Hello, everyone. This is Enta. We’re now in the second half of July, and it’s already unbearably hot on construction sites during the day, isn’t it? ^^ Concrete is just like people—if you leave it alone at this time of year, it loses moisture rapidly. But enough of that. In this post, I’ll be discussing “Why it’s a good idea to water concrete”…

Hello, everyone. This is Enta. This happened a while back, but I was on-site at a construction project overseeing an assembly inspection when the person in charge pointed out, “Oh, this is a T-joint,” and the whole site went dead silent lol. Since T-joints are generally prohibited under the Japan Society of Civil Engineers’ Standard Specifications for Concrete, it’s only natural that when one is found…

Hello, everyone. This is Enta. When you’re working on a slope and think, “The mortar feels unusually runny today,” the standard practice is to suspect the sand’s surface moisture content before questioning the mix design. (I even suspect the workers’ water-to-cement ratio, lol.) Basically, even if you think you’ve followed the mix design specified in the mix chart—say, “W/C=50%”—the sand might contain…

Hello, everyone. It’s Enta here. Around this time of year, just before the rainy season starts, things are kind of slow at work. Since I’m often out on site, I get a lot of questions. Recently, one of the younger guys asked me, “Enta-san, how do you actually handle overlapping?” It’s a good question, lol. But I couldn’t come up with an answer right away…

Hello, everyone. This is Enta. Every once in a while! I get asked, “What does ”1.24 m³ of sand’ mean in the mix ratio chart for sprayed mortar?” Lately, specifications just say “1:4 sprayed mortar,” and the 1.24 m³ figure…