A fast-hardening filler wall material based on a sliding mode process and a wall preparation method

Abstract

The application discloses a kind of fast hard filling wall materials based on sliding mode process and wall preparation method, it is related to solid waste large-scale comprehensive utilization and building material technical field, fast hard filling wall includes the following components by weight parts: 1000~1200 parts of phosphorus building gypsum, 600~1000 parts of iron ore tailings, 400~700 parts of water, 10~30 parts of fiber, 10~30 parts of dispersing agent, 5~40 parts of synergist, 0.5~10 parts of retarder and 0.2~5 parts of defoaming agent;The product prepared by using phosphorus building gypsum, iron ore tailings and synergist and other materials, by designing and optimizing component allocation ratio, has high strength, light quality, good volume stability, has the rapid hardening capacity of fitting sliding mode process, has good thermal (heat preservation, heat insulation) performance, sound insulation performance, fireproof performance and other characteristics, realizes the comprehensive utilization of large solid waste while reducing the cost of filling wall material.

Description

Technical Field

[0001] This invention relates to the fields of large-scale comprehensive utilization of solid waste and building materials technology, and more specifically to the field of a fast-hardening infill wall material based on slipform process and a wall preparation method. Background Technology

[0002] Currently, the main materials used for infill walls in China are two types: brick blocks (shale bricks, aerated concrete blocks, etc.) and lightweight partition walls. The construction process for brick masonry primarily involves using mortar to bond the brick blocks, and enhancing the overall integrity through structural columns, wall ties, and ring beams. Lightweight partition walls, on the other hand, use fasteners such as U-shaped clips to fix the wall panels. Although these two construction techniques are mature and widely used, many problems remain. First, traditional brick masonry construction relies heavily on manual labor, while lightweight partition walls are relatively heavy, making both time-consuming, labor-intensive, and inefficient. Second, the costs are high and environmentally unfriendly. The costs of brickwork and brick materials have increased exponentially in recent years, and with increasingly stringent national requirements for environmental protection and energy conservation, prices continue to rise, making it difficult to control construction costs. Furthermore, significant waste occurs during construction, including mortar waste and brick material waste during cutting, making it neither green nor environmentally friendly. Third, pre-installing and embedding pipelines is inconvenient; for a long time, pipeline trenching has had a significant impact on the quality of infill walls and the environment.

[0003] In recent years, to reduce the overall technical difficulty and cost of construction, domestic and foreign experts have conducted extensive research. Studies have found that slipform construction technology has excellent application prospects in the construction market. This technology is motor-driven and features simple manufacturing, quick installation and dismantling, high mechanization, and strong applicability. It can significantly save on formwork, increase construction efficiency, and its adjustable mechanism can accommodate walls of different heights and widths. However, when using slipform technology for infill wall construction, the performance requirements of the casting materials are very high; otherwise, its high efficiency and low cost requirements cannot be met. Summary of the Invention

[0004] The purpose of this invention is to address the problems of low efficiency, high cost, significant pollution, and high material performance requirements of existing infill wall systems, as well as the slipform process itself. This invention provides a fast-setting infill wall material and its preparation method based on the slipform process. By using materials such as iron ore tailings, phosphate building gypsum, and synergists, and utilizing large quantities of solid waste, the overall material cost and carbon emissions can be effectively reduced. The product has the ability to harden rapidly in 10-20 minutes, ensuring excellent physical properties and volume stability while maintaining rapid hardening. It meets the requirements of partition wall materials for thermal (insulation and heat insulation) performance, sound insulation performance, and fire resistance performance, making it a new type of green and low-carbon building material.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0006] One aspect of the present invention provides a fast-setting infill wall material, comprising the following components by weight: 1000-1200 parts of phosphorus building gypsum, 600-1000 parts of iron ore tailings, 400-700 parts of water, 10-30 parts of fiber, 10-30 parts of dispersant, 5-40 parts of synergist, 0.5-10 parts of retarder, and 0.2-5 parts of defoamer.

[0007] Specifically, this case discloses a formulation for a fast-setting wall filling material. This formulation uses phosphate-bonded building gypsum as the main cementitious material to meet the requirements of rapid hardening and demolding, as well as volume stability, in slipforming processes. Simultaneously, its product has a low density, effectively reducing building load and solving the problems of high surface density and difficult construction inherent in existing wall materials. The low density of phosphate-bonded building gypsum is determined by its material composition: phosphate-bonded building gypsum is a hemihydrate gypsum, and its hydration and hardening product is dihydrate gypsum. Theoretically, it requires only 18.6% water, but in actual use, to ensure workability, the water content reaches over 50%. Excess water initially forms large air bubbles within the system during the initial mixing process, acting similarly to an admixture for air induction. After rapid hardening of the building gypsum, most of these air bubbles remain. At this point, the excess water begins to evaporate, creating numerous capillary pores within the gypsum, ultimately resulting in a low product density and low bulk density.

