Manufacturing process of concrete cultural and creative product

Abstract

The invention discloses a concrete venture and creativity product manufacturing process which comprises the following preparation raw materials in parts by mass: 100 parts of water, 300-400 parts of cement and 130-170 parts of sand. The water, the cement and the sand are added into the mold according to the mass ratio and stirred for the first time, the speed of the first time of stirring is 200-500 r / min, and stirring is conducted for 3-5 min; a water reducing agent and a defoaming agent are added according to the mass of the cement in the mold, the mass ratio of the water reducing agent to the cement is 1: (90-100), and the mass ratio of the defoaming agent to the cement is 1: (100-150); stirring for the second time at the speed of 150 to 300 r / min for 2 to 4 minutes; after the second-time stirring is completed, standing is conducted for 1-2 min, then third-time stirring is conducted, the third-time stirring speed is consistent with the second-time stirring speed, and the third-time stirring time is 1-2 min; pouring the creative product at the first time after the third stirring is completed; through the accurate raw material ratio and the repeated stirring technology, it is guaranteed that the concrete creative product is smooth in surface, clear in character and sufficient in strength, and the aesthetic and practical requirements of the creative product are met.

Description

Technical Field

[0001] The present invention relates to the technical field of concrete handicrafts, and in particular to a process for producing concrete cultural and creative products. Background Art

[0002] Concrete crafts are artworks or decorations made of concrete as the main material. Due to their unique texture and plasticity, they have been widely used in indoor and outdoor decoration, garden landscape, public facilities and other fields. However, the traditional production process of concrete cultural and creative products has shortcomings in material ratio and production process, resulting in unstable product quality and performance, affecting the beauty and practicality of the products.

[0003] Therefore, there is an urgent need for a concrete cultural and creative product manufacturing process to solve the technical problems existing in the above-mentioned prior art. Summary of the invention

[0004] The present invention overcomes the deficiencies of the prior art and provides a process for producing a concrete cultural and creative product.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a process for producing concrete cultural and creative products, which comprises the following raw materials by weight:

[0006] 100 parts water, 300-400 parts cement, 130-170 parts sand;

[0007] Add the water, cement and sand into the mold according to the mass ratio, and perform the first stirring, the speed of the first stirring is 200-500r / min, and the stirring is performed for 3-5min; add a water reducer and a defoamer according to the mass of the cement in the mold, the mass ratio of the water reducer to the cement is 1:90-100, and the mass ratio of the defoamer to the cement is 1:100-150;

[0008] After adding the water reducing agent and the defoaming agent, a second stirring is performed, the speed of the second stirring is 150-300 r / min, and the stirring is performed for 2-4 minutes; after the second stirring is completed, it is allowed to stand for 1-2 minutes, and then a third stirring is performed, the speed of the third stirring is consistent with the speed of the second stirring, and the third stirring time is 1-2 minutes; the cultural and creative products are poured as soon as possible after the third stirring is completed.

[0009] In a preferred embodiment of the present invention, after casting and forming, the cultural and creative product is subjected to natural curing, the curing temperature is 20-25° C., and the curing time is 24-72 hours.

[0010] In a preferred embodiment of the present invention, after the natural curing is performed for 10 to 15 hours, hot air curing is added, and the temperature of the hot air curing is 15 to 20° C., the wind speed is 2 to 5 m / s, and the time is 6 to 8 hours.

[0011] In a preferred embodiment of the present invention, when preparing the raw materials, pigments or decorative particles are prepared, and the mass ratio of the pigments or decorative particles to the cement is 1:50-80. The pigments or decorative particles are added before the first stirring and added to the mold together with the water, cement and sand.

[0012] In a preferred embodiment of the present invention, before pouring, the inside of the mold is pretreated, including cleaning the inner surface of the mold, applying a release agent or laying a release paper.

[0013] In a preferred embodiment of the present invention, the water reducer is a sulfonate water reducer, a polyvinyl alcohol water reducer, or a starch ether water reducer; and the defoamer is a polyether defoamer or a polyether-modified silicon defoamer.

