CN202000669U - Formwork cloth for manufacturing partial polymer-cement concrete - Google Patents
Formwork cloth for manufacturing partial polymer-cement concrete Download PDFInfo
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- CN202000669U CN202000669U CN2011200809681U CN201120080968U CN202000669U CN 202000669 U CN202000669 U CN 202000669U CN 2011200809681 U CN2011200809681 U CN 2011200809681U CN 201120080968 U CN201120080968 U CN 201120080968U CN 202000669 U CN202000669 U CN 202000669U
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Abstract
Formwork cloth for manufacturing partial polymer-cement concrete comprises a leveling layer, an intermediate layer and an adhesive layer, wherein one side of the intermediate layer is compounded with the leveling layer; and the adhesive layer is arranged on the other side of the intermediate layer. The formwork cloth is adopted to make a double-layered structure with a surface layer (protective layer) poured by polymer-cement concrete and an interior filled with common concrete, so that the cost is lowered and the requirements needed for particular projects are met while the durability of the concrete structure is improved. The utility model has the advantages of simple structure, low cost and convenience in manufacturing, and has great economic, environmental and social benefits.
Description
Technical field
The utility model relates to a kind of template cloth, especially a kind of template cloth of fabrication portion polymer cement concrete.
Background technology
Compressive strength height, easy to drawing materials, compliance are good because of having for concrete, easy construction and cost performance advantages of higher, have become the most large constructional materials now.But it also comes with some shortcomings, and is lower as tension, rupture strength, and fragility is big and the toughness deficiency is easy to crack, and impervious and resist chemical can differ from etc.Under the reciprocation of materialization factors such as the thermal field in natural environment, moisture field, corrosive substance (as chlorion, sulfate and carbon dioxide etc.) and illumination, performance degradation very easily takes place and destroys in concrete, so its scope of application under extreme natural environment is restricted.At present, both at home and abroad durability that adopt basic safeguard procedures and surface protection technique to improve concrete structure engineering more.Surface protection technique can effectively reduce extraneous erosion, but it is many to influence top layer protection qualitative factor, easily loses protection effect.In addition, the ageing resistance of protective materials itself, adhesiveness, resistance to acids and bases and durability etc. are relatively poor, can not reach permanent protection purpose.Compare with the top layer guard technology, basic measures are to take measures from concrete self structure, more can fundamentally improve concrete durability, realize permanent protection purpose.Wherein, adopt polymer concrete to be carried out one of basic safeguard procedures that modification is the most frequently used and effect is preferable.
Polymer concrete is to adopt admixture, mix and impregnating method, polymer is combined and a kind of organic composite material of forming with cement concrete, mainly is divided into the gluing concrete of polymer impregnated concrete, polymer cement concrete and polymer.The related polymer concrete of the utility model is meant polymer cement concrete (be called for short PCC), and it is jointly as the polymer concrete of cementitious material with polymer (or monomer) and cement.Its manufacture craft is similar to ordinary concrete, mixes a certain amount of organic matter and assistant thereof when adding the water stirring, and after moulding and maintenance, cement and polymer cure form.Because polymer reacts with component in the cement and forms part hole in bridge chain, filling and the sealing cement, formed polymer phase space net structure, improved density, the cohesiveness of cement stone, made it improve concrete performance to a certain extent the improvement effect of transition region between aggregate and cement slurry.Compare with ordinary concrete, polymer cement concrete combines the advantage of polyester, cement, has early strong, excellent properties such as crumbly coefficient is low, damping is big, limit elongation is high, shock resistance, acid and alkali-resistance, impermeability and good endurance.In view of the excellent properties of polymer cement concrete, it is abominable or have in the engineering of specific (special) requirements to be widely used in soda acid salt content height, environment.Yet still there is deficiency in polymer cement concrete, and as polymer volume poor effect at least, polymer volume is crossed can increase the early-age shrinkage amount and the amount of creeping at most, significantly reduce modulus of elasticity of concrete and price is higher; When under extreme natural environment, adopting polymer cement concrete cast member, require the volume of polymer bigger, and what play protective action only is polymer in the concrete cover, topping is inoperative substantially with interior polymer, but for how the member that easy construction is poured into a mould makes polymer concrete by same proportioning, because of its cost is about the several times of ordinary concrete, so increased huge cost expense; In addition, some specific engine request is guaranteeing that some performance (as high elastic modulus and low deformation rate etc.) that Structural Engineering possesses ordinary concrete simultaneously, also requires concrete to possess good antiacid alkali salt erosiveness; After adopting, water the polymer cement concrete method when addressing the above problem, can increase difficulty of construction and bring the interface in conjunction with and problem such as caking property is relatively poor.Thereby the application of polymer cement concrete in some Structural Engineering limited by aspects such as cost and specific (special) requirements.How to prepare and can satisfy the requirement of Structural Engineering desired properties, the polymer cement concrete that can reduce cost is the focus and the difficult point of research at present again, so need the research that launches this aspect badly.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art and provides a kind of simple in structure, fabrication portion polymer cement concrete convenient, and cost is low, the template cloth of fabrication portion polymer cement concrete with huge economy, environment and social benefit.
