CN111002444A - Production method of decoration integrated prefabricated part - Google Patents
Production method of decoration integrated prefabricated part Download PDFInfo
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- CN111002444A CN111002444A CN201911202623.6A CN201911202623A CN111002444A CN 111002444 A CN111002444 A CN 111002444A CN 201911202623 A CN201911202623 A CN 201911202623A CN 111002444 A CN111002444 A CN 111002444A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/348—Moulds, cores, or mandrels of special material, e.g. destructible materials of plastic material or rubber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/38—Treating surfaces of moulds, cores, or mandrels to prevent sticking
- B28B7/384—Treating agents
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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
Abstract
The invention provides a production method of a decoration integrated prefabricated part, which comprises the following steps of; s1, manufacturing a corresponding mold according to the size of the prefabricated part by adopting a polyurethane soft mold; s2, cleaning the surface of the polyurethane flexible mold; s3, supporting a formwork; s4, spraying a composite release agent on the polyurethane soft mold; s5, pouring clear water self-compacting concrete; s6, curing the concrete prefabricated part to the designed strength; s7, detaching the polyurethane soft mold and cleaning the polyurethane soft mold; the compound release agent comprises: 12-20 parts of paraffin, 25-45 parts of silicone oil, 15-30 parts of fatty acid soap, 3-8 parts of high-carbon alcohol fatty acid ester compound and 5-15 parts of deionized water. The decoration integrated prefabricated part produced by the invention has good color stability, no obvious color difference and high surface smoothness, and can be used for medium and small sized special-shaped prefabricated parts with complex structures, the patterns are clear, and the flatness is good; and the adoption of the polyurethane soft mold can realize multiple turnover, thereby saving the cost.
Description
Technical Field
The invention relates to the field of buildings, in particular to a production method of a decoration integrated prefabricated part.
Background
In recent years, the building industry is gradually modernized, the green building concept prevails, and the natural and ecological environmental protection is realized
The concept of the building is greatly developed in the building design, ecological buildings and low-energy-consumption buildings become the trend of the times, and a plurality of assembly type buildings are gradually developed, wherein the decoration integration can be formed at one time in a factory, namely the production and the use are realized, the field construction procedures are reduced, the construction period is shortened, and the good economic benefit is achieved. The decoration integration is a novel prefabricated component, which mainly comprises a shear wall bearing structure, a heat insulation structure and an outer vertical face decoration structure. The decoration integrated prefabricated part is made of clear water finish concrete, and the prefabricated part with a more complex structure, a smaller size and a finer requirement is made.
The color stability, the smoothness and the flatness of the prior decorative integrated prefabricated part have integral deviation.
Disclosure of Invention
Aiming at the technical problems, the invention provides a production method of a decoration integrated prefabricated part, which is used for solving the problem that the color stability, the smoothness or the flatness of the decoration integrated prefabricated part has integral deviation in the prior art.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a production method of a decoration integrated prefabricated part comprises the following steps:
s1, manufacturing a corresponding mold according to the size of the prefabricated part by adopting a polyurethane soft mold;
s2, cleaning the surface of the polyurethane flexible mold;
s3, supporting a formwork;
s4, spraying a composite release agent on the polyurethane soft mold;
s5, pouring clear water self-compacting concrete;
s6, curing the concrete prefabricated part to the designed strength;
and S7, detaching the polyurethane soft mold and cleaning the polyurethane soft mold.
Further, the compound release agent comprises the following raw materials in parts by weight: 12-20 parts of paraffin, 25-45 parts of silicone oil, 15-30 parts of fatty acid soap, 3-8 parts of high-carbon alcohol fatty acid ester compound and 5-15 parts of deionized water.
Preferably, the compound release agent comprises the following raw materials in parts by weight: 16 parts of paraffin, 35 parts of silicone oil, 22 parts of fatty acid soap, 5 parts of higher alcohol fatty acid ester compound and 10 parts of deionized water.
Further, the preparation method of the compound release agent comprises the following steps: adding paraffin, silicone oil and fatty acid soap into a container according to corresponding parts by weight, heating to 50-70 ℃ for melting, adding a higher alcohol fatty acid ester compound and deionized water into the container according to corresponding parts by weight, uniformly mixing, heating to 80-90 ℃, stirring, and stirring to room temperature.
