CN105804321A - Steel pipe gypsum mortar and waste concrete combined column and preparation method thereof - Google Patents
Steel pipe gypsum mortar and waste concrete combined column and preparation method thereof Download PDFInfo
- Publication number
- CN105804321A CN105804321A CN201610312862.7A CN201610312862A CN105804321A CN 105804321 A CN105804321 A CN 105804321A CN 201610312862 A CN201610312862 A CN 201610312862A CN 105804321 A CN105804321 A CN 105804321A
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- steel pipe
- gypsum mortar
- steel
- mortar
- gypsum
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
The invention discloses a steel pipe gypsum mortar and waste concrete combined column. The steel pipe gypsum mortar and waste concrete combined column is characterized by comprising a steel pipe, and gypsum mortar and a waste concrete block which are filled into the steel pipe, wherein the two ends of the steel pipe are sealed by end plates; a plurality of tamping holes are arrayed on a side wall of the steel pipe; a plurality of longitudinal steel bars are uniformly distributed in the circumference of the inner wall of the steel pipe. The invention further discloses a method for preparing the steel pipe gypsum mortar and waste concrete combined column. The steel pipe gypsum mortar and waste concrete combined column prepared by the invention has the characteristics of rapid hardening and early strengthening, and can rapidly reach a bearing capability; the strength of a member is mainly provided by a waste concrete block framework, so that the material cost can be reduced; furthermore, the gypsum mortar is only used as a cementing material and a joint filling material, and the outer part is restrained by the steel pipe, so that the determination of a weak interface between the gypsum mortar and the waste concrete block can be weakened, and the strength and ductility of the member are greatly improved.
Description
Technical field
The present invention relates to a kind of steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof.
Background technology
Along with the high speed development of building industry, villages and small towns pull down and remove a building for reconstruction with repair, the continually developing and scale construction and public utility newly-built of Urban New District and residential quarters, all can produce substantial amounts of building waste.Additionally, China's part building structure is about to arrive design life.According to statistics, the annual projects of China accounts for the 40% of construction project total amount, and the quantity that the projects of every ten thousand square metres can produce building waste is 7000 tons-12000 tons.Not only will can solve natural aggregate resource anxiety problem after construction waste crushing as regenerated aggregate, it is achieved concrete regeneration with recycle, it is ensured that the sustainable development of building industry.Both at home and abroad regeneration concrete performance is done substantial amounts of experimental study, it was shown that regeneration concrete properties is good, it is possible in building for Practical Project.Current discarded concrete coupled column is typically all in steel pipe and fills the material such as waste concrete block, cement, coal ash, and this coupled column exists the rate of set shortcomings such as intensity is not good enough slowly, in the early time, and packing material and steel pipe is poor in conjunction with dynamics.
Summary of the invention
In view of the deficiency of background technology, the technical problem to be solved is to provide a kind of fast hard, early strong, ductility is good and cost is low steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof.
For this, the present invention adopts the following technical scheme that and realizes:
A kind of steel pipe gypsum mortar discarded concrete coupled column, including steel pipe with the gypsum mortar being filled in steel pipe and waste concrete block, described steel pipe two ends are sealed by end plate.
Described gypsum mortar is made up of water, Gypsum Fibrosum and sand.
Also added with retarder in described gypsum mortar.
The maximum gauge of described waste concrete block is the 1/4-1/3 of diameter of steel tube, and the minimum diameter of waste concrete block is 20-30mm.
The ratio of described water, Gypsum Fibrosum and sand is 0.3:1:1-0.5:1:1.
Described retarder is citric acid.
Present invention also offers a kind of method preparing above-mentioned steel pipe gypsum mortar discarded concrete coupled column, comprise the following steps:
(1) one end plate of steel pipe bottom welding is sealed, in steel pipe, then fill the gypsum mortar of thickness between the 1/2-1 of diameter of steel tube, as needed in the retarder adding certain metering in gypsum mortar, for regulating the flocculation time of gypsum mortar；
(2) in steel pipe, discarded solidifying soil block and/or rubble and/or cobble and filler plaster mortar are alternately thrown；
(3) after gypsum mortar condenses, in steel pipe top welded end plate.
After adopting technique scheme, the intensity of coupled column is mainly provided by discarded slow setting soil block, gypsum mortar is used only as Binder Materials and pointing, gypsum mortar build latter 20-30 minute namely plastic, its intensity can arrive 20-60MPa, have fast hard, early strong feature, and the intensity of component mainly has discarded slow setting soil block skeleton to provide, , gypsum mortar is used only as Binder Materials and pointing, the outside constraint also having steel pipe, the determination that the interface between gypsum mortar and waste concrete block is weak can be weakened, not only can greatly improve intensity and the ductility of component, but also material cost can be reduced.
