Is 1 Corinthians 3:14-15 talking about the fire of hell? (verses included)

I have a question concerning branches who don’t bear fruit. They will be cast down into the fire, according to what Jesus Christ has said (John 15:5-6), but is this the fire of hell or going through the fire as it is mentioned in 1 Corinthians 3:14-15, and yet still be saved? What we have to keep in mind is … More Is 1 Corinthians 3:14-15 talking about the fire of hell? (verses included)