CN103924733A - Injection molded steel-tube sea sand recycled concrete member - Google Patents

Injection molded steel-tube sea sand recycled concrete member Download PDF

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Publication number
CN103924733A
CN103924733A CN201410087237.8A CN201410087237A CN103924733A CN 103924733 A CN103924733 A CN 103924733A CN 201410087237 A CN201410087237 A CN 201410087237A CN 103924733 A CN103924733 A CN 103924733A
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China
Prior art keywords
steel pipe
injection moulding
injection molded
regeneration concrete
steel tube
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CN201410087237.8A
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CN103924733B (en
Inventor
唐昀超
冯文贤
宝鼎晶
蔡阳
胡金木
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Guangzhou Urban Investment Housing Construction Engineering Co ltd
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Guangdong University of Technology
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Abstract

The invention relates to an injection molded steel-tube sea sand recycled concrete column which comprises an injection molded steel tube. The injection molded steel tube is filled with sea sand recycled concrete, and two ends of the injection molded steel tube are respectively provided with an end cap. The injection molded steel tube comprises a steel tube and a plastic layer which is arranged on the inner wall of the steel tube. The internal surface of the injection molded steel tube has good elastoplasticity and strength as well as corrosion resistance. According to the invention, sea sand is directly applied in the recycled concrete of the injection molded steel tube, and it is unnecessary to process sea sand. The sea sand recycled concrete is poured into the injection molded steel tube to form the injection molded steel-tube recycled concrete column, and then two ends of the injection molded steel tube are sealed by the use of seal covers with plastic washers. The injection molded steel tube provides tightening force for the recycled concrete such that sea sand and the recycled concrete are tightly combined. In addition, as a corrosion resistant layer inside the injection molded steel tube has good elastoplasticity and strength and has fracture resistance and compressive strength 3.5 times higher than a common steel tube, the corrosion resistant layer can play a role in corrosion prevention and isolation and can be used to make the injection molded steel tube and the recycled concrete to be more tightly combined. Thus, the injection molded steel-tube sea sand recycled concrete column has better functional effects.

