CN110295707A - A kind of Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab and processing method - Google Patents
A kind of Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab and processing method Download PDFInfo
- Publication number
- CN110295707A CN110295707A CN201910532623.6A CN201910532623A CN110295707A CN 110295707 A CN110295707 A CN 110295707A CN 201910532623 A CN201910532623 A CN 201910532623A CN 110295707 A CN110295707 A CN 110295707A
- Authority
- CN
- China
- Prior art keywords
- hollow slab
- polyurea elastomer
- precast hollow
- prefabricated concrete
- spray
- Prior art date
- 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.)
- Pending
Links
- 229920002396 Polyurea Polymers 0.000 title claims abstract description 47
- 229920001971 elastomer Polymers 0.000 title claims abstract description 47
- 239000000806 elastomer Substances 0.000 title claims abstract description 47
- 239000007921 spray Substances 0.000 title claims abstract description 23
- 239000004567 concrete Substances 0.000 title claims abstract description 18
- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 238000009408 flooring Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011178 precast concrete Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/14—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by boring or drilling
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
- E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
- E04C2/26—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials composed of materials covered by two or more of groups E04C2/04, E04C2/08, E04C2/10 or of materials covered by one of these groups with a material not specified in one of the groups
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a kind of Spray Polyurea Elastomers to reinforce prefabricated concrete hollow slab and processing method, its key points of the technical solution are that: a kind of Spray Polyurea Elastomer reinforcing prefabricated concrete hollow slab, including precast hollow slab, the precast hollow slab is equipped with several threading connectors, the anchor plate that is set to threading connector both ends, the polyurea elastomer reinforcing layer for being sprayed at precast hollow slab outer surface.The present invention utilizes the superior comprehensive mechanical property of polyurea elastomer, can significantly improve the stress performance of precast hollow slab.
Description
Technical field
The present invention relates to building structure aseismatic and reinforce skill field more particularly to a kind of reinforcing of Spray Polyurea Elastomer in advance
Concrete core slab processed and processing method.
Background technique
Precast hollow slab due to have the characteristics that material module, construction is simple, short construction period and be used widely,
The self-built local-style dwelling houses of China's brick masonry structure building and villages and small towns largely uses precast hollow slab flooring.Connected between precast hollow slab using splicing
It connects, floorboard cooperation performance is poor, and earthquake is serious after meeting with earthquake.Meanwhile using the old building of precast hollow slab
It is long to build the age, has a large capacity and a wide range, structure aging and working load increase lead to the poor seismic behavior of structure, need to be to precast hollow slab
It is reinforced.
Reinforced mesh is arranged in precast hollow plate surface in traditional reinforcement means, and is laid with screed or concrete layer, reinforces
Dead load increases afterwards, and carries out consolidation process only for flooring, and the anti-seismic performance for being unfavorable for structure is promoted.
Therefore, we are it is necessary to improve such a structure, to overcome drawbacks described above.
Summary of the invention
The object of the present invention is to provide a kind of Spray Polyurea Elastomers to reinforce prefabricated concrete hollow slab and processing method, benefit
With the superior comprehensive mechanical property of polyurea elastomer, the stress performance of precast hollow slab can be significantly improved.
Above-mentioned technical purpose of the invention is that used following technical scheme is realized: a kind of Spray Polyurea Elastomer reinforcing is pre-
Concrete core slab processed, including precast hollow slab, the precast hollow slab are equipped with several threading connectors, are set to threading company
The anchor plate at fitting both ends, the polyurea elastomer reinforcing layer for being sprayed at precast hollow slab outer surface.
The further setting of the present invention are as follows: spacing is within 1000mm between the adjacent threading connector.
The further setting of the present invention are as follows: the threading connector is reinforcing bar or shank of bolt.
The further setting of the present invention are as follows: the anchor plate is circular steel plate, is arranged among the anchor plate in hollow out, thick
Degree is 2-6mm, diameter 40-80mm.
The further setting of the present invention are as follows: two tables above and below the polyurea elastomer reinforcing layer spraying Yu Suoshu precast hollow slab
Face, the polyurea elastomer reinforcing layer is with a thickness of 2-6mm.
The further setting of the present invention are as follows: the density of the polyurea elastomer reinforcing layer is 1.02g/cm3, tensile strength is
23MPa, elasticity modulus 230MPa, elongation 300%.
The further setting of the present invention are as follows: a kind of Spray Polyurea Elastomer reinforces the processing side of prefabricated concrete hollow slab
Method includes the following steps:
S1, by wait reinforce precast hollow slab top, spray after bottom surface cleaning it is wet, in precast hollow slab to be reinforced
Top, each Spray Polyurea Elastomer reinforcing layer of bottom surface；
S2, it drills on precast hollow slab, and hole is made to penetrate precast hollow slab and polyurea elastomer reinforcing layer；
S3, threading connector is passed through into hole, and keeps the prominent precast hollow slab wall length in both ends identical, by anchor plate
It is connect with threading connector.
