CN112341106A - Fast-hardening support-free permanent template frame and preparation method thereof - Google Patents
Fast-hardening support-free permanent template frame and preparation method thereof Download PDFInfo
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- CN112341106A CN112341106A CN202011232471.7A CN202011232471A CN112341106A CN 112341106 A CN112341106 A CN 112341106A CN 202011232471 A CN202011232471 A CN 202011232471A CN 112341106 A CN112341106 A CN 112341106A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/06—Aluminous cements
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- 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
- E04G11/00—Forms, shutterings, or falsework for making walls, floors, ceilings, or roofs
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00939—Uses not provided for elsewhere in C04B2111/00 for the fabrication of moulds or cores
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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Abstract
The invention discloses a quick-hardening support-free permanent template frame and a preparation method thereof. The invention has the beneficial effects that: this permanent template thickness is 20mm, has higher intensity, can make to drawing the connecting piece interval to set up to 30cm, and the quantity that can to a great extent reduce the connecting piece reduces to drawing the connecting piece cost. The high-fluidity self-leveling concrete wall formwork has the advantages that the fluidity is high, the self-leveling concrete wall formwork can be formed without vibration, the requirements of building industrialization are met in the aspects of saving field labor, saving turnover materials and the like, 2-5 wall formworks are arranged on each wall formwork, the production efficiency of a permanent formwork component is difficult to improve due to the fact that common cement-based formworks are slowly hardened, the compression resistance of the common cement-based formwork can reach more than 20MPa within 2 hours by using a quick-hardening formwork material, and the production efficiency of the component can be greatly improved.
Description
Technical Field
The invention relates to a support-free permanent template, in particular to a quick-hardening support-free permanent template frame and a preparation method thereof, belonging to the technical field of building materials.
Background
The materials used as the non-dismantling template at present mainly comprise: fiber reinforced polymer, wood-wool cement board, high molecular polymer insulation board, fiber reinforced cement-based material, steel-wire concrete thin-wall material, (steel-wire) active powder concrete and the like. However, non-cement based materials require later assembly, drilling or erection of support systems due to the high molding conditions and are expensive. Considering the integration of the complex reinforcing steel bar structure and the template, the combination process of the reinforcing steel bar structure and the template is simple and easy to operate, the combination result is firm, and the cement-based template material is a proper choice.
The support-free permanent formwork meets the requirements of building industrialization in the aspects of saving field labor, materials for turnover and the like, and because each wall formwork is 2-5, the production efficiency of a permanent formwork component is difficult to improve due to slow hardening of a common cement-based formwork, the compression resistance of the common cement-based formwork can reach more than 20MPa within 2h by using a rapid hardening formwork material, and the production efficiency of the component can be greatly improved.
For other permanent template materials in the current market, the thickness of the template material is thicker, the occupied building area is large, the distance between the two opposite-pulling connecting pieces is smaller, so that the number of the connecting pieces is large, the cost is high, and the template contains glass fiber gridding cloth or steel wire meshes, so that the template removing time is longer.
Disclosure of Invention
The invention aims to solve the problems and provide a quick-hardening support-free permanent formwork frame and a preparation method thereof.
The invention realizes the purpose through the following technical scheme: a quick-hardening support-free permanent formwork frame comprises a formwork; the formwork is respectively arranged on two sides of the steel bar, the height between the two formworks is the height of a wall body, the formworks are connected through a counter-pull connecting piece, and the material of the formwork comprises cement, natural sand, silica fume, a retarder, polycarboxylate superplasticizer powder, a defoaming agent, rubber powder and an accelerator;
the cement is 425-grade sulphoaluminate cement, the proportion of the cement is 450-500 parts, the proportion of the natural sand is 450-500 parts, the ratio of the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 10-30 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.1-0.2 part, the proportion of the polycarboxylate water reducer powder is 5-10 parts, the defoamer is used for reducing bubbles of the material, the proportion of the defoamer is 0.2-0.3 part, the proportion of the rubber powder is 4-5 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.1-0.2 part, and the material water-material ratio of the template is 0.13-0.14;
the preparation method comprises the preparation in a dry mixing mode or the preparation by mixing on site;
the preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials and storing the mixture in a dry place;
and step three, adding water according to the water-material ratio when in use, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product which can be molded.
Wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
The field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
and step two, fully mixing the raw materials according to the mixing proportion, adding water according to the water-material ratio, stirring, slowly stirring according to preset time, quickly stirring, and then molding.
Wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
As a still further scheme of the invention: the thickness of the template is 20 mm.
As a still further scheme of the invention: the counter-pull connecting pieces are distributed at intervals of 30cm in the transverse and vertical directions.