Description

A kind of injection moulding steel pipe sea sand recycled concrete component
Technical field
The present invention relates to a kind of injection moulding steel pipe sea sand recycled concrete component, relate in particular to the injection moulding steel pipe sea sand regeneration concrete post of filling out extra large sand regeneration concrete in a kind of.
Background technology
China's industrialization and the also developing stage in an extensive source material and the large consumption of the energy of building manufacturing industry thereof, in process of construction, need a large amount of river sand, also produced a large amount of building castoffs simultaneously, how to utilize discarded concrete, improve its intensity, make renewable resource utilization, substitute river sand with extra large sand simultaneously, and carry out the batch manufacture of industrialized building component, and be the emphasis that people study always, steel tube regeneration concrete column is industry and architectural having a wide range of applications.And because extra large sand is corrosive to steel, often need carry out pre-treatment to extra large sand, reach the requirement of building function.Tradition has been wasted a large amount of human and material resources to the processing method of extra large sand, with high costs.When the untreated original marine sand concrete of employing of the prior art forms steel core concrete column, for steel pipe corrosion-proof, FRP or river sand are set between steel pipe inner wall and extra large sand as separation layer, then fill out extra large sand.Although the method can directly be used extra large sand, special make with FRP structure isolation scheme that various costs are corresponding to be increased, and use river sand isolation scheme, and steel pipe two ends need to first fill and lead up processing with the measured river sand concrete of matter, then steel lid two ends are welded with bonding machine and technician to various complex manufacturing technology, difficult quality control, and easily make a small amount of sea, river sand mix together, and steel pipe is formed to corrosion, this scheme intensity is not high yet.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of injection moulding steel pipe sea sand recycled concrete component.The present invention has effectively utilized extra large sand, regeneration concrete, and fully energy conservation and utilize regenerated resources, can realize the strategic objective of green manufacturing and sustainable development.
Technical scheme of the present invention is: injection moulding steel pipe of the present invention sea sand regeneration concrete post, comprise injection moulding steel pipe, and in described injection moulding steel pipe, be filled with extra large sand regeneration concrete, described injection moulding steel pipe two ends are provided with end cap.
Described injection moulding steel pipe includes steel pipe, plastic layer, and plastic layer is arranged on the inwall of steel pipe.
Described extra large sand regeneration concrete includes extra large sand, river sand, regeneration concrete, ordinary concrete, and extra large sand, river sand, regeneration concrete, ordinary concrete mix.
The invention has the beneficial effects as follows: the present invention is led to and in injection moulding steel pipe, is filled with extra large sand regeneration concrete, and injection moulding steel pipe two ends are provided with end cap, wherein injection moulding steel pipe, end cap can be realized the manufacture of the building component of industrial mass, cost is low, technique can realize standardization and simplification, quality is controlled well, and injection moulding steel pipe internal-surface has good elastoplasticity and intensity, and antiseptic property.Extra large sand is directly applied in the regeneration concrete of injection moulding steel pipe, without extra large sand is processed, extra large sand regeneration concrete is filled into and in described injection moulding steel pipe, forms injection moulding steel tube regeneration concrete column, then to injection moulding steel pipe two ends with the seal cover of plastic washer, steel pipe being sealed.Like this, injection moulding steel pipe, for regeneration concrete provides clamping force, makes to combine closely between extra large sand regeneration concrete on the one hand; On the other hand, anticorrosive coat elastoplasticity and intensity in injection moulding steel pipe are good, and bending and compressive strength is 3.5 times of common steel tube, both can play anticorrosion buffer action, can make again injection moulding steel pipe and regeneration concrete more combine closely, and functional effect is better.The present invention has effectively utilized extra large sand, regeneration concrete, and fully energy conservation and renewable resource utilization realized the strategic objective of green manufacturing and sustainable development.The use of the extra large sand regeneration concrete post of the built-in stiffener of injection moulding steel pipe can directly substitute traditional steel pipe and steel concrete.
Brief description of the drawings
Fig. 1 is the schematic cross-section of injection moulding steel pipe of the present invention sea sand recycled concrete component,
Fig. 2 is injection moulding steel pipe of the present invention and the intention of the seal cover assembly with plastic washer thereof.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is done to further detailed description, but embodiments of the present invention are not limited to this.
Embodiment:
Below in conjunction with accompanying drawing 1 illustrate and detailed description of the invention the present invention is further described.
As shown in Figure 1, illustrate below in conjunction with accompanying drawing 1 and detailed description of the invention the present invention is further described.
As shown in Figure 1, injection moulding steel pipe sea sand regeneration concrete post member, comprises injection moulding steel pipe, is filled with extra large sand regeneration concrete 4 in wherein said injection moulding steel pipe, and described injection moulding steel pipe two ends are provided with end cap 5.
In the present embodiment, described injection moulding steel pipe includes steel pipe 1, plastic layer 2, and plastic layer 2 is arranged on the inwall of steel pipe 1.
In the present embodiment, described end cap 5 is fixed on the two ends of injection moulding steel pipe by screw thread, or end cap 5 is fixed on the two ends of injection moulding steel pipe by connector 6.In the present embodiment, described connector 6 is screw.
For further guaranteeing sealing, described end cap 5 is also equiped with packing ring 7 with the contact surface of injection moulding steel pipe.In the present embodiment, described plastic washer 7 is plastic washer.
In the present embodiment, described extra large sand regeneration concrete 4 includes extra large sand, river sand, regeneration concrete, ordinary concrete, and extra large sand, river sand, regeneration concrete, ordinary concrete mix.The method that the present invention sea sand is directly applied in injection moulding steel tube regeneration concrete component is to make extra large sand regeneration concrete without the chemically treated extra large sand such as desalination and regeneration concrete, and extra large sand regeneration concrete is cast in the injection moulding steel pipe that inside has corrosion-resistant coating.
