The application of concrete topping spreaders in seamless industrial floor construction

    In large-scale concrete floor projects such as industrial plants, logistics and warehousing centers, and large underground garages, joint treatment is the core link that determines the stability and service life of the floor structure. Conventional construction joints, due to their insufficient strength and weak resistance to deformation, are prone to problems such as misalignment, warping, and chipping, which seriously affect the load-bearing performance and functional use of the floor. As a specialized component specifically designed to address such issues, the structural design and application logic of armor joints are of crucial significance for enhancing the quality of floor engineering. Armor joint (also known as armor joint, armored joint, Bama joint, Ba Ma joint, zebra joint) is a composite structural component specially designed for strengthening the joint body of concrete floors. It is usually composed of high-strength metal substrates (such as galvanized steel plates, stainless steel plates, aluminum alloys, etc.), elastic sealing components (EPDM rubber strips, butyl rubber gaskets, etc.) and positioning and fixing systems (shear plates, anchor fasteners, support components). The edge of the seam is a straight metal/composite material cross-section. The upper and lower edges of the seam opening are flush with the ground/wall, without any additional curvature or inclination Angle, and the shape is simple. The edge of the seam is inclined to one side (the slope is usually 3°-5°), or both sides are beveled, forming a groove shape that is "low in the middle and high on both sides". It is advisable to pair it with more metal covers (such as stainless steel and galvanized steel plates). The top adopts an S-shaped curved surface design, formed by stamping steel plates. Combined with the force transmission plate and the telescopic sheath sleeve, it can achieve free expansion and contraction in both longitudinal and transverse directions. Triangular rib design: Triangular reinforcing ribs are welded on the outside of the steel plates of the sub-compartments to enhance the overall rigidity. Thick thrust plate: The thickness of the thrust plate can be selected from 6 to 12mm (material Q355), and it is suitable for heavy-duty areas above 80kN/m². Customized according to the diameter of the column, it is fixed with single-sided support, and the steel plates of the compartments surround the column to form a circular joint. The top edge guard is a flat steel plate, which is cut in the middle along a trapezoidal toothed curve, and the lower part is a punched and bent compartment steel plate and a sawtooth-shaped fixed plate. Cross-shaped, T-shaped, Y-shaped and other combined designs: They are used for the cross-connection of multiple Armor joints. For instance, a cross-shaped node Armor joint can simultaneously connect four straight seams. A stainless steel drainage ditch is integrated at the bottom of the Armor joint, and it is designed in an integrated manner with the steel plate of the compartment. The force transmission plate and the sheath are connected by sliding, allowing the floor to expand and contract freely when the temperature changes. Isolation joint: Also known as "structural separation joint", it is mainly used to achieve physical isolation between the concrete floor and the surrounding building structure. The applicable scenarios are the junctions between the floor and non-floor structures such as walls, reinforced concrete columns, equipment piers and abutments, and embedded part foundations. It separates two structures with different shrinkage coefficients and different load-bearing characteristics through joints, avoiding floor cracking caused by uncoordinated structural deformation. Elastic sealing materials (such as polyurethane sealant) are usually used for filling to ensure the separation effect and water resistance. Cutting joint: Also known as "shrinkage control joint", it is a preset joint body set up to address the problem of irregular cracks that are prone to occur after large-scale concrete pouring. The construction time is after the initial setting of the concrete and before the final setting (usually 24-48 hours after pouring, specifically adjusted according to the strength grade of the concrete). It is cut into shape with a special cutting machine, and the joint depth is usually 1/3 to 1/2 of the floor thickness. The joint spacing is determined according to the strength of the concrete and the ambient temperature (generally 4-6 meters). Its core function is to guide the concrete shrinkage stress to be concentrated and released at the preset joint, avoiding random cracks in the floor. Construction joint/partition joint: A construction joint is a temporary joint set at a preset position due to the excessive area of the floor pouring and the inability to carry out continuous construction at one time, used to divide the pouring sections. The partition joint is a permanent joint body that divides a large area of the floor into fixed-sized partition blocks to control the shrinkage and deformation of the floor in the long term. Essentially, both are "secondary pouring interfaces" of concrete. Such joints, due to the low bonding strength of the concrete joint surface and the uneven distribution of aggregates, have become weak links in the floor structure and are high-risk areas for diseases. Combining the characteristics of concrete structures with the force logic of the floor, the core reasons can be attributed to two points: The construction joint serves as the interface between two concrete pours. Due to the influence of the pouring interval time, the strength development of the concrete poured before and after is not synchronized, and the bonding force at the joint surface is insufficient. When the floor is subjected to vehicle rolling and equipment loads, the blocks on both sides of the joint body are prone to relative displacement, resulting in misalignment (height difference) or