CN201933462U - Concrete faceplates and hydraulic engineering concrete buildings using same - Google Patents
Concrete faceplates and hydraulic engineering concrete buildings using same Download PDFInfo
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- CN201933462U CN201933462U CN 201020680716 CN201020680716U CN201933462U CN 201933462 U CN201933462 U CN 201933462U CN 201020680716 CN201020680716 CN 201020680716 CN 201020680716 U CN201020680716 U CN 201020680716U CN 201933462 U CN201933462 U CN 201933462U
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Abstract
The utility model discloses concrete faceplates used in the hydraulic engineering field, especially in high-altitude cold areas, and also relates to hydraulic engineering concrete buildings using the concrete faceplates. Each of the concrete faceplates comprises a concrete structural basal body and a freeze-proof and anti-seepage structural polyurea-elastomer coating arranged on a surface layer of the basal body; and the concrete faceplates are arranged in water level fluctuating areas of the hydraulic engineering concrete buildings. The concrete faceplates and the hydraulic engineering concrete buildings provided by the utility model solve the problems that conventional hydraulic engineering concrete buildings in high-altitude cold areas require thicker concrete with higher freezeproof property and service durability, resulting in higher cost of construction and inconvenience in execution.
Description
Technical field
The utility model relates to the hydraulic engineering field, relates in particular to a kind of concrete slab that is applied in high height above sea level cold district, and the utility model also relates to a kind of hydraulic concrete buildings of using described concrete slab.
Background technology
The concrete for hydraulic structure durability of structures requires to comprise and strength grade of concrete, water/binder ratio, cement consumption, impervious grade, freeze proof grade and corrosion resistance should propose corresponding life requirement by the residing environment category of structure.Required minimum intensity grade, maximum water/binder ratio and the minimum cement dosage of structural concrete generally directly determined according to the ambient conditions classification, impervious grade should determine that freeze proof grade is determined according to weather subregion, freezing-thawing cycles, surface local microclimate conditions, water saturation degree, structural element importance and maintenance condition etc. according to the factors such as the extent of injury of the head that is born, hydraulic gradient and downstream drainage condition, condition of water quality and percolating water.
And the ambient conditions of high height above sea level cold district is a kind of special, relative severe rugged environment condition, the fluctuation of water table district that is positioned at the concrete for hydraulic structure structure of this kind environment will stand the test of freezing freeze thawing circulation, and this freezing freeze thawing circulation has very high destructiveness, so the durability index of high height above sea level cold district concrete structure is had relatively high expectations, thickness is thicker, this has just caused the cost of concrete for hydraulic structure structure of high height above sea level cold district higher, construction inconvenience.
The utility model content
The purpose of this utility model is to provide a kind of can effectively reduce hydraulic Structures Concrete structure design thickness, reduce life requirement, easy construction, the cost of concrete self are relatively low but the comprehensive anti-seepage effect of building reliable, the concrete slab of superior in durability, and a kind of hydraulic concrete buildings of using this concrete slab also is provided.
The technical solution adopted in the utility model is as follows to achieve these goals:
The utility model concrete slab comprises concrete substrate and the freeze proof barrier coat that is arranged on described concrete base surface.
Preferably, described freeze proof barrier coat is a polyurea elastomer coating.
The utility model also provides a kind of hydraulic concrete buildings of using described concrete slab, and the district is provided with described concrete slab at described hydraulic concrete buildings fluctuation of water table.
The beneficial effects of the utility model are as follows:
Concrete slab of the present utility model improves concrete freeze proof antiseepage ability by establish freeze proof barrier coat in the concrete base surface; Prevent carbonization of concrete, freeze thawing and contact erosion damage, improve concrete durability; The microscopic checks on blocking concrete surface; Stop the seepage and the expansion of distress in concrete, to the inhibitory action that further developed of distress in concrete.Satisfying under the prerequisite that fabric structure has same durability index, can reach and reduce the residing environment category of concrete structure, thereby reduce structural concrete minimum intensity grade, maximum water/binder ratio, minimum cement dosage, impervious grade, freeze proof grade and a series of life requirements of corrosion resistance determined according to environment category, simultaneously the thickness of attenuate fabric structure, weaken extraneous factor to concrete destruction, simplify the purpose of concrete temperature control measure and construction technology.