Further, the clear water self-compacting concrete comprises the following components in parts by weight:
cement: 356m3/kg
Fly ash: 152m3/kg
Medium coarse sand: 779m3/kg
Coarse aggregate: 914m3/kg
Additive: 14.2m3/kg。
Further, the technical parameters for the preparation of the fair-faced self-compacting concrete are as follows: the water-to-glue ratio is 0.36;
the cement is P.O42.5 cement with a specific surface area of 368m2Kg, standard consistency 28.8%;
the fly ash is F-class secondary fly ash;
the medium coarse sand is river sand medium sand, the fineness modulus is 2.6-2.8, the sand rate is 45-47%, and the bulk density is 1600kg/m3Apparent density of 2590kg/m3The mud content is 2.9 percent, and the mud block content is 1.5 percent;
the coarse aggregate is continuous graded broken stone with the particle size of 5-20 mm;
the additive is a polycarboxylic acid high-performance water reducing agent.
The invention has the beneficial effects that: the polyurethane soft mould is favorable for reducing the generation of bubbles on the surface of concrete in the using process, has good deformability, convenient mould removal and higher turnover frequency, and is favorable for saving the cost and controlling the quality; the clear water self-compacting concrete with the mixing ratio is adopted, so that the fluidity, the expansion degree and the collapse degree are integrally optimized, and a high-quality prefabricated part can be manufactured; the invention has the advantages that the fatty acid soap is added into the composite mold release agent, the stability is good, the anti-sticking and anti-corrosion properties are higher, the defoaming function can be improved by adding the high-carbon alcohol fatty acid ester composite, and the bubbles are further reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph showing slump, expansion and sand fineness modulus of the bare self-compacting concrete of the present invention.
FIG. 2 is a graph showing slump, expansion and sand ratio of the self-compacting concrete.
FIG. 3 is a slump, expansion-slurry fluidity curve of the fair-faced self-compacting concrete of the present invention.
FIG. 4 is a slump, expansion and slurry volume curve of the fair-faced self-compacting concrete of the present invention.
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 obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
A production method of a decoration integrated prefabricated part comprises the following steps;
s1, manufacturing a corresponding mold according to the size of the prefabricated part by adopting a polyurethane soft mold;
s2, cleaning the surface of the polyurethane flexible mold;
s3, supporting a formwork;
s4, spraying a composite release agent on the polyurethane soft mold;
s5, pouring clear water self-compacting concrete;
s6, curing the concrete prefabricated part to the designed strength;
and S7, detaching the polyurethane soft mold and cleaning the polyurethane soft mold.
The composite mold release agent comprises the following raw materials in parts by weight: 12-20 parts of paraffin, 25-45 parts of silicone oil, 15-30 parts of fatty acid soap, 3-8 parts of high-carbon alcohol fatty acid ester compound and 50-120 parts of deionized water. The preparation method of the composite release agent comprises the following steps: adding paraffin, silicone oil and fatty acid soap into a container according to corresponding parts by weight, heating to 50-70 ℃ for melting, adding a higher alcohol fatty acid ester compound and deionized water into the container according to corresponding parts by weight, uniformly mixing, heating to 80-90 ℃, stirring, and stirring to room temperature.
The clear water self-compacting concrete comprises the following components in parts by weight:
cement: 356m3/kg
Fly ash: 152m3/kg
Medium coarse sand: 779m3/kg
Coarse aggregate: 914m3/kg
Additive: 14.2m3/kg；
Wherein the clear water is self-compactingThe concrete has the following configuration technical parameters: the water-to-glue ratio is 0.36; the cement is P.O42.5 cement with a specific surface area of 368m2Kg, standard consistency 28.8%; the fly ash is F-class secondary fly ash; the medium coarse sand is river sand medium sand, the fineness modulus is 2.6-2.8, the sand rate is 45-47%, and the bulk density is 1600kg/m3Apparent density of 2590kg/m3The mud content is 2.9 percent, and the mud block content is 1.5 percent; the coarse aggregate is continuous graded broken stone with the particle size of 5-20 mm; the additive is a polycarboxylic acid high-performance water reducing agent.
