CN105804321B - Steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof - Google Patents
Steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof Download PDFInfo
- Publication number
- CN105804321B CN105804321B CN201610312862.7A CN201610312862A CN105804321B CN 105804321 B CN105804321 B CN 105804321B CN 201610312862 A CN201610312862 A CN 201610312862A CN 105804321 B CN105804321 B CN 105804321B
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- steel pipe
- gypsum mortar
- steel
- gypsum
- mortar
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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)
- Rod-Shaped Construction Members (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a kind of steel pipe gypsum mortar discarded concrete coupled columns, it is characterized in that：Including steel pipe and the gypsum mortar and recycled concrete aggregate that are filled in steel pipe, the steel pipe both ends are sealed by end plate, multiple holes of vibrating are placed on the steel pipe side wall, a plurality of longitudinal reinforcement is distributed in the steel pipe inner wall even circumferential.The invention also discloses a kind of methods preparing steel pipe gypsum mortar discarded concrete coupled column.Steel pipe gypsum mortar discarded concrete coupled column prepared by the present invention has the characteristics that fast hard, early strong, can be rapidly reached bearing capacity；And the intensity of component mainly has discarded slow setting soil block skeleton to provide, and can reduce material cost；In addition gypsum mortar is used only as cementitious material and pointing, and there be the constraint of steel pipe outside, can weaken the determination of the interface weakness between gypsum mortar and recycled concrete aggregate, the intensity and ductility of component is greatly improved.
Description
Technical field
The present invention relates to a kind of steel pipe gypsum mortar discarded concrete coupled columns and preparation method thereof.
Background technology
With the high speed development of building industry, the pulling down and removing a building for reconstruction and repair of villages and small towns, Urban New District and residential quarters it is continuous
Exploitation and scale construction and public utility it is newly-built, can all generate a large amount of building waste.In addition, China part is built
Building structure will reach design life.According to statistics, the annual projects in China account for the 40% of construction project total amount, and every
The quantity that ten thousand square metres of projects will produce building waste is 7000 tons -12000 tons.It will make after construction waste crushing
Natural aggregate resource anxiety can be not only solved the problems, such as regenerated aggregate, the regeneration of concrete is realized and recycles, and ensure building
The sustainable development of industry.A large amount of experimental study has been done to regeneration concrete performance both at home and abroad, has shown regeneration concrete items
Can be good, it can be used in Practical Project construction.Current discarded concrete coupled column is typically all that discarded mix is filled in steel pipe
The shortcomings of materials such as solidifying soil block, cement, coal ash, there are rates of set for this coupled column slowly, intensity is not good enough in the early time, and fill material
The combination dynamics of material and steel pipe is poor.
Invention content
In view of the deficiency of background technology, technical problem to be solved by the invention is to provide it is a kind of it is fast it is hard, it is early it is strong, ductility is good
And steel pipe gypsum mortar discarded concrete coupled column and preparation method thereof at low cost.
For this purpose, the present invention adopts the following technical scheme that realize：
A kind of steel pipe gypsum mortar discarded concrete coupled column, including steel pipe and the gypsum mortar that is filled in steel pipe and useless
Concrete block is abandoned, the steel pipe both ends are sealed by end plate.
The gypsum mortar is made of water, gypsum and sand.
Also added with retarder in the gypsum mortar.
The maximum gauge of the recycled concrete aggregate is the 1/4-1/3 of diameter of steel tube, the minimum diameter of recycled concrete aggregate
For 20-30mm.
The ratio of the water, gypsum and sand is 0.3：1：1-0.5：1：1.
The retarder is citric acid.
The present invention also provides a kind of method preparing above-mentioned steel pipe gypsum mortar discarded concrete coupled column, including it is following
Step：
（1）Steel pipe bottom one end plate of welding is sealed, between the 1/2-1 that diameter of steel tube is then filled into steel pipe
The retarder centainly measured is added in the gypsum mortar of thickness in gypsum mortar as needed, the wadding for adjusting gypsum mortar
The solidifying time；
（2）Recycled concrete aggregate and/or rubble and/or cobble and filler plaster mortar are alternately thrown into steel pipe；
（3）After gypsum mortar condensation, in steel pipe top welded end plate.
After adopting the above technical scheme, the intensity of coupled column is mainly provided by recycled concrete aggregate, gypsum mortar is used only as
Cementitious material and pointing, gypsum mortar pour latter 20-30 minutes it is i.e. plastic, intensity can arrive 20-60MPa, have fast
Firmly, early strong feature, and the intensity of component mainly has discarded slow setting soil block skeleton to provide, and gypsum mortar is used only as cementitious material
And there be the constraint of steel pipe pointing, outside, can weaken interface weakness between gypsum mortar and recycled concrete aggregate really
It is fixed, the intensity and ductility of component can not only be greatly improved, but also material cost can be reduced.
Description of the drawings
The present invention has following attached drawing：
Fig. 1 is the structural schematic diagram of steel pipe gypsum mortar discarded concrete coupled column provided by the invention.
