve the speed of construction.

These are all minor problems, and the weight of the home is not easy to say? A little increase in the diameter of the rollers would have been sufficient, and the power of the steam engine or something would have been sufficient, and this thing didn't need to run too fast.

"The problem of the push rod can't be solved for the time being, this can't be helped, the problem of the road roller, these two are like this, the next one will increase the weight of two thousand catties, and if it is more, it is estimated that you will not be able to cross the bridge, if you feel that the weight of these two is not enough, you can use a bag to fill some soil, and put it on the body to increase the weight in the place that is not in the way." Xu Hai said to Chen Shuda with a dark face.

One is the person in charge of the train group, and the other is the secretary of the Ministry of Industry, and the difference between the two is too far and too far in terms of official rank.

However, Xu Hai still dared not to give Chen Shuda face.

Although the two levels are different, their status is not much different, and the Ministry of Industry can't control the Academy of Sciences, and the entire imperial court, except for the emperor, no one can control the Academy of Sciences.

It is said that there are various departments in the imperial court, then the Academy of Sciences can also be regarded as an independent imperial court, and from another aspect, the level of the Academy of Sciences is basically the same as that of the entire imperial court, which is equivalent to the four provinces.

Well, that's just a theoretical statement, in fact, the Academy of Sciences still follows a normal official system, but it is managed independently, and the imperial court does not interfere.

"In addition, if you have any other questions in the future, just let someone go to the test site and say it, if it doesn't work, let someone know, and I will send someone."

"Hehe......" Chen Shuda smiled, he could be regarded as having experienced the temper of the old stubborn donkey of the Academy of Sciences, it was really difficult to get along with.

These people don't seem to have anything to do with them other than research.

And Xu Hai is a person, Chen Shuda really doesn't dare to turn his face with him, because this person's status in Datang is also very unusual.

Xu Haike is known as the father of the Datang steam engine, and how many changes the steam engine has brought to Datang now, not to mention the current kind of reasonable and well-founded words to anger you, that is, to scold you unreasonably, you have to be leisurely at this time.

Besides, it can't be ......