CN111908867A - Seawater sea sand ultrahigh-performance concrete beam mixed with FRP rib waste rubber - Google Patents
Seawater sea sand ultrahigh-performance concrete beam mixed with FRP rib waste rubber Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
- E04C3/20—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of concrete or other stone-like material, e.g. with reinforcements or tensioning members
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/07—Reinforcing elements of material other than metal, e.g. of glass, of plastics, or not exclusively made of metal
- E04C5/073—Discrete reinforcing elements, e.g. fibres
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
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Abstract
The invention discloses a seawater sea sand ultrahigh-performance concrete beam mixed with FRP (fiber reinforced Plastic) ribs and waste rubber, which comprises sea sand concrete mixed with FRP ribs and waste rubber, wherein the concrete component comprises waste rubber particles, seawater, sea sand, broken stone, a water reducing agent, fly ash and silica fume. The beneficial effects of the invention include: the waste rubber is made into particles and mixed in the concrete for preparing the structural member, so that the industrial waste is recycled, the sea sand in the raw material is rich in resources and easy to obtain, the engineering cost is reduced, the energy is saved, and the production cost is reduced; compared with the prior art, the waste rubber FRP rib seawater sea sand ultrahigh-performance concrete beam prepared by the technical scheme of the invention has the advantages of better crack resistance, shock resistance, compression resistance, fracture resistance, permeability resistance, corrosion resistance, shock resistance and wear resistance, higher deformability, stronger sound insulation performance and light dead weight; the FRP ribs are used for replacing the reinforcing steel bars, so that the problem of member corrosion caused by corrosion of seawater and sea sand to the reinforcing steel bars is solved.
Description
Technical Field
The invention relates to the field of structural engineering, in particular to a seawater sea sand ultrahigh-performance concrete beam mixed with FRP rib waste rubber.
Background
Along with the development of urbanization in China, the scales of various building projects are continuously enlarged, the use of a large amount of concrete and the demand of larger and larger building sand are caused, and the state that river sand is in short supply even appears in some areas. Then, sea sand resources are developed and utilized as alternative resources in a large quantity, but if the sea sand with high content of chloride ions is directly used in concrete without treatment, the corrosion of reinforcing steel bars is very easy to cause, thereby damaging the structure of the concrete and causing the phenomenon of 'sea sand house'.
In order to increase the use amount of the sea sand and prepare the building material which can be corroded by the sea sand and meets the use requirement, the technical scheme adopted in the prior art mainly comprises two aspects: firstly, other materials are used for replacing steel materials in reinforced concrete, and secondly, desalination treatment is carried out before sea sand is used. The substitute material adopted by the former needs to be in accordance with the sexual function of the steel bar, can generate positive effect on the performance of the reinforced concrete, and usually needs to use several different composite materials with different performances; the latter desalination treatment of sea sand increases the fresh water consumption undoubtedly, and the river sand resource is saved while the waste of fresh water resources is caused. However, FRP seawater sea sand concrete has the defects of large deflection, poor ductility and the like.
The invention patent with the application number of CN201911212629.1 discloses an FRP rib part steel fiber reinforced concrete beam and a preparation method thereof, wherein the FRP rib part steel fiber reinforced concrete beam comprises: the composite reinforcement cage comprises a composite reinforcement cage consisting of partial FRP reinforcements and partial reinforcements, common concrete filled and poured in a tension area at the lower part of the composite reinforcement cage, and steel fiber concrete filled and poured in a compression area at the upper part of the composite reinforcement cage, wherein the common concrete completely wraps the tension area at the lower part of the composite reinforcement cage, and the steel fiber concrete completely wraps the compression area at the upper part of the composite reinforcement cage. The FRP rib part steel fiber reinforced concrete beam prepared by the method has simple structure and low preparation cost, can improve the ultimate compressive strain of the concrete at the edge of the stressed area of the beam and the ultimate bearing capacity and ductility of the beam, and can fully exert and utilize the reinforcing and toughening effects of FRP and steel fiber; the invention uses part of FPR bars to replace part of reinforcing steel bars, thus overcoming the saline degradation and deterioration of the reinforced concrete caused by sea sand.
