Small-sized device for simulating fresh mixed concrete dynamic process

Abstract

The invention discloses a small-sized device for simulating a fresh mixed concrete dynamic process. The small-sized device for simulating the fresh mixed concrete dynamic process comprises a steel base plate, two sets of mixing drum support structures, a movable handrail and a mixing drum, wherein the mixing drum support structures comprise left-side small supports, right-side small supports and steel pipes; multiple cross beams are arranged on the right-side small supports along the height direction; the left ends of the steel pipes are hinged with the left-side small supports; the right endsof the steel pipes are connected with one cross beam through pothooks in a hanging way; two dragging wheels are arranged on each steel pipe; the movable handrail is hinged with the steel base plate;a motor is arranged on the movable handrail and drives a mixing drum to rotate through a rotary shaft; and the mixing drum is rotated and supported through the four dragging wheels on the front side and the back side. The small-sized device with the structure for simulating the fresh mixed concrete dynamic process has the advantages that a mixing angle can be adjusted, the mixing speed and the mixing time can be controlled, and the convenience in loading and unloading is realized, and can practically simulate different dynamic processes of newly mixed concrete, so that the convenience and theaccuracy in concrete dynamic performance research are greatly improved.

Description

technical field [0001] The invention relates to the technical field of concrete performance research, in particular to a small device for simulating the dynamic process of fresh concrete. Background technique [0002] Fresh concrete is in a dynamic process from transportation, pumping, pouring to vibration, while the concrete is in a static process after pouring is completed and before it sets and hardens. In the process from the completion of concrete mixing to setting and hardening, poor stability problems such as segregation and bleeding often occur. The concrete in the dynamic process will also suffer from slump loss, which will reduce the working performance of the concrete, making the process of pumping, pouring and vibrating more difficult, and the phenomenon of bleeding and segregation will inevitably aggravate the poor stability of the static process. , thus affecting the development of the mechanical properties of concrete in the static process. At present, resea...

AI Technical Summary

Problems solved by technology

During the process from the completion of concrete mixing to setting and hardening, poor stability problems such as segregation and bleeding often occur

The concrete in the dynamic process will also suffer from slump loss, which will reduce the working performance of the concrete, making the process of pumping, pouring and vibrating more difficult, and the phenomenon of bleeding and segregation will inevitably aggravate the poor stability of the static process. , thus affecting the development of the mechanical properties of concrete in the static process

At present, researchers at home and abroad are mostly focusing on the static performance of freshly mixed concrete directly after mixing. There are few studies on dynamic performance, and few studies consider the influence of different dynamic processes on the static performance of concrete. One of the main problems is Lack of a device that can simulate different dynamic processes of fresh concrete

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