JP2007514077A - Component - Google Patents

Abstract

The structural element has a pretension type fiber reinforced plastic reinforced member having a constant cross-sectional area throughout the length direction, and a polymer concrete member surrounding the pretension type fiber reinforced plastic reinforced member, and the fiber reinforced plastic reinforced member. The force transmission between the polymer concrete and the polymer concrete is due to polymer adhesion.

Description

  The present invention relates to a component. More particularly, the present invention relates to a component composed of polymer concrete.

  The development of the civil engineering and construction industries has led to a continuing demand for building materials with new and improved performance attributes. Polymer concrete offers the potential to meet these new requirements.

  Polymer concrete is composed of aggregates that are bonded with a resin binder instead of the cement binder used in standard cement concrete. Polymer concrete is generally used in various applications such as conduits, tunnel supports, bridge decks, and electrolyte containers because of its good durability and chemical resistance. A further advantage of polymer concrete is that it has a very low permeability and a very short setting time. The compressive and tensile forces of polymer concrete are generally significantly higher than standard concrete.

  As a result, polymer concrete structures are generally smaller and significantly lighter than equivalent structures made of standard concrete. However, polymer concrete structures tend to bend significantly more than equivalent standard concrete structures because of the relatively low modulus of polymer concrete compared to standard concrete.

  Like standard concrete, polymer concrete structures generally require reinforcement to withstand tensile loads. Even if strengthening to withstand tensile forces is effective, in many situations it is not possible to prevent cracking that occurs in the tensile region of the polymer concrete member. Although conventional steel reinforcement can be used in polymer concrete structures, these cracks can lead to corrosion of the steel reinforcement because polymer concrete is often used in corrosive environments.

  In order to address the corrosion problem of steel reinforcement, composite reinforcement has also been used in polymer concrete as well. The composite reinforcement used is a shape similar to a steel bar, ie a barbed or circular bar. However, in general, cracks cause a large stress concentration at the crack location, but the composite reinforcement has brittle properties, which can cause early damage to the composite reinforcement. The latter is particularly a concern in dynamic load environments.

Furthermore, cracks can adversely affect the appearance of polymer concrete members and can cause safety concerns for the general public.
In conventional concrete structures, prestressing reinforcement has been used to help prevent cracking in concrete structures. Two different methods are widely used for this purpose: post-tensioning and pre-tensioning.

  In post-tensioning, the reinforcement is tensioned after the concrete is hardened. The reinforcement is not bonded to the surrounding concrete during pre-stress, but is installed in a special conduit that passes through this member. At one end, the reinforcement is secured to the hardened concrete using local anchors and at the other end is pulled up against the concrete until the required level of prestress is obtained and then locked off. Upon completion, the line may or may not be pressure grouting.

  If the prestress reinforcement is tensioned before the concrete is poured, the member is pretensioned. The reinforcement is tensioned between the two ends and then the concrete is poured. When the concrete becomes strong enough, the prestressing force is released from the end. As the reinforcement attempts to shrink, the concrete is forced to compress. Sliding of the reinforcement in the concrete is prevented by spirals in the prestress cable, typically made of streaks on the reinforcement or individual wires.

These wires are corrugated or indented to enhance the bonding characteristics.
Both of the above-described tensioning methods work well. However, even if concrete cracks are prevented by prestress, concrete is porous and water and chemicals can reach the steel prestress reinforcement and can cause corrosion, particularly in a salt water environment.

  In order to reduce the corrosion that can occur with steel prestress reinforcements, composite reinforcements are similarly used against prestressing of concrete structures. Both post-tensioning and pre-tensioning methods are used in composite reinforcement. However, since the strength of the fiber composite reinforcement in the direction perpendicular to the fiber direction is limited, when the post-tensioning method is used, longitudinal splitting or lateral crushing often occurs at the anchor.

  Research continues worldwide to develop special anchors for fiber composite post-tension reinforcements. In the pretensioning process, it is difficult to obtain a proper bond / bond between the fiber composite reinforcement and the standard concrete due to the difficulty in providing the composite reinforcement with the appropriate streaks to prevent slippage. is there.

