Take precautionary measures and say goodbye to the troubles of operating the laser leveler in rainy season!

The application prospects and development trends of concrete laser leveling machines in the future are very broad. The following are some considerations and application prospects regarding new materials, new processes, new technologies, etc.: 1. Application of new materials: With the continuous development of science and technology, new concrete materials continue to emerge. For example, new concrete materials such as high-strength concrete, self-healing concrete, and conductive concrete will bring new opportunities and challenges to the application of concrete laser levelings. High-strength concrete has the characteristics of high density, high strength and durability, and can be used in high-rise buildings, bridges and other structures, which puts forward higher requirements for the accuracy and stability of laser leveling machines. Self-healing concrete has the ability to repair itself, which can reduce problems such as concrete cracks and damage to a certain extent. It will also have a positive impact on the construction quality and efficiency of laser leveling machines. Conductive concrete is a concrete material that can conduct electricity. Conductive components can be added to the concrete or carbon fiber reinforced plastics can be used to enhance the conductive properties. The intelligent and automated control of laser leveling machines will bring new application prospects. 2. Application of new technologies: With the continuous development of the construction industry, new concrete construction technologies are also emerging. For example, 3D printing concrete technology is a new concrete construction technology that can use three-dimensional model data to print concrete components with various shapes and structures. This technology will bring new challenges and opportunities to the application of laser leveling machines, and can be combined with 3D printing technology to achieve more efficient, precise and personalized construction. In addition, concrete laser leveling machines can also be combined with other new technologies, such as 3D scanning technology, ultrasonic detection technology, etc., to achieve more efficient, precise and reliable construction. 3. Application of new technologies: With the continuous development of science and technology, new laser technologies are also emerging. For example, new lasers such as ultrafast lasers, solid-state lasers, and fiber lasers have the advantages of higher precision, wider wavelength range, and higher pulse energy, and can provide better, more efficient, and more reliable light sources for concrete laser levelings. . In addition, with the continuous development of artificial intelligence, Internet of Things, cloud computing and other technologies, concrete laser levelings can also combine these new technologies to achieve more intelligent, automated and networked control and management. In summary, the future application prospects and development trends of concrete laser leveling machines are very broad. In the future, with the continuous emergence and application of new materials, new processes, and new technologies, concrete laser levelings will become more efficient, precise, reliable, and intelligent, providing more reliable construction guarantees for the development of the construction industry. . At the same time, it is also necessary to strengthen investment in technology research and development and talent training to improve the overall level and competitiveness of domestic concrete laser leveling machines to meet the needs of future development of the construction industry.

    Synchronizing the spreading speed of a concrete topping spreader with the advancement of a laser leveling is one of the most critical logistical challenges in large-area commercial concrete construction. If the spreader falls behind, the slab may cure too much to absorb the dry-shake hardener. If it applies material too early, it risks sinking the hardener below the surface and destroying the tightly controlled Floor Flatness (FF) and Floor Levelness (FL) tolerances achieved by the leveling. Here is the technical framework for matching the operational speeds of these two vital pieces of equipment: The laser leveling dictates the ultimate speed of the pour. High-efficiency telescopic boom laser leveling can level thousands of square meters per day, pulling a wide leveling head (often 3 to 4 meters) continuously. Calculate the leveling's average output in square meters per hour (m²/hr) based on the concrete delivery rate (truck arrivals) and the specific machine's boom extension and retraction cycle time. The topping spreader's theoretical maximum speed must exceed the laser leveling's continuous output. This buffer is required because the spreader operates in intermittent bursts, waiting for specific sections of the slab to reach the correct curing stage. Unlike the laser leveling, which levels wet concrete immediately after placement, the topping spreader cannot follow immediately behind. The Rule of Timing: The spreader must wait until the concrete's initial bleed water has evaporated and the surface can support the weight of the machine and operator (typically when a footprint leaves an indentation of only 3 to 5 mm). Depending on environmental conditions (temperature, humidity, wind) and the concrete mix design, this delay can range from 1 to 3 hours. Therefore, the spreader is not matching the leveling's current position, but rather matching the leveling's output rate from 1 to 3 hours prior. Dry-shake hardeners often require multiple passes. If the project specifies a heavy application (e.g., 5 to 8 kg/m²), it is standard practice to apply 50-60% of the material on the first pass, let it absorb moisture, power-trowel it, and then apply the remaining 40-50% on a second pass. The Math: If a laser leveling levels 2,000 m² in a day, the spreader doesn't just need to cover 2,000 m²; it may need to cover 4,000 m² to accommodate a two-pass application within the same curing window. To match progress, ensure the chosen topping spreader has a variable speed hydrostatic drive and a hopper capacity large enough to minimize reloading downtime. A high-speed topping spreader is useless if it spends half the day driving off the slab to refill its hopper. Strategic Reloading: Position bulk bags of dry-shake hardener at strategic intervals along the edge of the pour or utilize a telehandler to bring material directly to the spreader on the slab. Tire Management: Ensure the spreader is equipped with the correct wide-profile, low-pressure tires. If the machine has to slow down excessively to avoid creating deep ruts that ruin the FL metrics, it will lose pace with the leveling's historical output. By calculating the square-meter-per-hour output of the leveling, factoring in the multi-pass requirements of the hardener, and maintaining a strict staging area for fast material reloading, contractors can ensure their spreading operations perfectly shadow the rapid advancement of modern laser leveling equipment.   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.    