Hydraulic concrete buildings of the present utility model only is provided with the described concrete slab with freeze proof barrier coat in the fluctuation of water table district; and the concrete structure that is in for a long time below the fixed level (level of dead water) can not be subjected to the destruction that freeze thawing circulates; and external environmental condition is constant relatively; can not take special safeguard measure, provide cost savings.
Description of drawings
Fig. 1 is the structure chart of concrete slab of the present utility model;
Fig. 2 is the structure chart of an embodiment of hydraulic concrete buildings of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the technical solution of the utility model and beneficial effect are further set forth.
Referring to accompanying drawing 1, concrete slab of the present utility model is by the effect that the freeze proof impervious barrier 1 of one deck reaches freeze proof antiseepage is set on concrete substrate 2, freeze proof impervious barrier 1 of the present utility model adopts polyurea elastomer coating, and why the utility model selects polyurea materials to be because it has following characteristics:
(1) avirulence: 100% solid content does not contain organic volatile matter, compliance with environmental protection requirements.
(2) excellent comprehensive mechanical properties: hot strength reaches as high as 27.5MPa, and elongation rate reaches as high as 1000%, and tearing strength is 43.9～105.4kN/m.Can in wide range, hardness be regulated according to the demand of different application occasion, from Shao A30 (soft rubber) to Shao D65 (hard elastics body).
(3) good impermeability: 24h is waterproof under the 2.0MPa pressure, and material does not have any variation.
(4) low temperature flexibility is good: do not crack-30 ℃ of following doublings, its hot strength, tearing strength and shear strength all are improved to some extent at low temperatures, and elongation rate then has decline slightly.
(5) solidify fast: reaction speed is exceedingly fast, and 5s condenses, and 1min can reach walking intensity, and can carry out follow-up construction, and efficiency of construction improves greatly.And owing to solidify fast, solved the sagging phenomenon that easily produces in the spraying coating process in the past, and can spray mo(u)lding on arbitrary surface, inclined-plane and vertical plane, coating surface is smooth, smooth, and base material is formed excellent protection and decoration function.
(6) efficiency of construction height: adopt complete spraying, build equipment, but continued operation, spraying 100m
2Area, only need 30min.One time spraying application thickness can reach about 2mm, has overcome the disadvantage of multilayer construction in the past.
(7) ambient conditions is required lower: insensitive to moisture, moisture, construction is not subjected to the influence of environment temperature, humidity.Under basic unit's dry situation, but at northern dust storm season and southern plum rain season normal construction still; In addition, can also under-28 ℃ cold environment, construct, and the 1h assimilation, guarantee to enclose the northern area normal construction in winter at me.
(8) corrosion resistance: owing to do not contain catalyzer, molecular structure stabilized, so polyureas shows excellent water-fast, resistance to chemical attack and performance such as ageing-resistant, at water, acid, alkali, the wet goods medium is medium-term and long-term soaks, performance does not reduce.
(9) polyurea materials and wide variety of substrates as concrete, mortar, steel, pitch, plastics, aluminium and timber etc., all have good adhesive.
(10) polyurea materials can spray continuously and can not cause phenomenons such as bubbling, coking because of reaction heat is too concentrated, can use at 150 ℃ long-term down, and can bear 350 ℃ of thermal shocks in short-term.
(11) material property is adjustable, can add various face, filler, makes the goods of different colours and shape, and can introduce short glass fiber material is strengthened.
(12) have higher erosion control abrasive resistance, its anti-impact mill ability can reach on the C60 coagulation more than 10 times.
(13) have advantages such as higher salt fog resistance burn into frost resistance is good.