Some examples of using fiber composites for standard concrete pretensioning are disclosed in US Pat. In Patent Document 1, various anchors are used in the prestress method, and a ring is used to hold the concrete in order to perform prestress. In patent document 2, in order to produce | generate the composite fiber reinforcement of a nonuniform shape, foaming resin is used. Because there is a non-uniform shape, concrete rebar is used to hold concrete for prestressing. To date, however, the use of fiber composite reinforcement has been limited for pretensioning processes.
US Patent Application Publication No. 2004/0130063 Japanese Patent Laid-Open No. 5-239885

The object of the present invention is to overcome or alleviate the above disadvantages or to provide consumers with useful or commercial options.
A preferred object of the present invention is to make a component made of polymer concrete with markedly improved crack resistance.

A further preferred object of the present invention is to produce a polymer concrete structure with improved deflection behavior.
A further preferred object of the present invention is to produce a polymer concrete structure with improved recovery after overload.

A further preferred object of the present invention is to produce a polymer concrete structure with improved strength in shear and torsion.
A further preferred object of the present invention is to produce a polymer concrete structure with improved fatigue resistance.

  A further preferred object of the invention is to make it possible to cost-effectively produce components made of polymer concrete.

(First embodiment)
In one form, although not necessarily the only or most extensive form, the invention relates to a component,
At least one plastic reinforcing member, the plastic reinforcing member having a constant cross-sectional area throughout its length;
A polymer concrete member surrounding the pretension type fiber reinforced plastic reinforcing member,
The force transmission between the fiber reinforced plastic reinforcing member and the castable material is due to polymer adhesion.

  Preferably, the ratio of the peripheral length of the pre-tensioned fiber reinforced plastic reinforcing member to the cross-sectional area of the pre-tensioned fiber-reinforced plastic reinforced member is significantly larger than the ratio of the peripheral length to the cross-sectional area of a circular bar having the same cross-sectional area. It is. This is to reduce the shear stress in the contact area between the reinforcement and the polymer concrete.

  Preferably, the ratio of the peripheral length of the pretensioned fiber reinforced plastic reinforcing member to the cross sectional area of the pretensioned fiber reinforced plastic reinforcing member is at least 3 minutes from the ratio of the peripheral length to the cross sectional area of the circular bar having the same cross sectional area. One big thing.

  More preferably, the ratio of the peripheral length of the pretensioned fiber reinforced plastic reinforcing member to the cross sectional area of the pretensioned fiber reinforced plastic reinforcing member is at least half larger than the ratio of the peripheral length to the cross sectional area of the circular bar having the same cross sectional area. Is.

  More preferably, the ratio of the peripheral length of the pretensioned fiber reinforced plastic reinforcing member to the cross sectional area of the pretensioned fiber reinforced plastic reinforcing member is at least 2 of the ratio of the peripheral length to the cross sectional area of the circular bar having the same cross sectional area. It is what is doubled.

  Further preferably, the ratio of the peripheral length of the pretensioned fiber reinforced plastic reinforcing member to the cross sectional area of the pretensioned fiber reinforced plastic reinforcing member is at least 4 of the ratio of the peripheral length to the cross sectional area of the circular bar having the same cross sectional area. It is what is doubled.

Preferably, a suitable circumference / area ratio is obtained by using a fiber reinforced plastic reinforced member having a thin cross section. The fiber reinforced plastic reinforcing member is solid or hollow.
Preferably, the thickness of the pretension fiber reinforced plastic reinforcing member is 1 to 5 millimeters.

The component includes at least one pretension fiber reinforced plastic reinforcement member.
The pretension level of the fiber composite reinforcement can vary from 0 to approximately 80 to 100% of the maximum tensile strength of the reinforcement.

Preferably, the pretension level of the reinforcement is 20 to 50% of the maximum tensile strength of the reinforcement member.
Depending on the desired properties of the component, the fiber reinforced plastic reinforced member may be suitable glass,
Made of carbon or aramid fiber and / or plastic material.