The purpose of this utility model is achieved by following technical proposals:
A kind of template cloth of fabrication portion polymer cement concrete comprises levelling course, intermediate layer, adhesion layer, and a side and the described levelling course in described intermediate layer are combined with each other, and opposite side is provided with described adhesion layer.
In the utility model, also be provided with the base stock of the described adhesion layer of protection on the described adhesion layer.
In the utility model, described levelling course is main weaving grid cloth or metal grill cloth for the polyphosphazene polymer condensating fiber.
In the utility model, described intermediate layer is foamed polyurethane layer or polyether ester family macromolecule material layer.
In the utility model, by line described levelling course is fixed on the described intermediate layer between described intermediate layer and the described levelling course, the trend of described line can be parallel lines or vertical line or linear for intersecting.
Adopt said structure, its principle is to utilize porous material under inside concrete pressure, capillary effect and vibrating etc. acts on huge shrinkage strain to take place, hole is compressed, and the polymer emulsion in the hole flows out into from template cloth in the green concrete in the certain depth scope because of pressurized.Under concrete internal pressure and vibrating etc. acted synergistically, polymer emulsion and cement concrete slurry quilt be mixing, homogenizing constantly, and partial polymer also can infiltrate inside concrete with water, and this situation is subjected to the control of concrete adhesion degree and time of setting; Thereby can in the certain thickness scope, can form than the homogeneous polymer cement concrete; Along with constantly successively decreasing of polymer ecto-entad content, form a transition zone that contains small amount of polymer, and be left in the basket with interior in a certain degree of depth; Along with constantly carrying out of hydrated cementitious and polymer cure, whole system finally becomes hardenite because of forfeiture plasticity.Adopting the utility model can make the top layer is polymer cement concrete, and inside is the double-decker concrete of ordinary concrete.
The levelling course effect is to discharge smoothly from the intermediate layer and infiltrate the concrete at the guarantee polymer emulsion, and raising concrete structural surface quality, eliminate the bubble that the concrete surface moulding produces, sand line and sand spot etc., thereby make concrete form compact surfaces, make concrete surface reach bright and clean, attractive in appearance, levelling course polyphosphazene polymer condensating fiber is main weaving grid cloth or metal grill cloth, fibre gap is even, moderate, both can guarantee that emulsion was smooth, evenly infiltrate inside concrete and do not assemble, can guarantee the sand in the concrete mortar again, stone and cement granules etc. can not ooze out, part cement slurry and polymer emulsion solidify between levelling course and intermediate layer, grid cloth can be coated in the concrete, weaving grid cloth or metal grill cloth are because of having higher pliability and intensity, can effectively stop the concrete surface cracking on the one hand, strengthen the concrete surface abrasion resistance, cracking resistance and tensile strength etc., form fine and close surface on the other hand and can significantly strengthen performances such as concrete impermeabilisation and carbonization, improve concrete application life.
Intermediate layer effect is can soak the saturated polymer emulsion under the no-load effect, and guarantees that polymer emulsion is evenly distributed stable within it and does not solidify, thereby plays the polymer emulsion effect of storing; The intermediate layer is under concrete internal pressure and loading such as vibrate; huge shrinkage strain can take place and the polymer emulsion of storing can be arranged inside concrete smoothly; and vibrate and synergy such as internal pressure under mixing, homogenizing take place; thereby construct top layer (topping) and be the structure of polymer concrete; the intermediate layer adopts foamed polyurethane layer or this material that contains a large amount of openings and the hole that communicates with one another of polyether ester family macromolecule material layer to constitute, and has performances such as soft yielding, good-extensibility, high resiliency and low-density.The more polymer emulsion of the big saturable of porosity, the good polymer emulsion that helps of the connectivity of hole infiltrates inside concrete smoothly and does not introduce bubble, yieldingly make the intermediate layer under faint disturbing load effect, huge distortion take place and saturated polymerized emulsion is discharged, high resiliency and good-extensibility can guarantee that the intermediate layer is not fragile in work progress, but low-density decreasing weight be convenient to the construction and secure adhesion on template.
Be that line (as nylon wire and litzendraht wire etc.) by density interphase connects as one between intermediate layer and the levelling course, guarantee under the situation that does not increase manufacture difficulty, make closely to link together between levelling course and the intermediate layer.
In sum, excellent properties such as that the utility model possesses is simple in structure, cost is low, the fabrication portion polymer cement concrete is convenient have huge economy, environment and social benefit.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model section.
In the accompanying drawing 1,2: 1-levelling course, 2-intermediate layer, 3-adhesion layer, 4-base stock.
The specific embodiment
Below in conjunction with accompanying drawing, describe the specific embodiment of the template cloth of fabrication portion polymer cement concrete in detail.
As shown in Figure 1, 2, a kind of template cloth of fabrication portion polymer cement concrete comprises levelling course 1, intermediate layer 2, adhesion layer 3, and a side and the described levelling course 1 in described intermediate layer 2 are combined with each other, and opposite side is provided with described adhesion layer 3.
