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Analysis of the application of the concrete laser leveling machine in large-area floor construction
Analysis of the application of concrete laser leveling machine in large-area floor construction
The concrete laser leveling machine is a device that uses the laser emitted by the transmitter as the reference plane, and controls the leveling head in real time through the laser receiver on the laser leveling machine, thereby achieving high-precision and rapid leveling of concrete. In large-area floor construction, its application is as follows:
Application advantages
– High-precision leveling:
The ground elevation is controlled by a laser system consisting of a laser transmitter, a laser receiver and a leveling rod. The laser transmitter emits lasers at a frequency of 10 times or even higher per second to form a control plane. The laser receiver on the laser leveling machine monitors the leveling head elevation in real time. The computer control system automatically adjusts the leveling head height according to the deviation to ensure the flatness and levelness of large-area floors. The accuracy can reach millimeter level (within ±3mm). Compared with traditional methods, the flatness and levelness are improved by more than 3 times.
– High construction efficiency:
Mechanized construction replaces a large number of manual labor, and the work efficiency is more than 3-5 times that of manual labor. For example, laser screed construction can adopt large-area compartments, with each compartment area up to 2,000 square meters, reducing the setting of construction joints, while reducing the work of force transmission rods and formwork support, speeding up the construction progress. Some large telescopic arm laser screeds can complete the leveling of 15 square meters of concrete each time, and some equipment can spread up to 5,000 square meters per day.
– Improve ground quality:
The powerful vibrator can vibrate at a frequency of up to 4,000 times/minute, which can ensure that the concrete is vibrated and compacted, making the entire paved concrete matrix homogeneous and dense, and the density and strength are more than 20% higher than traditional methods, effectively enhancing the wear resistance and impact resistance of the ground.
– Save labor costs:
The use of concrete laser screeds can save about 35% of labor, and some robot equipment can be remotely controlled by one person, which reduces manpower input while also reducing the labor intensity of workers.
– Flexible adaptation to various working conditions:
It can automatically control the longitudinal and transverse slopes, and can also be equipped with a three-dimensional special-shaped ground processing system to meet the construction of complex-shaped ground with high requirements such as drainage, such as squares with special drainage designs, airport runways and other places.
Application Cases
– Industrial Plant:
The third phase of the Flanders Plant is an industrial plant for manufacturing transmission parts assembly and testing. The steel fiber concrete metal wear-resistant floor area is 22,000 square meters and the floor thickness is 300 mm. It has high requirements for flatness and bearing capacity. The floor flatness error is required to be controlled within 3 mm. The use of laser leveling machine construction meets high standards.
– Underground Garage:
The underground garage of the National Treasury Unified Payment Center in Xicheng District, Beijing has an area of 10,500 square meters of metal wear-resistant floor and a floor thickness of 200 mm. The use of this equipment has achieved good results; in the construction of the basement concrete floor of a company's production headquarters project in Suzhou, the four-wheel laser floor leveling robot solved the construction problems of large volume, tight schedule, and high strength, and the flatness deviation was controlled within 5 mm.
– New Energy Vehicle Intelligent Industrial Park:
In order to ensure the safety of AGV transport vehicles, the Feixi New Energy Vehicle Intelligent Industrial Park EPC project has strict requirements on floor quality. The steel fiber concrete leveling process of this project uses a large laser leveling machine, which greatly improves the flatness of the ground.
Application Notes
– Equipment Debugging and Maintenance:
Before construction, the laser transmitter, receiver and other equipment must be accurately installed and debugged to ensure that their position is accurate and they operate normally; during the construction process, the equipment must be regularly inspected and maintained to avoid equipment failures affecting the construction quality and progress.
– Construction Site and Environment:
The construction site should be cleared of obstacles in advance to ensure that the laser signal is not blocked; at the same time, the impact of environmental factors such as temperature and wind on the construction should be considered, and corresponding measures should be taken to deal with it, such as paying attention to the concrete setting speed at high temperatures and avoiding the shaking of the laser transmitter in windy weather.
– Concrete Quality Control:
Strictly control the mix ratio, slump, initial setting time and other parameters of the concrete to ensure that the quality of the concrete is uniform and stable, so as to ensure the construction effect of the laser leveling machine.
– Personnel operating skills:
Operators must undergo professional training, be familiar with the operating procedures and techniques of the equipment, and be able to skillfully deal with various construction situations to ensure smooth construction.
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About the Author: Shandong Vanse Machinery Technology Co., Ltd.
Shandong Vanse Machinery Technology Co., Ltd. is a high-tech manufacturer specializing in concrete construction machinery, including laser screeds and related equipment. The company integrates R&D, production, and global sales, with products exported to over 60 countries and widely used in infrastructure projects worldwide.