warping deformation. After the construction joint is opened, the concrete around the joint is prone to settlement of the internal aggregates under the action of vibration loads (such as vehicle passage and equipment operation), resulting in the separation of mortar and aggregates, and the density and strength of the concrete at the joint decrease. When the load exceeds the load-bearing limit of the joint concrete, edge cracking, corner chipping and other damages are prone to occur, and the damage will gradually expand after it occurs, affecting the structural stability of the entire silo block. Due to the inherent defects of construction joints, in projects with high requirements for the load-bearing capacity and durability of the floor, the use of armored joints has irreplaceable technical value. The metal frame of the armored joint can directly form a rigid connection with the concrete on both sides of the joint body, evenly transmitting the concentrated load at the joint to the surrounding floor, avoiding misalignment and warping caused by concentrated load. Meanwhile, the flexural and compressive properties of the metal substrate can effectively protect the joint concrete and prevent edge chipping caused by aggregate settlement. The elastic sealing components of the armored joint can accommodate the shrinkage deformation of the concrete floor (usually adaptable to ±5mm displacement) and slight settlement of the foundation. This not only prevents the joint from being cracked due to deformation but also ensures sealing performance, preventing oil stains and rainwater from seeping into the foundation. Traditional construction joints need to be repaired on average every 3 to 5 years (such as removing damaged concrete and refitting sealant), and in severe cases, local rework is required. The armored seam, with the anti-corrosion performance of the metal substrate (galvanization, anodizing treatment) and the aging resistance of the sealing components, can have a service life of 15 to 20 years, significantly reducing the frequency and cost of later maintenance. The layout of the armor joints should be determined comprehensively in combination with the floor structure form, load characteristics and usage scenarios. The core should follow the following five technical principles to ensure the effective performance of its functions: Arrange the Armor joints laterally along the load-bearing columns to divide the floor into independent compartments. The size of each compartment must be strictly controlled within 30m×30m. Exceeding this size will cause the shrinkage stress of the concrete to exceed the bearing limit of the armor joint, which is prone to cause cracking in the middle of the silo block. It is strictly prohibited to arrange Armor joints along the direction of directional main channels (such as forklift channels in logistics warehouses and entry and exit lanes in garages) – to prevent vehicle tires from long-term rolling along the seam opening, accelerating the wear of sealing components and deformation of the seam opening. It can be arranged perpendicularly to the direction of the passage to ensure smooth vehicle passage. The length-to-width ratio of floor compartments should be controlled within 1:1.5. If the aspect ratio is too large (such as 1:2 or above), the warehouse blocks are prone to torsional stress due to unidirectional contraction, which may lead to the failure of the Armor joint sealing assembly or the deformation of the metal frame. When armor joints encounter reinforced concrete columns, walls, equipment foundations and other structural bodies, a avoidance distance of 50-100mm should be reserved to prevent the deformation of the structural body and the floor from interfering with each other, which may cause the joint to be squeezed and damaged. Regardless of whether the floor adopts the form of soil foundation bearing or pile foundation bearing, PE sliding film must be laid at the contact surface between the floor and the foundation as well as the contact surface between the floor and the pile cap. PE sliding film can reduce the adhesion between concrete and the base layer, prevent floor cracking caused by foundation settlement, and at the same time provide a stable positioning reference for armor joints, ensuring installation accuracy. In line with the requirements of engineering applications, compared with traditional construction joints and cutting joints, armored joints have the following irreplaceable functional advantages: The metal frame can withstand a uniformly distributed load of 3-5 tons per square meter, making it suitable for high-frequency load scenarios such as heavy-duty forklifts and freight vehicles. The concrete at the joint will not crack due to concentrated loads. It can accommodate ±5mm contraction displacement of concrete floors and ±3mm settlement displacement of the foundation. The elastic sealing components expand and contract synchronously with the deformation, always maintaining the sealed state of the joint. The metal frame forms a "rigid constraint" on the concrete around the joint, preventing aggregate settlement and mortar loss caused by vibration, and fundamentally solving the problems of chipped edges and broken corners. It can be adapted to different types of foundation floors such as soil foundation and pile foundation, and achieve precise fixation in combination with PE sliding film. The installation process is seamlessly connected with the floor pouring procedure, without the need for additional complex processes. The metal substrate undergoes anti-corrosion treatment (galvanizing, anodizing), featuring strong weather resistance and rust resistance. The sealing components are made of anti-aging rubber material, with a service life of over 15 years, significantly reducing the later maintenance cost of the floor. When installing expansion joints, it is essential to meet the requirements of the floor design for levelness and straightness. During the installation process, a level should be used for inspection to ensure that they are precisely