Pump lubricating agent for pumping of concrete ground pump and application of pump lubricating agent

Abstract

The invention relates to the field of pumping concrete, and particularly discloses a pump lubricating agent for pumping of a concrete ground pump and application of the pump lubricating agent. The pump lubricating agent for pumping of the concrete ground pump comprises the following components in parts by weight: 100 parts of solid powder particles, 1-10 parts of a powder particle suspension stabilizer and 30-150 parts of water, the solid powder particles comprise a mixture of two or more of fly ash, concrete mortar waste residues, machine-made sand, tailing sand and limestone powder, and the powder particle suspension stabilizer is a mixture of two or more of the fly ash, the concrete mortar waste residues, the machine-made sand, the tailing sand and the limestone powder. The powder particle suspension stabilizer comprises a mixture of two or more of a quaternary ammonium salt suspending agent, a polyacrylic acid suspending agent, an alkylphenol suspending agent, a polyhydric alcohol suspending agent, a sulfonic acid group suspending agent and a stearic acid suspending agent. The pump lubricating agent for pumping of the concrete ground pump can be used for lubricating a pumping pipeline of the ground pump, and the problems of pipe blockage and slurry leakage when an existing pump lubricating agent is used in the ground pump are solved.

Description

Technical Field

[0001] The present application relates to the field of concrete pumping, and more specifically, to a pump lubricant for concrete ground pumping and its application. Background Art

[0002] In modern construction, ready-mixed concrete pumping technology is widely used due to its high efficiency and convenience, especially in the construction of high-rise and super-high-rise buildings. This technology mainly uses two methods to transport concrete: overhead pumps and ground pumps. These two pumping methods have their own advantages and can meet the needs of different construction environments and conditions.

[0003] During concrete pumping, in order to ensure that concrete can pass through the pump pipe smoothly and stably and reduce the friction between the concrete and the pump pipe wall, it is very important to wet and lubricate the pump pipe. Therefore, pump-wetting mortar or pump-wetting agent is commonly used in construction.

[0004] Although lubrication treatment by pump mortar is effective, the consumption of pump mortar is generally large. Long-term and large-scale use of pump mortar will significantly increase the cost of the construction unit. The pump lubricant mainly changes the components and proportions of chemical thickeners to obtain a polymer pump lubricant product that can replace the pump mortar. This polymer pump lubricant product has been used in concrete sky pump construction and has achieved good results, but the application effect in concrete ground pump construction is not ideal, often causing concrete pumping pipe blockage, because compared with the sky pump pipe, the ground pump pipe is usually very long, and the pump pipe is often connected on site, and the gap between adjacent pump pipes is large. The pump lubricant prepared with this type of polymer material does not have solid powder particles, resulting in this type of product being unable to fill the gap between the pump pipes during ground pumping, and the concrete leakage phenomenon is serious during concrete pumping, resulting in concrete pumping failure. Summary of the invention

[0005] In order to solve the problems of pipe blockage and slurry leakage when the existing pump lubricant is used in a ground pump, the present application provides a pump lubricant for concrete ground pumping and its application.

[0006] The present application provides a pump lubricant for concrete ground pumping, which adopts the following technical solution: A pump lubricant for concrete ground pumping, the components of which include 100 parts of solid powder particles, 1-10 parts of powder particle suspension stabilizer, and 30-150 parts of water by weight, the solid powder particles include a mixture of two or more of fly ash, concrete mortar waste residue, machine-made sand, tailings sand and limestone powder, and the powder particle suspension stabilizer includes a mixture of two or more of quaternary ammonium salt suspension agents, polyacrylic acid suspension agents, alkylphenol suspension agents, polyol suspension agents, sulfonic acid suspension agents and stearic acid suspension agents.

[0007] By adopting the above technical solution, the traditional polymer pump lubricant is difficult to fill the gaps between the pump pipes during the pumping process because it does not contain solid powder particles, especially the gaps at the pump pipe connections on site are large, which easily leads to pipe blockage during concrete pumping. The pump lubricant provided by the present application is added with solid powder particles, which can effectively fill the gaps between the pump pipes and reduce the resistance of the concrete during the pumping process, thereby significantly reducing the risk of pipe blockage. The addition of solid powder particles not only helps to fill the gaps, but also increases the consistency and stability of the pump lubricant. During the pumping process, these particles can form a certain skeleton structure to prevent the concrete slurry from leaking out of the gaps in the pump pipe, effectively solving the problem of leakage. By optimizing the components and proportions of the pump lubricant, the pump lubricant provided by the present application can significantly improve the pumping performance of the concrete, making the concrete smoother during the pumping process, thereby improving the pumping efficiency and reducing construction time and cost. The solid powder particles in the pump lubricant may include waste or by-products such as fly ash and concrete mortar slag. The use of these materials not only helps to reduce environmental pollution, but also realizes the recycling of resources, which is in line with the concept of sustainable development.