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The following are the relevant contents of the quality inspection and evaluation standards for cement concrete pavement projects: – Testing method: Take one point every 100 meters of half-width, take one point if less than 100 meters but more than 50 meters, and do not take points if less than 50 meters. The points are determined by lottery, with each 10 meters in the longitudinal direction as a selection section and three selection points in the transverse direction. One point is selected every 1000 meters of half-width, and a separate lottery is conducted when encountering a bridge or culvert. Drill and core, mark the points, perform pressure testing, convert the flexural strength, and calculate the qualified rate. – Evaluation method: If the qualified rate reaches 90% and the flexural strength of all points is higher than 90% of the design value, it will be rated as excellent. The result of one-time coring shall prevail. If the supplementary measurement or rework meets the standard, it shall not be rated as excellent. – Testing method: Based on the concrete core taken for testing the flexural strength, use a caliper to detect four points according to the cross line and take the average value. – Evaluation method: The actual test value is qualified within ±2cm of the design value, and the pass rate can be rated as excellent only when it is above 85%. The one-time test result shall prevail. The supplementary test or rework that meets the standard shall not be rated as excellent. – Testing method: Use a 3-meter ruler to test, and each piece must be tested. Take the maximum value. Flatness exceeding 5mm is considered unqualified, and the pass rate is calculated by piece. – Evaluation method: The pass rate is above 85%, and the proportion of flatness exceeding 8mm does not exceed 5% to be rated as excellent, otherwise it shall not be rated as excellent. – Testing method: Test the center line and two lines 20cm away from the edge line, one section every 10 meters, the plane alignment allowable error is ±10mm, the longitudinal elevation is ±10mm, and the pass rate is calculated by plane alignment and longitudinal elevation. – Evaluation method: The qualified rates of plane line type and longitudinal elevation are both above 85%, and the ratio of plane line type error exceeding 20mm and the ratio of longitudinal elevation exceeding 15mm are not more than 5%, which is rated as excellent. Otherwise, it shall not be rated as excellent. – Pavement color uniformity: Taking the main color of the road surface as the basic color, the color difference area accounts for more than 5%, which shall not be rated as excellent. – Surface damage: According to the three categories of damage area, number of points and number of damage points. If the damage area exceeds 400cm² and the proportion exceeds 2%, the damage area of 4-400cm² exceeds 5 per kilometer, and the damage area of 1-4cm² exceeds 10 per kilometer, this sub-item shall not be rated as excellent. – Whether there is mortar adhesive tape at the joint: The adhesive tape rate exceeds 2%, and this sub-item shall not be rated as excellent. – Seam cutting: The seam cutting qualification rate is more than 90%, measured by six standards: plate length, seam straightness, seam width, butt joint, seam end, and seam depth. – Seam carving: The seam carving qualification rate is more than 90%, calculated according to the concrete plate, and measured by five indicators: seam spacing, straightness, seam washing, butt joint, and seam depth. – Seam filling material uniformity, density, and adhesive tape situation: The qualified rate is more than 95%, the seam width is uniform, and there is no debris at the bottom of the seam material and it is not adhesive tape. When the project length exceeds 2 kilometers, each kilometer is an assessment section, and the last part less than 1 kilometer is assessed in the same way as the previous section. If all five indicators reach excellent grades and the road surface anti-skid property meets the specified requirements, the assessment section is rated as an excellent project, otherwise it cannot be rated as excellent. If the flexural strength is lower than 90% of the design strength, or the thickness of the concrete slab is lower than the design value by 2cm, it is considered an unqualified project. When each assessment section is rated as an excellent project, the project is rated as an excellent project. The above content is for reference only. The actual assessment standards may vary depending on factors such as region and project requirements. They should be implemented in accordance with relevant national standards and industry specifications. Click the below to jump immediately!!! ARMOUR JOINT LASER LEVELING MACHINE LIGHT TOWER POWER TROWEL SLIPFORM MACHINE STEEL FIBER TOPPING SPREADER TRACKED MINI DUMPERLarge-area high-precision concrete floor laser leveling construction method
Large-area high-precision concrete floor laser leveling construction method 1. Laser leveling machine The laser leveler is a high-precision concrete construction equipment that uses laser technology and automated control technology to achieve rapid and accurate leveling of large-area floors. Its main features include 1. High precision: The laser leveling machine adopts a high-precision laser sensing convergence controller, which can monitor and adjust the flatness and height of the concrete surface in real time to ensure construction quality. 2. Automated control: The laser leveling machine can realize continuous automatic leveling operations, improving work efficiency. At the same time, automated control also reduces the impact of human factors on construction quality. 3. Large-area construction: The laser leveling machine has a large construction range and can complete the leveling work of a large area of floors at one time, improving construction efficiency. 4. Vibration function: The laser leveler has a vibration function, which can evenly compact the concrete material to the required thickness, further improving the flatness. 2. Concrete materials When carrying out laser leveling construction of large-area high-precision concrete floors, high-quality concrete materials should be selected to ensure construction quality. The specific requirements are as follows: 1. Strength: Concrete materials should have sufficient strength to meet design requirements. 