The invention patent with the application number of CN201910042974.9 discloses a carbon fiber sea sand high-performance concrete material and a preparation method thereof, the invention adopts carbon fibers to replace reinforcing steel bars, thereby avoiding the saline degradation and the deterioration of reinforced concrete, reducing the weight of building components, facilitating the installation and construction and shortening the construction period; meanwhile, the carbon fiber has the vibration damping characteristic and can absorb vibration waves, so that the anti-seismic capacity and the bending strength of the concrete material are improved by tens of times. However, although the carbon fiber material has the advantages of light weight, high strength and the like, the carbon fiber material belongs to a brittle material, and can be directly broken if being stressed too much, so that the carbon fiber material cannot be repaired after being damaged, and great potential safety hazards can be brought if the carbon fiber material is accumulated for a long time.
Disclosure of Invention
The invention aims to solve the technical problems and provides the waste rubber mixed FRP rib seawater sea sand ultrahigh-performance concrete beam which is simple in preparation process, lower in preparation cost and better in performance.
The technical scheme adopted by the invention is as follows:
the seawater sea sand ultrahigh-performance concrete beam formed by blending FRP ribs and waste rubber comprises 1.25-3% of rubber particles, 15-20% of cement, 7-10% of seawater, 25-30% of sea sand, 45-50% of broken stone, 0.1-0.2% of a water reducing agent, 0-5% of fly ash and 1-2% of silica fume according to the percentage content of raw materials; the FRP ribs comprise FRP rib materials 2, FRP sectional materials and FRP spiral stirrups; the FRP profile is arranged in a tension area of the concrete beam, the FRP ribs are arranged in a compression area of the concrete beam, and the FRP spiral stirrups wrap the FRP ribs and the FRP profile.
The research of the inventor finds that the rubber particles formed by crushing and cleaning the waste tires can replace part of natural sand grains to be mixed into the sea sand concrete, and the ductility and the impact resistance of the sea sand concrete can be enhanced. So both can retrieve the recycle to abandonment rubber, can improve the performance of sea sand concrete again.
In the technical scheme of the invention, the FRP rib is formed by extruding and drawing a special die after a plurality of strands of continuous fibers such as glass fibers, carbon fibers and the like are glued by base materials (such as polyamide resin, polyethylene resin, epoxy resin and the like). The material has the advantages of light weight, high tensile strength, strong corrosion resistance, strong material binding force, strong magnetic wave transmission performance and the like.
The high-performance concrete beam prepared by using the sea sand concrete mixed with the FRP ribs and the waste rubber can be directly mixed by using sea water without desalting the sea sand. The rubber material can absorb sound waves, slow down heat loss and endow the FRP rib waste rubber mixed seawater sea sand ultrahigh-performance concrete beam with better sound insulation and heat preservation performance.
According to the technical scheme, the continuous rectangular FRP spiral stirrups are arranged at a certain interval along the longitudinal axis direction of the concrete beam, so that the requirements of construction structures can be met, the stress bars and the erection bars at the longitudinal corners are fixed by the continuous rectangular FRP spiral stirrups, large deviation caused by disturbance force generated by pouring and tamping concrete during construction can be reduced, and shearing force generated under the action of external load can be borne.
Preferably, the cement is P.O 42.5.5 ordinary portland concrete, and the fly ash is class i fly ash.
Preferably, the rubber is mainly waste tires and rubber products, is produced by crushing at normal temperature, and has the particle size of 2-4 mm.
Preferably, the FRP ribs are one or more of carbon fiber reinforced composite materials, glass fiber reinforced composite materials, aramid fiber reinforced composite materials or basalt fiber reinforced composite materials.
Preferably, the FRP helical stirrups are one or more of common FRP rectangular stirrups or rectangular FRP helical stirrups.
Preferably, the rectangular FRP helical stirrup is a symmetrical rectangular FRP helical stirrup or an antisymmetric rectangular FRP helical stirrup.
The rectangular spiral FRP stirrup concrete beam can improve the shear-resistant bearing capacity of the oblique section, can effectively inhibit the development of oblique cracks, and can save the working hours and the using amount of the rectangular spiral FRP stirrups.
Preferably, the FRP profiles are arranged in a groove shape.
The invention has the following beneficial effects:
(1) compared with the prior art, the sea sand concrete is blended by using the waste rubber, so that the deformation capacity of the sea sand concrete is enhanced, the ductility of the sea sand concrete is improved, and the binding force between the concrete and a cement matrix is enhanced; meanwhile, the doping of the waste rubber reduces the stress concentration phenomenon at the crack tip of the prepared FRP rib seawater sea sand UHPC beam mixed with the waste rubber, delays the generation and development of cracks and improves the anti-cracking performance of the beam; the groove-shaped FRP sectional material is arranged in the tension area, so that the rigidity and the strength of the beam are improved, and the defect of large bending deflection of the tension area due to the adoption of FRP ribs is overcome; the corrosion problem caused by using the steel bars is avoided, and the durability of the beam is improved.
