When I was in school, a fishing rod length carbon fiber length was about 60$, my professor had one that he enthusiastically used as his pointer, the cost of steel rebar is about 0.95$ a foot.Carbon Fiber is weak in compression, strong in tension.
Concrete is strong in compression, weak in tension
Steel is good at both.
Fibers are already used in fiber enforce plastics, the most prominent use of this in major constructions are modern sewage and drainage systems where fiber reinforced polymer pipes are used.
I can see further development in carbon fiber to be used as a tensile reinforcement for reinforced concrete, but the strength, cost and reliability of steel offers strong competition.
I think CF is not a good bulk material, unlike steel. It would be difficult to deploy as a large scale construction material, and frankly speaking it’s not necessary because there’s really no need for stronger building materials than current technologies for most construction applications. So we’re probably going to see it more in manufacturing rather than construction. CF composites help resolve the compression issues for CF by creating a bed matrix that absorbs the compression forces. These large tow CF materials will most likely enable or make easier and cheaper the manufacturing of much larger CF parts.Carbon Fiber is weak in compression, strong in tension.
Concrete is strong in compression, weak in tension
Steel is good at both.
Fibers are already used in fiber enforce plastics, the most prominent use of this in major constructions are modern sewage and drainage systems where fiber reinforced polymer pipes are used.
I can see further development in carbon fiber to be used as a tensile reinforcement for reinforced concrete, but the strength, cost and reliability of steel offers strong competition.
Why do you need carbon fiber for construction? You can already build 250 story buildings with concrete and steel, and China is unlikely to ever build that tall a building anyways with the new construction regulations in place.Does carbon fiber age as well as steel? Will it become brittle after thirty years? If it costs only three to five times the price of steel, maybe it is worthwhile only for the top twenty floors of a 250-story building.
Does carbon fiber age as well as steel? Will it become brittle after thirty years? If it costs only three to five times the price of steel, maybe it is worthwhile only for the top twenty floors of a 250-story building.
I think CF is not a good bulk material, unlike steel. It would be difficult to deploy as a large scale construction material, and frankly speaking it’s not necessary because there’s really no need for stronger building materials than current technologies for most construction applications. So we’re probably going to see it more in manufacturing rather than construction. CF composites help resolve the compression issues for CF by creating a bed matrix that absorbs the compression forces. These large tow CF materials will most likely enable or make easier and cheaper the manufacturing of much larger CF parts.
Why do you need carbon fiber for construction? You can already build 250 story buildings with concrete and steel, and China is unlikely to ever build that tall a building anyways with the new construction regulations in place.
Someone here brought up applications in construction divorced from what the original link discussed.Isn't cf being discussed as a construction material? Hence I gave a hypothetical case of its application.