Hello, everyone.
This is Enta.
Just like last time, here are some questions I often get asked as a rebar installer lol
Should I leave the injection hose as is? Or should I remove it?
Actually, I've written about this before, lol.
Should I disconnect the injection hose?
I get asked that a lot.
Recently, the Ministry of Land, Infrastructure, Transport and Tourism has been stating that plastic spacers are considered foreign objects.
Sprayed mortar and sprayed concrete are now falling out of favor nationwide.
With that in mind, we also generally use steel spacers for sprayed mortar work and similar applications at our company.
As mentioned above, we ensure quality by using products that are equivalent to or better than Ras.
It looks like the prefecture is heading in that direction too (not sure about the city, lol).
In the case of construction methods such as sprayed mortar, the structure is directly exposed to heat.
This is Nikko in the summer.
When products with different expansion rates were included in that heat, it caused cracks, and we were often questioned about the quality, lol.
Of course, expansion and contraction due to the winter cold is also a possibility.
However, in the case of rebar insertion work or ground anchor work, the underlying approach is completely different.
Its function is not to protect the surface of the mountain, but to prevent the mountain itself from collapsing. (Deterrent and stabilizing effect)
Since the construction methods and approaches are fundamentally different, the question of whether that causes cracks is an entirely separate issue.
So, I guess there's no comparison. (Though there are some contradictions here and there, lol.)
Since the temperature in the soil remains relatively constant, it is largely unaffected by fluctuations in air temperature, making it less prone to deterioration.
Well, if we're getting into the details, there are even cases where the injection hose is embedded in the sprayed mortar...
There's plenty of that, though, lol (mortar spraying + rebar insertion)
See you later.