In the utility model, also be provided with the base stock 4 of the described adhesion layer 3 of protection on the described adhesion layer 3.
In the utility model, described levelling course 1 is main weaving grid cloth or metal grill cloth for the polyphosphazene polymer condensating fiber.
In the utility model, described intermediate layer 2 is foamed polyurethane layer or polyether ester family macromolecule material layer.
In the utility model, by line described levelling course 1 is fixed on the described intermediate layer 2 between described intermediate layer 2 and the described levelling course 1, the trend of described line can be parallel lines or vertical line or linear for intersecting.
The utility model is that also described adhesion layer 3 can be made of a layer binder, but also is brushed to compositions such as cementing agent above the template or glue at the construction field (site).Its effect is with firm the adhering on the template of template cloth, and the template cloth that guarantees to soak the saturated polymer emulsion does not come off in work progress, be out of shape and a fold etc., so that reach ideal effect.Adhesion layer 3 makes intermediate layer 2 and template adhere to be one, and described adhesion layer 3 has advantages such as adhesion stress is strong, water-fast and lasting, and stronger adhesion stress can guarantee template cloth when the saturated polymer emulsion, and secure adhesion is on template and do not come off; Water-fast and persistence can guarantee template cloth when soaking the saturated polymer emulsion, does not cause template cloth to come off because of the existence of water or phenomenon such as landing.
During construction, earlier with firm the adhering on the template of template cloth; Then, intermediate layer 2 is soaked full polymer emulsion and enclose levelling course 1; At last, concreting can obtain to have top layer (topping) and still is the double-decker concrete of ordinary concrete for the polymer cement concrete internal layer.In the concreting process, be aggregated the saturated intermediate layer of thing emulsion 2 inside concrete pressure, vibrate and acting in conjunction such as capillary effect under huge shrinkage strain takes place, polymer emulsion can be advanced inside concrete by row, and mix one with concrete mortar, finally generate polymer cement concrete because of hardening of cement and polymer cure.Prepared concrete has top layer (topping) and is polymer cement concrete, and inside is the double-decker of ordinary concrete.This double-decker both can make concrete can resist extraneous medium and load etc. to concrete corrosion, can realize reducing cost, satisfying the purpose of specific requirement of engineering again, had huge economy, environment and social benefit.
Claims (1)
1. the template cloth of a fabrication portion polymer cement concrete, it is characterized in that: comprise levelling course (1), intermediate layer (2), adhesion layer (3), one side in described intermediate layer (2) and described levelling course (1) are combined with each other, and opposite side is provided with described adhesion layer (3).
2. the template cloth of fabrication portion polymer cement concrete according to claim 1 is characterized in that: the base stock (4) that also is provided with the described adhesion layer of protection (3) on the described adhesion layer (3).
3. the template cloth of fabrication portion polymer cement concrete according to claim 1 is characterized in that: described levelling course (1) is main weaving grid cloth or metal grill cloth for the polyphosphazene polymer condensating fiber.
4. the template cloth of fabrication portion polymer cement concrete according to claim 1 is characterized in that: described intermediate layer (2) are foamed polyurethane layer or polyether ester family macromolecule material layer.
5. according to the template cloth of claim 1 or 3 or 4 described fabrication portion polymer cement concretes, it is characterized in that: by line described levelling course (1) is fixed on the described intermediate layer (2) between described intermediate layer (2) and the described levelling course (1), the trend of described line can be parallel lines or vertical line or linear for intersecting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200809681U CN202000669U (en) | 2011-03-24 | 2011-03-24 | Formwork cloth for manufacturing partial polymer-cement concrete |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200809681U CN202000669U (en) | 2011-03-24 | 2011-03-24 | Formwork cloth for manufacturing partial polymer-cement concrete |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202000669U true CN202000669U (en) | 2011-10-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200809681U Expired - Fee Related CN202000669U (en) | 2011-03-24 | 2011-03-24 | Formwork cloth for manufacturing partial polymer-cement concrete |
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| CN (1) | CN202000669U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582433A (en) * | 2018-04-24 | 2018-09-28 | 广东省公路建设有限公司虎门二桥分公司 | The precasting process of concrete structure surface layer functionally gradient |
| CN111763060A (en) * | 2020-06-09 | 2020-10-13 | 中南大学 | Concrete protective layer reinforcing material, composite template cloth and application of concrete protective layer reinforcement |
-
2011
- 2011-03-24 CN CN2011200809681U patent/CN202000669U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108582433A (en) * | 2018-04-24 | 2018-09-28 | 广东省公路建设有限公司虎门二桥分公司 | The precasting process of concrete structure surface layer functionally gradient |
| CN111763060A (en) * | 2020-06-09 | 2020-10-13 | 中南大学 | Concrete protective layer reinforcing material, composite template cloth and application of concrete protective layer reinforcement |
| CN111763060B (en) * | 2020-06-09 | 2021-09-28 | 中南大学 | Concrete protective layer reinforcing material, composite template cloth and application of concrete protective layer reinforcement |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20140324 |