  Laser leveling concrete wear-resistant floor refers to the use of laser leveling machines to perform high-precision and rapid leveling operations on concrete, thereby obtaining a concrete wear-resistant floor that meets high standards in terms of flatness, levelness, density and strength.   The concrete laser leveling machine uses laser as the reference plane, and emits rotating laser through the laser transmitter. The laser signal is captured by the laser receiver on the leveling machine. The received signal is deeply analyzed by the laser measurement and control system, and any deviation will be accurately identified and fed back to the highly sensitive computer control system on the leveling machine. Based on this feedback information, the leveling machine will intelligently adjust the height of the scraper or leveling head to ensure the accuracy of the leveling operation. At the same time, the hydraulically driven vibration motor drives the vibration plate to vibrate the concrete to further compact the ground.   (1) Construction preparation Material preparation: Ensure the quality of concrete materials. Polycondensate high-efficiency water reducer can be added to reduce the risk of cracking. At the same time, prepare the required wear-resistant aggregates, interface agents and other materials. Equipment preparation: Transport and place laser leveling machines, trowels, trimmers, vacuum cleaners and other equipment to the designated location on site, and perform maintenance work to ensure that the equipment is in good standby condition. Base treatment: Mill the base to increase the adhesion between the leveling layer concrete and the base. Clean the surface of the concrete base plate and use a high-pressure water gun to thoroughly rinse the floor surface. Sweep mortar or apply special interface agent as needed. (2) Formwork setting and steel bar laying Formwork setting: Set the formwork according to the design requirements, ensure that the formwork support is on the same horizontal line as the elevation, and use a special formwork frame to set it at an inclined angle to facilitate subsequent construction. Rebar laying: Adding steel bars to concrete can effectively increase the tensile strength of concrete and prevent cracking. The steel mesh should be placed 20mm~30mm away from the floor surface, which not only increases the tensile strength of concrete but also protects the surface from cracks. (3) Concrete paving and laser leveling Concrete paving: The mixed concrete is pumped and spread on the crushed stone base. The paving speed should be appropriate, and manual leveling should be assisted quickly. Ensure that the concrete construction thickness meets the design requirements. Laser leveling: Use a laser transmitter to determine the height of the concrete paving construction, and use a laser leveling machine to perform leveling operations. During the leveling process, one person should be responsible for moving the laser leveling machine, and two people should be responsible for the front-end auxiliary leveling to ensure that the concrete surface remains at the designed height (4) Initial grinding and slurry breaking and throwing wear-resistant aggregates Initial grinding and slurry breaking: When the concrete is initially set, use a single-disc and double-disc trowel to repeatedly rub and level the concrete slurry. The best time is when there are no clear footprints left by people on the concrete. Spreading wear-resistant aggregate: Spread the specified amount of wear-resistant material evenly on the surface of the concrete just after the slurry is broken. Special materials can be considered as specific conditions and spread more than twice. After each spreading, use a trowel to grind and compact the aggregate. Finishing and maintenance Finishing operation: Depending on the degree of hardening of the concrete, perform at least three trowel operations without a disc. The speed and angle of the trowel should be adjusted according to the degree of hardening of the concrete. The corners can be manually scraped. Maintenance: After the construction is completed, it takes more than 28 days to maintain. Sprinkle water for maintenance and lay soil cloth to reduce water evaporation and keep the wear-resistant floor after construction in water. (5) Cutting expansion joints and subsequent treatment Cutting expansion joints: After the concrete has been sprinkled with water for a certain period of time (such as 24 hours), cut the expansion joints according to the design requirements. The setting of expansion joints should take into account the expansion and contraction space of concrete to prevent cracking. Subsequent treatment: Clean and fill the expansion joints after cutting to ensure the beauty and practicality of the floor.   