[0008] Furthermore, this formula uses solid waste iron ore tailings to replace part of the phosphate building gypsum. Through design and optimization of the component ratio, the composition of the wall material is more rationally distributed while ensuring the basic performance of the wall. On the one hand, it can further reduce the use of phosphate building gypsum to save material costs. Compared with conventional building materials such as cement and bricks, the use of modified phosphate gypsum products and iron ore tailings can significantly reduce carbon emissions during construction. On the other hand, the fineness modulus of iron ore tailings is small and the powder content is high, which significantly increases the adhesion of the system and the overall particle size and fluidity of the material. While ensuring the same fluidity, the water-cement ratio of the system can be reduced, solving the problem of grout leakage during slipform construction. In addition, the comprehensive utilization of iron ore tailings can effectively reduce the proportion of solid waste emissions during iron ore mining, prevent industrial land occupation caused by tailings accumulation, reduce the maintenance and construction costs of tailings dumps, and ultimately achieve the goal of tailings-free iron ore production.

[0009] In one embodiment, the phosphorus building gypsum is β-type hemihydrate gypsum obtained by calcining phosphogypsum at high temperature.

[0010] Specifically, a specific material of phosphorus building gypsum was disclosed. β-type hemihydrate gypsum, which is produced by high-temperature calcination of phosphorus gypsum, is a type of air-hardening, rapid-hardening building material.

[0011] In one embodiment, the phosphorus-based building gypsum has a water content of 61%, a 2-hour flexural strength of 2.5 MPa, a 2-hour compressive strength of 5.8 MPa, an oven-dry flexural strength of 3.0 MPa, and an oven-dry compressive strength of 13.5 MPa.

[0012] Specifically, the initial setting time of phosphorus building gypsum is 6 minutes and the final setting time is 8 minutes during the preparation process.

[0013] In one embodiment, iron ore tailings are waste residues generated during iron ore mining, with a fineness modulus of 1.4 and an apparent density of 3080 kg / m³. 3 The mud content is 9.3%.

[0014] In one embodiment, the fiber length is 10-30 mm, and the fiber is one or more of polypropylene fiber, polyethylene fiber, glass fiber, and wood fiber.

[0015] In one embodiment, the dispersant is one or more of polycarboxylate superplasticizers, melamine superplasticizers, calcium lignosulfonate, and naphthalene-based superplasticizers.

[0016] In one embodiment, the synergist is one or more of sodium sulfate, aluminum hydroxide, aluminum sulfate, urea, and sodium thiosulfate.

[0017] Specifically, this scheme discloses the selection of synergists, which can be one or more of the substances mentioned above. Besides the substances disclosed above, synergists can also be other synergists capable of achieving the designed effect. The specific dosage of the synergist is 1.0~2.5% of the mass of the phosphorus-based building gypsum. The synergist used in this scheme can effectively improve the problem of poor physical properties caused by the low bulk density of the phosphorus-based building gypsum itself. The hydration product of the phosphorus-based building gypsum is gypsum dihydrate (Ca(SO4)2·2H2O).

[0018] For example, after adding aluminum hydroxide synergist, the Al it provides 3+ It readily undergoes hydrolysis to form aluminum hydroxide gel. In the early stages of hydration of building gypsum, a small amount of gel will fill the crystalline network formed by dihydrate gypsum, increasing the system's cohesion and making the network more compact. Simultaneously, Al... 3+ With SO4 present in the system 2- Ca 2+ Water combines to form ettringite. A small amount of ettringite fills the gaps formed in the internal structural network of gypsum during the hydration process, enhancing the physical properties of the final hardened body.

[0019] When urea is added as an synergist, the c-axis of calcium sulfate dihydrate crystals has special activity among the a, b, and c axes. During the crystallization process, the c-axis will grow rapidly into a slender rod or needle shape. Adding urea will reduce the unevenness of the growth rate of crystals in various directions, which will eventually reduce the aspect ratio of calcium sulfate dihydrate crystals, increase the strength of individual crystals, increase the number of crystallization contact points, and ultimately improve the overall strength of the system.

