Castle, in the back atrium,

A stone house ten meters long and four meters wide, ventilated front and back, was built.

The four northern soldiers, their faces flushed, took turns blowing the wind into the dug underground air tunnel.

Inside the stone room, scorching white flames erupted high.

An extremely muscular all-fruited man walked back and forth on the flames, muttering to himself from time to time, "It's a pity that there is no improvement in the bloodline, which is about the same temperature as the furnace fire." ”

After that, he kept carrying some raw materials and calcined them on the flame, while observing the melting degree of various metals placed next to him, so as to estimate the temperature of the flame.

Seeing that the raw materials were burned into congealed lumps, the stout man went directly into the dazzling flames, picked up the condensation that could burn a person's hands, stepped aside, and hammered it into powder.

......

"Why does it feel different from the cement powder I saw in my previous life?" the naked stout man rubbed his brows helplessly and muttered to himself.

The man was Jones, of course.

What he is doing now is to create the second or zero "invention" he came to this world - cement.

......

In fact, cement has been around in the world for a long time.

In Dr. Malwyn's early book, The Lost Civilization, it is mentioned that Valyrian buildings are incredibly tall, and it is rumored that they used a kind of "flowing stone", "hardening water", "magic solidification" and other techniques to build these tall buildings.

However, Jones himself estimated that the Valyrians, like the ancient Romans, probably used cement made from a mixture of quicklime and volcanic ash, after all, there was no shortage of volcanoes in Valyria.

In Dr. Marwyn's book "The Great Architecture", it is mentioned that he traveled to a city on the other side of the continent - Meereen, and found that there were no gaps between the stones on the exterior of the nearly 300-meter-high 'Great Golden Tower', and all of them were filled with a kind of gray stone.

Jones estimates that this is also cement.

So he can't be regarded as inventing cement in this world, but can only be regarded as a reproduction.

......

Now, however, he simply can't find a lot of ash, so the method of making cement is different.

He uses modern methods, using limestone and clay.

There is no shortage of limestone inter-river lands, one of which is the bluestone of the cliffs on the north side of the hills, and limestone is found in many parts of the inter-river land. The lime on the exterior of Riverrun and the Sanctuary is also calcined from local materials.

[Artificially broken limestone and clay are mixed together, calcined at high temperature, limestone will decompose into calcium oxide and carbon dioxide, of which carbon dioxide is discharged, and calcium oxide continues to react and fuse with clay minerals at high temperature to form a material with gelling properties, which is "cooked" by high temperature The material is called "clinker". 】

......

The lump that Jones just broke is naturally "clinker", which is the predecessor of cement powder.

However, Jones only remembered that limestone and clay calcination could make cement powder, but he did not know the ratio between the two raw materials, and the details of the optimization of raw materials with iron powder and clinker with gypsum.

Therefore, the color of the cement powder he burned was very light, and the white-gray cement powder was very different from what he had seen in his previous life, which made him very entangled.

"Sample ninety-one," Jones said, mixing the freshly calcined cement powder with a small amount of water, as well as stones and sand.

Looking at the strange 'concrete' in the wooden box, Jones's brows furrowed even deeper, and he said to himself, "You have to get hard!"

"Old lady Vance is still waiting for you, don't be like your former ninety brother, either you can't get hard, or you will break when you touch it. ”

......

At that dinner, Jones also knew something about Mrs. Vance, and also made a deal with her.

Fort Luxe is an important source of horses in the Riverlands.

When the old lady of Vance was burned in the castle, she fled north with a lot of grooms and hundreds of horses from the stable. Later, after going around in the mountains, I came to the territory of the Earl of Acorn Hall, ready to transit.

After listening to the old woman's experience, Jones praised her bravery and wisdom, and at the same time was very greedy for her more than 400 war horses.

A hard grab is certainly not possible.

No matter what the Vances say, they are also their allies.

Therefore, he tried to fool the old woman of Vance for a long time, and only then did he bluff her with the "new construction technology of the school city", and promised to help her rebuild the castle of Rest, in exchange for the old woman's war horse that was more important than life.

However, when Jones mentioned borrowing the war horse first, Vance's old woman shook her head a few times, saying that she was willing to hand over the war horse only after seeing the "faster, harder, and higher" city wall that he said was built.

So

As soon as Jones announced his plan from the canonization ceremony, he personally went into battle and started the cement experiment.

Of course, this was also one of his original plans, because once the cement was made, the ten-meter-high rubble self-weight wall could rise almost instantaneously under the combined force of thousands of people, and if he surrounded the entire hill and cooperated with the moat under the hill, the security of his castle would definitely be increased by an order of magnitude.

Today is the third day of the experiment, and he has been running back and forth in this furnace-like stone house since dawn.

If he hadn't been roasted by the fire, he would have been able to stay excited, and he would have been tired and lying down.

......

"Hey, it's really tiring to invent something," Jones said helplessly, he had actually been a good student in his previous life, and he had gone to a decent university, but that didn't stop him from being inherently lazy.

In his expectation, the stone can play a lot of tricks, lime, cement, glass, etc., but now that he has arrived in cement, the tiredness makes him want to retreat, after all, the constant rotation of disappointment and hope makes people very tired psychologically.

"In addition to stones, there are four great inventions...... Engraving printing, the compass should be quite easy, papermaking, making good paper, it should be more difficult, making usable paper, such as paper to wipe the buttocks, anyway, it is boiled and dried, it should not be too difficult. The last one, black powder is not too difficult, one sulfur, two nitrate and three charcoal, although the specific ratio is not like this, but it can also be tested, the key is that saltpeter and the name of this world do not match......"

Once again, Jones felt he had a long way to go.

He walked around Cobain's laboratory and found nothing with saltpeter.

But that's why he didn't tell Cobain what properties he was looking for.

Otherwise, Cobain might have known.

Because Cobain has once again done something he didn't expect, and his inventions in this world have been completely zeroed out - he has found highly purified alcohol in Cobain's bottles and cans.

"I discovered this thing more than ten years ago, and it is very effective in treating wounds and preventing them from smelling, but those gray sheep in the school city don't believe me......" Cobain said with pride and resentment.

After hearing this, Jones put down the alcohol bottle a little speechlessly, patted Coben on the shoulder, and had to encourage him to continue collecting, purifying, and observing the properties......

......

In fact, Jones's weapon of killing the traverser of black powder is still in a stage of hesitation.

Originally, he was already invincible on the battlefield, and when he thought of the power of the cannon, various allusions would come to mind: Pandora's box, which was a cocoon and a source of endless temptation and disaster, Zhou Xing, who 'invited you into the urn', and King Louis XVI who designed the guillotine for himself......

Thinking of this, Jones couldn't help but touch his neck.

"I'm not lazy, uh, probably not...... There is no iron ore in the Riverlands at all, and almost all the iron, copper, and gold mines in the entire continent of Westeros are in the hands of Duke Tywin...... But don't I work so hard to invent a cannon and let that guy Tywin steal it, and at that time, I knelt down and sang conquest, and he probably wouldn't listen. ”