CN210679097U - Self-curing device for cement concrete formed by electric heating template paraffin through wax melting method for bridge guardrail - Google Patents
Self-curing device for cement concrete formed by electric heating template paraffin through wax melting method for bridge guardrail Download PDFInfo
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- CN210679097U CN210679097U CN201921132275.5U CN201921132275U CN210679097U CN 210679097 U CN210679097 U CN 210679097U CN 201921132275 U CN201921132275 U CN 201921132275U CN 210679097 U CN210679097 U CN 210679097U
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Abstract
The utility model discloses a self-curing device for forming a film on a cement concrete by a bridge guardrail wax melting method electric heating template paraffin, which comprises a guardrail template, wherein an electric heating device is arranged on the outer wall of the guardrail template, an end line of the electric heating device is led out from one end of the template, and a layer of paraffin film is uniformly coated on the inner wall of the guardrail template; the electric heating device is an insulated electric heating wire which is arranged on the outer wall of the guardrail template in parallel at equal intervals; a continuous insulating layer which is beneficial to rapid temperature rise of the guardrail template is laid on the outer side of the electric heating device; the utility model discloses to traditional maintenance method not to have the waste of maintenance water, machinery, manual work and material and to coat when the construction and leak the shortcoming of brush, the film-forming is inhomogeneous, discontinuous, easy polluted environment, set up insulating heating wire and paraffin layer on current guardrail general steel form, paraffin is at bridge railing cement concrete surface continuous film-forming, keeps apart with the ambient air, improves cement concrete's durability, prolongs bridge railing's life.
Description
The technical field is as follows:
the utility model relates to a construction field especially relates to a bridge railing melts wax method electric heat template paraffin film-forming cement concrete from curing means.
Background art:
cement concrete as an artificial stone, because of its raw materials are abundant, the fabrication cost is cheap, simple technological process, the performance is good, durable characteristics, have been widely used in civil engineering, its intensity is formed under the condition of certain temperature, cement and water pass hydration reaction to form the cement stone, the hydration reaction is more sufficient, its intensity is higher, water is the main influence factor that the intensity of cement concrete forms, especially after cement concrete is poured, such as hot weather, weather dry, not timely carry on the maintenance, water evaporation is too fast in cement concrete, form the dehydration phenomenon, can make the cement granule of already formed gel not fully hydrated, can't turn into the stable crystallization, lack sufficient cohesive force with aggregate, thus appear the flakiness or pulverize and drop on the cement concrete surface, in addition, when the cement concrete has not had sufficient intensity yet, the early evaporation of water can generate larger shrinkage deformation to cause the surface of cement concrete to generate shrinkage cracks, so the maintenance of the cement concrete in the initial stage is very important, the cement concrete is maintained immediately after final setting, a reasonable maintenance period is determined according to the difference of cement varieties and environmental conditions, generally not less than seven days, and the requirement of water retention maintenance to ensure the water for cement hydration reaction is a key link in the cement concrete construction process.
The traditional curing method comprises natural curing, steam curing, curing by a curing liquid method and curing by a plastic film, and the essence of the curing method is external watering curing and self-curing by utilizing self-moisture.
And (4) natural maintenance: and covering with geotextile, sprinkling water for health preservation, keeping moist and preventing water evaporation.
A steam method: the steam generator or the steam boiler is enclosed in a surrounding way, and the temperature is controlled not to exceed 65 ℃.
The health preserving liquid method: a layer of colorless impervious film is formed, which can prevent the water in the cement concrete from evaporating, thereby achieving the purpose of self-curing.
The plastic film curing means that the cement concrete is covered by the plastic film to separate the cement concrete from air, the moisture is not evaporated, the cement achieves hydration by the moisture in the concrete to achieve coagulation hardening, and the plastic film curing belongs to the self-curing of the cement concrete.
The aim of curing is to create various conditions to ensure that the cement fully undergoes hydration reaction and the hardening of cement concrete is accelerated; and secondly, cracks caused by abnormal shrinkage due to changes of environmental conditions such as insolation, wind blowing, cold and sudden temperature changes after the cement concrete is formed are prevented. Theoretical studies show that: when the water-cement ratio in the cement concrete reaches 0.20, the water content in the cement concrete can meet the requirement of the normal hydration reaction of the cement, the water-cement ratio of the cement concrete for the guardrail is generally over 0.4, and the water content in the cement concrete can completely meet the requirement of the hydration reaction of the cement without influencing the normal increase of the strength of the cement concrete. Meanwhile, in engineering construction practice, the cement concrete is self-maintained by utilizing self moisture (mainly close to a horizontal plane or a cement concrete surface with small inclination) by using the health-care liquid and the plastic film, and a good maintenance effect is also obtained, so that the self-maintenance of the cement concrete by means of self moisture content is fully possible.