(2) The FRP ribs, the rubber material fiber material and the rubber have great damping, can prevent structural vibration and deformation, have great hysteresis performance, and can absorb a large amount of seismic energy, so that the manufactured beam has better seismic performance.
(3) The invention improves the folding resistance, permeability resistance, corrosion resistance, impact resistance and wear resistance of the seawater sea sand concrete.
(4) The invention fully utilizes industrial waste (waste rubber), saves resources, is green and environment-friendly, fully utilizes resources which cannot be developed and used, is convenient for local materials, has low manufacturing cost, is convenient for construction, can be directly constructed on site by the fiber material framework, and has simple operation.
Drawings
FIG. 1 is a cross-sectional view of a seawater sea sand ultra-high performance concrete beam blended with FRP rib waste rubber;
FIG. 2 is a side view of a seawater sea sand ultra-high performance concrete beam mixed with FRP rib waste rubber;
FIG. 3 is a perspective view of a seawater sea sand ultra-high performance concrete beam blended with FRP rib waste rubber;
wherein, 1 is the sea sand concrete that abandonment rubber mixes, 2 is FRP muscle material, 3 is FRP spiral stirrup, and 4 is FRP section bar.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
An FRP rib waste rubber blended seawater sea sand ultra-high performance concrete (UHPC) beam, hereinafter referred to as FRP rib waste rubber blended sea sand concrete UHPC beam, fig. 1 is a cross-sectional view of an FRP rib waste rubber blended seawater sea sand ultra-high performance concrete beam, as shown in fig. 1, comprising an FRP rib and waste rubber blended sea sand concrete 1, wherein the waste rubber blended sea sand concrete 1 comprises the following raw materials in percentage: 1.25-3 parts of rubber particles, 15-20 parts of cement, 7-10 parts of seawater, 25-30 parts of sea sand, 45-50 parts of broken stone, 0.1-0.2 part of a water reducing agent, 0-5 parts of fly ash and 1-2 parts of silica fume; the FRP ribs comprise FRP rib materials 2, FRP profiles 4 and FRP spiral stirrups 3; the FRP section 4 is arranged in a tension area of the waste rubber FRP rib seawater sea sand UHPC beam, the FRP rib is arranged in a compression area of the waste rubber FRP rib seawater sea sand UHPC beam, and the FRP spiral stirrup 3 wraps the FRP rib 2 and the FRP section.
The cement is P.O 42.5.5 ordinary portland concrete, and the fly ash is class I fly ash.
The rubber is mainly waste tires and rubber products, is produced by crushing at normal temperature, and has the particle size of 2-4 mm.
The FRP ribs are one or more of carbon fiber reinforced composite materials, glass fiber reinforced composite materials, aramid fiber reinforced composite materials or basalt fiber reinforced composite materials.
The FRP spiral stirrup 3 is one or more of a common FRP rectangular stirrup or a rectangular FRP spiral stirrup.
The rectangular FRP spiral stirrup is a symmetrical rectangular FRP spiral stirrup or an antisymmetric rectangular FRP spiral stirrup.
The FRP section 4 is arranged into a groove shape.
The rubber particles are made from waste tires and are obtained by sterilizing, crushing, removing impurities, screening and the like the recovered waste tires.
Example 1
The preparation method of the FRP rib sea waste rubber blended sea sand concrete UHPC beam comprises the following steps:
s1: weighing 36kg of cement, 18kg of seawater, 45kg of sea sand, 81kg of broken stone, 5kg of rubber particles, 0.5kg of water reducing agent, 9kg of fly ash and 5kg of silica fume;
s2 preparation of waste rubber blended sea sand concrete: in order to prevent the rubber particles from being unevenly distributed and from being agglomerated, the cement, the sea sand, the rubber particles, the silica fume, the fly ash and the water reducing agent are poured into a stirrer to be stirred for 120 s, then the crushed stone is added to be continuously stirred for 60 s, finally, seawater is added to be stirred for 120 s, and then the materials are discharged. The particle size of the rubber is 2-4 mm.