vertical in the vertical direction. The force transmission plate should be kept level so that it can slide freely within the plastic sheath when the floor expands and contract freely without generating resistance. In addition, a laser or optical level should also be used for level control and inspection. Step 1 Use nylon thread to position the designed expansion joint. With the assistance of the installation bracket, the straightness and levelness of the Armor joint are adjusted using an optical level until the design value is reached. Step 2 Start installation from the column or wall, and the Armor joint can only be fixed on one side. Use short-threaded steel bars with a diameter of 12 to 14mm to drive into the foundation on one side of the armor joint. Drive two fixed steel bars into each support position, and then weld the armor joint to the fixed steel bars with short steel bars with a diameter of 12mm to 14mm. Step 3 On the first day, pour the unsupported side. The next day, remove the supports and cut off the fixed reinforcing bars above the base layer (to prevent the floor and foundation from being locked and unable to expand or contract freely due to the presence of the fixed reinforcing bars). And pour the concrete on the other side of the armor joint. Step 4 When the curing period of the concrete is over, the edge steel of the armor joint will be gradually and naturally pulled apart. After the contraction stabilizes, remove the garbage in the joint, then fill the elastic adhesive, clean and protect the construction site, and cure for more than 3 days. As a key component for enhancing the quality of concrete floor engineering, the application value of armor joints lies not only in solving the disease problems of traditional joints, but also in improving the long-term stability and load-bearing reliability of the floor structure through standardized structural design and standardized layout principles. For engineering practitioners, it is necessary to strictly follow core principles such as "control of compartment size, reasonable avoidance of passageways, and avoidance of structural structures", and select models in combination with the usage scenarios of the floor and the conditions of the foundation. Only in this way can the technical advantages of the armor joint be fully exerted, and the construction quality and full life cycle value of the floor project be fundamentally improved.   Note: The parameters provided in this document are for reference only and are not mandatory. Due to differences in technical characteristics between different brands and models of laser levelers, please consult the manufacturer for a suitable solution before actual operation. This reference document assumes no responsibility for any issues arising from failure to follow the manufacturer's instructions.    

What are the key points of quality control in the construction of diamond wear-resistant flooring? With the continuous development of the industrial and commercial fields, diamond wear-resistant flooring is increasingly widely used in factories, warehouses, parking lots and other places due to its high strength, wear resistance, anti-slip and beautiful appearance. However, the construction quality of diamond wear-resistant flooring is directly related to its service life and performance. Therefore, it is very important to strictly control the key points of quality during the construction process. This article will elaborate on the key points of quality control in the construction of diamond wear-resistant flooring in order to provide a useful reference for the majority of construction personnel. 1. Material selection and testing standards The selection of materials is the basis for ensuring the quality of diamond wear-resistant flooring. First of all, high-quality diamond aggregates that meet national standards should be selected to ensure that their performance indicators such as hardness, wear resistance, and particle size distribution meet the requirements. Secondly, a high-performance special binder for wear-resistant flooring should be selected to ensure that it has good bonding properties with diamond aggregates. Finally, for other auxiliary materials required for construction, such as interface agents and sealants, products with reliable quality and stable performance should also be selected. In terms of material testing, the materials such as diamond aggregate and binder entering the factory should be strictly inspected and accepted, including appearance inspection and performance testing. Materials that do not meet the requirements should be resolutely returned to ensure the qualification of the construction materials. 2. Base treatment and flatness requirements Base treatment is a key link in the construction of diamond wear-resistant floor. Before construction, the base should be thoroughly cleaned to remove oil, floating dust and other debris to ensure that the base is clean and dry. For bases with defects such as cracks and potholes, repairs and leveling should be carried out to ensure that the base is flat and dense. Flatness is one of the important indicators for evaluating the quality of diamond wear-resistant floor. During the construction process, the flatness should be strictly controlled to ensure that the surface of the floor after construction is flat and smooth. To this end, mechanical grinding, scraping and other methods can be used to pre-treat the base to improve the flatness of the base. 3. Construction environment and temperature and humidity control The construction environment has a significant impact on the quality of the gold side sand floor. During the construction process, the construction environment should be kept dry and well ventilated to avoid construction in a humid and rainy environment. At the same time, the temperature of the construction site should be strictly controlled to avoid construction under conditions of too high or too low temperature, so as not to affect the curing speed of the material and the performance of the floor. In addition, temperature is also a key factor affecting the construction quality. In a high temperature environment, the moisture in the material is not easy to volatilize, which may cause problems such as sanding and opening of the floor. Therefore, the material ratio and construction process should be adjusted according to the ambient temperature during construction to ensure the quality of the floor. 