Reactive powder concrete delayed coagulation adjustable constant feeding control method and device

Abstract

The invention relates to a reactive powder concrete delayed coagulation adjustable constant feeding control method and a device, which mainly solve the technical problems that the reactive powder concrete discharging speed is quick, a reactive powder concrete hopper port is blocked, and the like. The technical scheme point is that the device comprises a feed trough (110), an anti-condensation stirring device (111), an adjustable speed spiral discharging machine (112) and a directional chute (113); the adjustable speed spiral discharging machine (112) is arranged on the outer side of the feed trough (110); discharge holes formed on the lower end of the feed trough (110) are connected with feeding holes formed on the lower part of the adjustable speed spiral discharging machine (112); the lower part of the anti-condensation stirring device (111) stretches into an inner cavity of the feed trough (110); the adjustable speed spiral discharging machine (112) is connected with the directional chute (113) in a matching way. According to the reactive powder concrete delayed coagulation adjustable constant feeding control device provided by the invention, the anti-condensation stirring device with the structure is adopted to stir materials in a hopper, so that a discharge hole of the hopper can be prevented from being blocked, and constant regulation can be realized. The device is mainly used for reactive powder concrete production construction.

Description

technical field [0001] The invention relates to an adjustable quantitative feeding device for concrete, in particular to a method and device for controlling adjustable quantitative feeding of active powder concrete retardation. Background technique [0002] At present, due to the shortcomings of ordinary concrete such as low tensile strength, poor toughness, and crack development after cracking, the premature deterioration of concrete structures cannot continue to be used, and the durability and service life of important concrete structures have also been greatly reduced. . In order to overcome these shortcomings of concrete, ultra-high toughness cement-based composite (ECC) was proposed to be applied to concrete. Optimized, and add 2%~3.5% volume ratio of fiber. The concrete made of this kind of ultra-high toughness cement-based composite material can significantly improve the tensile strength and shear resistance of concrete. Therefore, the good toughness of this kind of...

AI Technical Summary

Problems solved by technology

[0003] The active powder concrete described in the present invention is a high-strength, high-toughness, high-modulus cement-based composite material, in which steel fibers are mixed into ultra-high-toughness concrete. It has high compressive strength, ultra-high toughness, and durability. It is especially suitable for important structures, such as composite steel box girder structures. However, there are also a series of key construction problems in the actual construction process, such as poor workability, difficulty in pouring and vibration, and difficulty in placing materials. The construction is sensitive to temperature and humidity, and the material contains steel fibers, so it is difficult to mix and pave by conventional methods, especially the rapid setting characteristics of the concrete, and it is difficult to achieve continuous high-quality uniform paving with conventional paving equipment and techniques pound request

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