In the present embodiment, described regeneration concrete refers to discarded concrete block after fragmentation, cleaning, classification, mix with grating by a certain percentage, partly or entirely replace the natural aggregates such as sandstone (being mainly coarse aggregate), then the as placed concrete that adds cement, water etc. to join to form.Wherein, without extra large sand is processed, extra large sand regeneration concrete is filled into and in described injection moulding steel pipe, forms injection moulding steel tube regeneration concrete column.In the present embodiment, adopt 70% regeneration concrete, 30% concrete is comprehensively mixed with new mixed regeneration concrete.
In the present embodiment, for further strengthening the intensity of steel pipe 1, the inwall of described steel pipe 1 is also provided with strengthens steel wire 3.
The outer contour shape of described steel pipe 1 is circle and rectangle.In the present embodiment, the outer contour shape of steel pipe 1 is circular, described steel pipe 1 is placed in instrument, at two places that approach upper and lower end face of the inner surface in steel pipe 1 same cross section, isogonism is installed and is strengthened steel wire 3, in the present embodiment, strengthening steel wire 3 is finer wire, then to steel pipe 1 inner surface to carrying out injection-moulded plastic layer 2, can be in case the plastic layer 2 of the chemical classes corrosion such as salt be injection molding melt and dissolved at steel pipe inner wall, be formed with the plastic layer of steel wire, and form an entirety with steel pipe, it is injection moulding steel pipe, this injection moulding steel pipe cost that can industrialized mass is not high, in improving intensity and plasticity, form a corrosion-resistant coating, can directly in injection moulding steel pipe, be filled with undressed original extra large sand regeneration concrete post.
In addition,, for avoiding the corrosion of extra large sand regeneration concrete 4 to steel pipe 1, described extra large sand regeneration concrete 4 also adds rust protection agent.
The present invention is in the time making; at the short steel wire 3 for reinforced plastics layer structure at the melt and dissolved plastic layer 2 of the inwall injection moulding of steel pipe 1 and close upper and lower position, in the hollow area surrounding at the melt and dissolved plastic layer of injection moulding, be cast with the extra large sand regeneration concrete 4 that original undressed extra large sand is made; At described injection moulding steel pipe two ends, seal cover 8 is set, seal cover 8 is ordinary carbon steel material.
Injection moulding steel pipe of the present invention can be produced in batches as requested in manufacturing works, the about 0.5-1.4mm of plastic layer that steel pipe inner wall injection moulding is melt and dissolved,, steel pipe sizes is D × L × t(diameter × length × thickness), according to functional requirement, can design its physical dimension according to functional requirement.This application, desirable being of a size of=180 × 500 × 6mm, wherein the seal cover assembly that is of a size of (diameter × length) 180mm × 5mm for bottom.
Built-in FRP steel stiffener of the present invention, can produce in batches as requested in manufacturing works.FRP shaped steel stiffener can be arranged on the center of extra large sand regeneration concrete.Improve the stress performance of steel pipe sea sand regeneration concrete.
Make after injection moulding steel pipe, to scene, extra large sand regeneration concrete is directly cast in injection moulding steel pipe.After concrete filled steel tube is poured into a mould, there will be the contraction in the error range of about 2mm left and right, at this moment can adopt mortar to polish after it solidifies, then fitting tight be carried out in injection moulding steel pipe two ends with seal cover assembly.
Injection moulding steel pipe sea sand recycled concrete component is under the effect of axial compression, injection moulding steel pipe provides hoop constraint effect to inner regeneration concrete, make the state of core concrete in multiaspect pressurized, can greatly improve its resistance to compression, rupture strength, raising resistance to corrosion, steel duct is filled regeneration concrete, avoid steel pipe generation unstability, thereby improved the overall mechanical property of member.
A kind of injection moulding steel pipe provided by the invention sea sand recycled concrete component, its advantage is:
1) with the river sand of original extra large sand alternate resources shortage, energy-conservation and economize on resources, cost.
2) adopt regeneration concrete, together with extra large sand, be made into marine sand concrete, energy-conservation and economize on resources, cost.
3) due to the melt and dissolved plastic layer of steel pipe inner wall injection moulding, the uniform finer wire composition that is arranged on plastic layer can improve the effect of plastic layer intensity, and core regeneration concrete is in injection moulding steel pipe, a small amount of chemical analysis in chlorion and the regeneration concrete of extra large sand regeneration concrete etc. is restricted the corrosion of steel pipe, the application of the steel pipe of injection moulding simultaneously, has improved its resistance to compression, rupture strength, raising resistance to corrosion.
In traditional steel pipe, inject undressed original extra large sand and discarded concrete chemical analysis can make the volume expansion of steel pipe corrosion product cause concrete cracking, accelerated the corrosion of steel, cause the reinforced concrete structure will soon be destroyed.Therefore, the plastic layer that inwall injection moulding is melt and dissolved, and finer wire is installed, the laminating intensity of plastic layer and steel improves, and is not easy to and comes off and be out of shape.
4) the assembling seal cover assembly of plastic washer is arranged on steel pipe both ends of the surface and plays strict sealing function.The seal cover modular construction advantage of plastic washer, can be made as standard component, install to on-the-spot, for manufacturing building component provides the advantage of design and manufacture advantage and processing cost in batches, the elasticity of built-in plastic washer and plasticity, play the cushioning effect to pressure distortion to steel shaft on the one hand, play on the other hand antisepsis.Artificial welded seal cap assemblies comparison with traditional, has reduced welding equipment and solder technology personnel, also greatly reduces cost.
What the injection moulding steel pipe of the seal cover assembly of plastic washer was different from ordinary reinforced concrete is, combination seal has been installed at the two ends of the concrete inner concrete in injection moulding steel pipe, in the inner environment in a sealing, corrosion is limited, and the expansion of internal material also can have advantageous effect to the combination between steel pipe and core sea sand regeneration concrete.
5) injection moulding steel pipe sea sand regeneration concrete is widely used, be mainly used in compressed member, as single or multiple lift industrial premises pillar, send power transformation prefabricated units, high level or Super High civilian construction post etc., also can be used as flexural member, as arch rib in highway or Urban Bridge etc.
A kind of injection moulding steel pipe provided by the invention sea sand regeneration concrete is widely used, be mainly used in compressed member, as single or multiple lift industrial premises pillar, send power transformation prefabricated units, high-rise civil building post etc., also can be used as flexural member, as arch rib in highway or Urban Bridge etc.

