CN108386001A - A kind of structural strengthening technique based on puffing concrete - Google Patents
A kind of structural strengthening technique based on puffing concrete Download PDFInfo
- Publication number
- CN108386001A CN108386001A CN201810193407.9A CN201810193407A CN108386001A CN 108386001 A CN108386001 A CN 108386001A CN 201810193407 A CN201810193407 A CN 201810193407A CN 108386001 A CN108386001 A CN 108386001A
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- China
- Prior art keywords
- concrete
- puffing
- old
- component
- binding force
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The present invention provides a kind of puffing concrete strengthening techniques.The invention belongs to technical field of civil engineering.The system can be used for the reinforcing of old concrete component and the interstructural sealing of submarine pipeline in Structural Engineering.By bonding of the puffing concreting between different component or anchoring position, after puffing concrete, due to the expansion of concrete coagulation hardening process volume, filling is played the role of in the gap generated when can in various ways be fixed together to different component, to enhance the binding force between component.
Description
Technical field
The present invention provides a kind of puffing concrete strengthening technique, it be it is a kind of for enhance concrete and other components it
Between cohesive force a kind of technique.Sealing suitable for Structural Engineering between the reinforcing and submerged structure of old concrete component with plus
Gu.
Background technology
Armored concrete system is by Structural Engineering extensive use.But since durability is poor, armored concrete knot
The aging of structure is increasingly common, has become one of the main problem in Structural Engineering to the reinforcement of these structures.
A kind of common methods of concrete structure reinforcement are increasing section areas on the basis of original structure, i.e., are tied in original
One block of new concrete is fixed below structure, as shown in Figure 1.Usual way is punched in original structure, will be new with reinforcing bar
Concrete member anchoring on old structure.Binding force between reinforcing bar and old concrete structure is the important of influence structural strengthening
Factor.But if normal concrete is poured in gap between old concrete structure structure and reinforcing bar, in maintenance processes
Since the drying shrinkage effect of normal concrete can cause to crack between reinforcing bar and old concrete structure, reinforcing bar and old coagulation are reduced
Binding force between soil structure.If the gap between reinforcing bar and old concrete structure pours expansive concrete, expansion is utilized
Concrete increases reinforcing bar and old condensing expansion effect when hardening, common crackle when can eliminate using normal concrete
Binding force between concrete structure, and then preferably play the effect of structural strengthening.
On the other hand, it in many Large Underwater pipeline configurations, needs through concrete connection and sealing pipeline and pipeline
Between gap, as shown in Figure 2.Expansive concrete is used in casing between tubes, is imitated using the expansion of expansive concrete
On the one hand fruit can play sealing function, on the other hand can improve the binding force between casing and pipeline.Utilize expansion coagulation
The compression of local products life makes the close connection of the two, the leakproofness and globality of enhancing structure.
Invention content
The present invention provides a kind of puffing concrete strengthening techniques.It is one kind by puffing concrete in condensation process
Expand the construction technology of the binding force in enhancing structure between different piece.
Concrete of the present invention is puffing concrete, i.e., cement expansive material is added in normal concrete and is made
Concrete.Cement expansive material can be calcium sulphoaluminate class cement expansive material, calcium oxide cement expansive material, sulphur aluminic acid
Calcium-calcium oxide cement expansive material.
The principle of the present invention is the bonding by puffing concreting between different component or anchoring position.Tripe systems
When part is fixed together in various ways, gap inevitably is generated in bonded part, these gaps can influence between concrete component
Binding force.Can this binding force be enhanced by casting concrete wherein.After puffing concrete, due to concrete coagulation
The expansion of hardening process volume can play the role of filling, to enhance the binding force between component to the gap between component.
The present invention can be used for repairing old structure, can be used for the cohesive force between enhancing different component.
Description of the drawings
Fig. 1 is that Enlargement of Section reinforces old concrete structure figure；Fig. 2 is submarine pipeline sealing structure figure；
In figure：
1- expansive concrete 2- reinforcing bars
3- old concrete structure 4- ruggedized constructions
1 6- pipelines 2 of 5- pipelines
7- casing 8- pipeline enclosures gap
Specific implementation mode
Puffing concrete strengthening technique specific embodiment is as follows
1) the puffing concrete of mix.It needs to add cement expansive material in concrete, volume can be according to different expansions
The ability of agent is adjusted 10% or so, and the control ratio of mud should not be too big.
