A formwork for making high crack resistance self-leveling concrete mortar components

Abstract

The application relates to the technical field of mortar, in particular to a formwork for manufacturing high-anti-crack self-leveling concrete mortar components, which comprises two symmetrically-arranged building formworks, and a plurality of thread sleeves are arranged on the two sides of the building formworks and arranged in pairs in parallel, two symmetrically-arranged thread rods are threadedly connected in the interiors of each thread sleeve, and a clamping plate I is threadedly connected on each thread rod. The application realizes the close adhesion of two clamping plates II and the building formwork, obviously strengthens the stability of the building formwork in the pouring process, ensures the safety of the pouring operation, and realizes the close clamping and accurate positioning of the edges of the building formwork by adjusting the distance between the two clamping plates I. The double clamping and positioning mechanism effectively prevents the displacement or deformation of the formwork in the pouring process, lays a solid foundation for finally constructing a high-quality and high-precision building structure.

Description

Technical Field

[0001] This invention relates to the field of mortar technology, specifically a template for making high crack-resistant self-leveling concrete mortar components. Background Technology

[0002] Commonly used mortars include cement mortar, mixed mortar (or cement-lime mortar), lime mortar, and clay mortar. These are made by mixing inorganic cementing materials with fine aggregates and water in a specific ratio. Also known as plaster, they are used in masonry and plastering projects. They can be divided into masonry mortar and plastering mortar. The former is used for the construction of bricks, stones, blocks, etc., and for component installation; the latter is used for plastering the surfaces of walls, floors, roofs, and beams and columns to achieve protective and decorative requirements. Some common mortar materials are made by mixing gypsum, lime paste, or clay with fibrous reinforcing materials and water to form a paste-like substance, called ash, paste, mud, or putty. Commonly used types include hemp fiber ash (lime paste mixed with hemp fibers), paper fiber ash (lime paste mixed with paper fibers), gypsum ash (lime paste mixed with calcined gypsum and paper fibers or glass fibers), and mortar mixed with lime (clay mixed with a small amount of lime and wheat straw or rice straw).

[0003] Mortar is a binding material used in bricklaying in construction. It is made by adding water to sand and cementitious materials (cement, lime paste, clay, etc.) in a certain proportion. However, mortar prepared by existing technology has fluctuating performance, such as unstable strength, impermeability, and durability, which affects the quality of the project. If water-reducing agents and stabilizers are not added or are added inappropriately, the fluidity and adhesion of the mortar will be affected, thereby reducing its strength and durability. Furthermore, the lack of effective temperature and humidity control measures may lead to problems such as cracking and excessively rapid drying during the curing process, affecting its final performance. Finally, the curing time also needs to be strictly controlled. Too short or too long a curing time will affect the strength development and stability of the mortar. Therefore, there is an urgent need for a template for making high crack-resistant self-leveling concrete mortar components to solve the above problems. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention proposes a template for manufacturing high crack-resistant self-leveling concrete mortar components.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] A template for making high crack-resistant self-leveling concrete mortar components includes two symmetrically arranged building templates, and multiple threaded sleeves arranged in parallel pairs are provided on both sides of the building templates. Each threaded sleeve is threaded with two symmetrically arranged threaded rods. Each threaded rod is threaded with a clamping plate, and each threaded rod has an operating block at its end for driving the threaded rod to rotate.

[0007] The pre-clamping mechanism, located on the threaded sleeve, is used to pre-clamp two building templates.

[0008] As a further preferred embodiment of this technical solution: the pre-clamping mechanism includes a connecting block fixedly installed on the threaded sleeve, each connecting block having a sleeve fixedly installed on it, each sleeve having two connecting rods slidably connected inside, and a spring being provided between the two connecting rods, with a clamping plate two being provided at the end of each connecting rod away from the spring.

[0009] As a further preferred embodiment of this technical solution: each of the clamping plates is equipped with a card block, and the outer wall of the building template is provided with a card slot for matching use.