Specifically, preparing a clean water self-compacting concrete raw material:
a, P.O42.5 cement is adopted as cement, and various performance indexes meet the requirements of GB175-2007 general Portland cement. The test results are as follows:
watch 1
And B, the fly ash is F-class secondary fly ash, and various performance indexes meet the requirements of GB/T1596-2005 fly ash for cement and concrete. The test results are as follows:
watch two
C, the medium coarse sand is river sand medium sand, all performance indexes meet the requirements of JGJ52-2006 Standard test method for quality of common concrete sandstone, and the test results are as follows:
watch III
D, the coarse aggregate is continuous graded crushed stone with the particle size of 5-20 mm, each performance index meets the requirements of JGJ52-2006 Standard test method for quality of common concrete sandstone, and the test result is as follows:
watch four
And E, the admixture adopts a polycarboxylic acid high-performance water reducing agent, each performance index meets the requirements of GB8076-2008 concrete admixture, and the test results are as follows:
watch five
The concrete mixture with different water-cement ratios is prepared from the materials according to different water mixing ratios, the mass ratio of a powder system, namely cement to fly ash, is 70:30, the mixing ratio of the admixture, namely fly ash, is determined mainly according to corresponding regulations and common concrete production data, the mixing amount of the admixture is determined on the basis of good workability of the mixture, the slump and the slump expansion are inspected, and the initial trial test values are as follows:
watch six
Wherein w represents water;
and (4) analyzing results: under the condition that the water consumption is not changed greatly and the fluidity of the slurry is reduced, the fluidity of the concrete mixture is still obviously improved along with the improvement of the water-cement ratio. The composition change of the concrete mixture is analyzed, and the grout bone ratio of the concrete mixture is increased along with the reduction of the water cement ratio, namely the content of the grout in the mixture is increased (the grout refers to the mixture formed by cement, admixture, water and additive in the concrete together). Thus, the slurry volumes of each group were calculated and tested for slurry fluidity using the truncated cone circular mold slurry cleaning test, and the results are given in the table above. Comparing the data, the change of the slurry volume has great influence on the fluidity of the concrete mixture, and the larger the slurry volume is, the better the fluidity is.
Under the condition of fully considering economy and workability, the water-cement ratio is selected to be 0.36, the coarse aggregate gradation and the powder proportion are fixed, and an orthogonal experiment is carried out according to four factors of the size of the slurry, the fluidity of the slurry, the sand rate and the fineness modulus of the sand. 5-20 continuous graded broken stones are selected as coarse aggregates, XH-10 is selected as an additive, and the proportion (mass ratio) of fixed powder in the orthogonal test part is C: FA = 70: 30. firstly, designing the slurry by adopting a cone section mould test, adjusting the fluidity of the slurry by adjusting the using amount of an additive under the condition of keeping the powder proportion unchanged, so that the fluidity reaches a test set value, thereby determining the proportion of each component of the slurry, and then calculating the mixture proportion by adopting a full volume method according to the volume and the sand rate of the slurry. The factor levels for the orthogonal experiments are tabulated below:
watch seven
The orthogonal test arrangement is shown in the following table:
table eight
Test results and analysis: the orthogonal test matching ratio and the results are shown in the following table;
the results of the test were analyzed by range analysis, as shown in the following table:
a range analysis curve is plotted as shown in fig. 1.
Combining range analysis and chart analysis, the size of the slurry has the greatest influence on the fluidity of the concrete and plays a leading role, the sand ratio is 45-47% under the condition of 0.36 water-cement ratio, the sand fineness modulus is between.2.6-2.8, the flow of the concrete is most favorable, and under the condition of not causing segregation, the larger the fluidity of the slurry is, the better the fluidity of the concrete is, but the contribution is smaller than the volume consumption of the slurry.
On the basis of the above tests, the slurry volume of 0.36, the slurry fluidity of 300, the sand ratio of 0.46 and the sand fineness modulus of 2.7 were selected. The reference fit is thus obtained as follows:
finally, the clear water self-compacting concrete has the best comprehensive performance by adopting the mixing proportion.
The decorative integrated prefabricated part adopts the clean water self-compaction, can effectively improve compactness, fluidity and filling property, and can perfectly adapt to various special-shaped components.