  Preferably, the surface area of the fiber reinforced plastic reinforcement member that contacts the castable material is polished to increase the adhesion between the castable material and the fiber reinforced plastic reinforcement member. As an alternative, the fiber reinforced plastic reinforcement member is coated with a sand and / or gravel interface to increase adhesion.

  The pretension fiber reinforced plastic reinforced member is a drawn fiber reinforced plastic. Preferably, the fiber reinforced plastic reinforcement member has a flat surface to simplify the sanding or polishing process. The reinforcing member is hollow to reduce the maximum weight.

  In one embodiment, the drawn pretensioned fiber reinforced plastic reinforced member is filled with standard concrete, polymer concrete, or a filled resin system and metal or fiber composite rebar to improve load capacity and stiffness.

In other embodiments, the hollow drawn pretensioned fiber reinforced plastic reinforcement member is filled with other materials depending on the desired properties of the tubular reinforcement element.
The hollow drawn pretensioned fiber reinforced plastic reinforced member is filled before or after pretensioning of the member. Preferably, the member is filled after pre-tensioning of the fiber reinforced plastic reinforcing member.

The fiber reinforced plastic member extends longitudinally and laterally through the component. One or more longitudinal and / or transverse fiber reinforced plastic members are pretensioned.
The transverse fiber reinforced plastic member may pass through the longitudinal fiber reinforced plastic member.

  Slots are provided in either or both of the members to allow crossing of the transverse and longitudinal fiber reinforced plastic reinforcement members. The longitudinal fiber reinforced plastic member and the transverse fiber reinforced plastic member are locked together after crossing.

  In order to lock the longitudinal fiber reinforced plastic reinforced member and the transverse fiber reinforced plastic reinforced member, the longitudinal fiber reinforced plastic reinforced member and / or the transverse fiber reinforced plastic reinforced member may be engaged with the slots of other members. Notches are provided.

The blend of polymer concrete includes a large amount of polymer resin, a large amount of light aggregate having a specific gravity smaller than the specific gravity of the resin, and a large amount of heavy aggregate having a specific gravity larger than the specific gravity of the resin.
The resin is a combination of a suitable polyester, vinyl ester, epoxy, phenol or polyurethane resin, resin, depending on the desired composition and corrosion resistance of the polymer concrete.

Preferably, the resin content is 25 to 30% by volume.
A lightweight aggregate with a specific gravity smaller than the specific gravity of the resin is a type of lightweight aggregate or a combination of lightweight aggregates, depending on the desired composition and corrosion resistance of the polymer concrete. In the normal case, the lightweight aggregate had a specific gravity of 0.5 to 0.9. Usually, the lightweight aggregate is 20 to 25% by volume ratio of the polymer concrete. Preferably, the lightweight aggregate is a central sphere. The central sphere usually had a specific gravity of about 0.7. In other cases, hollow glass microspheres having the same specific gravity and volume are used.

A heavy aggregate with a specific gravity greater than the specific gravity of the resin is a type of heavy aggregate, or a combination of heavy aggregates, depending on the desired composition and corrosion resistance of the polymer concrete. Usually, heavy aggregate is 40 to 60% by volume ratio of polymer concrete. The heavy aggregate had a specific gravity of 2 to 3.5.

  Preferably, the heavy aggregate is basalt. Usually basalt is crushed. The crushed basalt had a particle size of 1 to 7 millimeters. Preferably, the basalt is 40 to 50% by volume ratio of the polymer concrete. Basalt usually has a specific gravity of about 2.8. In other cases, natural or artificial sand having the same specific gravity as basalt is used. Preferably, the sand will be 50-60% by volume of the polymer concrete.

In other cases, the heavy aggregate is composed of one or more of colored stones, gravel, limestone, shells, glass, or similar materials.
Preferably, the resin contains thixotropy for keeping the lightweight aggregate suspended.

  The polymer concrete of the present invention further includes a fibrous reinforcing material to improve the structural properties of the polymer concrete mixture. The reinforcing material is glass, aramid, carbon, timber and / or thermoplastic fibers.

