When Zhong Shuyu decided to make cement and soap after comprehensive consideration in all aspects, it was already the afternoon of the seventh day after she went to work.

Today is half a day, and tomorrow will be her first day off after work.

Nowadays, the rest system of civil servants in the imperial court is one day off for seven days, which means that they can rest for three or four days a month.

Then add in other holidays, and there are about 50 days of holidays at most in a year. wa✫p.✻f✮engshuge.❃inf❋o

Such a vacation is naturally not as good as the previous dynasty and the Tang Dynasty.

For example, the Tang Dynasty gave officials long vacations at every turn, New Year's Day, Mid-Autumn Festival, summer solstice, winter solstice, and Qingming Festival, and they could take paid vacation for 100 days a year.

Such a variety of holidays gave the officials more time to express their affection for nature, drink and sing harmony in the landscape and countryside, and chant poems.

These circumstances also caused the poetry culture of the Tang Dynasty to be the most prosperous.

But today's Yan Dynasty, the new dynasty was established for decades, it is the time when everything is in ruins, so naturally so many holidays can not be given, there have been officials who have protested, but the protests are ineffective, and they have been beaten up, and now the officials are at most complaining and complaining in private.

For Zhong Shuyu, as long as it is not open all year round, there is no big problem.

Just like now, although he will be resting tomorrow, Zhong Shuyu is not idle.

After making sure she was going to make cement first.

She first wrote down the formula in the booklet, calcium carbonate is calcined at high temperature to produce calcium oxide and carbon dioxide, and the chemical equation of the reaction is Ca3 high temperature Cao + 2.

In short, cement is a mixture of limestone and clay as the main raw materials, which is crushed, batched, and ground to make raw meal, and then put into a kiln to be calcined at high temperature.

Then a certain proportion of retarder gypsum is mixed into the clinker, and the active material is grinded.

In the end, the resulting fine powder is cement.

After the formula is written.

Zhong Shuyu found Lord Wang and submitted an application to purchase relevant materials, this is the process of the imperial court, no matter what you do, you must apply for money and materials, and after the application is approved, it will be handed to the household department before the appropriation will be granted.

Wang Yuankui saw that on the application paperwork, Zhong Shuliyu applied to buy limestone raw materials, gypsum and clay, which are stronger than lime mortar and glutinous rice lime slurry, and the corners of his mouth twitched slightly.

The first thing I did when I came to the Invention Institute was to do this?

Engaging in new adhesives?

In the past few days, he has heard from the people below him that Zhong Shuyu has always been commuting to and from work on time, coming the earliest and getting off work the latest every day, which can be said to be extremely self-disciplined, and he is not affected by others at all.

It looks like how much you have to achieve.

As a result, on the seventh day, such a speechless application was handed over.

Wang Yuankui raised his head and looked at the handsome young man in front of him and said, "You want to make a new adhesive that is better than glutinous rice lime paste?" ”

Zhong Shuyu replied with a calm face, "Yes." ”

Wang Yuankui looked at him and said, "It's a good thing that you have this idea, but the official has to say that the glutinous rice lime paste on the market is good enough, and there is no need to make a better new adhesive." ”

"So, you're really embarrassed to apply for materials to make a better new adhesive."

"You have to know that our Invention Institute is now very criticized, and there have been colleagues who have criticized our department for wasting money to make a bunch of useless things, so that the amount of money allocated to our Invention Institute is getting less and less, and it is becoming more and more difficult for us to apply."