Secondly, just select suitable mould, the common template of selecting at present has wooden model, steel mould, soft mould of polyurethane, will analyze the mould shaping effect one by one below:
a. a wood die with the size of 700 x 500mm is adopted, a relief sculpture process is selected, the sculpture depth is 3mm, and the sculpture pattern is a landscape painting. After the mould is carved and formed, firstly, the surface of the mould is coated with the template varnish, then the sealing paint is coated to prevent water, after the paint is completely dried, angle steel is used for supporting the side mould, an oil release agent is sprayed, concrete is poured, the mould is maintained for 24 hours at the temperature of 25 ℃, after the mould is removed, the surface of the carved patterns is rough, the burrs are more, the pretreatment steps are complicated, the condition that the wood absorbs water exists, the serious mould sticking condition is easily caused in the mould removing process, the turnover rate of the mould is greatly reduced, and therefore the wood mould is not suitable for being used as a decorative mould.
b. Selecting a steel die with the modeling of ceramic tiles, wherein the size of the steel die is 400 x 300mm, and the construction steps are as follows: cleaning the surface of a mould, supporting a side mould, spraying a release agent, pouring concrete, maintaining, removing the mould and cleaning the mould. After the mould is removed, the surface lines of the ceramic tile imitation component manufactured by the steel mould are clear, the color is uniform, and the mould is removed simply and conveniently. Further adopt the line more complicated, the mould size increases the steel mould test, the mould size is 600 x 300mm to adopt above-mentioned construction steps, the analysis of form removal result: the prefabricated decorative board surface line that adopts the steel form preparation is clear, and initial stage result of use is better, discovers in the use, along with the increase of use number of times, the template surface easily rusts and is difficult to handle, and line edges and corners position easily produces the burr moreover to influence the whole effect of concrete. Therefore, the steel template is not suitable for making the model with complex lines.
c. Polyurethane soft mould, mould size 500 x 500 mm. Still according to the construction steps, after the form removal, the polyurethane soft mould is found to be a soft material, so that the generation of bubbles on the surface of concrete is reduced in the using process, the form removal is convenient, and the turnover frequency is high.
The conclusion is that the flexible polyurethane mold has the advantages of good deformability, capability of reducing surface bubbles, convenience in mold removal, multiple turnover times and the like.
Then, selection of release agent:
initially, according to the construction method, an oil release agent and a water release agent are respectively adopted for testing, under the same test conditions, after demolding, comparison shows that no bubbles exist on the surface of the water release agent, but the water release agent is easy to stick to a mold, and the oil release agent is adopted, so that the demolding is simple, but a small amount of bubbles exist on the surface, and defects exist in any demolding agent, so that a compound release agent which can reduce bubbles, is difficult to stick to the mold and is simple to demold needs to be prepared.
Because the paraffin is low in price, when the paraffin is used for a mold release agent, the paraffin is convenient to use, non-toxic and good in mold release effect, and the surface of a workpiece can be smooth, the paraffin is selected firstly; the silicone oil has excellent heat resistance, electric insulation, weather resistance, hydrophobicity, physiological inertia and smaller surface tension, in addition, the silicone oil also has low viscosity-temperature coefficient, higher compression resistance, and certain varieties also have radiation resistance, and the silicone oil is selected; among the mold release agents, the use of a surfactant is also indispensable because it has anti-sticking, emulsifying, defoaming, and solubilizing, preservative effects, and therefore, fatty acid soap is also selected as the surfactant; in order to reduce air bubbles, a high-carbon alcohol fatty acid ester compound is added into the release agent so as to reduce the air bubbles; finally, a small amount of deionized water is added to facilitate the blending of the liquid release agent.
Through repeated tests, the compound release agent with better effect is prepared by selecting proper raw material proportion.
Example 1:
the composite mold release agent comprises the following raw materials in parts by weight: 16 parts of paraffin, 35 parts of silicone oil, 22 parts of fatty acid soap, 5 parts of higher alcohol fatty acid ester compound and 10 parts of deionized water.
The preparation method of the compound release agent comprises the following steps: adding 16 parts of paraffin, 35 parts of silicone oil and 22 parts of fatty acid soap into a container, heating to 70 ℃ for melting, adding 5 parts of higher alcohol fatty acid ester compound and 10 parts of deionized water, uniformly mixing, heating to 90 ℃, stirring, slowly emulsifying and phase-inverting, gradually slowing down the stirring speed along with the reduction of the emulsifying temperature, and stirring to room temperature to obtain the product.