4. Construction process and technical points The construction process of diamond wear-resistant floor includes primer construction, diamond aggregate spreading, wear-resistant layer construction, sealing treatment and other steps. In each step, the construction specifications should be strictly followed to ensure the construction quality. In the primer construction, the primer should be ensured to be uniform and leak-free to enhance the adhesion between the floor and the base. The spreading of diamond aggregate should be uniform and appropriate to avoid problems such as uneven thickness and aggregate accumulation. The construction of the wear-resistant layer should be carried out in multiple times, and polishing and trimming should be carried out in time after each construction to ensure that the floor surface is flat and smooth. Finally, sealing treatment is carried out to improve the wear resistance and aesthetics of the floor. In terms of technical points, the following points should be noted: First, control the construction speed to avoid quality problems caused by too fast or too slow; second, ensure the cleanliness and integrity of the construction equipment to avoid equipment failure affecting the construction quality; third, strengthen on-site construction management to ensure the continuity and stability of the construction process. 5. Post-maintenance and hardening period management After the construction of diamond wear-resistant floor is completed, it needs to be maintained and hardened for a certain period of time. During the maintenance period, the floor surface should be kept dry and clean to avoid damage to the floor by liquids such as water and oil. At the same time, heavy rolling or mechanical operation on the floor should be avoided to avoid damage to the floor. The hardening period is a critical period for the formation of floor strength and wear resistance. During the hardening period, the maintenance and care of the floor should be strengthened to ensure its normal curing. After the hardening period, the floor can be comprehensively inspected to ensure that it meets the design requirements. 6. Quality inspection and acceptance standards Quality inspection is an important means to ensure the construction quality of diamond wear-resistant floor. During and after the construction, the floor should be regularly inspected for quality, including flatness, hardness, wear resistance, compressive strength and other indicators. For parts that do not meet the requirements, rectification and treatment should be carried out in a timely manner. Acceptance standards are an important basis for evaluating the construction quality of diamond wear-resistant floor. During the acceptance process, acceptance should be carried out in strict accordance with national standards and design requirements to ensure that all indicators of the floor meet the requirements. For floors that fail the acceptance, they should be rejected and the construction unit should be required to make rectifications. 7. Common problems and preventive measures During the construction of diamond wear-resistant floor, common problems such as sanding, cracking, and unevenness may occur. The occurrence of these problems is often related to factors such as material quality, construction technology, and environmental conditions. Therefore, during the construction process, effective preventive measures should be taken to avoid the occurrence of these problems. For the problem of sanding, reliable diamond aggregate and binder can be selected to ensure that the material has good bonding properties. At the same time, strengthen the base treatment to improve the density and flatness of the base. For cracking problems, the construction speed and temperature should be controlled to avoid construction at too fast or too high a construction speed and too high or too low a temperature. In addition, strengthen the post-maintenance and hardening period management to ensure the normal solidification of the floor. Unevenness is an important factor affecting the aesthetics and performance of the floor. In order to prevent the occurrence of unevenness, the flatness of the base layer should be strictly controlled, and the base layer should be pre-treated by mechanical grinding, scraping and other methods. In addition to the above-mentioned aspects, the quality control points of diamond wear-resistant floor construction also involve the professional quality of construction personnel, the selection and maintenance of construction equipment, and safety management during construction. These aspects will be further elaborated below. First of all, the professional quality of construction personnel is crucial to ensuring construction quality. Construction personnel should undergo professional training, be familiar with the construction process and technical requirements of diamond wear-resistant floor, and be able to master the operation methods of construction equipment. At the same time, construction personnel should also have a high sense of responsibility and a rigorous work attitude, operate strictly in accordance with construction specifications, and ensure that each construction step meets quality requirements. Secondly, the selection and maintenance of construction equipment are also key factors affecting construction quality. Construction equipment with stable performance and easy operation should be selected to ensure that the equipment can operate normally during the construction process. At the same time, regularly maintain and service the construction equipment, check the wear and performance of the equipment, replace damaged parts in time, and ensure the integrity