In another aspect, the invention relates to a method of making a component composed of polymer concrete, said method comprising:
Producing a partial mold of the outer shape of the component to be produced;
Providing a fiber reinforced plastic member in the mold and tensioning at least one of the fiber reinforced plastic members;
Placing polymer concrete on the fiber reinforced plastic member;
Making the castable material curable to form the component;
Releasing the pretensioning member after the castable material is cured to form the component.

  The fiber reinforced plastic member is ground before the fiber reinforced plastic member is introduced into the mold. As an alternative, the fiber reinforced plastic member is coated with a sand and / or gravel interface to increase adhesion.

In one embodiment, a fiber reinforced plastic member is placed in a mold, tensioned, and polymer concrete is cast onto the fiber reinforced plastic member.
In another embodiment, the fiber reinforced plastic member is placed in the mold after sufficient castable material has been sent into the mold to complete the component. At least one of the fiber reinforced plastic members is tensioned before the polymer concrete is cured.

  In yet another embodiment, a portion of the polymer concrete is introduced into the mold and a portion of the fiber reinforced plastic member is introduced into the mold and pretensioned. Thereafter, more polymer concrete is introduced into the mold and more fiber reinforced plastic members are introduced into the mold and pretensioned. This process continues until the component is complete.

  If the fiber reinforced plastic member is hollow, the hollow fiber reinforced plastic member is filled with concrete, polymer concrete, or a filled resin system and / or metal or reinforced plastic rod. After tensioning the hollow fiber reinforced plastic member, the hollow fiber reinforced plastic member is filled. Usually, the hollow fiber reinforced plastic member is filled after the tensioning is removed and the polymer concrete is cured.

1A to 1D and FIGS. 2A to 2C show cross-sectional views of the fiber reinforced plastic reinforcing member 20. As shown, various forms of fiber reinforced plastic reinforcement members are used.

  1A-1D illustrate a fiber reinforced plastic reinforcement member suitable for use to make a prestress component. The reason that each of the fiber reinforced plastic reinforcement members shown can be used is that the stress through the member is small when placed in a component. On the other hand, the shear stress generated in the fiber reinforced plastic reinforcement members shown in FIGS. 2A-2C during pretensioning is quite large, so damage is likely to occur at small loads, causing damage to the corresponding components. Furthermore, the fiber reinforced members shown in FIGS. 2A-2C are very likely to be severely damaged when bolts, screws, and / or nails are penetrated.

  The fiber reinforced plastic reinforced members of FIGS. 1A-1D operate effectively when the perimeter length 21 of each of the fiber reinforced plastic reinforced members is relatively large compared to the cross-sectional area 22. The fiber reinforced plastic reinforcing member shown in FIGS. 2A to 2B has a relatively small perimeter 21 compared to the cross-sectional area 22. Since the peripheral length of the fiber reinforced plastic reinforcing member shown in FIGS. 1A to 1D is large, the bonding area or the contact area where the polymer concrete can be bonded to the fiber reinforced plastic reinforcing member 20 is increased. This adhesion can be strengthened by abrasion of the contact surface of the fiber reinforced plastic reinforcing member.

The perimeter / area ratio was calculated for each of the fiber reinforced plastic reinforcement members shown in FIGS. 1A, 1B, and 2B. Since each fiber reinforced plastic reinforced member has the same cross-sectional area, it has the same theoretical tensile strength.

肉厚断面積が小さいものについては、固体円状断面よりも周囲/面積比率がかなり大き
い。

For those with a small cross-sectional area, the perimeter / area ratio is much larger than for solid circular sections.

  FIG. 3 shows the components of the prestressed concrete beam 300 shape. The concrete beam is formed from polymer concrete 30 that surrounds a square tubular fiber reinforced plastic reinforcement member 20 that extends along the beam length. The additional polymer concrete 40 is disposed in the fiber reinforced plastic reinforcing member 20, and the steel bars 50 are embedded in the polymer concrete 40 and extend in the length direction of the fiber reinforced plastic reinforcing member 20.