Then the prepared composite mold release agent is applied to the production of small and medium-sized special-shaped decoration integrated prefabricated parts, and the production is carried out according to the following steps:
s1, manufacturing a corresponding mold according to the size of the prefabricated part by adopting a polyurethane soft mold;
s2, cleaning the surface of the polyurethane flexible mold;
s3, supporting a formwork;
s4, spraying a composite release agent on the polyurethane soft mold;
s5, pouring clear water self-compacting concrete;
s6, curing the concrete prefabricated part to the designed strength;
and S7, detaching the polyurethane soft mold and cleaning the polyurethane soft mold.
Wherein, the clear water self-compacting concrete has the following mixing ratio:
cement: 356m3/kg
Fly ash: 152m3/kg
Medium coarse sand: 779m3/kg
Coarse aggregate: 914m3/kg
Additive: 14.2m3/kg。
Specifically, the technical parameters for preparing the fair-faced self-compacting concrete are as follows: the water-to-glue ratio is 0.36; the cement is P.O42.5 cement with a specific surface area of 368m2Kg, standard consistency 28.8%; the fly ash is F-class secondary fly ash; the medium coarse sand is river sand medium sand, the fineness modulus is 2.6-2.8, the sand rate is 45-47%, and the bulk density is 1600kg/m3Apparent density of 2590kg/m3The mud content is 2.9 percent, and the mud block content is 1.5 percent; the coarse aggregate is continuous graded broken stone with the particle size of 5-20 mm; the additive is a polycarboxylic acid high-performance water reducing agent.
When the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are adopted for mold removal, the mold removal is simple when the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are produced according to the construction method, the produced decoration integrated prefabricated part can effectively control the color stability, the color is uniform, no obvious color difference exists, no repair trace exists basically, the maximum bubble diameter is not more than 5mm, the depth is not more than 1mm, and the area of each square meter of bubbles is not more than 8cm2The decorative integrated prefabricated part has the advantages of no slurry leakage, flowing and scouring traces, no oil marks, ink marks, rust spots and powder, neat arrangement when the split bolts are aligned, dense hole plugging, clear and smooth edges and corners of the concave holes, clear patterns on the surface of the decorative integrated prefabricated part, high smoothness and good flatness.
Example 2:
the difference from the embodiment 1 is that the compound release agent comprises the following raw materials in parts by weight: 20 parts of paraffin, 45 parts of silicone oil, 30 parts of fatty acid soap, 8 parts of higher alcohol fatty acid ester compound and 15 parts of deionized water. The composite mold release agent is prepared by heating paraffin 20 parts, silicone oil 45 parts and fatty acid soap 30 parts in a container to 70 deg.C for melting, adding fatty acid ester complex of higher alcohol 8 parts and deionized water 15 parts, mixing, heating to 90 deg.C, stirring, slowly emulsifying, phase inversion, gradually slowing down the stirring speed with the decrease of the emulsifying temperature, and stirring to room temperature to obtain the final product.
And then applying the prepared composite mold release agent to the production of small and medium-sized special-shaped decoration integrated prefabricated parts, and producing according to the production steps. When the mold is removed, the invention is adoptedWhen the self-compacting clear water concrete, the composite release agent and the polyurethane soft mold are produced according to the construction method, the mold is simple to remove, the produced decoration integrated prefabricated part can effectively control the color stability, the color is uniform, no obvious color difference exists, no repair trace exists basically, the maximum bubble diameter is not more than 6mm, the depth is not more than 1mm, and the area of each square meter of bubbles is not more than 9cm2The decorative integrated prefabricated part has the advantages of no slurry leakage, flowing and scouring traces, no oil marks, ink marks, rust spots and powder, neat arrangement when the split bolts are aligned, dense hole plugging, clear and smooth edges and corners of the concave holes, clear patterns on the surface of the decorative integrated prefabricated part, high smoothness and good flatness.