and reliability of the equipment. In addition, safety management during the construction process is also an aspect that cannot be ignored. Strict safety management systems and operating procedures should be formulated to ensure the personal safety of construction personnel and the stable operation of construction equipment. Obvious safety warning signs and protective measures should be set up at the construction site to avoid safety accidents. At the same time, safety education and training should be carried out for construction personnel to improve their safety awareness and self-protection ability. In the construction process of diamond wear-resistant floor, attention should also be paid to environmental protection and energy saving. Select materials and construction equipment with good environmental performance to reduce the emission of pollutants such as noise and dust during construction. At the same time, optimize the construction process and process, reduce energy consumption and resource consumption, and achieve green construction and sustainable development. In summary, the quality control points of diamond wear-resistant floor construction involve many aspects, which require the cooperation and guarantee of construction personnel, equipment, materials, environment and other aspects. Only under the premise of strictly controlling the quality points of each construction link can the construction quality and performance of diamond wear-resistant floor be guaranteed to reach the expected goals. Finally, it should be emphasized that the construction quality control of diamond wear-resistant flooring is not only related to the current use effect, but also to its long-term service life and performance. Therefore, construction units and construction personnel should always adhere to quality as the core, user demand as the guide, and continuously improve their own technical level and professional quality to provide users with more high-quality and reliable diamond wear-resistant flooring products and services. Before concluding this article, it should also be pointed out that with the continuous advancement of science and technology and the continuous innovation of construction technology, the construction quality control of diamond wear-resistant flooring will continue to face new challenges and opportunities. In the future, we should continue to strengthen the research and exploration of diamond wear-resistant flooring construction technology, continuously improve and optimize construction technology and processes, improve construction quality and efficiency, and make greater contributions to promoting the healthy development of the flooring industry. In summary, the key points of quality control of diamond wear-resistant flooring construction are a complex and systematic project, which requires us to strictly control every link in the construction process, pay attention to details and standardization. Only in this way can we ensure that the quality and performance of diamond wear-resistant flooring are in the best state and create a safe, comfortable and beautiful use environment for users.

When it comes to the rust of concrete laser leveling machines, it does not mean that the equipment is easy to rust. It is because of its improper use that these situations will occur. If you want to avoid the rust of equipment, it is actually very simple. Our manufacturer will introduce you to the tips on how to prevent the rust of concrete laser leveling machines in the following article. I hope you can read it carefully and look forward to your attention. 1. The rust of concrete laser leveling machines is caused by our inadequate use. Because there is no reasonable maintenance in the later period after use, the concrete laser leveling machines are rusted. The reason is that they are aged after a long time of use, so they cause rust. Although the main parts of the concrete laser leveling machine are made of high-quality steel, they are treated with heat treatment, tempering, plating and other processes, and the hardness is extremely high. Generally, rust rarely occurs. Unless you do not pay attention to maintenance, a small part of the parts may rust over time. How to prevent the rust of concrete laser leveling machines is something we all need to understand. Parts should be frequently added with butter or anti-rust oil to prevent the machine from rusting. Gears, sprockets and other parts need to be filled with lubricating butter once every fifteen days. 2. The cleaning of the leveler should be done well. The leveler roller should be cleaned. Some factories may have a lot of dust or the raw materials may be unclean, which may cause the leveler roller to be dirty. When leveling the materials, the materials may be contaminated or scratched, resulting in unqualified products. Therefore, you should always pay attention to cleaning the leveler roller. When cleaning the roller, you need to use long cloth strips and anti-rust cleaning oil. First, spray the anti-rust cleaning oil on the leveler roller and stack the metal materials together, then switch the leveler to manual mode, press forward to put the metal materials and cloth strips into the leveler roller together, wait for the cloth strips to come out of the discharge port, then remove the metal materials, and keep the cloth strips in the leveler roller, then switch the leveler to automatic mode, hold the cloth strips at the inlet with both hands, and use the rolling of the roller and the friction of the cloth strips to clean the dirt on the roller, so as to achieve the effect of cleaning the leveler roller. There are some dangers in this cleaning process, so professional operators should be invited to operate, and safety must be paid attention to. This section mainly shares with you how to prevent rust on concrete laser leveling machines. However, due to time constraints, I can only share it here. If you have other questions you need to know, you can contact our customer service online and our customer service will provide you with timely assistance.