Coarse aggregate morphology quality detection system and method

Abstract

The invention discloses a coarse aggregate morphology quality detection system and method. The system comprises a vibration dispersion module, a transparent belt, a backlight source, a laser scanningmodule, an image acquisition module and an image analysis module; the vibration dispersion module is arranged above one end of the transparent belt so as to dispersedly convey coarse aggregates to thetransparent belt; the backlight source is arranged below the transparent belt; the laser scanning module is arranged above the transparent belt, and an irradiation area is located in the middle of the backlight source; the image acquisition module is vertically arranged right above the transparent belt where the backlight source is located so as to carry out image acquisition on detected aggregates; and the image analysis module is connected with the image acquisition module to carry out geometric feature extraction on acquired images, obtains the required particle size and shape parameters and volume grading, and outputs a final particle size distribution result. According to the detection system and method, the accuracy and timeliness of coarse aggregate detection can be improved.

Description

technical field [0001] The invention relates to the technical field of detection and the field of engineering machinery, in particular to a system for detecting the form quality of coarse aggregate. Background technique [0002] As the main material of asphalt mixture and cement concrete, aggregate accounts for more than 3 / 4 of the volume and quality of concrete, and plays the role of skeleton and filling in concrete. Its characteristics have an important influence on the workability of concrete mixtures, mainly reflected in three aspects: flow energy, cohesion and water retention. A good aggregate particle size distribution reduces the concrete bulk porosity, makes the concrete work better, has good stability and durability, and reduces the amount of cement slurry and reduces the cost of concrete. The aggregate gradation is monitored before concrete mixing to ensure that the particle gradation of the aggregate meets the national or industry standards in order to obtain hig...

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Problems solved by technology

[0004] The traditional detection method of aggregate grading is manual off-line sieving detection, which is time-consuming and energy-consuming, and cannot timely and truly reflect the particle size detection data of aggregates under actual operating conditions; and cannot detect particle shape. , Needle flake aggregate, on the one hand, it will affect the particle size detection accuracy, on the other hand, it will affect the strength and quality of concrete mixture

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