2) after needing the position repaired to be combined with new structural member, puffing concrete is poured, is ensured with building enclosure protection
Puffing concrete condenses hardening wherein.
3) concrete formation after 3 days, removes building enclosure.
Claims (4)
1. a kind of construction technology using puffing concrete strengthening structure.It is characterized in that：It was being condensed by puffing concrete
Binding force in expansion enhancing structure in journey between different piece.
2. puffing concrete strengthening technique according to claim 1, it is characterised in that：Concrete used is puffing in technique
The concrete of cement expansive material is added in concrete.Cement expansive material can be calcium sulphoaluminate class cement expansive material, oxygen
Change calcium class cement expansive material, calcium sulphoaluminate-calcium oxide cement expansive material.
3. puffing concrete strengthening technique according to claim 1, it is characterised in that：By puffing concreting in difference
Bonding between component or anchoring position.When using normal concrete as binder, due to the drying shrinkage effect of concrete, meeting
It is cracked in bonded part, when influencing the binding force between concrete component, but pouring expansive concrete wherein, due to swollen
Volume expansion in swollen concrete coagulation hardening process not but not generates cup shake, can also enhance the knot between component
With joint efforts.
4. puffing concrete strengthening technique according to claim 1, it is characterised in that：It can be used for old concrete component
Reparation and submarine pipeline sealing.When reinforcing old concrete structure using Enlargement of Section, it is often necessary to be inserted into reinforcing bar
Reinforce the binding force between old concrete structure and ruggedized construction in old concrete.Between old concrete structure and the gap of reinforcing bar
It can be with the binding force between reinforcing steel bar and old concrete structure using expansive concrete.This technique applies also for seabed prefabricated pipe
The intersegmental connection sealing in road, i.e., pass through the swollen of expansive concrete by puffing concreting to the connecting portion between section and section
Connection and sealing between swollen effect enhancing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193407.9A CN108386001A (en) | 2018-03-09 | 2018-03-09 | A kind of structural strengthening technique based on puffing concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810193407.9A CN108386001A (en) | 2018-03-09 | 2018-03-09 | A kind of structural strengthening technique based on puffing concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108386001A true CN108386001A (en) | 2018-08-10 |
Family
ID=63066762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810193407.9A Pending CN108386001A (en) | 2018-03-09 | 2018-03-09 | A kind of structural strengthening technique based on puffing concrete |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108386001A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413349A (en) * | 2008-11-27 | 2009-04-22 | 上海市建筑科学研究院(集团)有限公司 | Inorganic rear anchoring plant rib glue construction method |
| CN101581152A (en) * | 2009-06-05 | 2009-11-18 | 武汉大学 | Method for reinforcing concrete column by expanding section of coated concrete-filled steel tube (CFST) |
| CN102116092A (en) * | 2009-12-30 | 2011-07-06 | 中冶成工上海五冶建设有限公司 | Method for constructing reinforcing band for compensating contraction of concrete and preventing cracks |
| CN103526953A (en) * | 2013-10-19 | 2014-01-22 | 叶长青 | Method for processing roof panels insufficient in bearing capacity |
| CN103835305A (en) * | 2014-02-26 | 2014-06-04 | 湘电风能（福建）有限公司 | Novel guide tube frame |
-
2018
- 2018-03-09 CN CN201810193407.9A patent/CN108386001A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101413349A (en) * | 2008-11-27 | 2009-04-22 | 上海市建筑科学研究院(集团)有限公司 | Inorganic rear anchoring plant rib glue construction method |
| CN101581152A (en) * | 2009-06-05 | 2009-11-18 | 武汉大学 | Method for reinforcing concrete column by expanding section of coated concrete-filled steel tube (CFST) |
| CN102116092A (en) * | 2009-12-30 | 2011-07-06 | 中冶成工上海五冶建设有限公司 | Method for constructing reinforcing band for compensating contraction of concrete and preventing cracks |
| CN103526953A (en) * | 2013-10-19 | 2014-01-22 | 叶长青 | Method for processing roof panels insufficient in bearing capacity |
| CN103835305A (en) * | 2014-02-26 | 2014-06-04 | 湘电风能（福建）有限公司 | Novel guide tube frame |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180810 |