  4A-4F illustrate the process used to construct the prestress beam 300 of FIG. In order to produce the prestress beam 300, a mold 60 is produced. This fiber reinforced plastic reinforced member 20 is then tensioned. The tensioning of the fiber reinforced plastic reinforced member 20 can be performed in any number of ways, but in general, a clamp is provided on either end of the fiber reinforced plastic reinforced member 20 and, as indicated by the arrows, fiber reinforced A step of applying an opposite force to the plastic reinforcing member 20 is included.

  When the fiber reinforced plastic reinforcing member 20 is tensioned, it is provided in the mold as shown in FIG. 4A. The polymer concrete 30 is then poured into a mold as shown in FIG. 4B until the full fiber reinforced plastic reinforcement member is covered as shown in FIG. 4C.

  At this point, the polymer concrete 30 can be solidified. As the polymer concrete 30 solidifies, the tensioning of the fiber reinforced plastic reinforcement member 20 is released to create a prestressed beam 300. At this point, if the fiber reinforced plastic reinforcing member 20 extends beyond the beam end, it can be cut so that the end of the fiber reinforced plastic reinforcing member 20 is flush with the beam 300 end.

  To add intensity to the beam 300, the additional steps of FIGS. 4D and 4E can be completed. In FIG. 4E, polymer concrete 40 is added into the fiber reinforced plastic reinforcement member 20. FIG. 4F shows that the addition of steel bars 50 can be applied as well. By adding the polymer concrete 40 and the reinforcing bars 50, the rigidity, strength and ductility characteristics of the beam are remarkably improved.

  FIG. 5 is a prestressed polymer concrete slat 400 shaped component that can be used on a park bench. In the present embodiment, the fiber reinforced plastic reinforcing member 20 is a flat surface member that extends along the slat length direction and is surrounded by the polymer concrete 30.

  FIG. 6 shows the components of the prestressed concrete utility pole 500 shape. In this embodiment, a plurality of rectangular tubular fiber reinforced plastic reinforcing members 20 are used to form a telephone pole. The fiber reinforced plastic reinforced member is surrounded by the polymer concrete 30 to form the telegraph pole 500.

FIG. 7 shows another prestressed concrete beam 700 shaped component.
In this embodiment, different fiber reinforced plastic reinforced members are used. One flat fiber reinforced plastic reinforced member 24 and four square tubular fiber reinforced plastic reinforced members 25 are used for beam forming. As previously described, all fiber reinforced plastic reinforcement members are pretensioned. A series of ligatures 26 are provided around the fiber reinforced plastic reinforcement member to help splice the fiber reinforced plastic reinforcement member and provide lateral containment for the beam 700.

  In FIG. 8, a prestress enhancement beam 800 is further shown. In this example, the beam 800 comprises a standard concrete top 70 and a polymer concrete base 30. A series of square tubular fiber reinforced plastic reinforcement members 20 are provided in the polymer concrete. Two ligatures 26 extend through conventional concrete 70 and polymer concrete 30 and extend around fiber reinforced plastic reinforced member 20 to join conventional concrete 70, polymer concrete 30 and fiber reinforced plastic reinforced member 20. . Beam 800 is also made so that hollow 80 extends through beam 800 to make beam 800 lighter. This hollow part is produced using a sacrificial foam void former.

Of course, during installation of any of the above components, holes are often formed in the members to accommodate bolts, screws, and / or nails. Due to the elongated cross-sectional shape, thin walled solid and hollow fiber composite reinforcement members spread the reinforcement fibers over a large area of the component cross-section, so damage that occurs in bolt holes, screws, and / or nails is generally Limited to a few individual fibers. In the case of a thick-walled solid reinforcing member, all the fibers are bundled in a small area, so the bolts or screws that pass through this area damage many reinforcing fibers, causing great damage to the reinforcing member, It can be a defect.