[0014] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0015] (1) Through precise raw material ratios and multiple mixing processes, the surface of concrete cultural and creative products is ensured to be smooth, the text is clear, and the strength is sufficient to meet the aesthetic and practical needs of cultural and creative products. By adding water reducers and defoamers, the bubbles and pores in the concrete can be effectively reduced, thereby improving the overall quality and durability of the product.

[0016] (2) By pouring the cultural and creative products immediately after the third mixing, the aggregates in the concrete will form a certain layer distribution in the concrete due to factors such as gravity and mixing intensity, thereby forming a gradient effect on the outer surface of the cultural and creative products after casting.

[0017] (3) The manufacturing process of three mixing and standing steps optimizes the mixing uniformity and fluidity of the concrete, making the pouring process smoother and reducing material waste. At the same time, applying a release agent or laying release paper in the mold pretreatment step increases the demoulding success rate of the product and reduces the defective rate in the production process.

[0018] (4) By combining natural curing with hot air curing, the curing time of cultural and creative products is shortened and production efficiency is improved, thereby ensuring the stability and consistency of the products during the curing process and further improving product quality and production efficiency.

[0019] (5) The production process provided by the present invention can also add pigments or decorative particles when preparing raw materials, providing a rich selection of colors and patterns for cultural and creative products, enhancing the creativity and personalization of the products, so that the production process of the present invention can be widely used in various cultural, artistic and creative fields to meet the diverse needs of consumers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a production flow chart of a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0024] like Figure 1 As shown, a process for making a concrete cultural and creative product includes the following raw materials, calculated by weight:

[0025] 100 parts water, 300-400 parts cement, 130-170 parts sand;

[0026] Add water, cement and sand into the mold according to the mass ratio and stir for the first time. The speed of the first stirring is 200-500r / min and the stirring time is 3-5min. Add water reducer and defoamer according to the mass of cement in the mold. The mass ratio of water reducer to cement is 1:90-100, and the mass ratio of defoamer to cement is 1:100-150. The addition of water reducer significantly improves the fluidity of concrete, reduces the water consumption, and thus improves the strength of concrete. The addition of defoamer effectively removes bubbles in concrete and improves the surface finish of the product.

[0027] After adding the water reducer and defoamer, carry out the second stirring at a speed of 150-300 r / min for 2-4 minutes. After the second stirring is completed, let it stand for 1-2 minutes and then carry out the third stirring. The third stirring speed is the same as the second stirring speed, and the third stirring time is 1-2 minutes. After the third stirring is completed, pour the cultural and creative products as soon as possible.

[0028] It should be further explained that standing still is conducive to the full reaction between the raw materials and the further discharge of bubbles.

[0029] It should be emphasized that "the first time" here refers to the pouring of cultural and creative products immediately and without delay after the third mixing is completed. It means that after the mixing process is completed, the mixture should be poured into the mold or designated location quickly and continuously to ensure the uniformity and quality of the mixture.

[0030] The stirred mixture will begin to stratify or change during the static process, especially after the addition of water reducers and defoamers. The effect of these additives will weaken over time. Therefore, pouring immediately after mixing can maximize the uniformity of the mixture and ensure the final quality of the cultural and creative products.

[0031] If some materials are left for too long after mixing, they will settle, resulting in uneven distribution of materials during pouring. This can be avoided by pouring as soon as possible.

[0032] In some cases, the chemical components of the mixture will begin to react, especially after the water reducer is added. Timely pouring can ensure that these reactions are controlled and avoid adversely affecting the performance of the cultural and creative product.

[0033] Pouring right away can also reduce waiting time and improve work efficiency, especially in large-scale production or when multiple batches need to be completed quickly.

[0034] After pouring and forming, the cultural and creative products are naturally cured at a temperature of 20-25°C for 24-72 hours. After 10-15 hours of natural curing, hot air curing is added at a temperature of 15-20°C, a wind speed of 2-5m / s, and a time of 6-8 hours.

