Short fiber-reinforced concrete structure using continuous fiber-reinforced polymer material
A concrete structure includes a continuous fiber-reinforced polymer material arranged as a main reinforcing material or a tendon. A short fiber reinforcing material consisting of an organic fiber is mixed in 0.5% or more with respect to an entire volume. The continuous fiber-reinforced polymer material is shaped like a rod or a stranded wire. A ratio Lf/Gm between a fiber length Lf of the organic fiber of the short fiber reinforcing material and a maximum aggregate diameter Gm of a concrete composition is 1.2 to 3.7, and an aspect ratio Lf/De, in which De is an equivalent diameter that is a cross-sectional area of the organic fiber converted into a circle diameter, is 30 to 69.
1. A concrete structure, in which a continuous fiber-reinforced polymer material is arranged as a main reinforcing material or a tendon,
wherein a short fiber reinforcing material consisting of an organic fiber is mixed in 0.5% or more and 2.5% or less, with respect to a concrete volume,
wherein the continuous fiber-reinforced polymer material is shaped as a rod or a stranded wire, and
wherein a ratio Lf/Gm between a fiber length Lf of the organic fiber of the short fiber reinforcing material and a maximum aggregate diameter Gm of a concrete composition is 1.2 or more and 3.7 or less, and an aspect ratio Lf/De is 30 or more and 69 or less, wherein De is an equivalent diameter which is a cross-sectional area of the organic fiber converted into a circle diameter.
2. A concrete structure, in which a continuous fiber reinforcing material is arranged as a main reinforcing material or a tendon,
wherein a short fiber reinforcing material consisting of an organic fiber is mixed in 0.5% or more and 2.5% or less, with respect to a concrete volume,
wherein the continuous fiber-reinforced polymer material is shaped as a rod or a stranded wire, and
wherein a ratio Lf/Gm between a fiber length Lf of the organic fiber of the short fiber reinforcing material and a maximum aggregate diameter Gm of a concrete composition is 1.2 or more and 3.7 or less, and a cross-sectional area of the organic fiber is 0.19 mm 2 to 0.79 mm 2 .
3. A concrete slab, in which a continuous fiber-reinforced polymer material is arranged as a main reinforcing material or a tendon,
wherein a short fiber reinforcing material consisting of an organic fiber is mixed in 0.5% or more and 2.5% or less, with respect to a concrete volume,
wherein the continuous fiber-reinforced polymer material is shaped as a rod or a stranded wire, and
wherein a ratio Lf/Gm between a fiber length Lf of the organic fiber of the short fiber reinforcing material and a maximum aggregate diameter Gm of a concrete composition is 1.2 or more and 3.7 or less, and an aspect ratio Lf/De is 30 or more and 69 or less, wherein De is an equivalent diameter which is a cross-sectional area of the organic fiber converted into a circle diameter.
4. A concrete slab, in which a continuous fiber-reinforced polymer material is arranged as a main reinforcing material or a tendon,
wherein a short fiber reinforcing material consisting of an organic fiber is mixed in 0.5% or more and 2.5% or less, with respect to a concrete volume,
wherein the continuous fiber-reinforced polymer material is shaped as a rod or a stranded wire, and
wherein a ratio Lf/Gm between a fiber length Lf of the organic fiber of the short fiber reinforcing material and a maximum aggregate diameter Gm of a concrete composition is 1.2 or more and 3.7 or less, and a cross-sectional area of the organic fiber is 0.19 mm 2 to 0.79 mm 2 .
5. The concrete slab according to claim 3 , wherein the continuous fiber-reinforced polymer material comprises a carbon fiber or an aramid fiber.
6. The concrete slab according to claim 3 , wherein the organic fiber of the short fiber reinforcing material comprises a polypropylene fiber.
7. The concrete slab according to claim 3 , wherein pre-stress is introduced by the continuous fiber-reinforced polymer material.
8. The concrete slab according to claim 4 , wherein the continuous fiber-reinforced polymer material comprises a carbon fiber or an aramid fiber.
9. The concrete slab according to claim 4 , wherein the organic fiber of the short fiber reinforcing material comprises a polypropylene fiber.
10. The concrete slab according to claim 4 , wherein pre-stress is introduced by the continuous fiber-reinforced polymer material.