  In each of the above examples, the contact area provided on the outer surface of the fiber reinforced plastic reinforcement member is sufficiently large so that the polymer concrete can adhere to the surface of the fiber reinforced plastic reinforcement member without significant shear stress. Since the thickness of the fiber reinforced plastic reinforced member is also relatively small, the shear stress in the fiber reinforced plastic reinforced member is also relatively small. This makes it possible to pretension the fiber reinforced plastic reinforced member in order to produce the prestress component.

  Naturally, the degree of polymer adhesion formed between the polymer concrete and the fiber reinforced plastic reinforcing member is high, i.e. approximately 50 MPA. This makes it possible to use fiber reinforced plastic reinforced members in prestressed polymer concrete that could not be achieved previously. Furthermore, the polymer adhesion degree formed between polymer concrete and a fiber reinforced plastic reinforcement member improves by increasing the fiber reinforced plastic reinforcement member surface which contacts polymer concrete.

  It goes without saying that other examples of the above-described embodiment are included without departing from the spirit or scope of application of the present invention.

It is a cross-sectional view of a fiber-reinforced plastic reinforced member suitable for pretensioning because the ratio of the peripheral length to the cross-sectional area is large, so that the shear stress in the contact area is small. It is a cross-sectional view of a fiber-reinforced plastic reinforced member suitable for pretensioning because the ratio of the peripheral length to the cross-sectional area is large, so that the shear stress in the contact area is small. It is a cross-sectional view of a fiber-reinforced plastic reinforced member suitable for pretensioning because the ratio of the peripheral length to the cross-sectional area is large, so that the shear stress in the contact area is small. It is a cross-sectional view of a fiber-reinforced plastic reinforced member suitable for pretensioning because the ratio of the peripheral length to the cross-sectional area is large, so that the shear stress in the contact area is small. FIG. 4 is a cross-sectional view of a fiber reinforced plastic reinforcing member that is not suitable for pretensioning because the ratio of the circumferential length to the cross-sectional area is small, resulting in a large shear stress in the contact area. FIG. 4 is a cross-sectional view of a fiber reinforced plastic reinforcing member that is not suitable for pretensioning because the ratio of the circumferential length to the cross-sectional area is small, resulting in a large shear stress in the contact area. FIG. 4 is a cross-sectional view of a fiber reinforced plastic reinforcing member that is not suitable for pretensioning because the ratio of the circumferential length to the cross-sectional area is small, resulting in a large shear stress in the contact area. 1 is a perspective view of a beam according to a first embodiment of the present invention. FIG. 4 is a side sectional view of the beam shown in FIG. 3. FIG. 4 is a side sectional view of the beam shown in FIG. 3. 3B is a side sectional view of the beam shown in FIG. 3A. FIG. 3B is a side sectional view of the beam shown in FIG. 3A. FIG. 3B is a side cross-sectional view of the beam formed of FIG. 3A. FIG. 3B is a side cross-sectional view of the beam formed of FIG. 3A. FIG. It is a perspective view of a park bench slat according to a second embodiment of the present invention. It is a perspective view of the telephone line utility pole by 4th Example of this invention. FIG. 6 is a perspective view of another beam according to the third embodiment of the present invention. FIG. 10 is a perspective view of still another beam according to the fifth embodiment of the present invention.

Claims (31)