The construction requirements of laser-leveled concrete wear-resistant floor are strict, covering material selection, construction equipment, construction process, construction environment and other aspects. The following is a detailed summary of these requirements: (1) Material requirements: Concrete Strength grade: C25~C30 concrete, 28-day strength not less than 25MPa. Water-cement ratio: not more than 0.5, no water should be added at will during the feeding process. Cement: ordinary silicate cement with a grade not less than 42.5 should be used. Bone material: well-graded, coarse bone material is crushed granite or pebble, with a maximum diameter not more than 25mm; fine bone material is clean river sand, with a fineness modulus of 2.4~2.7. Concrete mix ratio: cement dosage is not less than 350Kg/m³, and the sand ratio is controlled at 35%~40%. Concrete slump: 14±2cm, maximum 16cm. Setting time: The initial setting time is controlled within 3-5 hours. Wear-resistant aggregate: The amount of wear-resistant aggregate is not less than 5kg/㎡, and it is evenly spread in batches to ensure wear resistance and flatness. (2) Construction equipment requirements Concrete laser leveling machine: Ensure that the laser transmitter and receiver work normally, without dead corners, and can monitor and control the ground elevation in real time. Other auxiliary equipment: Including concrete mixing station, pumping equipment, trowel, trimmer, vacuum cleaner, etc., to ensure that the equipment is intact and meets the construction requirements. (3) Construction process requirements Preparation work: Including laying the base, steel mesh, setting the transmission rod, placing the buffer zone, etc., to ensure that the foundation is firm and flat. Concrete paving: Pump concrete to the site and manually assist in leveling to ensure that the concrete is evenly distributed. Laser leveling: Use a laser leveling machine for high-precision leveling to ensure that the ground flatness and levelness meet the requirements. Initial grinding and breaking of slurry: When the concrete is initially set, use a trowel to perform initial grinding and breaking of slurry to remove the concrete slurry. Spreading of wear-resistant aggregate: Spread wear-resistant aggregate evenly in batches and compact and grind with a trowel. Finishing: Perform multiple finishing operations according to the hardening of the concrete to ensure that the floor is smooth and free of defects. Maintenance: After the construction is completed, perform maintenance for more than 28 days to ensure the strength and durability of the concrete. (4) Construction environment requirements Temperature: Avoid construction in extremely high or low temperature environments to prevent the concrete from drying or condensing too quickly. Humidity: Keep the construction environment moderately moist to prevent the concrete from losing water too quickly and causing cracks. Avoid wind and rain: The newly constructed concrete floor should not be exposed to sunlight, wind, rain and other environments that are unfavorable to the health of concrete. (5) Other requirements Cutting expansion joints: Cut expansion joints in time to prevent concrete from cracking due to expansion and contraction. Construction sequence: Ensure that the construction sequence such as concrete feeding speed, leveling speed, polishing time is reasonable to avoid problems such as cold joints. Personnel coordination: Manual and mechanical construction to ensure construction quality and efficiency. Safety requirements: Comply with construction safety regulations to ensure the safety of personnel and equipment.   (1) Protection principles Timeliness: After the construction is completed, protective measures should be taken as soon as possible to prevent the floor from being polluted and damaged. Comprehensiveness: The protective measures should cover the entire floor, leaving no dead corners, to ensure comprehensive protection. Targetedness: Develop targeted protection measures for different construction environments and floor uses. (2) Protection measures Covering protection Maintenance blanket or non-woven fabric covering: Within 5-10 hours after the construction is completed, use a maintenance blanket or special maintenance non-woven fabric to cover the floor and water it to keep it moist to prevent the floor from drying out too quickly and causing cracks. Film covering: In certain circumstances, such as before the steel structure is hoisted, a film can be used to cover the floor to prevent components from falling and damaging the floor. Isolation protection Set up guardrails: Set up guardrails for the completed floor area to prohibit people from entering at will to prevent trampling and pollution. Warning signs: Set up eye-catching warning signs at places such as doors where people frequently enter and exit to remind people to pay attention to protecting the floor. Anti-collision protection Fully spread earth cloth or wooden formwork: During the hoisting operation, the floor is protected from collision by fully spread earth cloth or densely spread wooden formwork. Take