[0020] In one embodiment, the retarder is one or more of sodium hexametaphosphate, sodium polyphosphate, borax, potassium citrate, sodium carbonate, animal protein retarder, and plant protein retarder.

[0021] In one embodiment, the defoamer is an organosilicone defoamer.

[0022] Another aspect of the present invention provides a method for preparing a fast-setting infill wall material based on a slipform process, using the aforementioned fast-setting infill wall material based on a slipform process, comprising the following steps:

[0023] S1: Prepare materials according to the formula ratio: weigh 1000~1200 parts of phosphorus building gypsum, 600~1000 parts of iron ore tailings, 400~700 parts of water, 10~30 parts of fiber, 10~30 parts of dispersant, 5~40 parts of synergist, 0.5~10 parts of retarder and 0.2~5 parts of defoamer;

[0024] S2. Preliminary mixing: Now add the water, dispersant, retarder, synergist and defoamer prepared in step S1 to the mixer in sequence, and stir and dissolve the above materials in the mixer to obtain a preliminary mixture.

[0025] S3. Remixing and Casting: With the mixer running, add the phosphorus building gypsum prepared in step S1 to the preliminary mixture in step S2 and mix for 0.5 to 2 minutes. Then add the fiber and iron ore tailings prepared in step S1 in sequence and continue mixing for 1 to 3 minutes to make the materials evenly mixed and obtain the mixture. Cast the mixture into shape to obtain the wall.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. This invention, through the use of materials such as phosphogypsum, iron ore tailings, and synergists, and by designing and optimizing the composition ratio, produces a product with high strength, light weight, good volume stability, rapid hardening capability suitable for slipforming process, and good thermal (insulation and heat insulation) performance, sound insulation performance, and fire resistance performance. While reducing the cost of infill wall materials, it realizes the comprehensive utilization of bulk solid waste, reduces the environmental pollution caused by the stockpiling of phosphogypsum and iron ore tailings, and solves the shortcomings of existing technologies.

[0028] 2. By using iron ore tailings with low fineness modulus and through reasonable proportioning design, this invention can further reduce the use of phosphorus building gypsum, thereby reducing the cost of use. At the same time, it can significantly increase the adhesion of the system and the overall particle size of the material, thus solving the problem of grout leakage during slipform construction.

[0029] 3. The fast-setting infill wall material prepared by this invention, when used in conjunction with the slipform process, can reduce the carbon emissions per square meter by about one-third or more compared with conventional infill wall construction technology. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0031] Example 1

[0032] This embodiment provides a fast-setting infill wall material based on slipform process, the formulation of which includes the following components in parts by weight: 1200 parts of phosphorus building gypsum, 600 parts of iron ore tailings, 624 parts of water, 10 parts of fiber, 12 parts of dispersant, 18 parts of synergist, 1.2 parts of retarder, and 3.6 parts of defoamer.

[0033] The fiber is a polypropylene fiber with a length of 15 mm; the dispersant is a polycarboxylate superplasticizer; the synergist is composed of sodium sulfate and aluminum hydroxide in a mass ratio of 1:1; the retarder is an animal protein retarder; and the defoamer is a silicone defoamer.

[0034] The preparation method of a novel fast-hardening infill wall material based on slipform process includes the following steps:

[0035] S1: Prepare materials according to the above formula ratio: weigh 1200 parts of phosphorus building gypsum, 600 parts of iron ore tailings, 624 parts of water, 10 parts of fiber, 12 parts of dispersant, 18 parts of synergist, 1.2 parts of retarder, and 3.6 parts of defoamer;

[0036] S2. Preliminary mixing: Now add the water, dispersant, retarder, synergist and defoamer prepared in step S1 to the mixer in sequence, and stir and dissolve the above materials in the mixer to obtain a preliminary mixture.

[0037] S3. Remixing and Casting: With the mixer running, add the phosphorus building gypsum prepared in step S1 to the preliminary mixture in step S2 and mix for 0.5 minutes. Then add the fiber and iron ore tailings prepared in step S1 in sequence and continue mixing for 1 minute to make the materials evenly mixed. Cast the mixture into shape to obtain the wall material.

[0038] Example 2

[0039] A fast-setting infill wall material based on slipforming process, comprising the following components in parts by weight: 1100 parts of phosphorus building gypsum, 800 parts of iron ore tailings, 572 parts of water, 13 parts of fiber, 20 parts of dispersant, 25 parts of synergist, 2.2 parts of retarder, and 2.2 parts of defoamer.