Accompanying drawing explanation
The present invention has drawings described below:
Fig. 1 is the structural representation of steel pipe gypsum mortar discarded concrete coupled column provided by the invention.
Detailed description of the invention
With reference to shown in Fig. 1, steel pipe gypsum mortar discarded concrete coupled column provided by the invention includes steel pipe 1 and the gypsum mortar 2 being filled in steel pipe 1 and waste concrete block 3, steel pipe 1 two ends are sealed by end plate, gypsum mortar 2 is by water, Gypsum Fibrosum and sand composition, water, the ratio of Gypsum Fibrosum and sand is 0.3:1:1-0.5:1:1, mixing water amount is more big, intensity is more low, mobility is more good, also added with retarder in gypsum mortar 2, retarder is citric acid, for regulating the flocculation time of gypsum mortar 2, the maximum gauge of waste concrete block 3 is the 1/4-1/3 of steel pipe 1 diameter, the minimum diameter of waste concrete block 3 is 20-30mm.
With reference to shown in Fig. 1, in order to increase structural strength, described steel pipe sidewall being placed with multipair transverse steel jack 4 along short transverse, transverse steel 5 inserts in transverse steel jack 4 through steel pipe 1 and two ends, and described transverse steel 5 is welded and fixed with steel pipe 1 wall.In view of the volume of waste concrete block 3 is bigger, if adopting common reinforcement cage structure cannot obtain enough bearing spaces in steel pipe 1, therefore adopt the structure that transverse steel 5 inserts transverse steel jack 4 to contribute to being combined reinforcing bar with coupled column inner core, improve intensity.
Present invention also offers a kind of method preparing steel pipe gypsum mortar discarded concrete coupled column, comprise the following steps:
(1) one end plate of steel pipe 1 bottom welding is sealed, in steel pipe, then fill the gypsum mortar 2 of thickness between the 1/2-1 of diameter of steel tube, as needed in the retarder adding certain metering in gypsum mortar 2, for regulating the flocculation time of gypsum mortar 2；
(2) in steel pipe, discarded solidifying soil block 3 and/or rubble and/or cobble and filler plaster mortar are alternately thrown；
(3) after gypsum mortar 2 condenses, at steel pipe 1 welded top end plate.
In above-mentioned steps (2), throw in steel pipe 1 and the process of discarded solidifying soil block 3 and/or rubble and/or cobble and filler plaster mortar often arrives a pair i.e. insertion transverse steel 5 in transverse steel jack 4 in transverse steel jack 4 position, and by outside steel pipe 1, transverse steel 5 is welded on steel pipe 1 wall.The transverse steel inserted mode that the present embodiment provides can avoid transverse steel 5 to contact with the waste concrete block 3 bigger aggregate of equal-volume, it is to avoid affects the loading of large volume aggregate, promotes the bulk strength of coupled column simultaneously.
Claims (9)
1. a steel pipe gypsum mortar discarded concrete coupled column, is characterized in that: including steel pipe and the gypsum mortar being filled in steel pipe and waste concrete block, described steel pipe two ends are sealed by end plate.
2. steel pipe gypsum mortar discarded concrete coupled column according to claim 1, is characterized in that: described gypsum mortar is made up of water, Gypsum Fibrosum and sand.
3. steel pipe gypsum mortar discarded concrete coupled column according to claim 1, is characterized in that: also added with retarder in described gypsum mortar.
4. steel pipe gypsum mortar discarded concrete coupled column according to claim 1, is characterized in that: the maximum gauge of described waste concrete block is the 1/4-1/3 of diameter of steel tube, and the minimum diameter of waste concrete block is 20-30mm.
5. steel pipe gypsum mortar discarded concrete coupled column according to claim 2, is characterized in that: the ratio of described water, Gypsum Fibrosum and sand is 0.3:1:1-0.5:1:1.
6. steel pipe gypsum mortar discarded concrete coupled column according to claim 4, is characterized in that: described retarder is citric acid.
7. the steel pipe gypsum mortar discarded concrete coupled column according to claim 1-6, it is characterized in that: described steel pipe sidewall is placed with multipair transverse steel jack along short transverse, transverse steel inserts in transverse steel jack through steel pipe and two ends, and described transverse steel and steel pipe walls are welded and fixed.
8. the method preparing steel pipe gypsum mortar discarded concrete coupled column described in claim 1, comprises the following steps:
(1) one end plate of steel pipe bottom welding is sealed, in steel pipe, then fill the gypsum mortar of thickness between the 1/2-1 of diameter of steel tube, as needed in the retarder adding certain metering in gypsum mortar, for regulating the flocculation time of gypsum mortar；
(2) in steel pipe, discarded solidifying soil block and/or rubble and/or cobble and filler plaster mortar are alternately thrown；
(3) after gypsum mortar condenses, in steel pipe top welded end plate.
