Traditional plaster mortar and construction technology of the wall often appear empty drum cracking and other quality problems, the use of prepared mortar and spraying construction technology can solve the problem of empty drum cracking, but the subsequent treatment of spraying construction is difficult, low efficiency, seriously affected the promotion and application of prepared mortar spraying technology. In order to solve the above problems, a kind of vibrating plastering tool was developed and combined with the construction of mortar spraying machine, which greatly improved the tensile bond strength and construction efficiency of plastering mortar. By comparing the construction with the manual construction, the comprehensive cost of plaster-mortar can be saved by one third. It is suggested to advocate the advanced construction technology of spraying vibrating and wiping, change the traditional construction method, and make the promotion and application of ready-mixed mortar enter the fast lane.
Rapid mortar spraying machine construction:
Vibrate the mortar sprayed on the wall by the vibratory plate of the vibratory flattening tool, so that the mortar enters the vibratory motion, and the particles of the mortar obtain the pulse. Therefore, they vibrate at the unstable equilibrium position. At this point, the mortar has the property of "thick liquid". Under the influence of the pulse, the particles of the mortar will vibrate continuously around the middle of an unstable equilibrium. As a result of the displacement of adjacent particles, a hole will be formed and continue to vibrate at the new unstable equilibrium position. Thus, in addition to the downward vertical displacement of the particles moving in succession to each other, the mortar particles may also have other displacements, such as upward, toward and away from the vibrator. Under the action of vibration force, the air in the mortar will become the shape of bubbles and precipitate from it; The mortar may have any shape and cause pressure on the side elevation of the plate, i.e. the side pressure, which is distributed in a triangular state. When mortar is consolidated with a vibrator, its particles come close to each other and expel air, which bubbles up to the surface. Only bubbles of a certain diameter can float on the surface of the mortar. The buoyancy of bubbles with diameters less than a certain limit is not enough to overcome the internal friction force, which ensures that a more compact mortar can be obtained in the case of vibrating mortar. Thus, the tensile bond strength of mortar is increased.
Conclusion of rapid mortar spraying machine and traditional construction:
With the newly developed vibration plastering tool, combined with the construction of premix mortar spraying machine, the bonding strength and construction efficiency of plastering mortar are greatly improved, and the comprehensive cost of plastering mortar can be saved by one third. From contractor's point of view, the traditional slurry transportation, mixing, construction productivity per worker about 35 m2 production quota, and the use of ready-mixed mortar and its corresponding supporting vibration rendering tools, ranging from transportation, stir to construction productivity can be improved to every workers more than 90 m2 production quota, obviously improve the working efficiency, cost reduction, to reduce the total cost of construction, speed up the construction progress has played a large role. It can be seen from this that the use of advanced spraying vibration wipe construction technology, change the traditional construction method is the best choice for the construction unit. Spraying construction technology is in the initial stage, and the wall decoration requirements are higher and higher. But the quality of architectural design, construction, building materials and other aspects can not cooperate well with each other, often become the main reason for the poor quality of wall plastering. In many years of engineering construction practice, after the observation and reason analysis of the cracks and empty drums in the wall plastering project, we summarized the spraying vibration and wiping construction technology, using spraying vibration and wiping construction technology than other mechanized construction comprehensive cost reduction of about 30%.