[0040] The fiber is polyethylene fiber with a length of 20 mm; the dispersant is a naphthalene-based water-reducing agent; the synergist is aluminum sulfate; the retarder is sodium polyphosphate; and the defoamer is a silicone defoamer.

[0041] The preparation method of fast-hardening infill wall material based on slipform process includes the following steps:

[0042] S1: Prepare materials according to the above formula ratio: weigh 1100 parts of phosphorus building gypsum, 800 parts of iron ore tailings, 572 parts of water, 13 parts of fiber, 20 parts of dispersant, 25 parts of synergist, 2.2 parts of retarder, and 2.2 parts of defoamer;

[0043] S2. Preliminary mixing: Now add the water, dispersant, retarder, synergist and defoamer prepared in step S1 to the mixer in sequence, and stir and dissolve the above materials in the mixer to obtain a preliminary mixture.

[0044] S3. Remixing and Casting: With the mixer running, add the phosphorus building gypsum prepared in step S1 to the preliminary mixture in step S2 and mix for 0.5 minutes. Then add the fiber and iron ore tailings prepared in step S1 in sequence and continue mixing for 1 minute to make the materials evenly mixed. Cast the mixture into shape to obtain the wall material.

[0045] Example 3

[0046] A fast-setting infill wall material based on slipform process, comprising the following components in parts by weight: 1000 parts of phosphorus building gypsum, 1000 parts of iron ore tailings, 520 parts of water, 10 parts of fiber, 10 parts of dispersant, 24 parts of synergist, 4 parts of retarder, and 3 parts of defoamer.

[0047] In the above components, the fiber is polyethylene fiber with a length of 20 mm; the dispersant is a naphthalene-based water-reducing agent; the synergist is aluminum sulfate; the retarder is sodium polyphosphate; and the defoamer is a silicone defoamer.

[0048] In the above components, the fiber is polypropylene fiber with a length of 25 mm; the dispersant is a melamine-based water-reducing agent; the synergist is urea; and the retarder is a plant protein retarder.

[0049] The preparation method of fast-hardening infill wall material based on slipform process includes the following steps:

[0050] S1: Prepare materials according to the above formula ratio: weigh 1000 parts of phosphorus building gypsum, 1000 parts of iron ore tailings, 520 parts of water, 10 parts of fiber, 10 parts of dispersant, 24 parts of synergist, 4 parts of retarder, and 3 parts of defoamer.

[0051] S2. Preliminary mixing: Now add the water, dispersant, retarder, synergist and defoamer prepared in step S1 to the mixer in sequence, and stir and dissolve the above materials in the mixer to obtain a preliminary mixture.

[0052] S3. Remixing and Casting: With the mixer running, add the phosphorus building gypsum prepared in step S1 to the preliminary mixture in step S2 and mix for 0.5 minutes. Then add the fiber and iron ore tailings prepared in step S1 in sequence and continue mixing for 1 minute to make the materials evenly mixed. Cast the mixture into shape to obtain the wall material.

[0053] Example 4

[0054] A fast-setting infill wall material based on slipforming process, comprising the following components in parts by weight: 1000 parts of phosphorus building gypsum, 600 parts of iron ore tailings, 400 parts of water, 10 parts of fiber, 10 parts of dispersant, 5 parts of synergist, 0.5 parts of retarder, and 0.2 parts of defoamer.

[0055] The selection of materials and the preparation method are the same as in Example 1.

[0056] Example 5

[0057] A fast-setting infill wall material based on slipforming process, comprising the following components in parts by weight: 1200 parts of phosphorus building gypsum, 1000 parts of iron ore tailings, 700 parts of water, 30 parts of fiber, 30 parts of dispersant, 40 parts of synergist, 10 parts of retarder, and 5 parts of defoamer.

[0058] The selection of materials and the preparation method are the same as in Example 2.

[0059] Example 6

[0060] A fast-setting infill wall material based on slipforming process, comprising the following components in parts by weight: 1100 parts of phosphorus building gypsum, 800 parts of iron ore tailings, 600 parts of water, 20 parts of fiber, 20 parts of dispersant, 20 parts of synergist, 6 parts of retarder, and 2.5 parts of defoamer.

[0061] The selection of materials and the preparation method are the same as in Example 3.