Example 3:
the difference from the embodiment 1 is that the compound release agent comprises the following raw materials in parts by weight: 12 parts of paraffin, 25 parts of silicone oil, 15 parts of fatty acid soap, 3 parts of higher alcohol fatty acid ester compound and 5 parts of deionized water. A composite demoulding agent is prepared through heating paraffin wax (12 portions), silicon oil (25 portions) and fatty acid soap (15 portions) in a container to 70 deg.C for smelting, adding higher alcohol-fatty acid ester (3 portions) and deionized water (5 portions), mixing, heating to 90 deg.C, stirring, slowly emulsifying, phase inversion, and stirring to room temp.
And then applying the prepared composite mold release agent to the production of small and medium-sized special-shaped decoration integrated prefabricated parts, and producing according to the production steps. When the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are adopted for mold removal, the mold removal is simple when the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are produced according to the construction method, the produced decoration integrated prefabricated part can effectively control the color stability, the color is uniform, no obvious color difference exists, no repair trace exists basically, the maximum bubble diameter is not more than 5mm, the depth is not more than 1.5mm, and the area of each square meter of bubbles is not more than 8cm2No slurry leakage, flowing and scouring marks, no oil marks, ink marks and rusty spots, no powder, orderly arrangement when the split bolts are aligned, dense hole plugging, clear and smooth edges and corners of the concave holes, clear patterns on the surface of the integrated decorative prefabricated part, high finish degree and good flatness。
Example 4:
the difference from the embodiment 1 is that the preparation method of the compound release agent is firstly prepared according to the following proportion, 16 parts of paraffin, 35 parts of silicone oil and 22 parts of fatty acid soap are added into a container and heated to 50 ℃ for melting, 5 parts of higher alcohol fatty acid ester compound and 10 parts of deionized water are added, the mixture is uniformly mixed and heated to 80 ℃ and stirred, after the mixture is slowly emulsified and phase-inverted, the stirring speed is gradually reduced along with the reduction of the emulsifying temperature, and the product is obtained after the mixture is stirred to the room temperature.
And then applying the prepared composite mold release agent to the production of small and medium-sized special-shaped decoration integrated prefabricated parts, and producing according to the production steps. When the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are adopted for mold removal, the mold removal is simple when the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are produced according to the construction method, the produced decoration integrated prefabricated part can effectively control the color stability, the color is uniform, no obvious color difference exists, no repair trace exists basically, the maximum bubble diameter is not more than 6mm, the depth is not more than 1.5mm, and the area of each square meter of bubbles is not more than 10cm2The decorative integrated prefabricated part has the advantages of no slurry leakage, flowing and scouring traces, no oil marks, ink marks, rust spots and powder, neat arrangement when the split bolts are aligned, dense hole plugging, clear and smooth edges and corners of the concave holes, clear patterns on the surface of the decorative integrated prefabricated part, high smoothness and good flatness.
Example 5:
the difference from the embodiment 1 is that the preparation method of the compound release agent is firstly prepared according to the following proportion, 20 parts of paraffin, 45 parts of silicone oil and 30 parts of fatty acid soap are added into a container and heated to 50 ℃ for melting, 8 parts of higher alcohol fatty acid ester compound and 15 parts of deionized water are added, the mixture is uniformly mixed and heated to 80 ℃ and stirred, after the mixture is slowly emulsified and phase-inverted, the stirring speed is gradually reduced along with the reduction of the emulsifying temperature, and the product is obtained after the mixture is stirred to the room temperature.
And then applying the prepared composite mold release agent to the production of small and medium-sized special-shaped decoration integrated prefabricated parts, and producing according to the production steps. When the form is removed, the self-compacting fair-faced concrete and the compound concrete are discoveredWhen the mold release agent and the polyurethane soft mold are combined and produced according to the construction method, the mold release is simple, the produced decoration integrated prefabricated part can effectively control the color stability, the color is uniform, no obvious color difference exists, no repair trace exists basically, the maximum bubble diameter is not more than 6mm, the depth is not more than 1mm, and the area of each square meter of bubbles is not more than 11cm2The decorative integrated prefabricated part has the advantages of no slurry leakage, flowing and scouring traces, no oil marks, ink marks, rust spots and powder, neat arrangement when the split bolts are aligned, dense hole plugging, clear and smooth edges and corners of the concave holes, clear patterns on the surface of the decorative integrated prefabricated part, high smoothness and good flatness.
