Here are the causes of cracks in sprayed mortar applications—and the measures to prevent them!!
Hello, everyone. This is Enta. I’d like to write about why cracks form in sprayed mortar and what can be done to prevent them. I’ll list the causes of cracks below. Material Factors: The water-to-cement ratio is too high…
Construction Methods for Technical Intern Trainees (Part 4): Mortar Spraying and Concrete Spraying
Hello, everyone. This is Enta. Construction Methods for Technical Intern Trainees (Part 1): Slope Cleaning Workers Construction Methods for Technical Intern Trainees (Part 2): Lath Installers Construction Methods for Technical Intern Trainees (Part 3): On-Site Sprayed Formwork Workers Following up on the previous post, this time we’ll cover mortar sprayers and concrete sprayers. Mo…
How to Deal with a Mountain That Suffers Minor Landslides Every Time It Rains
Hello, everyone. This is Enta. Around this time of year, the rain causes landslides in the mountains every now and then, doesn’t it? Even temporary shotcrete can’t withstand the soil pressure coming from deeper down. The sections above that are still holding up because we’ve installed rock bolts there, though. What do you do in situations like this…
This Is What "Air Cleaning"—a Common Practice in Spray Coating—Is All About!
Hello, everyone. This is Enta. You’ve probably heard the term “air cleaning” in the context of spray coating, right? I’m sure you’ve seen photos of air cleaning being performed like this. Well, to be honest, I bet you’re thinking, “What on earth is that?” lol To put it simply…
When applying sprayed mortar, where is the best place to position the lath?
Hello, everyone. This is Enta. Where exactly is the lath mesh used for sprayed mortar or sprayed concrete? To be honest, I’ve always felt there was something contradictory about it lol. Well, these days, I’ve come to think, “Ah-ha! That’s probably it,” and just decided it doesn’t really matter…
There was a time when we used nails to control the thickness of the spray coating!!
Hello, everyone. This is Enta. Do you know what this is? It’s the nail next to the drainage hole inside the frame. If an ordinary person saw this, they’d probably think, “Huh? Did they forget to pull it out?” But there’s a reason for it. Well, people who’ve been working in slope construction for many years know this well…
Things to Keep in Mind When Applying Sprayed Mortar in Hot Spring Areas and Similar Locations!
Hello, everyone. This is Enta. Hot springs! Do you like them? I absolutely love them!!! lol But spraying in places like this is really tough. There’s bedrock here where the spring water—which contains mineral components—causes an alkali-aggregate reaction. You’re probably thinking, “What’s that?” lol &n…
For formwork spray application, if the material inside the formwork is mortar, spray it at the same time!
Hello, everyone. This is Enta. Do you spray the formwork and the mortar inside the formwork separately? Or do you spray them together? How do you determine the finished shape? “Since they’re different types of work, you must do them separately, right!?” That’s a common topic of conversation. The finished shape is determined in advance when assembling the formwork…
Do you cut the lath when there are joints?
Hello, everyone. This is Enta. I received a question asking, “When installing joints (Elastite) in slope stabilization work, do you cut the reinforcing mesh?” So I’ll answer that here. I asked an AI about joints. ーーーーーーーーーーーーーーーーーーー Q: Concrete joints…