A kind of non-destructive detector for the strength of lightweight aggregate concrete

Abstract

The invention discloses a non-destructive detector for the strength of lightweight aggregate concrete, which belongs to the field of concrete quality detection, and comprises a shell, a detachable upper end plug is installed on the top of the shell, and a lower end plug is installed on the bottom of the shell. A fixed plate is installed on the outer wall of the top of the shell, and a central guide rod is installed on the bottom of the fixed plate. As for the protrusion, the outer wall of the housing is provided with a movable opening a corresponding to the protrusion. In the present invention, a T-shaped limit block and a limit spring a are installed on the outer wall of the housing. When the pointer block reaches a certain position, the T-shaped limit block can be pressed into the housing by pressing the T-shaped limit block. Inside the casing, the pointer block is limited to prevent the position of the pointer block from occurring when moving to another place to observe the position of the pointer block, so as to prevent detection errors.

Description

technical field [0001] The invention relates to the field of concrete quality detection, in particular to a non-destructive detector for the strength of lightweight aggregate concrete. Background technique [0002] As we all know, the strength and quality of concrete is related to the overall safety and service life of the building structure. Therefore, it is particularly important to do a good job in the quality control, quality supervision and quality inspection of concrete during the entire life cycle of the building. The rebound method is widely used in construction projects because of its simple operation, convenient use, economy, rapidity and considerable detection accuracy. [0003] In recent years, lightweight aggregate concrete has been widely used in various fields of construction engineering because of its light weight, high strength, good thermal insulation effect, excellent fire resistance and durability. At present, lightweight aggregate concrete has become an...

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Problems solved by technology

(5) When the radius of the spherical surface at the top of the bullet is small, the energy absorbed by the concrete surface is large, the rebound value is low, and the detection accuracy is reduced. At the same time, it is easy to cause the deviation of the test angle when the hammer is used. When the concrete surface absorbs less energy

[0008] However, this strength non-destructive detector has a complex structure. When the position of the spring hammer needs to be reset, the buffer compression spring needs to be squeezed, and the spring spring must be stretched at the same time. It is laborious to reset the spring hammer. At the same time, the There is no device for temporarily fixing the pointer block on the non-destructive detector. When it is necessary to move to another place to observe the position of the pointer block, the position of the pointer block cannot be temporarily fixed, which will easily lead to errors in the data detected by the detector.

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