Device and method for monitoring concrete rheological parameters through time

Abstract

The invention provides a device and a method for monitoring concrete rheological parameters through time, belongs to the technical field of concrete and establishes a novel method for detecting concrete rheological parameters through time. A barrel containing a concrete sample is set in a double-lid mode, including an upper barrel lid and a lower barrel lid, the two barrel lids can be freely opened, a lifting support is also arranged and comprises a pair of vertical support bodies arranged in parallel, and the double-lid barrel is suspended between the pair of vertical support bodies through connecting parts and can be turned over by 180 degrees with the straight line where the connecting parts are located as the axis under the action of external force. During testing, a concrete mixture is contained in the upper barrel lid, initial rheological parameter data are detected, then, the upper barrel lid is fastened down, after the concrete mixture is left to stand through time, the double-lid barrel is lifted through the connecting parts to a certain height, the double-lid barrel is turned over by 180 degrees and placed back to the ground, the lower barrel lid is opened, the mixture issecondarily mixed to be uniform, and concrete rheological parameter data through time is detected finally.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a device and method for monitoring rheological parameters of concrete over time. Background technique [0002] At present, the research on the rheological properties of concrete is mainly carried out by ICAR rheometer, among which the static / dynamic yield stress, dynamic plastic viscosity and its time-dependent changes are the key directions in this research field. At this stage, the test method for rheological parameters over time is mainly to place the freshly mixed concrete whose initial rheological parameters have been measured in the test container, and wait for the elapsed time (such as 1h, 2h) to end (the concrete will be delaminated) and it is easy to cause moisture to volatilize), pour the concrete in the test container into the laboratory concrete mixer, perform secondary mixing to make it uniform, then put the secondary mixed concrete into the test container, start th...

AI Technical Summary

Problems solved by technology

Although the above-mentioned testing device and method can detect the rheological parameters of concrete in the initial state and over time, the use of this testing device and method is not only time-consuming and labor-intensive, it is difficult to ensure the accuracy of the concrete mix ratio, but also the operation is complicated, and there is a large Potential safety hazards, especially during the secondary mixing process after the concrete has stood still

Images