[0008] Optionally, the weight ratio of the particle suspension stabilizer to the solid powder particles is (0.03-0.07):1.

[0009] By adopting the above technical solution, this ratio range ensures that the suspension stabilizer effectively wraps the solid particles, enhances the suspension performance of the particles in the liquid, prevents precipitation, and maintains the uniformity of the mixture. The ratio of the suspension stabilizer in this application helps to maintain good fluidity, making the pump lubricant smoother during long-distance pumping, reducing the possibility of pipe blockage, making the lubricating layer more stable, reducing the friction between the concrete and the pipe wall, improving pumping efficiency, and reducing energy consumption. Avoiding excessive use of suspension agents not only saves costs, but also prevents negative effects on the performance of the mixture, ensuring economy and practicality.

[0010] Optionally, the weight ratio of water to solid powder particles is (0.8-1.2):1.

[0011] By adopting the above technical solution, the weight ratio of water to solid powder particles is (0.8-1.2):1. This ratio ensures that the pump lubricant has suitable consistency and fluidity, enhances adhesion, effectively fills the gaps in the pump pipe, and reduces leakage. At the same time, the optimized moisture content improves construction efficiency, ensures good stability during long-distance pumping, reduces the risk of pipe blockage, and achieves a balance between performance and construction needs.

[0012] Optionally, the solid powder particles include 30 parts of fly ash, 50 parts of machine-made sand, and 20 parts of limestone powder.

[0013] By adopting the above technical solutions, the combination of fly ash and machine-made sand provides an ideal particle distribution, ensuring effective filling of pump pipe gaps and reducing slurry leakage. The large proportion of machine-made sand provides solid support and enhances the overall stability of the mixture. The appropriate amount of limestone powder improves the fluidity of the slurry, ensuring smooth pumping and avoiding sedimentation. The reasonable ratio of each component ensures performance while controlling costs, achieving an economical and efficient construction solution.

[0014] Optionally, the powder particle suspension stabilizer includes 30 parts of a polyol suspending agent, 30 parts of a stearic acid suspending agent, and 40 parts of a sulfonic acid suspending agent.

[0015] By adopting the above technical solutions, polyol suspending agents provide good water retention, ensure uniform distribution of solid particles and prevent precipitation. Stearic acid suspending agents improve the lubrication performance of the particle surface, reduce friction and improve pumping efficiency. Sulfonic acid suspending agents enhance the binding force between particles and liquids, ensuring that the mixture remains consistent during pumping. This combination of suspending agents provides stability while maintaining appropriate fluidity, reducing resistance and clogging risks during pumping.

[0016] Optionally, 5-15 parts of ultra-high molecular weight polyethylene are also included.

[0017] By adopting the above technical solutions, UHMWPE provides excellent wear resistance due to its high molecular weight, which can effectively reduce the wear of pump pipes and equipment, significantly extend the service life of equipment, and reduce maintenance and replacement costs. Its low friction coefficient helps to form a smooth surface, reduce the friction between concrete and the inner wall of the pump pipe, ensure the smoothness of concrete during pumping, and reduce energy consumption. Excellent impact resistance ensures that the mixture can maintain its integrity under high-pressure pumping conditions and prevent structural damage caused by pressure fluctuations. While improving wear resistance and lubricity, the addition of UHMWPE helps to maintain the stable fluidity of the mixture, reduce the risk of pipe blockage, and improve the continuity and efficiency of construction.

[0018] Optionally, 1-10 parts of agar-modified sodium polyacrylate are also included.

[0019] By adopting the above technical solution, agar-modified sodium polyacrylate can form a stable colloidal system in water, effectively preventing the agglomeration and sedimentation of solid powder particles. When an appropriate amount of agar-modified sodium polyacrylate is added to the pump lubricant, these polymer chains can be adsorbed on the surface of the solid particles to form a protective layer, thereby enhancing the suspension stability of the entire system. This helps to ensure that the pump lubricant remains in a uniform dispersion state during the pumping process and improves the pumping efficiency. Agar-modified sodium polyacrylate can form a network structure between solid particles, lock in moisture, and prevent moisture from being lost during the pumping process. The addition of agar-modified sodium polyacrylate can also form a lubricating layer between solid particles, reduce the friction resistance between particles, and make it easier for the pump lubricant to pass through the pump tube. This helps to reduce energy consumption during the pumping process and improve pumping efficiency.