In conclusion the invention has the following advantages:
1) present invention is using polyurea elastomer as surface material is reinforced, using threading connecting rod, anchor plate and polyureas bullet
Property body reinforcing layer and the good adhesive property of concrete realize and cooperate with precast hollow slab, and utilize polyurea elastomer tension
The feature that intensity is high, elongation is high and durability is good, can be improved the globality and bearing capacity of precast hollow slab flooring；
2) compared with prior art, reinforcement means of the invention is in the feelings for increasing seldom construction weight, occupying little room
Under condition, so that the anti seismic efficiency of precast hollow slab flooring greatly improves；
3) polyurea elastomer is to be reacted to generate the high molecular polymer containing urea bond with amino-compound by isocyanates, one
Kind novel solvent-free, free of contamination green material；Since polyurea elastomer has, tensile strength is high, elongation is high, durability is good
The features such as, it is applied to the reinforcing of precast hollow slab flooring, there is preferable prospect.
Detailed description of the invention
Fig. 1 is the front view of embodiment one；
Fig. 2 is the cross-sectional view in the portion A-A of embodiment one；
Fig. 3 is the schematic diagram of anchor plate.
Corresponding component title represented by number in figure: 1, threading connector；2, anchor plate；3, precast hollow slab；4, gather
Urea elastomers reinforcing layer.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Diagram and specific embodiment are closed, the present invention is further explained.
Embodiment one: as shown in Figure 1 to Figure 3, a kind of Spray Polyurea Elastomer reinforcing precast concrete proposed by the present invention
Cored slab, including precast hollow slab 3, precast hollow slab 3 are equipped with several threading connectors 1, and 1 liang of distal process of threading connector
It is flushed for 3 surface of precast hollow slab or with 3 surface of precast hollow slab, the anchor plate 2 at 1 both ends of threading connector, prefabricated
About 3 two outer surface of cored slab is coated with polyurea elastomer reinforcing layer 4.
Wherein select the size of precast hollow slab 3 are as follows: long 4200mm, width 400mm, high 120mm；Several threading connectors
1 material is reinforcing bar or shank of bolt, and threading connector 1 is arranged in arrays, and spacing is not more than between adjacent threading connector 1
1000mm；Anchor plate 2 is provided in round steel plate, is arranged among anchor plate 2 in hollow out, with a thickness of 2-6mm, diameter 40-80mm,
And when threading connector 1 is reinforcing bar, anchor plate 2 and threading connector 1 are welded to connect, when threading connector 1 is shank of bolt
When, threading connector 1 can be threadedly coupled or be welded to connect with anchor plate 2；Polyurea elastomer reinforcing layer 4, which applies, is set to precast hollow
3 surface of plate with a thickness of 2-6mm, and the density of polyurea elastomer reinforcing layer 4 is 1.02g/cm3, tensile strength 23MPa,
Elasticity modulus is 230MPa, elongation 300%.
Polyurea elastomer is to be reacted to generate the high molecular polymer containing urea bond with amino-compound by isocyanates, a kind of
Novel solvent-free, free of contamination green material.Since polyurea elastomer has tensile strength is high, elongation is high, durability is good etc.
Feature is applied to the reinforcing of 3 flooring of precast hollow slab, has preferable prospect.
Embodiment two, a kind of processing method that Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab, including such as
Lower step:
S1, by wait reinforce precast hollow slab 3 top, spray after bottom surface cleaning it is wet, in precast hollow slab 3 to be reinforced
Top, each Spray Polyurea Elastomer reinforcing layer 4 of bottom surface；
S2, it drills on precast hollow slab 3, and hole is made to penetrate precast hollow slab 3 and polyurea elastomer reinforcing layer 4；
S3, threading connector 1 is passed through into hole, and keeps the prominent wall length in both ends identical, anchor plate 2 and threading are connected
Fitting 1 connects.
Application examples one: precast hollow slab 3 to be reinforced, 3 size of precast hollow slab are selected are as follows: long 4200mm, width 400mm,
High 120mm uses 48 threading connectors 1 and 96 anchor plates 2 altogether, and polyurea elastomer reinforcing layer 4 is with a thickness of 4mm, entirely
Floor level is having a size of 5800mm × 4200mm.
Threading connector 1 uses diameter for the HRB400 of 8mm grade reinforcing bar, and both ends pass through precast hollow slab 3 and polyureas
Prominent 15mm, 1 spacing of threading connector are 500mm after elastomer reinforcing layer 4, and anchor plate 2 is connect with threading connector 1, even
The form of connecing can be welded or is bolted, and anchor plate 2 is circular steel plate, and circular steel plate part hollow out, with a thickness of 4mm, diameter is
60mm。
The density of polyurea elastomer reinforcing layer 4 is 1.02g/cm3, tensile strength 23MPa, elasticity modulus 230MPa,
Elongation 300%.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent defines.