[0062] Comparative Example 1

[0063] A conventional method for preparing gypsum-filled walls comprises the following components in parts by weight: 1500 parts phosphorus-based building gypsum, 780 parts water, 15 parts fiber, 15 parts dispersant, 1.5 parts retarder, and 4.5 parts defoamer. The fiber is polypropylene fiber with a length of 15 mm; the dispersant is a polycarboxylate superplasticizer; and the defoamer is an organic defoamer.

[0064] The method for preparing the infill wall material includes the following steps:

[0065] S1: Weigh each component according to the formula, and add water, dispersant, retarder and defoamer in sequence to the mixer and stir to dissolve and mix.

[0066] S2: With the mixer running, add phosphorus building gypsum to the above mixed solution and stir for 0.5 minutes. Then add fiber and continue stirring for 1 minute until the material is uniform. Then pour it into shape to obtain the final product.

[0067] Comparative Example 2

[0068] A wall infill material comprising the following components in parts by weight: 1200 parts of phosphorus building gypsum, 600 parts of iron ore tailings, 624 parts of water, 10 parts of fiber, 12 parts of dispersant, 1.2 parts of retarder, and 3.6 parts of defoamer.

[0069] Of the above components, the fiber is polypropylene fiber with a length of 15 mm; the dispersant is polycarboxylate superplasticizer; the synergist is composed of sodium sulfate and aluminum hydroxide in a mass ratio of 1:1; the retarder is an animal protein retarder; and the defoamer is an organic defoamer.

[0070] The method for preparing the infill wall material includes the following steps:

[0071] S1: Weigh each component according to the formula, and add water, dispersant, retarder and defoamer in sequence to the mixer and stir to dissolve and mix.

[0072] S2: With the mixer running, add phosphorus building gypsum to the above mixed solution and stir for 0.5 minutes. Then add fiber and iron ore tailings in sequence, and continue stirring for 1 minute until the material is uniform. Then pour it into shape to obtain the final product.

[0073] Comparative Example 3

[0074] A wall infill material, comprising the following components in parts by weight: 1500 parts phosphate building gypsum, 780 parts water, 15 parts fiber, 15 parts dispersant, 18 parts synergist, 1.2 parts retarder, and 3.6 parts defoamer. The fiber is polypropylene fiber with a length of 15 mm; the dispersant is a polycarboxylate superplasticizer; and the defoamer is an organic defoamer.

[0075] The method for preparing the infill wall material includes the following steps:

[0076] S1: Weigh each component according to the formula, and add water, dispersant, retarder, synergist and defoamer in sequence to the mixer and stir to dissolve and mix.

[0077] S2: With the mixer running, add phosphorus building gypsum to the above mixed solution and stir for half a minute. Then add fiber and continue stirring for one minute until the material is uniform. Then pour it into shape to obtain the final product.

[0078] The formulation data of the wall materials described in Examples 1-6 and Comparative Examples 1-3 are as follows, and the specific formulation data results are shown in Table 1.

[0079]

[0080] The wall materials described in Examples 1-6 and Comparative Examples 1-3 were prepared and tested according to standard T / CECS 971-2021. Several pieces of airborne sound insulation were made according to the dimensions of 4000*2500*100mm. The specific test data results are shown in Table 2.

[0081]

[0082] Based on the above proportions and Table 2, the following conclusions can be drawn:

[0083] I. A comparison between Example 1 and Comparative Example 2 shows that:

[0084] (1) In terms of the composition, Comparative Example 2 is the same as Example 1 except that no synergist was added; the other composition ratios and preparation methods are the same.

[0085] (2) As can be seen from the data in Table 2, the addition of the synergist has a good effect on improving the defects such as low strength and poor water soaking performance caused by the inherent performance defects of phosphorus building gypsum.

[0086] II. A comparison between Example 1 and Comparative Example 3 shows that:

[0087] (1) In terms of composition, Comparative Example 3 is the only one without iron ore tailings compared with Example 1, while the other composition ratios and preparation methods are the same.

[0088] (2) As can be seen from the data in Table 2, the addition of iron ore tailings can increase the fluidity and cohesiveness of the system, improve the construction performance, and reduce the risk of grout leakage. At the same time, due to the small fineness modulus of iron ore tailings, the addition of tailings makes the system material more compact, the softening coefficient higher, and the heat transfer coefficient slightly reduced, but all within the standard range.

