Hello, everyone.
This is Enta.
All in all, the three-day weekend is over.
Well, it was just a regular Sunday, right? lol
I went to a rock bolt job site the other day.
The hardest part is definitely climbing the stairs!
One round leaves me exhausted, and two rounds leave me completely worn out. My weak legs and lower back are really getting to me.

It used to look like this, but now it comes in single-pack sizes!
*It appears my blog post from the other day wasn't posted.
For some reason, there have been a lot of mistakes with my scheduled posts lately, and I apologize for any inconvenience this may have caused.
But that's beside the point.
Well then, here’s another installment in our crack-prevention series!Crack-Preventing MaterialのPart 4はI tried a different kind.
This time,BarChip MK30That's it!
Click here for the product page ↓↓↓↓↓↓↓↓
Portal Site
Hagiwara Industries, Inc.
Product Website
BarChip MK30
Anyway, for now, let's start with the Barchip MK30...
To be honest, it looks like...That's huge!!That's kind of how it is, lol
I thought it might get clogged.
The recommended dosage for this product is the manufacturer's standard amount, which is3.64 kg/m³ to 4.55 kg/m³
Therefore, we conducted the experiment using the lowest density, 3.64 kg/m³.



What do you think?
It's huge, isn't it?? lol

It doesn't prick your hands, and it breaks up easily. Since the pieces are this big, they don't clump together either.
We were able to spray it just as we normally would. (The workers said it didn't bother them either.)
This is what the surface of the test piece looks like.

It looks a bit like a mechanical pencil lead, but if it disperses evenly inside, it seems like it could be quite effective.
However, while this seems suitable for concrete with a thick cross-section, how about it for thin-section sprayed mortar or sprayed concrete applications?
That's kind of how it feels, too.
For this test piece, so that we can compare them
Barchip MK30 Admixture
Grace Microfiber Blend
Regular mortar
I made three of them.
I will also report on the test results and the status of the testing.
Next up is Grace Microfiber.
See you later.
About Crack-Prevention Materials (Part 1)
About Crack-Prevention Materials (Part 2)
About Crack-Prevention Materials (Part 4)
*Please note that this is strictly my personal opinion.
We are not affiliated with any manufacturers or vendors in particular.
We’ll go ahead and conduct some comparative tests using products from other manufacturers.
Fiber for Grout | The Rainy Hell of the End of the Fiscal Year