[0035] Timely pouring ensures the molding quality of concrete. The combination of natural curing and hot air curing not only ensures the full hardening of concrete, but also shortens the curing time. Appropriate curing temperature and wind speed help stabilize the internal structure of concrete and improve the durability of the product.

[0036] When preparing raw materials, prepare pigments or decorative particles, the mass ratio of pigments or decorative particles to cement is 1:50-80, and the pigments or decorative particles are added before the first stirring, and added to the mold together with water, cement and sand. Before pouring, pre-treat the mold, including cleaning the inner surface of the mold, applying a release agent or laying a release paper.

[0037] The water reducer is a sulfonate water reducer, a polyvinyl alcohol water reducer or a starch ether water reducer; the defoamer is a polyether defoamer or a polyether modified silicon defoamer.

[0038] In a preferred embodiment, through this technical solution, a cultural and creative handicraft with a gradient effect on the outer surface can be cast and prepared.

[0039] Specifically, the mixing uniformity and fluidity of concrete are optimized through three mixing and standing steps. The first mixing allows the raw materials to be initially mixed, the second mixing further improves the mixing uniformity after adding water reducer and defoamer, and the third mixing ensures that the concrete reaches the best state before pouring. The standing step helps the raw materials to fully react and further discharge bubbles, thereby ensuring the quality and performance of the final product.

[0040] Pigments or decorative particles can be added when preparing the raw materials. It is important that these pigments or particles can be added to the mold together with water, cement and sand before the first mixing. Due to the mixing and pouring process of concrete, the pigments or particles will be evenly distributed in the concrete, but due to factors such as gravity and mixing intensity, pigments or particles of different colors may form a certain layer distribution in the concrete, thus forming a gradient effect after pouring.

[0041] By selecting different pigments or decorative particles and adjusting their addition amounts and mixing ratios, cultural and creative crafts in a variety of colors and patterns can be produced to meet consumers' diverse demands for gradient effects.

[0042] Before pouring, the mold is pre-treated, including cleaning the inner surface of the mold, applying a release agent or laying release paper. These steps help ensure that the concrete is evenly distributed in the mold, prevent the generation of bubbles and pores, and increase the success rate of demoulding of the product.

[0043] The cultural and creative products were poured immediately after the third mixing to ensure the quality of concrete molding. Timely pouring helps to avoid performance degradation or deterioration caused by concrete staying in the mold for a long time.

[0044] Combination of natural curing and hot air curing: After casting, the cultural and creative products are cured by a combination of natural curing and hot air curing. Natural curing helps the initial hardening of concrete and the stability of the internal structure, while hot air curing further accelerates the hardening process of concrete and shortens the curing time. This combined curing method ensures the full hardening of concrete and improves production efficiency.

[0045] Embodiment 1

[0046] Making molds: First, the modeled "Tongbao" (mold model) is 3D printed, and the printing material can be resin or nylon. The next step is to send the 3D printed model to the laboratory, cut it into small pieces of the right size with foam board, surround it and use it as an outer mold, and finally stick it tightly on the glass with foam glue.

[0047] Apply silicone oil to the 3D printed model, then prepare silicone and add silicone curing agent, then inject silicone into the mold and put it into the bellows. It takes about four hours for the mold to take shape. De-mold the 3D model that was printed at the beginning to get a complete silicone mold.

[0048] Raw materials preparation: water: 120g; cement: 392g; sand: 158g;

[0049] Water reducer: Use sulfonate water reducer. According to the mass ratio of water reducer to cement of 1:90, the dosage range of water reducer is calculated to be 4.36g.

[0050] Defoaming agent: Use a polyether defoaming agent. Based on the mass ratio of defoaming agent to cement of 1:100, the defoaming agent dosage range is calculated to be 3.92g.

[0051] Production steps: Clean the inner surface of the mold and apply a release agent to ensure that the cultural and creative product can be demolded smoothly.

[0052] First mixing: Add 120g of water, 392g of cement and 158g of sand into the mold and mix at 300r / min for 4min.

[0053] According to the calculated amount, 4.36 g of water reducing agent and 3.92 g of defoaming agent were added, and the mixture was stirred for the second time at a speed of 200 r / min for 3 min.