As a still further scheme of the invention: the concrete is characterized in that the proportion of the cement is 450 parts, the proportion of the natural sand is 450 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 10 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.1 part, the proportion of the polycarboxylate water reducer powder is 5 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.2 part, the proportion of the rubber powder is 4 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.1 part, and the material water-material ratio of the template is 0.13.
As a still further scheme of the invention: the concrete is characterized in that the proportion of the cement is 500 parts, the proportion of the natural sand is 500 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 30 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.2 part, the proportion of the polycarboxylate water reducer powder is 10 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.3 part, the proportion of the rubber powder is 5 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.2 part, and the material water-material ratio of the template is 0.14.
As a still further scheme of the invention: the concrete is characterized in that the proportion of the cement is 475 parts, the proportion of the natural sand is 475 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 15 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.15 part, the proportion of the polycarboxylate water reducer powder is 8 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.25 part, the proportion of the rubber powder is 4.5 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.15 part, and the material water-material ratio of the template is 0.135.
A preparation method of a fast-hardening support-free permanent template frame comprises the following steps:
the preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials and storing the mixture in a dry place;
and step three, adding water according to the water-material ratio when in use, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product which can be molded.
Wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min;
as a still further scheme of the invention: the slow stirring speed is 58r/min, and the fast stirring speed is 115 r/min.
A preparation method of a fast-hardening support-free permanent template frame comprises the following steps of preparing in-situ mixing:
the field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the raw materials according to a mixing ratio, adding water according to a water-material ratio, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product by molding;
wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
As a still further scheme of the invention: the slow stirring speed is 58r/min, and the fast stirring speed is 115 r/min.
The invention has the beneficial effects that: the cement in the template adopts 425-grade sulphoaluminate cement to realize the purpose of 2-hour compression resistance and 20MPa quick setting and hardening, the silica fume in the template is used for improving the later strength of the sulphoaluminate cement, the silica fume can fill the pores among cement particles and simultaneously generates gel with hydration products, the silica fume reacts with the cement under the alkaline environment to generate gel to improve the folding resistance, compression resistance and impermeability of the template material, the retarder added in the template is used for adjusting the initial setting time of the material, the sulphoaluminate cement is sensitive to temperature during construction, the setting time is shorter when the temperature is higher, the setting time is different from several minutes to tens of minutes, the setting time is too short, the template material cannot be molded, the setting time of the retarder can be prolonged on the premise of not influencing the later strength, the accelerator added in the template is used for shortening the hardening time of the material, the sulphoaluminate cement has shorter setting time, The hydration speed is high, but the condition of mold removal of 20MPa within 2 hours is not reached, higher early strength is achieved, the hydration speed of the quick-setting admixture needs to be improved by the quick-setting admixture, the defoaming agent added in the template is used for reducing bubbles of the material, gas can be introduced by stirring the template material during production, meanwhile, the surface tension of water can be increased by the water reducing agent to generate bubbles, more bubbles can enable the inner space of the template material to pass, the compactness of the template material is reduced, the final strength is reduced, the defoaming agent can reduce the bubbles of the material and increase the compactness of the material, the strength is further improved, the rubber powder added in the template has the functions of thickening, water retention and crack resistance, the lower specific volume of the water gel is easy to cause separation and layering of cement and sand in the template material, and simultaneously, the template material has large contact surface with air and is easy to lose water, so that the template cracks and the strength, the cost of the split connecting piece is reduced. The fluidity is high, the self-leveling is realized, the vibration is not needed during the template forming, the requirements of building industrialization are met in the aspects of saving field labor, saving turnover materials and the like, the production efficiency of a permanent template member is difficult to improve due to the slow hardening of the common cement-based template, the compression resistance of the common cement-based template can reach more than 20MPa within 2h by using a rapid hardening template material, and the production efficiency of the member can be greatly improved.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: 1. template, 2, reinforcing bar and 3, counter-pull connecting piece.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a fast-hardening support-free permanent formwork frame includes a formwork 1; the formwork 1 is respectively arranged on two sides of a steel bar 2, the height between the two formworks 1 is the height of a wall body, the formworks 1 are connected through a counter-pull connecting piece 3, and the material of the formwork 1 comprises cement, natural sand, silica fume, a retarder, polycarboxylate superplasticizer powder, an antifoaming agent, rubber powder and an accelerating agent;