The guardrail cement concrete has an exposed surface, is in direct contact with the atmospheric environment, is influenced by carbon dioxide and other harmful gases, sunlight irradiation and freeze-thaw cycle adverse factors, is easy to carbonize and weathers, so that the service performance of the guardrail cement concrete is reduced, and the durability of the guardrail cement concrete is reduced.
The utility model has the following contents:
the utility model discloses the technical problem that will solve is: the device overcomes the defects of the prior art, and provides the paraffin wax-melting method electric heating template paraffin wax film-forming cement concrete self-curing device for the bridge guardrail, which has a simple structure, is convenient to carry, can be disassembled, can be hung and can be placed on the ground.
The technical scheme of the utility model is that: the utility model provides a bridge guardrail melts wax method electric heat template paraffin film-forming cement concrete from curing means, includes the guardrail template, characterized by: the outer wall of the guardrail template is provided with an electric heating device, an end line of the electric heating device is led out from one end of the template, and the inner wall of the guardrail template is uniformly coated with a layer of paraffin film.
Furthermore, the electric heating device is an insulating electric heating wire which is arranged on the outer wall of the guardrail template in parallel at equal intervals.
Furthermore, a continuous heat-insulating layer beneficial to rapid temperature rise of the guardrail template is laid on the outer side of the electric heating device.
Furthermore, the thickness of the paraffin film is 1mm-2mm, and the guardrail template is a guardrail general steel template.
The utility model has the advantages that:
1. the utility model discloses to traditional maintenance method not to have the waste of maintenance water, machinery, manual work and material and to coat when the construction and leak the shortcoming of brush, the film-forming is inhomogeneous, discontinuous, easy polluted environment, set up insulating heating wire and paraffin layer on current guardrail general steel form, paraffin is at bridge railing cement concrete surface continuous film-forming, keeps apart with the ambient air, improves cement concrete's durability, prolongs bridge railing's life.
2. The utility model discloses be provided with the paraffin layer in guardrail template inboard, the circular telegram melts the back, forms the liquid paraffin thin layer between template and concrete interface, because the heat accumulation inflation on liquid paraffin layer, loosens guardrail template fixing device this moment, and the template can break away from the concrete interface easily, can easily the drawing of patterns, does not use traditional release agent, and the non-staining environment does not need the watering health preserving, saves the turnover material that mechanical use cost, labour cost and maintenance used.
3. The utility model discloses after the drawing of patterns, when the temperature reduces to ambient temperature, the molten paraffin can form continuous paraffin film on guardrail cement concrete surface, and this film does not change cement concrete's colour and confined water, isolation air, and cement concrete's hydration effect leans on self inside moisture to accomplish, reaches the purpose of self maintenance, and forms long-term protection to cement concrete surface shape.
4. The utility model discloses paraffin film and cement concrete surface combine together, and the paraffin molecule is being heated to melt infiltration to cement concrete surface tiny hole and bubble in to form continuous film on cement concrete surface, keep apart with the ambient air, block carbon dioxide and other erosion gas passageways in the air, alleviate cement concrete surface's morals and manners and carbonization, block the passageway that arouses the reinforcing bar corrosion, reduce the reinforcing bar corrosion, the effective life of extension guardrail improves its service durability.
5. The utility model discloses electric heat template paraffin is behind bridge railing cement concrete surface continuous film forming, and the even colour of outward appearance is unanimous, and cement concrete utilizes self moisture to carry out self-curing, and simple process, water conservation material saving save manual work and mechanical expense reduce the morals and manners and the carbonization on cement concrete surface, block the passageway that arouses the reinforcing bar corrosion, reduce the reinforcing bar corrosion, improve the durability of cement concrete, prolong bridge railing's life.
Description of the drawings:
FIG. 1 is a schematic structural diagram of a self-curing device for a paraffin-coated cement concrete for an electric heating template by a bridge guardrail paraffin melting method.