[0010] As a further preferred embodiment of this technical solution, the mortar component comprises the following components:

[0011] The composition of the cement is as follows: high-strength silicate cement 30%-40%, sulfoaluminate cement 15%-30%, high-belite sulfoaluminate cement 10%-20%, aggregate 20%-30%, fly ash 8%-15%, polycarboxylate superplasticizer 0.5%-1%, redispersible polymer powder 0.2%-0.5%, stabilizer 0.3%-0.8%, expansion agent 1%-5%, graphene oxide 0.01%-0.1%, modified polymer emulsion 1%-5%, and cellulose ether derivative 0.1%-0.5%.

[0012] As a further preferred embodiment of this technical solution, the specific steps include:

[0013] S1. High-strength silicate cement, sulfoaluminate cement, high belite sulfoaluminate cement, aggregates and fly ash are premixed using a mixer;

[0014] S2. Add polycarboxylate superplasticizer, redispersible polymer powder, stabilizer, swelling agent, graphene oxide, modified polymer emulsion and cellulose ether derivative to the premix and stir.

[0015] S3. Pour the mixed mortar into a maturation container and let it stand, then spray it with water to humidify it.

[0016] As a further preferred embodiment of this technical solution: the stirring time in step S1 is set to 5-10 minutes, and the rotation speed is controlled at 500-1000 rpm.

[0017] As a further preferred embodiment of this technical solution: the stirring time in step S2 is set to 5-10 minutes, and the rotation speed is controlled at 600-1200 rpm.

[0018] As a further preferred embodiment of this technical solution: the static conditions described in step S3 are as follows: if the greenhouse temperature is 15℃-30℃, the static time is 24 hours; if the temperature exceeds 30℃, the static time is shortened to 16 hours; if the temperature is lower than 15℃, the static time is extended to 36 hours, and the spray humidity is maintained in the range of 45%-70%.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. In this invention, by adding a variety of additives, the anti-sagging, thixotropic, and anti-settling properties of the mortar are significantly improved, making construction easier and reducing overall costs. These components can significantly improve the fluidity and adhesion of the mortar, while also increasing its strength and durability. Furthermore, by controlling the curing time and environmental conditions, such as temperature and humidity, the mortar is ensured to cure in a suitable environment, which helps to improve the final properties of the mortar, including compressive strength and flexural strength, thus guaranteeing the quality of the mortar.

[0021] 2. In this invention, the tight fit between the two clamping plates and the building template enhances the stability of the building template during the pouring process, ensuring the safety of the pouring operation. Furthermore, by adjusting the distance between the two clamping plates, the edge of the building template is tightly clamped and precisely positioned. This dual clamping and positioning mechanism effectively prevents the template from shifting or deforming during the pouring process, laying a solid foundation for the final construction of a high-quality, high-precision building structure. Attached Figure Description

[0022] Figure 1 A three-dimensional structural diagram of a high crack-resistant self-leveling concrete mortar component;

[0023] Figure 2 for Figure 1 A three-dimensional schematic diagram of the partial structural disassembly state;

[0024] Figure 3 This is a flowchart illustrating the preparation process of the present invention.

[0025] Legend: 1. Building formwork; 2. Slot; 3. Block; 4. Clamping plate one; 5. Threaded sleeve; 6. Threaded rod; 7. Operating block; 8. Connecting block; 9. Sleeve; 10. Spring; 11. Linkage rod; 12. Clamping plate two. Detailed Implementation

[0026] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figures 1-3 This application provides a template for manufacturing high crack-resistant self-leveling concrete mortar components, including two symmetrically arranged building templates 1, and multiple threaded sleeves 5 arranged in parallel pairs are provided on both sides of the building templates 1. Each threaded sleeve 5 is internally threaded with two symmetrically arranged threaded rods 6, each threaded rod 6 is threaded with a clamping plate 4, and each threaded rod 6 has an operating block 7 at its end for driving the threaded rod 6 to rotate.

[0028] When the clamping plate 2 12 is driven to fit tightly against the building template 1, each clamping plate 2 12 is equipped with a card block 3, and the outer wall of the building template 1 is provided with a card slot 2 for matching use. The clamping plate 4 also moves accordingly, causing the card block 3 on it to be inserted into the card slot 2.

