Concrete laser levelling machine VS manual construction, where is the difference?

Driving mechanical troweling construction is a technology widely used in concrete surface treatment. It replaces traditional manual troweling with mechanized operation, improving construction efficiency and surface quality. However, this construction method has a direct impact on the strength of concrete. The following is a detailed analysis of the impact of driving mechanical troweling construction on concrete strength. Introduction   As the most commonly used structural material in the construction industry, the strength of concrete is a key factor in ensuring structural safety and durability. Driving mechanical troweling construction treats the concrete surface by mechanized means to achieve the required flatness and density. This article will explore the impact of this construction method on concrete strength. 1. Overview of driving mechanical troweling technology   Driving mechanical troweling technology is a concrete surface treatment method with a high degree of automation. It uses mechanical troweling equipment to smooth and compact the concrete surface to improve the flatness and density of the concrete surface. 2. Definition and importance of concrete strength   Concrete strength generally refers to the ability of concrete to resist pressure, tension and other external forces. The strength of concrete directly affects the bearing capacity and durability of the structure. 3. The positive impact of driving mechanical troweling on concrete strength   – **Improving density**: Mechanical troweling can compact concrete more effectively and reduce internal pores, thereby improving the density and strength of concrete. – **Improving uniformity**: Mechanical troweling can distribute aggregates in concrete more evenly and avoid uneven strength caused by aggregate concentration. – **Reducing surface defects**: Mechanical troweling can reduce cracks and holes on the surface of concrete, which may become weaknesses that reduce strength. 4. Potential negative impact of driving mechanical troweling on concrete strength   – **Over-troweling**: If the mechanical troweling process is not properly operated, the concrete surface may be over-smoothed, thereby weakening the strength of the concrete surface. – **Aggregate sinking**: Mechanical troweling may cause fine aggregates to sink and coarse aggregates to float. This uneven distribution of aggregates may affect the overall strength of concrete. – **Moisture migration**: During the troweling process, the moisture on the concrete surface may be excessively squeezed out, causing the concrete surface to dry, affecting the hydration reaction of cement, and thus affecting the strength. 5. Control of concrete strength during construction   – **Select appropriate troweling time**: Concrete should be troweled after initial setting to avoid over-smoothing and aggregate sinking. – **Control the number and intensity of troweling**: Reasonably control the number and intensity of troweling to avoid negative impact on concrete strength. – **Maintain appropriate concrete workability**: Ensure that concrete has good workability to facilitate mechanical troweling and reduce the impact on strength. 6. Impact of construction environment on concrete strength   – **Temperature and humidity**: The temperature and humidity of the construction environment will affect the coagulation and hardening process of concrete, thereby affecting the strength. – **Construction season**: Climate changes in different seasons have a significant impact on the strength of concrete, and corresponding construction measures need to be taken. 7. Professional skills of construction personnel   – **Operation skills**: Construction personnel need to have professional operation skills to ensure the quality and efficiency of mechanical troweling construction. – **Experience judgment**: Experienced construction personnel can make correct construction decisions based on the state of concrete and the construction environment. 8. Conclusion   Drive-type mechanical troweling construction has a direct impact on concrete strength. Through reasonable construction methods and strict construction control, the positive impact of mechanical troweling can be maximized while avoiding potential negative effects. The professional skills and experience of construction personnel are essential to ensure the strength of concrete. With the development of technology and the improvement of construction methods, driving mechanical troweling construction will further improve the quality and performance of concrete structures.  

Recently lying storms throughout our country, the rainy season comes laser screed  machine maintenance has become very important, the rainy season concrete ground  outside can not be constructed, in the concrete laser flatflating machine idle, should be  placed in a dry place, to avoid the air humidity and affect the engine start. In addition, the construction environment of the concrete laser flattening machine is not  very good, after the rain will have a lot of potholes and puddles of mud accumulation, the first thing to pay attention to after the rainy season is the cleaning of the laser flatflater, of course, not only the rainy season, usually after the use of laser flatflating machine should  also be cleaned in time, Failure to do so can lead to the laser leveling machine walking track  under the gap in the accumulation of sludge, is a place where moisture is hidden, but also  most likely to cause the track rust. The acidic composition in the rainhast water has a strong corrosive effect on the paint surface of the laser screed machine, and over time it will cause damage to the paint surface of the laser flattener, so in the season with more rain, it is best to give the laser leveling machine a paint finish. The simplest is waxing, the longer and more effective is to seal the glaze. No matter what method, All to the laser leveling machine put on a protective coat, to prevent the paint surface fade aging. The chassis of the laser screed is the closest to the ground, especially affected by road conditions, this part is most prone to rust spots, the wheel shell may even loosen perforation. Therefore, we must pay attention to the laser leveling machine chassis clean rust treatment. Rainy days, such as encountering indoor construction, laser screed machine engine is not easy to start the problem, sometimes even if forced to start up, but also has air power. The most likely is a leakage due to moisture in the ignition system, which loses its normal ignition function. Once found that because of the moisture of the ignition system caused bad ignition, engine performance, it is best to use dry paper towels or dry cloth to the inside and outside of the cable and wire drying, and then use a special desiccant spray can to spray the dryer in the split disk cap, battery connector, line connector, high-voltage line, etc. , and so on after a while can start the engine