Claims (8)

1. an injection moulding steel pipe sea sand regeneration concrete post member, comprises injection moulding steel pipe, it is characterized in that being filled with extra large sand regeneration concrete in described injection moulding steel pipe, and described injection moulding steel pipe two ends are provided with end cap.
2. according to the injection moulding steel pipe sea sand regeneration concrete post member described in claim 1, it is characterized in that: described injection moulding steel pipe includes steel pipe, plastic layer, and plastic layer is arranged on the inwall of steel pipe.
3. according to the injection moulding steel pipe sea sand regeneration concrete post member described in claim 1, it is characterized in that described end cap is fixed on the two ends of injection moulding steel pipe by screw thread, or end cap is fixed on the two ends of injection moulding steel pipe by connector.
4. according to the injection moulding steel pipe sea sand regeneration concrete post member described in claim 1, it is characterized in that the contact surface of described end cap and injection moulding steel pipe is also equiped with packing ring.
5. according to the injection moulding steel pipe sea sand regeneration concrete post member described in claim 1, it is characterized in that: the inwall of described steel pipe 1 is also provided with reinforcement steel wire.
6. according to the injection moulding steel pipe sea sand regeneration concrete post member described in claim 1 to 5 any one, it is characterized in that described extra large sand regeneration concrete includes extra large sand, river sand, regeneration concrete, ordinary concrete, extra large sand, river sand, regeneration concrete, ordinary concrete mix.
7. according to the injection moulding steel pipe sea sand regeneration concrete post member described in claim 6, it is characterized in that: the outer contour shape of described steel pipe is circle and rectangle.
8. injection moulding steel pipe sea sand regeneration concrete post member according to claim 6, is characterized in that described extra large sand regeneration concrete also adds and has rust protection agent.
CN201410087237.8A 2014-03-11 2014-03-11 A kind of injection steel pipe sea sand recycled concrete component Active CN103924733B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763094A (en) * 2015-04-03 2015-07-08 山东科技大学 Sea sand recycled concrete member for hollow double-skin steel pipe
CN107514095A (en) * 2017-09-21 2017-12-26 华侨大学 A kind of steel PVC multiple tubes marine sand concrete coupled column

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201649285U (en) * 2010-02-02 2010-11-24 哈尔滨工业大学深圳研究生院 FRP sectional steel sea-sand concrete component
CN202370171U (en) * 2011-08-05 2012-08-08 哈尔滨工业大学深圳研究生院 Steel pipe concrete column filled with marine sand concrete
CN103388377A (en) * 2013-08-07 2013-11-13 清华大学 Novel FRP (fiber reinforced plastic)-steel tube-epoxy resin-sea sand concrete compression member
CN203905295U (en) * 2014-03-11 2014-10-29 广东工业大学 Sea-sand recycled concrete component provided with injection-molded steel pipe

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
CN201649285U (en) * 2010-02-02 2010-11-24 哈尔滨工业大学深圳研究生院 FRP sectional steel sea-sand concrete component
CN202370171U (en) * 2011-08-05 2012-08-08 哈尔滨工业大学深圳研究生院 Steel pipe concrete column filled with marine sand concrete
CN103388377A (en) * 2013-08-07 2013-11-13 清华大学 Novel FRP (fiber reinforced plastic)-steel tube-epoxy resin-sea sand concrete compression member
CN203905295U (en) * 2014-03-11 2014-10-29 广东工业大学 Sea-sand recycled concrete component provided with injection-molded steel pipe

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763094A (en) * 2015-04-03 2015-07-08 山东科技大学 Sea sand recycled concrete member for hollow double-skin steel pipe
CN107514095A (en) * 2017-09-21 2017-12-26 华侨大学 A kind of steel PVC multiple tubes marine sand concrete coupled column

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Address after: 510280 9/F, 2/F, 1/2, No. 2, Ligang Road, Haizhu District, Guangzhou City, Guangdong Province

Patentee after: Guangzhou Urban Investment Housing Construction Engineering Co.,Ltd.

Address before: 510006 No. 100 West Ring Road, Guangzhou University, Guangzhou, Guangdong, Panyu District

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