S3 preparation of the UHPC beam made of the FRP rib sea waste rubber mixed with the sea sand concrete: the FRP rectangular spiral stirrup is prefabricated in a factory and wound on two symmetrical sides. The FRP rectangular spiral stirrup is wrapped and arranged outside the FRP rib material 2 and the groove-shaped FRP section material 4, and the FRP rib material 2 and the groove-shaped FRP section material 4 are bound on the FRP rectangular spiral stirrup through a nylon binding belt to form a framework structure. And pouring the waste rubber blended sea sand concrete in a mould, and curing for 28 days to obtain the FRP rib sea waste rubber blended sea sand concrete UHPC beam.
According to DL/T5332-2005, the fracture toughness of a rubber concrete beam test piece with a kerf is tested by adopting a three-point bending beam method, three test components with the sizes of 200 mm multiplied by 120 mm multiplied by 1000 mm, the span of 800 mm, the length of a prefabricated crack of 80 mm, the loading force rate of 100N/s are respectively numbered A1, A2 and A3 are manufactured.
Example 2
Compared with example 1, the difference of this example is that sea sand is weighed to 50kg, no rubber particles are added, and other components and operation steps are the same as those described in example 1.
The three test members obtained according to the method described in example 1 were numbered B1, B2 and B3, respectively.
The results of testing the fracture toughness of the UHPC beam made from the FRP bar and sea waste rubber blended sea sand concrete prepared in example 1 and example 2 are shown in Table 1.
TABLE 1 fracture toughness test result data table of FRP rib sea waste rubber blended sea sand concrete UHPC beam
As can be calculated from Table 1, the average value of the fracture toughness of the test member of example 1 was 1.202 MPa · m1/2The average value of the fracture toughness of the test member of example 2 was 1.118 MPa · m1/2The fracture toughness of the UHPC beam prepared by blending the FRP rib and the sea waste rubber with the sea sand concrete is higher than that of the beam without the doped waste rubber.
Example 3
The preparation method of the FRP rib sea waste rubber blended sea sand concrete comprises the following steps:
s1: weighing 12kg of cement, 6kg of seawater, 15kg of sea sand, 27kg of broken stone, 1.7kg of rubber particles, 0.17kg of water reducing agent, 3kg of fly ash and 1.7kg of silica fume.
S2 preparation of waste rubber blended sea sand concrete: in order to prevent the rubber particles from being unevenly distributed and from being agglomerated, the cement, the sea sand, the rubber particles, the silica fume, the fly ash and the water reducing agent are poured into a stirrer to be stirred for 120 s, then the crushed stone is added to be continuously stirred for 60 s, and finally the sea water is added to be stirred for 120 s and then the mixture is discharged. The particle size of the rubber is 2-4 mm.
According to GB/T50082-2009, the test is carried out by adopting a quick freezing method. And (3) curing the waste rubber mixed with the sea sand concrete test member for 24 days, taking out, soaking in water at the temperature of (20 +/-2) DEG for 4 days, wherein the liquid level is 3-4 cm higher than the top surface of the test member during soaking, and starting a freeze-thaw test after soaking. The number of the test components is 3, the test components are numbered as C1, C2 and C3, 18 test pieces with the size of 100mm multiplied by 400 mm are respectively prepared from each numbered test component, and the average value of the 18 test pieces is taken as the quality loss rate test result value corresponding to each numbered test component. The number of test members for testing the compressive strength of the waste rubber blended sea sand concrete after freeze-thaw cycling is also 3, the test members are numbered as C1', C2' and C3', 6 test members with the size of 150mm multiplied by 150mm are respectively prepared for each numbered test member, and the numerical value of the compressive strength test result corresponding to each numbered test member is the average value of the 6 test members.
Example 4
This example is compared with example 3, except that the sea sand taken out was 16.7kg in mass and no rubber particles were added. The test member numbers of the test member numbers D1, D2 and D3 for testing the mass loss rate of the waste rubber blended sea sand concrete; test members for testing the compressive strength of the waste rubber blended sea sand concrete after freeze-thaw cycles are numbered as D1', D2' and D3 '; the test method and the requirements of the test piece were the same as in example 3.
The results of the mass loss rate test after freeze-thaw cycles of the waste rubber blended sea sand concrete prepared in example 3 and example 4 are shown in table 2; the relative compressive strengths of the waste rubber blended sea sand concrete prepared in examples 3 and 4 after freeze-thaw cycles are shown in table 3.