  – Applicable situations: Applicable to situations where there are small bulges or unevenness in the concrete pavement, the height of the bulge is generally within a few millimeters, and the unevenness is relatively mild. – Operation method: Use a pavement grinder to grind the uneven parts, and grind off the raised parts to make the pavement flat. When grinding, pay attention to controlling the depth and range of grinding to avoid excessive grinding causing the pavement to become thinner or new unevenness. After grinding, clean up the debris and dust on the pavement in time.   – Applicable situations: Applicable to situations where there are shallow potholes or local depressions on the pavement, the depth is usually less than 2-3 cm, and the area is not large. – Operation method: First clean the potholes and remove debris, dust and loose concrete fragments. Then use cement mortar or special pavement repair materials with the same or higher strength grade as the pavement concrete to fill them. When filling, the material should be fully compacted and smoothed to ensure that the surface after filling is consistent with the surrounding road surface. In order to ensure the adhesion between the repair material and the original road surface, a layer of interface agent can be applied to the surface of the pothole before filling.   – Applicable conditions: When the road surface unevenness is more obvious, the depth of the potholes or depressions is about 3-5 cm, and the area is large, the thin layer repair method can be used. – Operation method: First, cut the area to be repaired into a regular shape. The depth is determined according to the degree of unevenness, generally about 3-5 cm. Then clean up the loose concrete in the cut area and treat the base appropriately, such as compaction, cleaning, etc. Then lay a thin layer of repair material that matches the performance of the original road concrete, such as polymer-modified concrete or high-performance repair mortar. When laying, use tools such as flat vibrators or trowels to vibrate and compact the materials, smooth them, and ensure that the repair layer is tightly combined with the original road surface and the surface flatness meets the requirements.   – Applicable situations: Applicable to large areas with poor road flatness, serious unevenness, multiple potholes of varying depths, wavy unevenness, etc. – Operation method: Use a road milling machine to mill off the uneven surface of the road. The milling depth is generally about 5-10 cm, and the specific depth is determined according to the actual situation of the road surface. After milling, clean up the debris and dust, inspect and treat the base layer, and repair and compact any damaged or loose parts. Then re-pave the concrete road surface according to the design requirements, including paving, vibration, troweling and other processes to ensure that the flatness of the newly laid concrete road surface meets the standard. After the concrete is poured, it should be maintained in time to prevent quality problems such as cracks.   – Applicable situations: When the concrete pavement is severely broken, sunken or uneven over a large area, and the base is also severely damaged, partial plate replacement is required. – Operation method: First determine the range of the plates that need to be replaced, use a cutting machine to cut the plates neatly around, then remove the broken concrete plates, and clean up the debris and loose materials on the base. Reinforce the base, such as using compaction, replacement and other methods to ensure that the bearing capacity and stability of the base meet the requirements. Then re-pour the concrete plates according to the design requirements, including installing the formwork, tying steel bars (if required), pouring concrete, vibrating and compacting, and smoothing. After pouring, strict maintenance must be carried out, and traffic will be opened after the concrete reaches the design strength.   – Applicable situations: If the overall flatness of the concrete pavement is extremely poor, and there are large-scale defects such as severe cracks, potholes, and subsidence, and after evaluation, it is believed that the repair can no longer meet the use requirements, or the repair cost is too high, overall renovation can be considered. – Operation method: First, the original pavement should be demolished, the concrete pavement should be crushed and transported away, and the base layer should be thoroughly inspected and treated. If there are weak soil layers or poor geological conditions, corresponding treatments should be carried out, such as replacement and reinforcement. Then, according to the design plan, the pavement structure should be re-laid, including the base layer, subbase layer, surface layer, etc., and the construction should be carried out in accordance with the construction specifications, and the thickness, compaction and flatness of each layer should be strictly controlled. During the construction process, quality inspection and control should be strengthened to ensure that the performance indicators of the new pavement meet the design requirements. The pavement after overall renovation needs to be maintained and debugged for a period of time. After all indicators are stable, it can be officially opened to traffic.     ARMOUR JOINT CONCRETE LASER LEVELING MACHINE LIGHT TOWER STEEL FIBER TRACKED MINI DUMPER POWER TROWEL