9. the method preparing steel pipe gypsum mortar discarded concrete coupled column according to claim 8, it is characterized in that: in described step (2), throw in steel pipe and the process of discarded solidifying soil block and/or rubble and/or cobble and filler plaster mortar often arrives a pair i.e. insertion transverse steel in transverse steel jack in transverse steel jack position, and by outside steel pipe, transverse steel is welded in steel pipe walls.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610312862.7A CN105804321B (en) | 2016-05-12 | 2016-05-12 | Steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610312862.7A CN105804321B (en) | 2016-05-12 | 2016-05-12 | Steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN105804321A true CN105804321A (en) | 2016-07-27 |
| CN105804321B CN105804321B (en) | 2018-10-12 |
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| CN201610312862.7A Active CN105804321B (en) | 2016-05-12 | 2016-05-12 | Steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989266A (en) * | 2017-10-30 | 2018-05-04 | 华侨大学 | Inside fill out the concrete filled steel tube coupled column and its construction method of segment work stone |
| CN117127755A (en) * | 2023-09-25 | 2023-11-28 | 中南大学 | Bamboo-like outer constraint support tube concrete column |
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| CN203238784U (en) * | 2013-05-20 | 2013-10-16 | 山东科技大学 | Rectangular concrete filled steel tubular column and box-type steel beam rib-penetrated type node structure |
| CN203361470U (en) * | 2013-07-17 | 2013-12-25 | 江苏永泰建造工程有限公司 | Steel tube accommodating type recycled concrete column |
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| CN103938798A (en) * | 2014-04-10 | 2014-07-23 | 北京工业大学 | Gigantic column with connecting reinforcing bar among stiffening ribs and manufacturing method |
| CN104032838A (en) * | 2014-05-26 | 2014-09-10 | 湖北弘毅钢结构工程有限公司 | Connection joint of concrete filled steel tubular column and beams |
| CN105239724A (en) * | 2015-11-09 | 2016-01-13 | 上海建筑设计研究院有限公司 | Giant rectangular-section concrete filled steel tubular column |
| CN205935407U (en) * | 2016-05-12 | 2017-02-08 | 温州大学 | Steel pipe gypsum mortar waste concrete combination column |
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2016
- 2016-05-12 CN CN201610312862.7A patent/CN105804321B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202324344U (en) * | 2011-11-17 | 2012-07-11 | 吴若涵 | Discarded brick regenerated mixed rectangular column |
| CN203238784U (en) * | 2013-05-20 | 2013-10-16 | 山东科技大学 | Rectangular concrete filled steel tubular column and box-type steel beam rib-penetrated type node structure |
| CN203361470U (en) * | 2013-07-17 | 2013-12-25 | 江苏永泰建造工程有限公司 | Steel tube accommodating type recycled concrete column |
| CN203462587U (en) * | 2013-09-10 | 2014-03-05 | 同济大学 | Penetration steel bar type joint of angle steel connection type rectangular concrete-filled steel tube column and steel beam |
| CN103938798A (en) * | 2014-04-10 | 2014-07-23 | 北京工业大学 | Gigantic column with connecting reinforcing bar among stiffening ribs and manufacturing method |
| CN104032838A (en) * | 2014-05-26 | 2014-09-10 | 湖北弘毅钢结构工程有限公司 | Connection joint of concrete filled steel tubular column and beams |
| CN105239724A (en) * | 2015-11-09 | 2016-01-13 | 上海建筑设计研究院有限公司 | Giant rectangular-section concrete filled steel tubular column |
| CN205935407U (en) * | 2016-05-12 | 2017-02-08 | 温州大学 | Steel pipe gypsum mortar waste concrete combination column |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989266A (en) * | 2017-10-30 | 2018-05-04 | 华侨大学 | Inside fill out the concrete filled steel tube coupled column and its construction method of segment work stone |
| CN117127755A (en) * | 2023-09-25 | 2023-11-28 | 中南大学 | Bamboo-like outer constraint support tube concrete column |
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| Publication number | Publication date |
|---|---|
| CN105804321B (en) | 2018-10-12 |
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Effective date of registration: 20200210 Address after: 310052 floor 2, No. 1174, Binhe Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou fog Technology Co., Ltd. Address before: 325200 No. 38 Dongfang Road, Ouhai Economic Development Zone, Zhejiang, Wenzhou (Wenzhou University Science Park) Patentee before: Wenzhou University |
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Effective date of registration: 20200709 Address after: Bei Qiao Zhen Zhuang Ji Cun, Xiangcheng District, Suzhou City, Jiangsu Province Patentee after: Suzhou Sanjia Transportation Engineering Co.,Ltd. Address before: 310052 floor 2, No. 1174, Binhe Road, Changhe street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: Hangzhou fog Technology Co.,Ltd. |
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