In order to study the research of spray polyurea to the concrete antifreezing performance, the test of being correlated with.The concrete test block that one group of 9 freeze proof label of moulding are lower (10cm * 10cm * 40cm), wherein at the concrete surface spray polyurea of three test blocks, the normal temperature maintenance, antifreezing test is carried out in all the other six test blocks.In these six test blocks, one at spray polyurea of concrete, and one at the adjacent two sides spray polyurea of concrete, and one at three spray polyureas of concrete, and three spray polyureas are not put into the antifreezing test machine simultaneously with these six samples.By antifreezing test, the freeze proof grade of three of spray polyurea test blocks is not F100 only, and the freeze proof grade of the test block behind the spray polyurea reaches more than the F300.
Carry out bonding strength test simultaneously to the test specimen of the concrete surface spray polyurea of three test blocks, normal temperature maintenance and three spray polyureas and through the test block of 300 freezing-thawing tests, after the brushing BE14 interfacial agents, adhesion strength between polyureas and the concrete is higher, generally speaking, for the lower concrete of intensity, equal some concrete body of the plane of disruption is pulled off in the pull-out test, but for high-grade concrete, the plane of disruption is between polyureas and concrete surface, and corresponding adhesion strength is just big.By evidence, behind the concrete sample spray polyurea, because the polyureas impermeability is fine, stoped contacting between water and the concrete, improved concrete anti-freezing property greatly.The freeze proof test specimen not position freeze thawing of spray polyurea degrades, and the position of spray polyurea is excellent, the adhesion strength basically identical behind the spray polyurea between antifreezing test front and back polyureas and the concrete.
Accompanying drawing 2 is structure charts of an embodiment of hydraulic concrete buildings of the present utility model, this hydraulic concrete buildings is a steel concrete panel gravel dam, by sand gravel master enrockment district 9, be positioned at the wave wall 6 at 9 tops, sand gravel master enrockment district, be successively set on sand gravel master enrockment district 9 lip-deep concrete slabs 3 from top to bottom, bed course 4, catchment 5 constitutes, this surface, steel concrete panel gravel dam is divided into fluctuation of water table district 7 and slough 8 according to long-term water level position, concrete slab with freeze proof impervious barrier 1 of the present utility model is arranged on fluctuation of water table district 7, and this freeze proof impervious barrier 1 is the freeze proof barrier coat of 2mm polyurea elastomer.
Claims (3)
1. a concrete slab is characterized in that: comprise concrete substrate and the freeze proof barrier coat that is arranged on described concrete base surface.
2. concrete slab according to claim 1 is characterized in that: described freeze proof barrier coat is a polyurea elastomer coating.
3. a hydraulic concrete buildings is characterized in that: in described hydraulic concrete buildings fluctuation of water table district claim 1 or 2 described concrete slabs are set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020680716 CN201933462U (en) | 2010-12-17 | 2010-12-17 | Concrete faceplates and hydraulic engineering concrete buildings using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020680716 CN201933462U (en) | 2010-12-17 | 2010-12-17 | Concrete faceplates and hydraulic engineering concrete buildings using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201933462U true CN201933462U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020680716 Expired - Lifetime CN201933462U (en) | 2010-12-17 | 2010-12-17 | Concrete faceplates and hydraulic engineering concrete buildings using same |
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| Country | Link |
|---|---|
| CN (1) | CN201933462U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392431A (en) * | 2011-09-17 | 2012-03-28 | 江西科技师范学院 | Sewage insulation system for drinking water source |
| CN109704664A (en) * | 2019-03-13 | 2019-05-03 | 北京琦正德科技有限责任公司 | A method of improving cured concrete antifreezing grade |
| CN109761644A (en) * | 2019-04-09 | 2019-05-17 | 北京琦正德科技有限责任公司 | A method of raising has occurred and that frost and melt damage concrete frost resistance |
-
2010
- 2010-12-17 CN CN 201020680716 patent/CN201933462U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392431A (en) * | 2011-09-17 | 2012-03-28 | 江西科技师范学院 | Sewage insulation system for drinking water source |
| CN109704664A (en) * | 2019-03-13 | 2019-05-03 | 北京琦正德科技有限责任公司 | A method of improving cured concrete antifreezing grade |
| CN109761644A (en) * | 2019-04-09 | 2019-05-17 | 北京琦正德科技有限责任公司 | A method of raising has occurred and that frost and melt damage concrete frost resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |
|
| CX01 | Expiry of patent term |