Water Used in Concrete Mixing | Quality Control
Hello, everyone. This is Enta. How do you handle the water used for mixing grout, mortar, sprayed concrete, and the like? As for the water we use, we rely on mountain spring water, river water, lake water, and tap water. I imagine we’re using freshwater—anything other than seawater. Of course, we don’t use rainwater…
Strength with and without Formwork | Verification of Formwork Construction
Hello, everyone. This is Enta. In my blog post the other day, I said I was planning to post a video of an experiment today, but when I really thought about it, I usually write most of my posts the day before. So, it’s impossible for me to write about something that happened today on the very same day. Maybe tomorrow… (probably lol) Anyway…
Filling a Large Hole in Natural Ground | On-Site Response
Hello, everyone. This is Enta. When you’re installing retaining walls, there are times when you run into a big gap in one spot and just don’t know what to do, right? For example, something like this. There’s a huge gap, and it doesn’t seem like you can bend the retaining wall to fit it. But it’s pretty deep. If you leave it alone, it might eventually collapse…
Temporary Repairs for Seals in Spray Machines | On-Site Solutions
Hello, everyone. This is Enta. What do you do when the gasket on the side cover of your spray gun wears out? The gasket on that cover tends to wear out pretty often, doesn’t it? When you don’t have a replacement gasket, you end up working with that hissing sound, but of course, air leaks can really affect the quality of your work…
Comparative Tests Should Be Conducted When Using Antifreeze | Winter Construction
Hello, everyone. It’s Enta here. I’ve been in the Nagano area for the past few days. That’s because this company is having its year-end party today, lol. Well, that’s not *the* only reason, but since that’s pretty much the main reason, I’m off to the party, lol. I’m fully recovered from the flu, too!! Anyway, moving on… Our office staff…
Spray Coating on an Extremely Dangerous Slope | Continued from the "Zabuton Frame" Article
Hello, everyone. This is Enta. The other day, I got a call from a junior colleague that sounded a bit like a complaint: “The ‘Zabuton’ series ended right at a good part—what happens next?” (lol) “The Steady Progress of the Zabuton Series” “The Steady Progress of the Zabuton Series (A Failed Zabuton Series)” It just kind of ended halfway through…
How to Conduct a Cantab Test | Procedures and Evaluation Criteria for Chloride Content Measurement | Explanation by a Slope Engineer
Hello, everyone. This is Enta. Are you using Cantab? Cantab is a product that makes it easy to measure chloride content in fresh concrete and fine aggregates. The chloride ion concentration in concrete is generally considered to be 0.3 kg/m³ or less. In short, if it exceeds this...
Summer Innovation | Grace Chemical FT7 Fresh Mortar Retarder
Hello, everyone. This is Enta. The Obon holiday is coming up this weekend. Please be extra careful not to get injured before the holiday begins! But enough of that. Summer ingenuity: Isn’t this the kind of thing that calls for a little ingenuity in the summer? The reason I say that is because at this job site, we’re purchasing fresh mortar from a ready-mix plant, and the formwork…
The Benefits of Underwater Curing | A Curing Method for Accurately Determining Core Test Strength
Hello, everyone. It’s Enta here. Actually, I’m in Tokyo today. When you think of Tokyo, you think of traditional comedy theaters! I really love them lol. So, I’m off to a comedy theater! Well, actually, today is the KTB Anchor Association’s general meeting. That’s the main event, but I really want to go to the comedy theater…