A Comparison of Theoretical and Actual Values for Frost Damage Prevention in Sprayed Concrete
Hello, everyone. This is Enta. How to maintain a constant ambient temperature during winter curing; the criteria for mixing cement slurry with hot water based on the final mix temperature; when it comes to winter construction, mixing with hot water is the best option, right!? The other day, I wrote about the final mix temperature of mortar as a measure against freeze damage…
Concrete or Mortar for Slope Construction? (Part 2)
Hello, everyone. This is Enta. Concrete or Mortar for Slope Construction? (Part 1) In this post, I’ll discuss why concrete isn’t used for slope formwork. Let’s review the mix designs. Item Mortar Concrete Main Materials…
Quality Control! Standards for Measuring Spray Thickness
Hello, everyone. This is Enta. I received a question the other day about quality control for sprayed concrete thickness, so I’d like to answer it here. Normally, sprayed concrete thickness looks something like this, right? The question was, “Is there a standard for this square shape?” But these days, even the standard specifications…
Concrete or Mortar for Slope Construction? (Part 1)
Hello, everyone. This is Enta. Are you doing any spray work? lol Concrete vs. Mortar In this post, I’ll be talking about sprayed concrete and sprayed mortar. I’m sure you already know the difference between mortar and concrete, but let’s go over it again. Item Mortar Concrete …
Methods for Maintaining a Constant Ambient Temperature During Winter Curing
Hello, everyone. This is Enta. We were talking about health and wellness the other day, and the topic of “What is briquette charcoal?” came up, so I thought I’d write a post about it. This is the briquette charcoal we use on site. We burn the briquettes inside this cylinder. So, what exactly is briquette charcoal? Well, let’s see…
How to Prepare Test Specimens for Sprayed Concrete and Mortar
Hello, everyone. This is Enta. How do you make test specimens for compressive strength tests on sprayed concrete? If you’re not familiar with construction sites, you’re probably thinking, “Huh?” So, in this post, I’ll explain how to make these test specimens. For basic sprayed concrete…
Using Spacers to Ensure the Correct Spray Thickness: Part 1
Hello, everyone. This is Enta. I’ve been writing a multilingual blog for a while now, lol. Well, it’s just the same content translated, but it’s meant to help foreign workers understand the Japanese “slope-work” industry, lol. Lately, I’ve been getting traffic from Vietnam, China, the U.S., Nepal, and South Korea, so I’ve been thinking, “Let’s take the slope-work industry global!” lol…
This is the best spot for the cutout in the zabuton frame!
Hello, everyone. This is Enta. Are you putting void tubes in your zabuton frames? I’ve talked about this before lol. But since I get asked about it a lot, I’ll write about it again lol. In actual practice, the finish looks better if you don’t use void tubes. There’s no doubt about that…
In formwork construction, should the mortar inside the formwork be sprayed at the same time!? Or not!??
Hello, everyone. This is Enta. How do you go about spraying mortar inside formwork? Do you spray it all at once, or in separate passes? I actually wrote about this topic before, lol. This time, I’d like to go over the pros and cons. Should I start by spraying the formwork…