Table 2 table of mass loss (%) after freeze-thaw cycle of the waste rubber blended sea sand concrete test member
TABLE 3 data sheet of relative compressive strength test results of waste rubber blended with sea sand concrete test member after freeze-thaw cycle
From table 2, it can be seen that the mass loss rate value of the waste rubber-doped sea sand concrete test member after freeze-thaw cycling is smaller than the mass loss rate value of the waste rubber-undoped sea sand concrete test member after freeze-thaw cycling; it can be seen from table 3 that the relative compressive strength of the waste rubber blended sea sand concrete test member after the freeze-thaw cycle is greater than the relative compressive strength of the waste rubber undoped sea sand concrete test member after the freeze-thaw cycle.
Example 5
The preparation method of the FRP rib sea waste rubber blended sea sand concrete comprises the following steps:
s1: weighing 6kg of cement, 3kg of seawater, 7.5kg of sea sand, 13.5kg of broken stone, 0.85kg of rubber particles, 0.085kg of water reducing agent, 1.5kg of fly ash and 0.85kg of silica fume.
S2 preparation of waste rubber blended sea sand concrete: pouring cement, sea sand, rubber particles, silica fume, fly ash and a water reducing agent into a stirrer, stirring for 120 s, adding broken stone, continuously stirring for 60 s, adding seawater, stirring for 120 s, and discharging. The particle size of the rubber is 2-4 mm.
Waste rubber was blended with sea sand concrete to prepare a cube of 150mm × 150mm × 150mm, and 3 test pieces were prepared, and assigned numbers of E1, E2, and E3. And (3) taking out the test block after standard maintenance for 27 days, naturally drying the test block after wiping the surface moisture, putting the test block into a supply box at the temperature of 60 +/-5 ℃ for drying for 12 hours until the weight is constant, and then clamping the test block on a concrete abrasion machine with a flower-wheel grinding head by using a claw clamp. Grinding under load, taking off the test specimen, brushing the surface, weighing the dust, and recording the corresponding mass m1The mass is taken as the initial mass m of the test piece2Then, the test piece was ground under a load of 200N for 60 revolutions, then the dust on the surface of the test piece was removed and weighed, and the remaining mass was recorded, and the amount of wear of each test member was calculated as the amount of wear G per unit area according to the following formulacTo indicate that the user is not in a normal position,
example 6
This example is compared with example 5, except that the sea sand weighed was 8.35kg in mass, and no rubber particles were added. 3 test pieces were made, numbered F1, F2, F3, respectively.
The results of the abrasion loss test of the waste rubber-blended sea sand concrete obtained in example 5 and example 6 are shown in Table 4. It can be seen from table 4 that the abrasion loss of the waste rubber-blended sea sand concrete is less than that of the non-blended sea sand concrete, i.e. the abrasion resistance of the waste rubber-blended sea sand concrete is better than that of the non-blended sea sand concrete.
TABLE 4 abrasion table for abrasion loss test results of waste rubber blended with sea sand concrete
The above-described preferred embodiments of the present invention are not intended to limit the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a FRP muscle waste rubber mixed sea water sea sand ultra high performance concrete beam which characterized in that: the waste rubber blended sea sand concrete comprises, by mass, 1.25-3 parts of rubber particles, 15-20 parts of cement, 7-10 parts of seawater, 25-30 parts of sea sand, 45-50 parts of crushed stone, 0.1-0.2 part of a water reducing agent, 0-5 parts of fly ash and 1-2 parts of silica fume; the FRP ribs comprise FRP rib materials, FRP sectional materials and FRP spiral stirrups; the FRP profile is arranged in a tension area of the concrete beam, the FRP ribs are arranged in a compression area of the concrete beam, and the FRP spiral stirrups wrap the FRP ribs and the FRP profile.
2. The FRP rib waste rubber blended seawater sea sand ultra-high performance concrete beam as claimed in claim 1, wherein: the cement is P.O 42.5.5 ordinary portland concrete, and the fly ash is class I fly ash.
3. The FRP rib waste rubber blended seawater sea sand ultra-high performance concrete beam as claimed in claim 1, wherein: the rubber is mainly waste tires and rubber products, is produced by crushing at normal temperature, and has the particle size of 2-4 mm.
4. The FRP rib waste rubber blended seawater sea sand ultra-high performance concrete beam as claimed in claim 1, wherein: the FRP ribs are one or more of carbon fiber reinforced composite materials, glass fiber reinforced composite materials, aramid fiber reinforced composite materials or basalt fiber reinforced composite materials.