Claims (7)
1. a kind of Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab, including precast hollow slab (1), which is characterized in that institute
It states precast hollow slab (3) and is equipped with several threading connectors (1), the anchor plate (2) for being set to threading connector (1) both ends, spray
It is applied to the polyurea elastomer reinforcing layer (4) of precast hollow slab (3) outer surface.
2. a kind of Spray Polyurea Elastomer according to claim 1 reinforces prefabricated concrete hollow slab, which is characterized in that phase
Spacing is within 1000mm between the adjacent threading connector (1).
3. a kind of Spray Polyurea Elastomer according to claim 1 or 2 reinforces prefabricated concrete hollow slab, feature exists
In the threading connector (1) is reinforcing bar or shank of bolt.
4. a kind of Spray Polyurea Elastomer according to claim 1 reinforces prefabricated concrete hollow slab, which is characterized in that institute
Stating anchor plate (2) is circular steel plate, is arranged among the anchor plate (2) in hollow out, with a thickness of 2-6mm, diameter 40-80mm.
5. a kind of Spray Polyurea Elastomer according to claim 1 reinforces prefabricated concrete hollow slab, which is characterized in that institute
State polyurea elastomer reinforcing layer (4) spraying Yu Suoshu precast hollow slab (3) upper and lower surfaces, the polyurea elastomer reinforcing layer
(4) with a thickness of 2-6mm.
6. a kind of Spray Polyurea Elastomer according to claim 1 reinforces prefabricated concrete hollow slab, which is characterized in that institute
The density for stating polyurea elastomer reinforcing layer (4) is 1.02g/cm3, tensile strength 23MPa, elasticity modulus 230MPa, elongation
Rate 300%.
7. the processing method that a kind of Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab, which is characterized in that including walking as follows
It is rapid:
S1, will be sprayed after reinforcing the tops of precast hollow slab (3), bottom surface cleaning it is wet, in precast hollow slab to be reinforced (3)
Top, each Spray Polyurea Elastomer reinforcing layer (4) of bottom surface；
S2, it drills on precast hollow slab (3), and hole is made to penetrate precast hollow slab (3) and polyurea elastomer reinforcing layer (4)；
S3, threading connector (1) is passed through into hole, and keeps prominent precast hollow slab (3) the wall length in both ends identical, will anchored
Plate (2) is connect with threading connector (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910532623.6A CN110295707A (en) | 2019-06-19 | 2019-06-19 | A kind of Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab and processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910532623.6A CN110295707A (en) | 2019-06-19 | 2019-06-19 | A kind of Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab and processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110295707A true CN110295707A (en) | 2019-10-01 |
Family
ID=68028313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910532623.6A Pending CN110295707A (en) | 2019-06-19 | 2019-06-19 | A kind of Spray Polyurea Elastomer reinforces prefabricated concrete hollow slab and processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110295707A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2458255A (en) * | 2008-03-12 | 2009-09-16 | Robert Trickett | A finishing material and a related constructional article |
| DE202014105269U1 (en) * | 2014-11-03 | 2014-11-24 | Augsburger Holzhaus Gmbh | building wall |
| CN104499640A (en) * | 2014-12-30 | 2015-04-08 | 中国矿业大学 | High-durability concrete structural element and manufacture method thereof |
| CN207484810U (en) * | 2017-11-28 | 2018-06-12 | 盐城荣平建设工程有限公司 | A kind of high-strength composite concrete prefabricated board |
| CN109113260A (en) * | 2018-10-11 | 2019-01-01 | 罗纯艳 | Assembled cracking resistance wallboard and its assembly method |
| CN208884837U (en) * | 2018-04-08 | 2019-05-21 | 陕西建工第一建设集团有限公司 | A kind of green building light composite wallboard |
| CN208918083U (en) * | 2018-10-10 | 2019-05-31 | 南京林业大学 | A kind of sandwich aerated concrete wall panel of bamboo |
-
2019
- 2019-06-19 CN CN201910532623.6A patent/CN110295707A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2458255A (en) * | 2008-03-12 | 2009-09-16 | Robert Trickett | A finishing material and a related constructional article |
| DE202014105269U1 (en) * | 2014-11-03 | 2014-11-24 | Augsburger Holzhaus Gmbh | building wall |
| CN104499640A (en) * | 2014-12-30 | 2015-04-08 | 中国矿业大学 | High-durability concrete structural element and manufacture method thereof |
| CN207484810U (en) * | 2017-11-28 | 2018-06-12 | 盐城荣平建设工程有限公司 | A kind of high-strength composite concrete prefabricated board |
| CN208884837U (en) * | 2018-04-08 | 2019-05-21 | 陕西建工第一建设集团有限公司 | A kind of green building light composite wallboard |
| CN208918083U (en) * | 2018-10-10 | 2019-05-31 | 南京林业大学 | A kind of sandwich aerated concrete wall panel of bamboo |
| CN109113260A (en) * | 2018-10-11 | 2019-01-01 | 罗纯艳 | Assembled cracking resistance wallboard and its assembly method |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191001 |