- HOME
- List of Articles
- Quality Control
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…
Guidelines for Diluting Cement Slurry with Hot Water Based on Finished Mix Temperature
Hello, everyone. This is Enta. I received an email regarding the discussion we had the other day about mixing mortar with hot water. The question was, “What about grout?” Based on my experience, I think using cement milk is a viable option—especially when working in extremely cold conditions. I ran a simulation using mixing water at 50°C. Simulation…
Hot sake is the best drink for winter construction, right!?
Hello, everyone. This is Enta. I believe things are really getting underway starting today. I’ve been receiving phone calls and emails from many of you regarding my recent article. Thank you very much. As for the companies themselves, we are not merging or consolidating. Basically, they are all separate companies. However, we are collaborating closely…
Ways to Reduce Construction Management Costs in Spray-Applied Work
Hello, everyone. It’s Enta here. It really is the end of the year already! Things are so busy, aren’t they? I’ve been running all over the place myself at the end of the year, haha. I’m grateful for that. But why does everything get so hectic at the end of the year anyway!? Even though every month is the same… I find myself thinking that… …
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…
The 1-week and 4-week strengths are the criteria for the compressive strength test.
Hello, everyone. This is Enta. Do you know the standards for compression strength? I’ve talked about this before, but I guess a lot of you don’t really get it—or maybe you’ve never heard of it, lol. I’m sure many of us often perform ground anchor work or rebar insertion work. The materials we typically use for that are…
Construction Techniques for Cement Slurry Using Slow-Setting Water-Reducing Admixtures (This Will Give Your Construction Site Some Breathing Room)
Hello, everyone. This is Enta. This sweltering heat just keeps on going, doesn’t it? My air-conditioned work clothes aren’t helping at all—I’m actually much more comfortable taking them off and wearing long sleeves. Wait until the temperature drops a bit before wearing air-conditioned workwear! It’s counterproductive when it’s over 35°C! The right way to prevent heatstroke on the job site. But enough of that—let’s talk about cement mills…
Just don't add water!
Hello, everyone. This is Enta. When you’ve mixed a few batches of grout, the grout left in the mixer tends to get pretty hard, right? What do you do in that case? This video shows what happens when you add something to that hardened grout! At first, it’s all clumpy…
A Few Tips for Measuring Salt Content
Hello, everyone. This is Enta. I wrote about Cantab the other day, but here’s a bit more about it for beginners lol. Well, I’m sure the veterans already know most of this. It’s the kind of stuff that’ll have veterans nodding along. When measuring Cantab and organizing documents…