the cement adopts 425-grade sulphoaluminate cement, realizes the purpose of 2-hour compression resistance and 20MPa quick setting and hardening, the proportion of the cement is 475 parts, the proportion of the natural sand is 475 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the silica fume can fill the pores among cement particles, and simultaneously generates gel with hydration products, the silica fume reacts with the cement under an alkaline environment to generate gel, the anti-bending, compression resistance and anti-permeability performances of a template material are improved, the proportion of the silica fume is 20 parts, the retarder is used for adjusting the initial setting time of the material, the sulphoaluminate cement is sensitive to temperature during construction, the setting time is shorter when the temperature is higher, the setting time is different from several minutes to more than ten minutes, the setting time is too short, the template material cannot enter a mold for molding, the setting time of the retarder can be prolonged on the premise of not influencing the later strength, and the proportion of the retarder is 0.15 part, the ratio of polycarboxylate water reducing agent powder is 7 parts, the defoaming agent is used for reducing the bubble of material, because the stirring of template material can introduce gas when production, and the water-reducing agent also can increase the surface tension of water simultaneously, and the gassing reduces its closely knit degree, and final strength reduces, and the defoaming agent can reduce the bubble of material, increases its closely knit degree, and then improves intensity, the ratio of defoaming agent is 0.25 part, the rubber powder has thickening, water retention, anti-cracking effect, and lower water glue specific volume easily leads to cement and grit separation layering in the template material, simultaneously because the template material is big with the air contact surface, easily loses water, leads to template fracture, intensity to reduce, the ratio of rubber powder is 4.5 parts, the accelerator is used for shortening the hardening time of material, and the sulphoaluminate cement has shorter setting time, The hydration speed is high, but the mold stripping condition of 20MPa is less than 2 hours, and in order to achieve higher early strength, a quick-setting admixture is needed to improve the hydration speed, the proportion of the quick-setting admixture is 0.15 part, and the material water-material ratio of the template 1 is 0.13;
the preparation method comprises the preparation in a dry mixing mode or the preparation by mixing on site;
the preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials, and storing the mixture in a dry place for not more than 3 months;
and step three, when the water-material mixing machine is used, water is added according to the water-material ratio, the mixture is slowly stirred for 1 minute and quickly stirred for 1 minute, and then the mixture is quickly stirred for 1 minute, so that the mixture can be molded.
Wherein the slow stirring speed is 60r/min, and the fast stirring speed is 120 r/min.
The field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
and step two, fully mixing the raw materials according to the mixing proportion, adding water according to the water-material ratio, stirring for 1 minute slowly during stirring, stirring for 1 minute quickly, then stirring for 1 minute quickly, and then molding.
Wherein the slow stirring speed is 60r/min, and the fast stirring speed is 120 r/min.
In the embodiment of the present invention, the thickness of the form 1 is 20mm, and the form has higher strength.
In the embodiment of the invention, the counter-pull connecting pieces 3 are distributed at intervals of 30cm in the horizontal and vertical directions, so that the counter-pull connecting pieces 3 are larger, the number of the counter-pull connecting pieces 3 can be reduced to a great extent, and the cost of the counter-pull connecting pieces 3 is reduced.
As a still further scheme of the invention: the concrete is characterized in that the proportion of the cement is 450 parts, the proportion of the natural sand is 450 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 10 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.1 part, the proportion of the polycarboxylate water reducer powder is 5 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.2 part, the proportion of the rubber powder is 4 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.1 part, and the material water-material ratio of the template is 0.13.
As a still further scheme of the invention: the concrete is characterized in that the proportion of the cement is 500 parts, the proportion of the natural sand is 500 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 30 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.2 part, the proportion of the polycarboxylate water reducer powder is 10 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.3 part, the proportion of the rubber powder is 5 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.2 part, and the material water-material ratio of the template is 0.14.
As a still further scheme of the invention: the concrete is characterized in that the proportion of the cement is 475 parts, the proportion of the natural sand is 475 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 15 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.15 part, the proportion of the polycarboxylate water reducer powder is 8 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.25 part, the proportion of the rubber powder is 4.5 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.15 part, and the material water-material ratio of the template is 0.135.
A preparation method of a fast-hardening support-free permanent template frame comprises the following steps:
the preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials and storing the mixture in a dry place;
and step three, adding water according to the water-material ratio when in use, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product which can be molded.
Wherein the slow stirring speed is 55-60r/min, and the preferred slow stirring speed is 58 r/min; the rapid stirring speed is 110-120r/min, and the preferred rapid stirring speed is 115 r/min.
A preparation method of a fast-hardening support-free permanent template frame comprises the following steps of preparing in-situ mixing:
the field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the raw materials according to a mixing ratio, adding water according to a water-material ratio, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product by molding;
wherein the slow stirring speed is 55-60r/min, and the preferred slow stirring speed is 58 r/min; the rapid stirring speed is 110-120r/min, and the preferred rapid stirring speed is 115 r/min.