The specific implementation mode is as follows:
example (b): referring to fig. 1, in the figure, 1-a guardrail template, 2-an electric heating device, 3-an end line, 4-a paraffin film and 5-a continuous insulating layer.
A self-curing device for a cement concrete formed by an electric heating template and paraffin by a bridge guardrail paraffin melting method comprises a guardrail template 1, wherein an electric heating device 2 is arranged on the outer wall of the guardrail template 1, an end line 3 of the electric heating template is led out from one end of the template, and a layer of paraffin film 4 is uniformly coated on the inner wall of the guardrail template 1.
Further, the electric heating device 2 is an insulated heating wire which is arranged on the outer wall of the guardrail template 1 in parallel at equal intervals.
Further, a continuous heat-insulating layer 5 (cotton cloth, blanket and perlite plate) beneficial to rapid temperature rise of the guardrail template 1 is laid on the outer side of the electric heating device 2.
Further, the thickness of the paraffin film 4 is 1mm-2mm, and the guardrail template 1 is a guardrail general steel template.
When the device is used, the inner surface of the guardrail template 1 is uniformly coated with a paraffin film 4 with the thickness of 1mm-2mm (paraffin liquid is directly coated after the template can be heated, the paraffin film is formed after cooling, and the thickness of the paraffin film can be controlled by the heating temperature of the template), the paraffin film 4 is tightly combined with the guardrail template 1, certain hardness is achieved after film forming, damage caused by concrete pouring and vibrating is avoided in the construction process, concrete is poured according to the traditional process, after the concrete is finally solidified to form strength, an insulated electric heating wire power supply of the device is connected through an end wire 3, the temperature is gradually increased to 65 ℃ (the melting point is 52-56 ℃), the paraffin layer on the inner wall of the guardrail template 1 is fully melted, a liquid paraffin thin layer is formed between the guardrail template 1 and a concrete interface, and due to heat storage expansion of the liquid paraffin layer, the guardrail loosens the template 1 fixing device at the moment, the guardrail template 1, the method does not use the traditional release agent, does not pollute the environment, does not need watering for maintenance, and saves the mechanical use cost, the labor cost and the turnover materials for maintenance.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments still fall within the scope of the technical solution of the present invention.
Claims (4)
1. The utility model provides a bridge guardrail melts wax method electric heat template paraffin film-forming cement concrete from curing means, includes the guardrail template, characterized by: the outer wall of the guardrail template is provided with an electric heating device, an end line of the electric heating device is led out from one end of the template, and the inner wall of the guardrail template is uniformly coated with a layer of paraffin film.
2. The self-curing device for the paraffin wax film-forming cement concrete of the electric heating template of the bridge guardrail by the paraffin wax melting method according to claim 1, which is characterized in that: the electric heating device is an insulating electric heating wire which is arranged on the outer wall of the guardrail template in parallel at equal intervals.
3. The self-curing device for the paraffin wax film-forming cement concrete of the electric heating template of the bridge guardrail by the paraffin wax melting method according to claim 1, which is characterized in that: and a continuous heat-insulating layer beneficial to rapid temperature rise of the guardrail template is laid on the outer side of the electric heating device.
4. The self-curing device for the paraffin wax film-forming cement concrete of the electric heating template of the bridge guardrail by the paraffin wax melting method according to claim 1, which is characterized in that: the thickness of parafilm is 1mm-2mm, the guardrail template is the general steel template of guardrail.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132275.5U CN210679097U (en) | 2019-07-18 | 2019-07-18 | Self-curing device for cement concrete formed by electric heating template paraffin through wax melting method for bridge guardrail |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921132275.5U CN210679097U (en) | 2019-07-18 | 2019-07-18 | Self-curing device for cement concrete formed by electric heating template paraffin through wax melting method for bridge guardrail |
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| CN210679097U true CN210679097U (en) | 2020-06-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338227A (en) * | 2021-04-30 | 2021-09-03 | 李雪琛 | Can shorten concrete maintenance periodic cycle's die shell |
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2019
- 2019-07-18 CN CN201921132275.5U patent/CN210679097U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338227A (en) * | 2021-04-30 | 2021-09-03 | 李雪琛 | Can shorten concrete maintenance periodic cycle's die shell |
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