Fresh mixed high-property concrete rheological property control method and device

Abstract

The invention belongs to the technical field of concrete, particularly relates to a fresh mixed high-property concrete rheological property control method and device and aims at providing a novel stirring method and device suitable for high-property concrete. According to the device, a torque sensor and a speed adjuster are arranged on a stirrer, a power meter is arranged on a circuit of the stirrer, the power meter can transmit real-time motor power to a controller during stirring, the stirring speed of the stirrer can be controlled in three stages, the torque sensor is used for automaticallydetecting high-property concrete torque change in the stirring process, when the torque change is higher than the upper limit, and is maintained for a quite long time, the rotating speed is automatically lowered, a motor overload alarm is given out, when the torque change is lower than the lower limit, the rotating speed is automatically lowered, a producer is promoted to observe the concrete state, and quality problems of concrete disintegration, bleeding and the like can be solved.

Description

technical field [0001] The invention belongs to the technical field of concrete, in particular to a method and device for controlling the rheological properties of freshly mixed high-performance concrete. Background technique [0002] High-performance concrete represents the advanced development direction of concrete technology. With the rapid development of urbanization, the scale of application of high-performance concrete in my country continues to expand. Various types of high-performance concrete (such as mass concrete, self-compacting concrete, pump Concrete, ultra-high performance concrete, etc.) are continuously applied in engineering practice. [0003] Ordinary concrete water glue is relatively fixed, and the water glue is relatively high. The gelling material and water reducer added are relatively simple, and the gelling material is quickly dispersed evenly after entering the water. Therefore, during the process of mixing concrete with a concrete mixer, the rheolo...

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Problems solved by technology

[0004] The speed of the existing concrete mixer is basically constant. For example, the basic speed of the twin-shaft mixer is constant at 25 rpm. This constant mixing mode can no longer meet the production needs of new high-performance concrete. If the motor power is too high, it will easily cause failures and affect production and construction; when the concrete is too thin, maintaining the original speed of mixing will make the concrete thinner and thinner, which not only wastes energy consumption, but also affects the stability of freshly mixed concrete

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