[0020] In a second aspect, the present application provides an application of a pump lubricant for concrete ground pumping, using the following technical solution: An application of a pump lubricant for concrete ground pumping, comprising the use of the pump lubricant for lubricating a ground pump pumping pipeline.

[0021] In summary, this application has the following beneficial effects: 1. Since the present application effectively solves the problems of pipe blockage and slurry leakage that are prone to occur during ground pumping of traditional polymer pump lubricants by adding solid powder particles including fly ash, concrete mortar waste residue, etc., and combining them with an appropriate amount of powder particle suspension stabilizer and water, it significantly improves the pumping performance of concrete, reduces construction costs, and at the same time realizes the recycling of resources and environmental protection, which is in line with the concept of sustainable development.

[0022] 2. In the present application, it is preferred to precisely control the weight ratio of the particle suspension stabilizer to the solid powder particles to be (0.03-0.07):1, and the weight ratio of water to the solid powder particles to be (0.8-1.2):1, use a reasonable ratio of fly ash, machine-made sand and limestone powder as solid powder particles, and select a combination of polyols, stearic acid and sulfonic acid suspension agents as suspension stabilizers, which effectively enhances the suspension performance of the particles and the fluidity of the mixture, ensures the stability and smoothness of the pump lubricant during long-distance pumping, reduces the risk of pipe blockage and leakage, and achieves an economical, efficient and environmentally sustainable construction solution.

[0023] 3. In this application, it is preferred to add ultra-high molecular weight polyethylene (5-15 parts) and agar-modified sodium polyacrylate (1-10 parts), which not only significantly improves the wear resistance and lubrication performance, reduces the wear of pump pipes and equipment, reduces energy consumption, but also enhances the suspension stability, prevents the agglomeration and sedimentation of solid powder particles, and ensures the uniform dispersion and smoothness of the pump lubricant during the pumping process. These improvements jointly reduce the risk of pipe blockage and slurry leakage, extend the service life of equipment, improve construction continuity and efficiency, and maintain economy and environmental protection. DETAILED DESCRIPTION

[0024] The present application is further described in detail below in conjunction with the examples. It is particularly noted that if no specific conditions are specified in the following examples, the experiments are carried out according to conventional conditions or the conditions recommended by the manufacturer. Unless otherwise specified, the raw materials used in the following examples can be obtained from common commercial sources.

[0025] Preparation Example of Agar-modified Sodium Polyacrylate Preparation Example 1 A preparation method of agar-modified sodium polyacrylate: Prepare 40 kg of sodium polyacrylate, 4 kg of polyol, and 0.5 kg of hydrogen peroxide.

[0026] Weigh 3 kg of agar with a purity of more than 99%, put it into a container containing 30 kg of distilled water, heat the container to 90° C. and stir to completely dissolve the agar in the distilled water.

[0027] Sodium polyacrylate, polyol and hydrogen peroxide were added to the dissolved agar solution, and the polymerization reaction was carried out at 85° C. for 4 hours. After the reaction, the pH value of the solution was adjusted to neutral with sodium hydroxide.

[0028] The polymerized product is centrifugally filtered and washed with ethanol. After washing, it is placed in a drying oven to dry to obtain agar-modified sodium polyacrylate. Example

[0029] In this application, fly ash uses Xunluo New Materials' secondary fly ash, concrete mortar waste uses recycled LC75 lightweight aggregate lightweight concrete waste, machine-made sand uses Xinquan 001 type construction water-washed sand, tailings sand uses Shuntianda STD012 secondary mine tailings, and limestone powder uses Jinming S-01 type with a density of 2.7g / cm 3 Limestone powder, quaternary ammonium salt suspending agent uses McLean reagent P871972 polyquaternium-28, polyacrylic acid suspending agent uses carbomer, alkylphenol suspending agent uses SOPAS-270, polyol suspending agent uses glycerol, sulfonic acid suspending agent uses sulfonate dispersant, stearic acid suspending agent uses McLean reagent S3381 sodium stearate.

[0030] Example 1 A pump lubricant for concrete floor pumping: Prepare 50kg of fly ash, 50kg of concrete mortar waste residue, 2.5kg of quaternary ammonium salt suspending agent, 2.5kg of polyacrylic acid suspending agent, and 100kg of deionized water; mix the quaternary ammonium salt suspending agent and the polyacrylic acid suspending agent to obtain a powder particle suspension stabilizer; mix the fly ash and the concrete mortar waste residue, and then grind them through a grinder to obtain solid powder particles with an average particle size of ≤1mm; mix the solid powder particles, deionized water and the powder particle suspension stabilizer to obtain a pump lubricant.