Example 6:
the difference from the example 1 is that the composite mold release agent is prepared by selecting the following proportion: adding 12 parts of paraffin, 25 parts of silicone oil and 15 parts of fatty acid soap into a container according to corresponding parts by weight, heating to 50 ℃ for melting, adding 3 parts of higher alcohol fatty acid ester compound and 5 parts of deionized water into the container according to corresponding parts by weight, uniformly mixing, heating to 80 ℃, stirring, slowly emulsifying and phase-inverting, gradually slowing down the stirring speed along with the reduction of the emulsifying temperature, and stirring to room temperature to obtain the product.
And then applying the prepared composite mold release agent to the production of small and medium-sized special-shaped decoration integrated prefabricated parts, and producing according to the production steps. When the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are adopted for mold removal, the mold removal is simple when the self-compacting clear water concrete, the composite mold release agent and the polyurethane soft mold are produced according to the construction method, the produced decoration integrated prefabricated part can effectively control the color stability, the color is uniform, no obvious color difference exists, no repair trace exists basically, the maximum bubble diameter is not more than 6mm, the depth is not more than 2mm, and the area of each square meter of bubbles is not more than 10cm2The decorative integrated prefabricated part has the advantages of no slurry leakage, flowing and scouring traces, no oil marks, ink marks, rust spots and powder, neat arrangement when the split bolts are aligned, dense hole plugging, clear and smooth edges and corners of the concave holes, clear patterns on the surface of the decorative integrated prefabricated part, high smoothness and good flatness.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The production method of the decoration integrated prefabricated part is characterized by comprising the following steps of:
s1, manufacturing a corresponding mold according to the size of the prefabricated part by adopting a polyurethane soft mold;
s2, cleaning the surface of the polyurethane flexible mold;
s3, supporting a formwork;
s4, spraying a composite release agent on the polyurethane soft mold;
s5, pouring clear water self-compacting concrete;
s6, curing the concrete prefabricated part to the designed strength;
and S7, detaching the polyurethane soft mold and cleaning the polyurethane soft mold.
2. The production method of the decoration-integration prefabricated part according to claim 1, wherein the compound release agent comprises the following raw materials in parts by weight: 12-20 parts of paraffin, 25-45 parts of silicone oil, 15-30 parts of fatty acid soap, 3-8 parts of high-carbon alcohol fatty acid ester compound and 5-15 parts of deionized water.
3. The production method of the decoration-integration prefabricated part according to claim 2, wherein the compound release agent comprises the following raw materials in parts by weight: 16 parts of paraffin, 35 parts of silicone oil, 22 parts of fatty acid soap, 5 parts of higher alcohol fatty acid ester compound and 10 parts of deionized water.
4. The production method of the decoration-integration prefabricated part according to claim 2 or 3, wherein the preparation method of the composite mold release agent comprises the following steps: adding paraffin, silicone oil and fatty acid soap into a container according to corresponding parts by weight, heating to 50-70 ℃ for melting, adding a higher alcohol fatty acid ester compound and deionized water into the container according to corresponding parts by weight, uniformly mixing, heating to 80-90 ℃, and stirring to room temperature.
5. The production method of the decoration-integrated prefabricated part according to claim 1, 2 or 3, wherein the mix ratio of the fair-faced self-compacting concrete is as follows:
cement: 356m3/kg
Fly ash: 152m3/kg
Medium coarse sand: 779m3/kg
Coarse aggregate: 914m3/kg
Additive: 14.2m3/kg。
6. The method for producing a decoration-integrated prefabricated part according to claim 5, wherein the technical configuration parameters of the fair-faced self-compacting concrete are as follows: the water-to-glue ratio is 0.36;
the cement is P.O42.5 cement with a specific surface area of 368m2Kg, standard consistency 28.8%;
the fly ash is F-class secondary fly ash;
the medium coarse sand is river sand medium sand, the fineness modulus is 2.6-2.8, the sand rate is 45-47%, and the bulk density is 1600kg/m3Apparent density of 2590kg/m3The mud content is 2.9 percent, and the mud block content is 1.5 percent;
the coarse aggregate is continuous graded broken stone with the particle size of 5-20 mm;
the additive is a polycarboxylic acid high-performance water reducing agent.
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