Hello, everyone.

This is Enta.

 

How to Make a Packer (Special Edition 2)

Sorry for another bonus episode lol

But I just really, really wanted to write this...

 

Last time, we looked at a tensile stress distribution diagram.

That's right. This is it.

So, this time, here's a stress distribution diagram for a compression anchor.

Since stress tends to concentrate at the joint, wouldn't it be better to extend the packer a little further up on the tension-type anchor?

That’s the conclusion, but what about compression anchors?

This is a stress distribution diagram for a compression anchor.

Unlike tension anchors, compression anchors are designed to bear compressive loads along the entire length of the cement slurry.

Doesn't that make you think, "If we're going to install a packer, wouldn't it be better to go with the full-size version if possible?"

Just like with tension-type anchors, I can’t help but wonder if it’s really okay for the edge to break off when a packer is inserted partway through.

If we were to consider only the ideal scenario, it would seem that an all-packer design, as described above, is structurally safe.

Although the packer is made of inorganic material, since it's fabric, it can be completely cut apart.

You’re probably thinking, “It’s mixed in with the cement slurry, so it won’t come off, right?”

Actually, it's really easy to do. I've been experimenting with it, so I know for a fact.

I've conducted pressure tests on this blog before.

Cement Slurry Pressure Test, Part 1

We're currently working on Parts 1 through 7.

Ever since then, I’ve been thinking, “Oh, so that’s what ‘Packer adhesion’ means…” lol. I can’t really say that out loud, though.

 

However,This is purely my personal opinion.That's it.

There is no data regarding adhesion. It would likely be difficult to verify as well.

As I was writing this article, I wondered: Would things be different if the structure of the packer itself were to change????

What if the fibers inside the packer became longer and could still maintain sufficient tensile strength???......

I started thinking, “Oh, would it be the same if I just added some fiber??”...

Since the deep layers inside the packer tend to become high-pressure concrete, the strength is...

The other day, I was overthinking things so much that I got completely confused lol

It's a really fun time, though lol

 

And while the issue of temporary anchors was brought up, it seems like it’ll just end with everyone saying, “Well, they are just temporary, after all…”

It seems we need to give the temporary arrangements more careful consideration.

Just because it's temporary doesn't mean you can take it lightly. Since it's short-term, that's exactly why you have to do it right ^^

 

See you later.