[0054] After the stirring is completed, let it stand for 1 minute, and then stir it for the third time at the same speed (200r / min) as the second time, and the stirring time is 1 minute.

[0055] After the third mixing is completed, the cultural and creative products should be poured immediately to ensure that the concrete is evenly mixed and has good fluidity.

[0056] After casting, the cultural and creative products are naturally cured at a temperature of 20°C and a curing time of 72 hours.

[0057] After 12 hours of natural curing, hot air curing was added. The temperature of hot air curing was 18°C, the wind speed was 3m / s, and the time was 7 hours.

[0058] Through the above steps, concrete cultural and creative products with smooth surface and clear text can be produced.

[0059] Comparative Example 1

[0060] First experiment:

[0061] We tested the existing casting ratio of cultural and creative products once, and found that there was a lot of waste after casting. There were bubbles on the surface after demoulding, the text was uneven, the strength was not very high, and it broke after two to three days of curing.

[0062] Second experiment

[0063] The material ratio was reduced on the original basis, and sand was added to enhance the strength and avoid material waste. After demolding, the surface was smooth, the fluidity was very poor, and the text was much worse than the first time. After maintenance, it was found that the bottom was slightly broken.

[0064] The third experiment

[0065] Considering the insufficient strength in the first time and insufficient fluidity in the second time, more sand and water were added in the third time. After demolding, the surface was smooth, but the text was still partially blurred. No breakage was found after curing.

[0066] The fourth experiment

[0067] The ratio of sand to water was increased. After demolding, the surface was found to be smooth, but the color was uneven. This was because too much sand was added, so the ratio of sand should be reduced next time. Since enough water was added in this experiment, the fluidity was very good, so the gaps in the text were obviously reduced. So in the next experiment, the ratio of sand should be reduced, and the water should be increased or decreased depending on the situation.

[0068] The fifth experiment

[0069] The sand ratio was reduced. After demoulding, the surface was smooth, with slight bubbles and gaps in the text. In the next experiment, the sand ratio will be further reduced, and it can be increased or decreased according to the actual situation.

[0070] The sixth experiment

[0071] Slightly reduce the sand ratio. The surface is smooth after demoulding. The text is almost complete at this time. There are small bubbles on the surface. Add more water in the next test, and the cement-sand ratio remains unchanged.

[0072] The experimental data of multiple experiments in Comparative Example 1 are shown in Table 1:

[0073] Table 1

[0074]

[0075]

[0076] Example and Comparative Example 1 Data Analysis:

[0077] According to the analysis of the experimental data provided above, the following conclusions can be drawn:

[0078] From the first experiment to the sixth experiment, the material ratio has undergone significant changes. Initially, the first experiment used only cement and water without sand, which resulted in insufficient strength and surface problems. In subsequent experiments, the proportion of sand was gradually increased to enhance the strength of the material and reduce material waste.

[0079] By continuously reducing the amount of cement, increasing the amount of sand, and adjusting the proportion of water, the experimenters tried to find the best ratio combination to achieve a cultural and creative product with a smooth surface, clear text, and sufficient strength.

[0080] From the second experiment, with the addition of sand, the surface smoothness improved, but there were still problems such as unclear text and bubbles. These problems were gradually improved by continuously adding sand and adjusting the proportion of water.

[0081] In the first test, the product broke due to insufficient strength due to the use of only cement and water. With the addition of sand, the strength problem was improved, especially in the third and subsequent tests, no product breakage was found.

[0082] In the fourth experiment, by increasing the proportion of water, the fluidity of the concrete was significantly improved, resulting in a significant reduction in the number of gaps in the text. This shows that the proportion of water has an important influence on the fluidity of the concrete and the surface quality of the final product.

[0083] Finally, in Example 1, the experimenters found a relatively optimal ratio (392g cement, 158g sand, and 120g water). Under this ratio, the cultural and creative product has a smooth surface, clear text, and sufficient strength.