In the embodiment of the invention, the defoaming agent is used for reducing the bubbles of the material, gas is introduced when the template material is stirred during production, and simultaneously the water reducing agent can increase the surface tension of water to generate bubbles, so that more bubbles can enable the internal gaps of the template material to pass, the compactness of the template material is reduced, the final strength is reduced, and the defoaming agent can reduce the bubbles of the material, increase the compactness of the template material and further improve the strength.
In the embodiment of the invention, the glue powder has the functions of thickening, water retention and cracking resistance, the separation and layering of cement and sand in the template material are easily caused by the lower specific volume of the glue, and the cracking and strength reduction of the template are caused by the fact that the template material is easy to lose water due to the large contact surface with air.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A quick-hardening, support-free, permanent formwork frame, characterized in that: comprises a template (1); the formworks (1) are respectively arranged on two sides of the steel bar (2), the height between the two formworks (1) is the height of a wall body, and the formworks (1) are connected through a counter-pull connecting piece (3);
the template (1) is made of cement, natural sand, silica fume, a retarder, polycarboxylate superplasticizer powder, a defoaming agent, rubber powder and an accelerator;
the cement is 425-grade sulphoaluminate cement, the proportion of the cement is 450-500 parts, the proportion of the natural sand is 450-500 parts, the ratio of the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 10-30 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.1-0.2 part, the proportion of the polycarboxylate water reducing agent powder is 5-10 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.2-0.3 part, the proportion of the rubber powder is 4-5 parts, the quick-setting agent is used for shortening the hardening time of the material, the proportion of the quick-setting agent is 0.1-0.2 part, and the material water-material ratio of the template (1) is 0.13-0.14.
2. The quick setting, free-standing, permanent formwork frame as claimed in claim 1, wherein: the thickness of the template (1) is 20 mm.
3. The quick setting, free-standing, permanent formwork frame as claimed in claim 1, wherein: the counter-pull connecting pieces (3) are distributed at intervals of 30cm in the horizontal and vertical directions.
4. The quick setting, free-standing, permanent formwork frame as claimed in claim 1, wherein: the concrete is characterized in that the proportion of the cement is 450 parts, the proportion of the natural sand is 450 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 10 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.1 part, the proportion of the polycarboxylate water reducer powder is 5 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.2 part, the proportion of the rubber powder is 4 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.1 part, and the material water-material ratio of the template is 0.13.
5. The quick setting, free-standing, permanent formwork frame as claimed in claim 1, wherein: the concrete is characterized in that the proportion of the cement is 500 parts, the proportion of the natural sand is 500 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 30 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.2 part, the proportion of the polycarboxylate water reducer powder is 10 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.3 part, the proportion of the rubber powder is 5 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.2 part, and the material water-material ratio of the template is 0.14.
6. The quick setting, free-standing, permanent formwork frame as claimed in claim 1, wherein: the concrete is characterized in that the proportion of the cement is 475 parts, the proportion of the natural sand is 475 parts, the silica fume is used for improving the later strength of the sulphoaluminate cement, the proportion of the silica fume is 15 parts, the retarder is used for adjusting the initial setting time of the material, the proportion of the retarder is 0.15 part, the proportion of the polycarboxylate water reducer powder is 8 parts, the defoaming agent is used for reducing bubbles of the material, the proportion of the defoaming agent is 0.25 part, the proportion of the rubber powder is 4.5 parts, the accelerator is used for shortening the hardening time of the material, the proportion of the accelerator is 0.15 part, and the material water-material ratio of the template is 0.135.
7. The method for preparing a fast hardening support-free permanent template frame according to claim 1, wherein the template frame is prepared by dry mixing:
the preparation method of the dry mixing type comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the weighed raw materials and storing the mixture in a dry place;
and step three, adding water according to the water-material ratio when in use, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product which can be molded.
Wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
8. The method of claim 7, wherein the slow stirring speed is 58r/min and the fast stirring speed is 115 r/min.
9. A method for preparing a rapid hardening support-free permanent formwork frame according to claim 1, wherein the formwork frame preparation method comprises the steps of preparing in-situ mixing:
the field mixing preparation comprises the following steps:
step one, weighing raw materials with corresponding weights according to a mixing ratio;
step two, fully mixing the raw materials according to a mixing ratio, adding water according to a water-material ratio, slowly stirring according to preset time, and then quickly stirring, thus obtaining the product by molding;
wherein the slow stirring speed is 55-60r/min, and the fast stirring speed is 110-120 r/min.
10. The method of claim 9, wherein the slow stirring speed is 58r/min and the fast stirring speed is 115 r/min.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016088791A (en) * | 2014-10-31 | 2016-05-23 | 太平洋セメント株式会社 | Board for embedded form |
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