Hello, everyone.
This is Enta.
These are photos of a collapse at a rebar installation site.
The mortar is lifting, and the rebar inserter is being pulled downward.
The design accounted for surface collapse and utilized a mortar-and-rebar insertion method.
The collapse is further back.
I heard it collapsed after the rain. (The soil became saturated and was washed away.)
So, what I want you to look at is the condition of the rebar—there’s grout on the tip.
Everything else is gone.
If you ask someone from the government (a layperson?), they'll say, "You haven't injected anything!" lol
But that's not the case.
Because the cement slurry used for grouting is so high-strength, it can easily come loose when subjected to impacts such as a collapse.
If you put mortar in a bucket and let it harden, then tap the bottom of the bucket, it breaks and falls out easily, right?
That's the general idea. (It's actually surprisingly easy to get, lol.)
In natural soil, it serves as reinforced soil using high-strength grout and rebar, but,
It can easily be peeled away by external forces coming from various directions on the collapsing natural ground.
When I go outside (on Saturday), I'm naked lol
When this happens with rock bolts in rivers and other bodies of water, only the surrounding soil and sediment get washed away, leaving the bolts exposed like Pocky sticks.
It was about 20 years ago, but I experienced the "Pocky phenomenon" at a construction site on a three-digit national highway in Mie Prefecture lol.
The retaining wall along the riverbank—along with the rebar inserts—was washed away by heavy rain, leaving the rebar inserts sticking out of the floating retaining wall like Pocky sticks.
Looking back now, I kind of regret not saving those photos. (Back then, I was still shooting on film.)
Even on a normal day, things sometimes fall apart after we finish on set, but when you look at it like this...Nature always wins, doesn't it?
It's scary to go against nature, isn't it?
Is our work going against nature?
It seems like achieving mutual coexistence and prosperity between nature and slope maintenance contractors is going to be quite a challenge, lol.
See you later.