[0029] Specifically, by rotating the operating block 7, the operating block 7 drives the threaded rod 6 to rotate in the inner cavity of the threaded sleeve 5. As the threaded rod 6 rotates and advances, the clamping plate 4 is gradually guided and firmly attached to the building template 1, thereby realizing the positioning and stable clamping of the clamping plate 4, which is beneficial to improving the stability of the building template during pouring. The pre-clamping mechanism is set on the threaded sleeve 5 and is used to pre-clamp the two building templates 1.

[0030] The pre-clamping mechanism includes connecting blocks 8 fixedly mounted on threaded sleeves 5. Each connecting block 8 has a sleeve 9 fixedly mounted on it. Two connecting rods 11 are slidably connected inside each sleeve 9, and a spring 10 is provided between the two connecting rods 11. A clamping plate 2 12 is provided at the end of each connecting rod 11 away from the spring 10. Specifically, in the preparation stage before cement pouring, the sleeves 9 are first placed on the side of the building formwork 1. Using the elastic potential energy stored in the spring 10, the clamping plate 2 12 is driven to fit tightly against the building formwork 1.

[0031] Example 1:

[0032] A high crack-resistant self-leveling concrete mortar component, the mortar composition of which consists of high-strength silicate cement, sulfoaluminate cement, aggregate, fly ash, polycarboxylate superplasticizer (specifically model ViscoCrete-530P), redispersible polymer powder (specifically model HW5111), stabilizer (specifically model DOWFAX8390), expansion agent (specifically model S-AC type high-performance concrete expansion agent), graphene oxide, modified polymer emulsion (specifically model BLJ-963M / F), and cellulose ether derivative (specifically model KY10), and all the following examples and comparative examples adopt this standard.

[0033] It should be noted that quartz sand is selected as the coarse aggregate and calcium carbonate powder as the fine aggregate, with the proportion of fine aggregate sand being greater than that of quartz sand.

[0034] A method for preparing high crack-resistant self-leveling concrete mortar components, the method comprising the following steps:

[0035] S1. Premix 35% high-strength silicate cement, 20% sulfoaluminate cement, 15% high-belite sulfoaluminate cement, and 25% aggregate, including 15% fine aggregate sand, 10% quartz sand, and 10% fly ash, using a mixer. Set the mixing time to 7 minutes and the speed to 750 rpm to ensure that all materials are fully and evenly mixed without clumping.

[0036] S2. Add 0.75% polycarboxylate superplasticizer, 0.35% redispersible polymer powder, 0.55% stabilizer, 3% expansion agent, 0.05% graphene oxide, 3% modified polymer emulsion, and 0.3% cellulose ether derivative to the premixed material and stir. Set the stirring time to 7 minutes and the speed to 900 rpm to ensure that all materials are fully mixed and uniform without clumping.

[0037] It should be noted that in step S2, microwave-assisted stirring is used to accelerate the simultaneous heating of the material's interior and surface, thereby speeding up the cement hydration reaction.

[0038] S3. Pour the mixed mortar into a dedicated curing container and let it stand in a greenhouse at 25°C for 24 hours. It should be noted that in step S3, the humidity inside the curing container is maintained at 50% using a spray system.

[0039] Example 2:

[0040] Based on Example 1, a high-crack-resistant self-leveling concrete mortar component is provided. The mortar composition comprises high-strength silicate cement, sulfoaluminate cement, aggregates, fly ash, polycarboxylate superplasticizer, redispersible polymer powder, stabilizer, expanding agent, graphene oxide, modified polymer emulsion, and cellulose ether derivatives. It should be noted that quartz sand is selected as the coarse aggregate, and calcium carbonate powder is selected as the fine aggregate, with the proportion of fine aggregate sand being greater than that of quartz sand.

[0041] A method for preparing high crack-resistant self-leveling concrete mortar components, the method comprising the following steps:

[0042] S1. Premix 10% high-strength silicate cement, 25% sulfoaluminate cement, 10% high-belite sulfoaluminate cement, and 20% aggregate, including 12% fine aggregate sand, 8% quartz sand, and 12% fly ash, using a mixer. Set the mixing time to 8 minutes and the speed to 800 rpm to ensure that all materials are fully and evenly mixed without clumping.