2. Durability: Concrete materials should have good durability and be able to withstand long-term use and the impact of various environmental factors. 3. Homogeneity: Concrete materials should have good homogeneity to ensure the smoothness of the floor surface after leveling 4. Slump: The slump of concrete materials should be moderate to ensure operability during construction. 3. Construction technology The large-area high-precision concrete floor laser leveling construction process mainly includes the following steps: 1. Preparation: Clean the construction site to ensure there is no debris and dust. Check whether the functions of the laser leveler are normal and prepare the concrete materials required for construction. 2. Spread concrete: Spread the concrete material evenly on the floor to ensure consistent thickness. Paving can be done using tools such as a scraper or trowel. 3. Laser leveling: Start the laser leveling machine and adjust various parameters according to construction requirements, such as flatness, height, etc. The laser leveling machine automatically completes the leveling work of the floor. 4. Compaction and trimming: On the basis of laser leveling, compaction is performed mechanically or manually, and local uneven areas are trimmed. 5. Surface treatment: Perform lightening treatment on the floor surface to improve flatness and smoothness. When finishing, be careful not to over-sand to avoid damaging the surface structure. 6. Curing and maintenance: After completion of construction, the floor should be properly maintained to ensure the hardening and strength growth of the concrete material. At the same time, the floor should be maintained and maintained regularly to ensure its long-term use. 4. Construction personnel Laser leveling construction of large-area high-precision concrete floors requires professional construction personnel to operate laser leveling machines and other related equipment. Construction personnel should meet the following conditions: 1. Professional training: Construction personnel should undergo professional training, be familiar with the operation and maintenance of laser leveling machines, and master the construction technology and technical requirements. 2. Technical level: Construction personnel should have a certain technical level and be able to adjust construction parameters and solve problems encountered during construction according to actual conditions. 3. Responsibility: Construction personnel should have a high sense of responsibility and professional ethics, be able to conscientiously perform construction duties and ensure construction quality 5. Construction Management Laser leveling construction of large-area high-precision concrete floors requires strengthening construction management to ensure that construction quality, progress and safety requirements are met. Specific management measures are as follows: 1. Formulate a construction plan: Based on the actual conditions and requirements of the project, formulate a reasonable construction plan, including construction progress, personnel arrangements, and technical requirements. 2. Construction quality control: Establish a complete construction quality management system and conduct strict quality control and acceptance of each process to ensure that the construction quality meets the design requirements.How to ensure smooth leveling work of the laser leveler
When using a laser leveler for floor construction, everyone will definitely hope that the leveler can run smoothly, because only in this way can the completion of the floor construction be guaranteed. However, it is easier said than done. Many people often cannot master the skills when operating the laser leveler, which will lead to some errors in the construction of the floor and affect the construction effect. So how can we ensure the smooth operation of the laser leveler? First, observe the ground that needs to be leveled, visually measure the high points and locations of the ground, and then find a reference point at the high end of the ground, and level it from high to low in turn. Dig out the soil that is higher than the reference point and fill it in the low-lying area. Visually observe that it is roughly flat. The first thing to level is to make the station flat and stand firmly. Before leveling, first level the position under the track. Let the laser leveler track stand on a flat and solid ground, so that the driver can ensure that there will be no mistakes when visually measuring, and the leveling work will be half successful. References are commonly known as elevations. For novices who are not very confident, the density of elevation points can be increased, such as one every five meters or even three meters. For situations where the original ground is generally higher than the actual elevation, the elevation should be uniformly raised, such as 30 cm or 50 cm. For experienced drivers, you can choose a leveled ground or a ground of different colors as a reference. The choice of reference directly affects the overall flatness of the ground. After determining the reference, the rest is for the laser leveler to dig slowly. If you are not sure, don't dig too much each time. It is better to dig more times than over-digging. For large-area leveling, don't dig too wide each time. Generally, the width of two cars is about the same. If you dig too wide, the error will become larger. If you stare at the ground for a long time, it is easy to deviate. If conditions permit, use a level as much as possible as a reference. In addition, if the laser leveler is standing flat, the bucket is close to the ground and does not understand. Rotating 180 degrees can show the height difference of the nearby high ground. After the fine leveling is completed, the individual high points or low points are leveled according to the specific situation, and finally the entire site is flat. This is the first part of the small knowledge about the smooth operation of the laser leveling machine. We will continue to update it for you later. I hope that the content shared can help you solve the problem better. If you want to know more exciting information about the leveling machine, please feel free to visit our official website for inquiry.