anti-fall measures: Small objects such as tools and screws (caps) should be packed in special tool bags to prevent them from falling and damaging the floor. Anti-pollution protection Apply special concrete sealing wax: Apply special concrete sealing wax on the floor surface to form a surface wax coating to prevent pollution and damage. Receiving bucket setting: During the hydraulic test of electromechanical installation, arrange the water inlet and outlet positions to prevent the test water from flowing into the floor. At the same time, place the receiving bucket at the joint position to prevent leakage from polluting the floor. Repair measures Small pit repair: If the floor has small pits and other damage, it can be repaired with a special adhesive SBR. Finished product protection team: Establish a special finished product protection team to be responsible for daily inspection and maintenance of the floor, and promptly discover and deal with damage problems. (3) Protection period and supervision Protection period: According to the specific situation of the floor and construction requirements, determine a reasonable protection period to ensure that the floor is fully protected during the maintenance period. Supervision and inspection: Regularly inspect the floor to ensure that the protection measures are effectively implemented. Violations of protection measures will be corrected and punished in a timely manner.     ①Material preparation: Ensure the quality of concrete materials. The concrete specifications must meet the design requirements, such as C25~C30 concrete, and the 28-day strength is not less than 25MPa. The aggregate grading is good, the maximum particle size of coarse aggregate is not more than 25mm, and the fineness modulus of fine aggregate is moderate. Ordinary silicate cement with a cement grade of not less than 42.5. Equipment inspection: The laser leveling machine and auxiliary equipment (such as mixing station, pumping equipment, trowel, etc.) should be intact and overhauled to ensure normal operation during construction. Check whether the laser transmitter and receiver are working properly, ensure that the laser signal has no dead corners, and can monitor and control the ground elevation in real time. Base treatment: The base should be flat, solid, free of oil and debris to ensure good bonding between the concrete and the base. After the base is treated, it should be inspected and accepted, and the next step can be carried out only after it is qualified. ② Matters needing attention during construction Concrete paving: The minimum hourly feeding speed of concrete should be determined according to the ground thickness and pouring area to avoid cold joint problems. When manually assisted leveling, attention should be paid to the uniform distribution of concrete to avoid large piles falling. Laser leveling: When using the laser leveling machine, the measured height of the vertical pole should be accurate to ensure the leveling accuracy. During the leveling process, the laser leveling machine should be integrated with the paving machine to maintain good rigidity and avoid excessive vibration affecting the construction quality. Operators of laser leveling machines need to undergo professional training and be familiar with the performance and operating procedures of the equipment. Spreading of wear-resistant bone materials: Wear-resistant bone materials should be spread evenly in batches, and after each spreading, they should be compacted and polished with a trowel to ensure wear resistance and flatness. Finishing and maintenance: The finishing operation should be polished multiple times according to the hardening of the concrete to ensure that the floor is smooth and flawless. The floor should be kept moist during maintenance, and a maintenance blanket, non-woven fabric or film should be used to cover and moisturize the floor to prevent the concrete from drying out too quickly and causing cracking. ③ Precautions after construction Cutting and expansion joint treatment: After the construction of the laser-leveled concrete wear-resistant floor is completed, the expansion joint should be cut in time to prevent the concrete from cracking due to expansion and contraction. Professional personnel should be assigned to the cutting operation to ensure that the cutting depth and spacing meet the design requirements. Finished product protection: Guardrails and warning signs should be set up for the completed floor area to prevent people from stepping on and contaminating. Use maintenance blankets, non-woven fabrics or films to cover and protect the floor from external damage. Quality inspection and acceptance: After the construction is completed, the floor should be inspected for quality, including flatness, levelness, density, strength and other indicators. It can only be delivered for use after acceptance to ensure that the floor meets the design requirements and usage functions.