[0043] S2. Add 0.6% polycarboxylate superplasticizer, 0.4% redispersible polymer powder, 0.6% stabilizer, 2% expansion agent, 0.03% graphene oxide, 4% modified polymer emulsion, and 0.25% cellulose ether derivative to the premixed material and stir. Set the stirring time to 8 minutes and the speed to 1000 rpm to ensure that all materials are fully mixed and uniform without clumping.

[0044] It should be noted that in step S2, microwave-assisted stirring is used to accelerate the simultaneous heating of the material's interior and surface, thereby speeding up the cement hydration reaction.

[0045] S3. Pour the mixed mortar into a dedicated curing container and let it stand for 24 hours at a greenhouse humidity of 22°C. It should be noted that in step S3, the humidity inside the curing container is maintained at 55% using a spray system.

[0046] Example 3:

[0047] Based on Example 2, a high-crack-resistant self-leveling concrete mortar component is provided. The mortar composition consists of high-strength silicate cement, sulfoaluminate cement, aggregates, fly ash, polycarboxylate superplasticizer, redispersible polymer powder, stabilizer, expanding agent, graphene oxide, modified polymer emulsion, and cellulose ether derivatives. It should be noted that quartz sand is selected as the coarse aggregate, and calcium carbonate powder is selected as the fine aggregate, with the proportion of fine aggregate sand being greater than that of quartz sand.

[0048] A method for preparing high crack-resistant self-leveling concrete mortar components, the method comprising the following steps:

[0049] S1. Premix 30% high-strength silicate cement, 15% sulfoaluminate cement, 20% high-belite sulfoaluminate cement, and 30% aggregate, of which 18% is fine aggregate sand, 12% is quartz sand, and 15% is fly ash, using a mixer. Set the mixing time to 6 minutes and the speed to 900 rpm to ensure that all materials are fully and evenly mixed without clumping.

[0050] S2. Add 0.8% polycarboxylate superplasticizer, 0.3% redispersible polymer powder, 0.4% stabilizer, 4% expansion agent, 0.07% graphene oxide, 2% modified polymer emulsion, and 0.36% cellulose ether derivative to the premixed material and stir. Set the stirring time to 6 minutes and control the speed at 1100 rpm to ensure that all materials are fully mixed and uniform without clumping.

[0051] It should be noted that in step S2, microwave-assisted stirring is used to accelerate the simultaneous heating of the material's interior and surface, thereby speeding up the cement hydration reaction.

[0052] S3. Pour the mixed mortar into a dedicated curing container and let it stand in a greenhouse at 28°C for 24 hours. It should be noted that in step S3, the humidity inside the curing container is maintained at 45% using a spray system.

[0053] Comparative Example 1:

[0054] Based on all the above embodiments, a high crack-resistant self-leveling concrete mortar component is provided. The mortar composition is composed of high-strength silicate cement, sulfoaluminate cement, aggregate, fly ash, polycarboxylate superplasticizer, redispersible polymer powder, stabilizer, expansion agent, graphene oxide, modified polymer emulsion, and cellulose ether derivative.

[0055] It should be noted that quartz sand is selected as the coarse aggregate and calcium carbonate powder as the fine aggregate, with the proportion of fine aggregate sand being greater than that of quartz sand.

[0056] A method for preparing high crack-resistant self-leveling concrete mortar components, the method comprising the following steps:

[0057] S1. Premix 40% high-strength silicate cement, 25% sulfoaluminate cement, 10% high-belite sulfoaluminate cement, and 20% aggregate, including 12% fine aggregate sand, 8% quartz sand, and 12% fly ash, using a mixer. Set the mixing time to 8 minutes and the speed to 800 rpm to ensure that all materials are fully and evenly mixed without clumping.

[0058] S2. Add 0.6% polycarboxylate superplasticizer, 0.4% redispersible polymer powder, 0.6% stabilizer, and 2% expansion agent to the premixed material. Set the stirring time to 8 minutes and the speed to 1000 pm to ensure that all materials are fully mixed and uniform without clumping.

[0059] It should be noted that in step S2, microwave-assisted stirring is used to accelerate the simultaneous heating of the material's interior and surface, thereby speeding up the cement hydration reaction.