[0031] Example 2 A pump lubricant for concrete ground pumping: the difference from Example 1 is that the solid powder particles use 40kg fly ash, 30kg concrete mortar waste residue, and 30kg machine-made sand.

[0032] Example 3 A pump lubricant for concrete ground pumping: the difference from Example 2 is that the solid powder particles use 25kg fly ash, 25kg concrete mortar waste residue, 25kg machine-made sand, and 25kg tailings sand.

[0033] Example 4 A pump lubricant for concrete ground pumping: the difference from Example 3 is that the solid powder particles use 20kg fly ash, 20kg concrete mortar waste residue, 20kg machine-made sand, 20kg tailings sand, and 20kg limestone powder.

[0034] Example 5 A pump lubricant for concrete floor pumping: The difference from Example 4 is that the powder particle suspension stabilizer uses 2kg quaternary ammonium salt suspension agent, 2kg polyacrylic acid suspension agent, and 1kg alkylphenol suspension agent.

[0035] Example 6 A pump lubricant for concrete ground pumping: The difference from Example 5 is that the powder particle suspension stabilizer uses 1.5kg quaternary ammonium salt suspension agent, 1.5kg polyacrylic acid suspension agent, 1kg alkylphenol suspension agent, and 1kg polyol suspension agent.

[0036] Example 7 A pump lubricant for concrete floor pumping: the difference from Example 6 is that the powder particle suspension stabilizer uses 1kg quaternary ammonium salt suspension agent, 1kg polyacrylic acid suspension agent, 1kg alkylphenol suspension agent, 1kg polyol suspension agent, and 1kg sulfonic acid suspension agent.

[0037] Example 8 A pump lubricant for concrete floor pumping: the difference from Example 7 is that the powder particle suspension stabilizer uses 1kg quaternary ammonium salt suspension agent, 0.8kg polyacrylic acid suspension agent, 0.8kg alkylphenol suspension agent, 0.8kg polyol suspension agent, 0.8kg sulfonic acid suspension agent and 0.8kg stearic acid suspension agent.

[0038] Example 9 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 100 kg of solid powder particles and 1 kg of powder particle suspension stabilizer are used.

[0039] Example 10 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 100 kg of solid powder particles and 3 kg of powder particle suspension stabilizer are used.

[0040] Embodiment 11 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 100 kg of solid powder particles and 6 kg of powder particle suspension stabilizer are used.

[0041] Example 12 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 100 kg of solid powder particles and 10 kg of powder particle suspension stabilizer are used.

[0042] Embodiment 13 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 100 kg of solid powder particles and 30 kg of water are used.

[0043] Embodiment 14 A pump lubricant for concrete ground pumping: the difference from Example 1 is that 100 kg of solid powder particles and 80 kg of water are used.

[0044] Embodiment 15 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 100 kg of solid powder particles and 120 kg of water are used.

[0045] Example 16 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 100 kg of solid powder particles and 150 kg of water are used.

[0046] Embodiment 17 A pump lubricant for concrete ground pumping: The difference from Example 1 is that 5 kg of ultra-high molecular weight polyethylene (Merck reagent 429015 type) is also added to the pump lubricant.

[0047] Embodiment 18 A pump lubricant for concrete ground pumping: the difference from Example 1 is that 10 kg of ultra-high molecular weight polyethylene is also added to the pump lubricant.

[0048] Embodiment 19 A pump lubricant for concrete floor pumping: the difference from Example 1 is that 15 kg of ultra-high molecular weight polyethylene is also added to the pump lubricant.

[0049] Embodiment 20 A pump lubricant for concrete ground pumping: the difference from Example 1 is that 1 kg of agar-modified sodium polyacrylate is also added to the pump lubricant, which is prepared by Preparation Example 1.

[0050] Embodiment 21 A pump lubricant for concrete ground pumping: the difference from Example 1 is that 5 kg of agar-modified sodium polyacrylate is also added to the pump lubricant, which is prepared by Preparation Example 1.

[0051] Embodiment 22 A pump lubricant for concrete ground pumping: the difference from Example 1 is that 10 kg of agar-modified sodium polyacrylate is also added to the pump lubricant, which is prepared by Preparation Example 1.

[0052] Comparative Example Comparative Example 1 A pump lubricant for concrete floor pumping: the difference from Example 1 is that only 100 kg of fly ash is used as solid powder particles.