5. The FRP rib waste rubber blended seawater sea sand ultra-high performance concrete beam as claimed in claim 1, wherein: the FRP spiral stirrup is one or more of a common FRP rectangular stirrup or a rectangular FRP spiral stirrup.
6. The FRP rib waste rubber blended seawater sea sand ultra-high performance concrete beam as claimed in claim 1, wherein: the rectangular FRP spiral stirrup is a symmetrical rectangular FRP spiral stirrup or an antisymmetric rectangular FRP spiral stirrup.
7. The FRP rib waste rubber blended seawater sea sand ultra-high performance concrete beam as claimed in claim 1, wherein: the FRP section bar is arranged into a groove shape.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021617A (en) * | 2021-04-01 | 2021-06-25 | 哈尔滨工业大学 | Considering CO2Method for long-term cooperative work of solidified seawater sea sand concrete and FRP (fiber reinforced plastic) bars |
| CN113958347A (en) * | 2021-08-30 | 2022-01-21 | 新疆大学 | Method for constructing roadside support body by FRP (fiber reinforced plastic) constraint sand-based cementing material column |
| CN115012581A (en) * | 2022-06-08 | 2022-09-06 | 商丘师范学院 | Fiber reinforced composite material reinforced concrete beam member and preparation method thereof |
| CN116290561A (en) * | 2023-02-13 | 2023-06-23 | 广州大学 | FRP rib modified rubber concrete beam and construction method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665246B1 (en) * | 2004-09-10 | 2007-01-09 | 홍원기 | Precast concrete connection structure using Fiber Reinforced Plastics construction |
| CN201649438U (en) * | 2010-02-02 | 2010-11-24 | 哈尔滨工业大学深圳研究生院 | FRP sea sand concrete beam slab |
| CN107035071A (en) * | 2017-04-28 | 2017-08-11 | 广东工业大学 | A kind of marine sand concrete core rubber concrete post |
| CN207144306U (en) * | 2017-04-27 | 2018-03-27 | 广东工业大学 | The marine sand concrete beam of FRP steel composite reinforcing and FRP tendons hybrid reinforcement |
| CN110318495A (en) * | 2019-07-10 | 2019-10-11 | 中国矿业大学 | One kind can assembled permanent formwork overlapping FRP tendons seawater sea sand Recycled Concrete Beams and preparation method thereof |
-
2020
- 2020-08-06 CN CN202010782796.6A patent/CN111908867A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100665246B1 (en) * | 2004-09-10 | 2007-01-09 | 홍원기 | Precast concrete connection structure using Fiber Reinforced Plastics construction |
| CN201649438U (en) * | 2010-02-02 | 2010-11-24 | 哈尔滨工业大学深圳研究生院 | FRP sea sand concrete beam slab |
| CN207144306U (en) * | 2017-04-27 | 2018-03-27 | 广东工业大学 | The marine sand concrete beam of FRP steel composite reinforcing and FRP tendons hybrid reinforcement |
| CN107035071A (en) * | 2017-04-28 | 2017-08-11 | 广东工业大学 | A kind of marine sand concrete core rubber concrete post |
| CN110318495A (en) * | 2019-07-10 | 2019-10-11 | 中国矿业大学 | One kind can assembled permanent formwork overlapping FRP tendons seawater sea sand Recycled Concrete Beams and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王菲: "FRP筋橡胶集料混凝土梁受弯性能试验研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
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| CN113021617A (en) * | 2021-04-01 | 2021-06-25 | 哈尔滨工业大学 | Considering CO2Method for long-term cooperative work of solidified seawater sea sand concrete and FRP (fiber reinforced plastic) bars |
| CN113021617B (en) * | 2021-04-01 | 2021-11-09 | 哈尔滨工业大学 | Considering CO2Method for long-term cooperative work of solidified seawater sea sand concrete and FRP (fiber reinforced plastic) bars |
| CN113958347A (en) * | 2021-08-30 | 2022-01-21 | 新疆大学 | Method for constructing roadside support body by FRP (fiber reinforced plastic) constraint sand-based cementing material column |
| CN113958347B (en) * | 2021-08-30 | 2023-09-01 | 新疆大学 | Method for constructing roadside support body by FRP constraint sand-based cementing material column |
| CN115012581A (en) * | 2022-06-08 | 2022-09-06 | 商丘师范学院 | Fiber reinforced composite material reinforced concrete beam member and preparation method thereof |
| CN116290561A (en) * | 2023-02-13 | 2023-06-23 | 广州大学 | FRP rib modified rubber concrete beam and construction method thereof |
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