At least one plastic reinforced member reinforced with a pretensioned pretensioned fiber, the plastic reinforced member having a constant cross-sectional area throughout its length,
A polymer concrete member surrounding the plastic reinforcing member,
A component in which force transmission between the plastic reinforced member and the polymer concrete takes place via polymer adhesion. 2. The component of claim 1, wherein the ratio of the peripheral length of the reinforced plastic reinforcing member to the cross sectional area of the plastic reinforcing member is at least one third of the ratio of the peripheral length to the cross sectional area of the circular bar having the same cross sectional area. Big component. 2. The component of claim 1, wherein the ratio of the peripheral length of the reinforced plastic reinforcing member to the cross-sectional area of the plastic reinforcing member is at least half the ratio of the peripheral length to the cross-sectional area of a circular bar of the same cross-sectional area. . 2. The component of claim 1, wherein the peripheral length ratio of the plastic reinforcing member to the cross sectional area of the plastic reinforcing member is at least twice the ratio of the peripheral length to the cross sectional area of the circular bar of the same cross sectional area. . 2. The component of claim 1 wherein the ratio of the peripheral length of the plastic reinforced member to the cross sectional area of the plastic reinforced member is at least four times the ratio of the peripheral length to the cross sectional area of the circular bar of the same cross sectional area. . 2. The component of claim 1, wherein the plastic reinforcing member is a solid. The component of claim 1, wherein the plastic reinforcing member is hollow. The component of claim 1, wherein the plastic reinforcing member has a wall thickness of 1 to 5 millimeters. The component of claim 1, comprising at least one non-plastic reinforcing member reinforced with pre-tensioned pretensioned fibers. The component of claim 1, wherein force transmission between the plastic reinforced member and the polymer concrete is 20 to 50% of the maximum tensile strength of the reinforced member. The component of claim 1, wherein the plastic reinforcing member is a drawn fiber reinforced plastic. The component of claim 1, wherein the plastic reinforcing member has at least one flat portion. 2. The component of claim 1 wherein the plastic reinforcing member is filled with standard concrete, polymer concrete, or a filled resin system and metal or fiber composite rebar. 14. The component of claim 13, wherein the hollow drawn plastic reinforcement member is filled after tensioning the fiber reinforced plastic reinforcement member. The component of claim 1, wherein the polymer concrete is a large amount of polymer resin, a large amount of lightweight aggregate having a specific gravity smaller than the specific gravity of the resin, and a large amount of heavy aggregate having a specific gravity larger than the specific gravity of the resin. A component containing 17. The component according to claim 16, wherein the polymer resin used in the polymer concrete is polyester, vinyl ester, epoxy, phenol or polyurethane resin, or a combination of these resins. The component according to claim 15, wherein the resin content is 25 to 30% by volume ratio of the polymer concrete. The component of claim 15, wherein the lightweight aggregate has a specific gravity of 0.5 to 0.9. The component of claim 15, wherein the lightweight aggregate content is 20 to 25% by volume ratio of the polymer concrete. The component of claim 15, wherein the lightweight aggregate is a central sphere. 16. The component of claim 15, wherein the weight aggregate content is 40 to 60% by volume ratio of the polymer concrete. The component of claim 15, wherein the heavy aggregate has a specific gravity of 2 to 3.5. 16. The component of claim 15, wherein the heavy aggregate is basalt. 16. The component of claim 15, wherein the resin contains thixotropy for keeping the lightweight aggregate suspended. A method for producing a component composed of polymer concrete,
Producing a partial mold of the outer shape of the component to be produced;
Providing a fiber reinforced plastic member in the mold and tensioning at least one of the fiber reinforced plastic members;
Placing polymer concrete on the fiber reinforced plastic member;
Making the castable material curable to form the component;
Releasing the pretensioned member after the castable material is cured to form the component. 26. The method of claim 25, wherein the fiber reinforced plastic member is polished before the fiber reinforced plastic member is introduced into the mold. 26. The method of claim 25, wherein the fiber reinforced plastic member is coated with a sand and / or gravel interface before the fiber reinforced plastic member is introduced into the mold. 26. The method of claim 25, wherein the fiber reinforced plastic member is placed in a mold and subsequently tensioned so that the polymer concrete is cast onto the fiber reinforced plastic member. 26. The method of claim 25, wherein a fiber reinforced plastic member is placed in the mold after sufficient polymer concrete has been sent into the mold to complete the component, and the fiber reinforced before the polymer concrete is cured. A method wherein at least one of the plastic members is tensioned. 26. The method of claim 25, wherein when the fiber reinforced plastic member is hollow, the hollow fiber reinforced plastic member is filled with concrete, polymer concrete, or a filled resin system and / or metal or reinforced plastic rod. 31. The method of claim 30, wherein the hollow fiber reinforced plastic member is filled after the tensioning is removed and the polymer concrete is cured.

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