With the continuous improvement of the requirements for the flatness of the concrete floor in modern industrial plants, the traditional floor leveling construction methods can no longer fully meet the requirements of quality, construction period and other aspects. Therefore, the introduction of high-tech laser leveling machines for large-scale flooring Advanced paving, compaction, and leveling are the current inevitable trend. Compared with the traditional construction method of guide rails and leveling beams, the application of laser leveling machines can not only effectively solve the problems of ground hollowing and cracking, but also help reduce costs and speed up construction progress. The following laser leveling machine manufacturers briefly discuss the large-area floor construction technology.
In order to better complete the various constructions of the large-area floor, it is necessary to organize and manage the construction site of the large-area floor in all aspects, and fundamentally avoid the construction of misoperation when using the laser leveling machine construction technology Condition. In the process of sorting out and managing large-area floor construction sites, laser leveling machine manufacturers recommend the following aspects:
1. Clear the obstacles on the construction site. During the actual construction process, it is necessary to remove all obstacles in the construction area, such as ditches, garbage, communication lines, etc., and relocate high-voltage lines or communication lines after obtaining permission from relevant departments. When moving or unremovable obstacles, timely adjustment or avoidance is required.
2. Measure for the construction site. Before carrying out large-scale floor construction, it is necessary to measure and detect each control point according to the requirements of the construction and the owner. After determining the coordinate points and elevation points, it is necessary to measure the horizontal points and plane control points to ensure the safety of the construction. All parameters can fully meet the construction design.
When the formwork needs to be fixed by using steel bars after being fixed, cement mortar pads are installed to ensure that the formwork does not shift during the concrete pouring process and the thickness of the protective layer meets the requirements. Before pouring large-scale floor concrete, the concrete surfaces on both sides should be chiseled, the steel bars should be derusted and their positions should be corrected, and the garbage should be cleaned up. Normally, the floor and pouring belt adopt an independent support system that is set up separately from the bottom formwork, which can effectively control the floor compared with the integral formwork, because the deflection caused by formwork removal increases, and because there is no need for secondary formwork, It reduces the use of labor and has good economic benefits. The pouring time of the telescopic post-casting belt is generally carried out 60 days after the concrete pouring of the adjacent parts is completed, and the watering and wetting treatment should be done 24 hours in advance before construction. The concrete used is a micro-expansion concrete with a strength level higher than that of the corresponding structural parts to prevent cracks. During the construction process, laser leveling machine manufacturers recommend the use of C35 concrete mixed with 12 percent SY-G. After the concrete pouring is completed, the construction site should be covered and moisturized for maintenance within 12 hours, and the curing time should not be less than 28 days. Watering nets are strictly prohibited when the average temperature of the day is lower than 5 degree .
When carrying out large-scale floor concrete paving work, many factors such as formwork position and support status should be strictly checked. When the concrete is dumped after the inspection, it should be carried out according to the guidance of professionals from the laser leveling machine manufacturer to ensure that the concrete is dumped to the specified position. If there is any failure during the paving of a large area of the floor, the construction needs to be suspended for more than 1 hour immediately. Discard the mixture that cannot be shaken. During the process of vibrating the mixture with the plug-in vibrator, it is necessary to lift the slurry and use a laser leveling machine to level it. Two vibrating rods should be installed on the vibrator in the large-area floor, so that the ground A horizontal vibrating group is formed above, and continuous vibrating work is carried out along the cross-section. When performing vibration work, it is necessary to pay attention to the position of the bottom of the floor on the ground. There must be no under-vibration or leakage problems at the positions of the interior and corners. The vibration time is about 30s or more, and the vibration is real Relevant personnel should refill materials nearby, and strictly supervise and manage the vibrating formwork dowel rods and effects. When deformation, slurry leakage, displacement, and looseness occur, they should be corrected immediately.
Above, the large-scale floor leveling construction technology has been discussed in detail from the three aspects of construction site management, floor treatment, and paving. In order to effectively improve the quality and efficiency of floor construction, laser leveling machine manufacturers suggest that in the actual construction process, operators need to fully grasp the characteristics of the leveling machine and combine it with construction, so as to achieve a more ideal construction standards.