[0053] Comparative Example 2 A pump lubricant for concrete ground pumping: The difference from Example 1 is that the powder particle suspension stabilizer only uses 5 kg of quaternary ammonium salt suspension agent.

[0054] Comparative Example 3 A pump lubricant for concrete floor pumping: Jinan Jinjuwang 0845 concrete pump lubricant is used.

[0055] Performance testing Detection Methods 40 horizontal pipes, each 3 m long, and 14 90° elbows were used to form a pumping pipeline. The pump lubricants prepared in the embodiments and comparative examples of the same mass were used to lubricate the pumping pipelines respectively, and the pumping pressure was the same. Concrete mortars of the same components were pumped, and the pumping conditions were observed and recorded.

[0056] Table 1 Test data Combining Examples 1-8 and Comparative Examples 1-3 and Table 1, it can be seen that compared with commercially available pump lubricating products, the pump lubricating agent in the present invention can pump concrete normally after lubricating the ground pump pipe, without loss of fluidity or pipe blocking. In the present application, by compounding a variety of solid powder particles with a variety of powder particle suspension stabilizers, the gaps between pump pipes can be effectively filled, the resistance of concrete during pumping can be reduced, and the risk of pipe blocking can be significantly reduced. The consistency and stability of the pump lubricating agent can also be increased, and the pumping performance of concrete can be significantly improved, so that the concrete is smoother during the pumping process, thereby improving pumping efficiency and reducing construction time and cost.

[0057] It can be seen from Example 1 and Examples 9-16 and Table 1 that by precisely controlling the weight ratio of the particle suspension stabilizer to the solid powder particles to be (0.03-0.07):1, and the weight ratio of water to the solid powder particles to be (0.8-1.2):1, a reasonable ratio of fly ash, machine-made sand and limestone powder is used as solid powder particles, and a combination of polyols, stearic acid and sulfonic acid suspension agents is selected as a suspension stabilizer, which effectively enhances the suspension performance of the particles and the fluidity of the mixture, ensures the stability and smoothness of the pump lubricant during long-distance pumping, reduces the risk of pipe blockage and slurry leakage, and achieves an economical, efficient and environmentally sustainable construction solution.

[0058] It can be seen from Example 1 and Examples 17-22 and Table 1 that by adding ultra-high molecular weight polyethylene and agar-modified sodium polyacrylate, not only the wear resistance and lubrication performance are significantly improved, the wear of the pump pipe and equipment is reduced, and the energy consumption is reduced, but also the suspension stability is enhanced, the agglomeration and sedimentation of the solid powder particles are prevented, and the uniform dispersion and smoothness of the pump lubricant during the pumping process are ensured. These improvements jointly reduce the risk of pipe blockage and slurry leakage, extend the service life of the equipment, improve the continuity and efficiency of construction, and maintain economy and environmental protection.

[0059] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A pump lubricant for concrete ground pumping, characterized in that: Its components include 100 parts of solid powder particles, 1-10 parts of powder particle suspension stabilizer, and 30-150 parts of water by weight. The solid powder particles include a mixture of two or more of fly ash, concrete mortar waste residue, machine-made sand, tailings sand and limestone powder. The powder particle suspension stabilizer includes a mixture of two or more of quaternary ammonium salt suspension agents, polyacrylic acid suspension agents, alkylphenol suspension agents, polyol suspension agents, sulfonic acid suspension agents and stearic acid suspension agents.

2. The pump lubricant for concrete ground pumping according to claim 1, characterized in that: The weight ratio of the particle suspension stabilizer to the solid powder particles is (0.03-0.07):

1.

3. The pump lubricant for concrete ground pumping according to claim 1, characterized in that: The weight ratio of water to solid powder particles is (0.8-1.2):

1.

4. The pump lubricant for concrete ground pumping according to claim 1, characterized in that: The solid powder particles include 30 parts of fly ash, 50 parts of machine-made sand and 20 parts of limestone powder.

5. The pump lubricant for concrete ground pumping according to claim 1, characterized in that: The powder particle suspension stabilizer comprises 30 parts of polyol suspension agents, 30 parts of stearic acid suspension agents, and 40 parts of sulfonic acid suspension agents.

6. The pump lubricant for concrete ground pumping according to claim 1, characterized in that: It also includes 5-15 parts of ultra-high molecular weight polyethylene.

7. The pump lubricant for concrete ground pumping according to claim 1, characterized in that: It also includes 1-10 parts of agar-modified sodium polyacrylate.

8. An application of a pump lubricant for concrete ground pumping as claimed in any one of claims 1 to 7, characterized in that: The pump lubricant is used for lubricating the pumping pipeline of the ground pump.

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