Hello, everyone.

This is Enta.

A typhoon is coming.

In particular, people from Okinawa, the islands, Kagoshima, and Miyazaki are so used to typhoons that they just take them in stride.

Typhoons have become so common that people don't really talk much about them anymore.

Even if there’s a huge uproar in other prefectures, I just think, “Hmm,” and lately, I’ve been wondering, “Is this even work?”

That's the feeling.

It's scary how easily we get used to things, isn't it?

Someone once told me, “It’s weird that you don’t even bat an eye when Sakurajima goes ‘boom’,” lol.

By the way, I'll be heading back home for a bit this summer. Please say hi to the guys at the slope maintenance company in Kagoshima for me, lol.

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But that's beside the point.

Cement Slurry Pressure Test, Part 3

Cement Slurry Pressure Test, Part 1

Cement Slurry Pressure Test, Part 2

Regarding the packer,

The Cement Slurry Won't Stop (Part 1)

The Cement Slurry Won't Stop (Part 2)

The Cement Slurry Won't Stop (Part 3)

The Cement Slurry Won't Stop (Part 4)

The Cement Slurry Won't Stop (Part 5)

 

Cutting and Core Drilling

This time, I just went ahead and cut it! But!! As for the type of pressure packer...

It turned out that the high-speed cutter was too thick to cut it.
(I wonder if I'll have to go to a hardware store to cut it, lol)

So, for now, I just went ahead and pulled out the core.

Actually, the blade on my corer is worn down, so it doesn't cut at all...

Oh! I'm calling Mr. Kappa Ebisen No. 2 from the neighborhood!!

They kindly agreed, so we received the core bit and began drilling.

Thank you so much, Mr. Kappa Ebisen No. 2!! You really saved the day!!

I started drilling, but it's really hard!

It's really hard, and it's hard to cut through.

Cement slurry really is a tough one, isn't it? Well, I have some disappointing news for everyone.

The non-pressurized unit is too thin and has a crack inside, so it is not in a condition suitable for testing.

I did consider correcting the results by multiplying the values for the short test specimens by a coefficient, but I decided against it this time.

This is clearly,Failure of the Test MethodThat's it.

I realized I should have switched between pressurized and unpressurized modes while the packer was suspended.

Next time, I'll hang him.

 

I didn't subject it to any impact while it was curing, but there's a crack inside... and there are tiny air bubbles near the center.

It’s likely that it cracked when it shifted to the left or right under its own weight while hardening.

But this cross-section is really important!

The crack at the bottom is caused by slight wobble in the high-speed cutter.

Stay tuned for the next Core—it's going to be exciting!

 

See you later.