Specific implementation mode
Shown in referring to Fig.1, steel pipe gypsum mortar discarded concrete coupled column provided by the invention includes steel pipe 1 and is filled in
Gypsum mortar 2 in steel pipe 1 and recycled concrete aggregate 3,1 both ends of steel pipe are sealed by end plate, and gypsum mortar 2 is by water, gypsum and sand
The ratio of composition, water, gypsum and sand is 0.3：1：1-0.5：1：1, mixing water amount is bigger, and intensity is lower, and mobility is better, stone
Also added with retarder in cream mortar 2, retarder is citric acid, the flocculation time for adjusting gypsum mortar 2, recycled concrete aggregate
3 maximum gauge is the 1/4-1/3 of 1 diameter of steel pipe, and the minimum diameter of recycled concrete aggregate 3 is 20-30mm.
Shown in referring to Fig.1, in order to increase structural strength, the steel pipe side wall upper edge short transverse is placed with multipair lateral steel
Muscle jack 4, transverse steel 5 passes through steel pipe 1 and both ends are inserted into transverse steel jack 4, and the transverse steel 5 is welded with 1 wall of steel pipe
Connect fixation.It is larger in view of the volume of recycled concrete aggregate 3, if can not be obtained in steel pipe 1 using common reinforcement cage structure
Enough bearing spaces, thus the structure for being inserted into using transverse steel 5 transverse steel jack 4 contribute to will reinforcing bar in coupled column
Core combines, and improves intensity.
The present invention also provides a kind of methods preparing steel pipe gypsum mortar discarded concrete coupled column, including following step
Suddenly：
（1）By 1 bottom of steel pipe welding one end plate be sealed, then into steel pipe fill diameter of steel tube 1/2-1 it
Between thickness gypsum mortar 2, the retarder centainly measured is added in gypsum mortar 2 as needed, for adjusting gypsum mortar 2
Flocculation time；
（2）Recycled concrete aggregate 3 and/or rubble and/or cobble and filler plaster mortar are alternately thrown into steel pipe；
（3）After the condensation of gypsum mortar 2, in 1 top welded end plate of steel pipe.
In above-mentioned steps（2）In, recycled concrete aggregate 3 and/or rubble and/or cobble and filled stone are thrown into steel pipe 1
A pair of of 4 position of transverse steel jack is often reached during cream mortar is inserted into transverse steel into transverse steel jack 4
5, and transverse steel 5 is welded on 1 wall of steel pipe by 1 outside of steel pipe.Transverse steel inserted mode provided in this embodiment can be kept away
Exempt from transverse steel 5 to contact with the isometric larger aggregate of recycled concrete aggregate 3, avoids the loading for influencing large volume aggregate, carry simultaneously
Rise the integral strength of coupled column.
Claims (2)
1. a kind of steel pipe gypsum mortar discarded concrete coupled column, it is characterized in that：Including steel pipe and the gypsum being filled in steel pipe
Mortar and recycled concrete aggregate, the steel pipe both ends are sealed by end plate；The gypsum mortar is made of water, gypsum and sand；It is described
Also added with retarder in gypsum mortar, the retarder is citric acid；The maximum gauge of the recycled concrete aggregate is that steel pipe is straight
The minimum diameter of the 1/4-1/3 of diameter, recycled concrete aggregate are 20-30mm；The ratio of the water, gypsum and sand is 0.3：1：1-
0.5：1：1；The steel pipe side wall upper edge short transverse is placed with multipair transverse steel jack, and transverse steel passes through steel pipe and both ends
It is inserted into transverse steel jack, the transverse steel is welded and fixed with steel pipe walls.
2. a kind of method preparing steel pipe gypsum mortar discarded concrete coupled column described in claim 1, includes the following steps：
（1）Steel pipe bottom one end plate of welding is sealed, thickness between the 1/2-1 of diameter of steel tube is then filled into steel pipe
Gypsum mortar, the retarder centainly measured is added in gypsum mortar as needed, when flocculation for adjusting gypsum mortar
Between；
（2）Recycled concrete aggregate and/or rubble and/or cobble and filler plaster mortar are alternately thrown into steel pipe；Into steel pipe
A pair of of transverse steel is often reached during throwing recycled concrete aggregate and/or rubble and/or cobble and filler plaster mortar to insert
Transverse steel is inserted into hole position into transverse steel jack, and by transverse steel is welded on steel pipe walls on the outside of steel pipe
On；
（3）After gypsum mortar condensation, in steel pipe top welded end plate.
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 |
|---|---|---|---|
| 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 |
|---|---|
| CN105804321A CN105804321A (en) | 2016-07-27 |
| CN105804321B true CN105804321B (en) | 2018-10-12 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN (1) | CN105804321B (en) |
Families Citing this family (1)
| 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 |
Family Cites Families (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 |
| CN105239724B (en) * | 2015-11-09 | 2017-07-11 | 上海建筑设计研究院有限公司 | A kind of huge concrete filled steel rectangular tubes post |
| CN205935407U (en) * | 2016-05-12 | 2017-02-08 | 温州大学 | Steel pipe gypsum mortar waste concrete combination column |
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| CN105804321A (en) | 2016-07-27 |
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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. |