[0060] S3. Pour the mixed mortar into a dedicated curing container and let it stand in a greenhouse at 22°C for 24 hours. It should be noted that in step S3, the humidity inside the curing container is maintained at 5% using a spray system.

[0061] Comparative Example 2:

[0062] Based on all the above embodiments and Comparative Example 1, a high crack-resistant self-leveling concrete mortar component is provided. The mortar composition consists of high-strength silicate cement, sulfoaluminate cement, aggregate, fly ash, polycarboxylate superplasticizer, redispersible polymer powder, stabilizer, expanding agent, graphene oxide, modified polymer emulsion, and cellulose ether derivative.

[0063] It should be noted that quartz sand is selected as the coarse aggregate and calcium carbonate powder as the fine aggregate, with the proportion of fine aggregate sand being greater than that of quartz sand.

[0064] A method for preparing high crack-resistant self-leveling concrete mortar components, the method comprising the following steps:

[0065] S1. Premix 35% high-strength silicate cement, 20% sulfoaluminate cement, 15% high-belite sulfoaluminate cement, and 25% aggregate, including 15% fine aggregate sand, 10% quartz sand, and 10% fly ash, using a mixer. Set the mixing time to 7 minutes and the speed to 750 rpm to ensure that all materials are fully and evenly mixed without clumping.

[0066] S2. Add 0.5% polycarboxylate superplasticizer to the premixed materials, set the stirring time to 7 minutes, and control the speed at 900 rpm to ensure that all materials are fully mixed and uniform without clumping.

[0067] It should be noted that in step S2, microwave-assisted stirring is used to accelerate the simultaneous heating of the material's interior and surface, thereby speeding up the cement hydration reaction.

[0068] S3. Pour the mixed mortar into a dedicated curing container and let it stand in a greenhouse at 25°C for 24 hours. It should be noted that in step S3, the humidity inside the curing container is maintained at 50% using a spray system.

[0069] In summary, based on all the above embodiments and comparative examples, the material proportion diagram is shown in Table 1 and the experimental data diagram is shown in Table 2:

[0070] Table 1:

[0071]

[0072] Table 2:

[0073]

[0074] From Table 1 and Table 2, we can see that:

[0075] In Examples 1, 2, and 3, as the proportion of high-strength silicate cement and sulfoaluminate cement increases, the compressive strength and flexural strength improve, but the linear expansion rate decreases slightly. This is because the hydration reaction of high-strength silicate cement and sulfoaluminate cement is more complete, forming more hydration products and improving the strength.

[0076] In Comparative Examples 1 and 2, the addition of polycarboxylate superplasticizer, redispersible polymer powder, stabilizer, expansion agent, graphene oxide, and modified polymer emulsion significantly improved the performance of the mortar. The superplasticizer and redispersible polymer powder improved the fluidity and adhesion of the mortar, the stabilizer and expansion agent improved the stability of the mortar, and the graphene oxide and modified polymer emulsion enhanced the strength and durability of the mortar.

[0077] The above embodiments are only used to illustrate the technical methods of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical methods of the present invention without departing from the spirit and scope of the technical methods of the present invention.

Claims

1. A template for fabricating high-crack-resistant self-leveling concrete mortar components, characterized in that, It includes two symmetrically arranged building templates (1), and multiple threaded sleeves (5) arranged in parallel on both sides of the building templates (1). Each threaded sleeve (5) is threaded with two symmetrically arranged threaded rods (6), and each threaded rod (6) is threaded with a clamping plate (4). A pre-clamping mechanism is provided on the threaded sleeve (5) for pre-clamping two building templates (1); The pre-clamping mechanism includes a connecting block (8) fixedly installed on the threaded sleeve (5). Each connecting block (8) is fixedly installed with a sleeve (9). Each sleeve (9) has two connecting rods (11) slidably connected inside. A spring (10) is provided between the two connecting rods (11). A clamping plate (12) is provided at the end of each connecting rod (11) away from the spring (10).

2. A template for fabricating high-crack-resistant self-leveling concrete mortar components according to claim 1, characterized in that, Each of the clamping plates (12) is equipped with a card block (3), and the outer wall of the building template (1) is provided with a card slot (2) for matching use.

Images