[0089] III. By comparing Examples 1-6 with Comparative Example 1, we can conclude that:

[0090] (1) From the composition ratio, Comparative Example 1 is a conventional gypsum wallboard preparation method. The difference between Comparative Example 1 and Example 1 is that iron ore tailings and synergists were not added, the amount of single-phosphorus building gypsum was increased, and the water-cement ratio, admixture dosage and preparation method were the same, indicating that Comparative Example 1 has a higher cost.

[0091] (2) As can be seen from the experimental data of Examples 1 to 6 in Table 2, after adding iron ore tailings and synergists, the 2-hour strength of the new quick-hardening infill wall is significantly higher than that of conventional gypsum wall panels, and the initial fluidity is greater. This indicates that the new quick-hardening infill wall has better workability under the same conditions, better quick-hardening and demolding performance, and is more suitable for slip molding process. After drying and hardening, it also has better strength performance, and the sound insulation and heat insulation performance also meet the standards.

[0092] (3) The product of this invention is a fast-setting wall material with high economic efficiency and excellent physical properties. It can effectively solve the problems of long climbing time, rough surface, and easy grout leakage in the current slipform process, and greatly improve the construction efficiency of the slipform process. Compared with the existing infill wall preparation and construction technology, the carbon emission per square meter can be reduced by about one-third or more. While reducing the cost of infill wall materials, it realizes the comprehensive utilization of bulk solid waste and reduces the pollution problems caused by the stockpiling of phosphogypsum and iron ore tailings. It is a new type of green, low-carbon and environmentally friendly building material suitable for promotion.

Claims

1. A fast-setting infill wall material based on slipform molding process, characterized in that, The product comprises the following components by weight: 1000-1200 parts of phosphorus-based building gypsum, 600-1000 parts of iron ore tailings, 400-700 parts of water, 10-30 parts of fiber, 10-30 parts of dispersant, 5-40 parts of synergist, 0.5-10 parts of retarder, and 0.2-5 parts of defoamer; The phosphorus building gypsum is β-type hemihydrate gypsum obtained by high-temperature calcination of phosphogypsum. The iron ore tailings are waste residues generated during iron ore mining, with a fineness modulus of 1.4 and an apparent density of 3080 kg / m³. 3 The mud content is 9.3%. The synergist is one or more of sodium sulfate, aluminum hydroxide, aluminum sulfate, urea, and sodium thiosulfate.

2. The rapid-hardening infill wall material based on slipform process according to claim 1, characterized in that, The phosphorus-containing building gypsum has a water content of 61%, a 2-hour flexural strength of 2.5 MPa, a 2-hour compressive strength of 5.8 MPa, an oven-dry flexural strength of 3.0 MPa, and an oven-dry compressive strength of 13.5 MPa.

3. The rapid-hardening infill wall material based on slipform process according to claim 1, characterized in that, The fiber has a length of 10-30 mm and is one or more of polypropylene fiber, polyethylene fiber, glass fiber, and wood fiber.

4. A fast-setting infill wall material based on slipform process according to claim 1, characterized in that, The dispersant is one or more of polycarboxylate superplasticizers, melamine superplasticizers, calcium lignosulfonate, and naphthalene-based superplasticizers.

5. A fast-setting infill wall material based on slipform process according to claim 1, characterized in that, The retarder is one or more of the following: sodium hexametaphosphate, sodium polyphosphate, borax, potassium citrate, sodium carbonate, animal protein retarder, and plant protein retarder.

6. A fast-setting infill wall material based on slipform process according to claim 1, characterized in that, The defoamer is an organosilicone defoamer.

7. A method for preparing a fast-setting infill wall material based on slipform process, comprising using the fast-setting infill wall material based on slipform process as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1: Prepare materials according to the formula ratio: weigh 1000~1200 parts of phosphorus building gypsum, 600~1000 parts of iron ore tailings, 400~700 parts of water, 10~30 parts of fiber, 10~30 parts of dispersant, 5~40 parts of synergist, 0.5~10 parts of retarder and 0.2~5 parts of defoamer; S2. Preliminary mixing: Now add the water, dispersant, retarder, synergist and defoamer prepared in step S1 to the mixer in sequence, stir to dissolve and mix, and obtain a preliminary mixture; S3. Remixing and Casting: With the mixer running, add the phosphorus building gypsum prepared in step S1 to the preliminary mixture in step S2 and stir for 0.5 to 2 minutes. Then, add the fiber and iron ore tailings prepared in step S1 in sequence and continue stirring for 1 to 3 minutes to make the materials evenly mixed and obtain the mixture. Cast the mixture into shape to obtain the wall material.

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