[0084] In terms of proportion, the ratio of cement, sand and water in Example 1 is 3.26:1.31:1. This ratio was gradually optimized in previous experiments and was adjusted by the experimenter based on multiple experimental results and observations.

[0085] Through this experiment, it can be seen that the material ratio is crucial to the quality and performance of concrete cultural and creative products. A reasonable ratio can significantly improve the surface smoothness, text clarity and strength of the product.

[0086] The experimenters adopted the method of gradually adjusting the material ratio, observing the experimental results and analyzing them. This method is scientific and helps to find the best ratio combination.

[0087] Comparative Example 2

[0088] The casting raw material ratio and casting process of the cultural and creative product are consistent with the relevant data of Example 1, but the only difference is that after the third mixing is completed, the casting is not carried out immediately, but it is chosen to stand for 1 minute before pouring. After standing for 1 minute, the concrete mixture is poured into the mold.

[0089] Similar to Example 1, natural curing (20° C., 72 h) and hot air curing (18° C., wind speed 3 m / s, 7 h) were performed.

[0090] Surface effect: The surface of the cultural and creative product no longer presents the gradient effect in Example 1, but becomes relatively uniform but lacks a sense of layering.

[0091] Material sedimentation: Since the concrete was not poured in the first place, the heavier materials (such as sand) in the concrete were precipitated, resulting in the overall structure of the cultural and creative product being less uniform than in Example 1.

[0092] Strength change: The strength of cultural and creative products has deteriorated significantly, which may be due to the uneven internal structure caused by material precipitation and the failure of effective discharge of possible bubbles.

[0093] in conclusion:

[0094] Through comparative experiments, we realize the importance of pouring at the "first time" in the production process of concrete cultural and creative products. It not only affects the surface effect and aesthetics of the product, but also directly affects the structure and strength of the product. Therefore, in actual operation, this step should be strictly followed to ensure the quality and performance of cultural and creative products.

[0095] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A process for producing concrete cultural and creative products, characterized in that: The preparation includes the following raw materials by mass: 100 parts water, 300-400 parts cement, 130-170 parts sand; Add the water, cement and sand into the mold according to the mass ratio, and perform the first stirring, the speed of the first stirring is 200-500r / min, and the stirring is performed for 3-5min; add a water reducer and a defoamer according to the mass of the cement in the mold, the mass ratio of the water reducer to the cement is 1:90-100, and the mass ratio of the defoamer to the cement is 1:100-150; After adding the water reducing agent and the defoaming agent, stirring is performed for the second time, the speed of the second stirring is 150-300 r / min, and the stirring time is 2-4 min; After the second stirring is completed, let it stand for 1 to 2 minutes, and then stir it for the third time. The third stirring speed is the same as the second stirring speed, and the third stirring time is 1 to 2 minutes. Pour the cultural and creative products as soon as possible after the third stirring is completed.

2. A process for producing a concrete cultural and creative product according to claim 1, characterized in that: After casting and forming, the cultural and creative products are naturally cured at a curing temperature of 20 to 25° C. and a curing time of 24 to 72 hours.

3. A process for producing a concrete cultural and creative product according to claim 2, characterized in that: After the natural curing is performed for 10 to 15 hours, hot air curing is added. The temperature of the hot air curing is 15 to 20° C., the wind speed is 2 to 5 m / s, and the time is 6 to 8 hours.

4. The process for producing a concrete cultural and creative product according to claim 1, characterized in that: When preparing the raw materials, pigments or decorative particles are prepared, and the mass ratio of the pigments or decorative particles to the cement is 1:50-80. The pigments or decorative particles are added before the first stirring and added into the mold together with the water, cement and sand.

5. The process for producing a concrete cultural and creative product according to claim 1, characterized in that: Before pouring, the mold is pretreated, including cleaning the inner surface of the mold, applying a release agent or laying a release paper.

6. The process for producing a concrete cultural and creative product according to claim 1, characterized in that: The water reducer is a sulfonate water reducer, a polyvinyl alcohol water reducer or a starch ether water reducer; the defoamer is a polyether defoamer or a polyether modified silicon defoamer.

Images