Automatic capillary water absorption measuring device and method for building porous material

Abstract

The invention discloses an automatic capillary water absorption measuring device and method for a building porous material. The device comprises a windproof glass hood, an electronic balance, a glassbearing table, a metal hanging rack, a glass water channel, a high level water tank and an electronic computer, wherein a netty metal washer is suspended right below the electronic balance through a metal hanging rack, the electronic balance is arranged on the glass bearing table, and the glass bearing table is connected to the glass water channel; the windproof hood covers the electronic balance;the electronic balance is connected to the electronic computer through a balance data line; the high level water tank is supported and fixed through a supporting rack, the bottom of the high level water tank is higher than the highest position of the liquid level of the glass water channel, one end of a transfusion pipe is connected to a bottom opening of the high level water tank while the otherend is connected to the glass water tank through an opening in the lateral side, and a flow controller is arranged on the transfusion pipe. By making full use of the data output function of the electronic balance and the automatic recording function of the electronic computer, the weight data of a test-piece can be read continuously, so that the influence caused by human factors is avoided.

Description

technical field [0001] The invention relates to a water absorption measuring device, in particular to an automatic measuring device for capillary water absorption of building porous materials. The device can automatically measure the capillary water absorption coefficient of building porous materials and belongs to the field of building technology science. Background technique [0002] The capillary water absorption coefficient of building porous materials is one of the important wet physical properties of building materials, and it is one of the indispensable parameters in the process of analyzing the transfer and storage of liquid water in porous materials. The structure of the traditional measuring device is as follows: image 3 As shown, it includes a glass cover 01, a waterproof rubber strip 02, an open glass tank 05 and a point support 06; a point support 06 is provided in the open glass tank 05, and the test piece 03 is arranged on the point support 06. The upper surfac...

AI Technical Summary

Problems solved by technology

The water absorption process of some building porous materials is relatively fast, which may only take a few minutes, and the water absorption process of some porous materials is relatively long, and some materials even last for more than ten days. The choice of weighing time node has a great influence on the error of the experiment.

[0009] 2) The wiping strength problem when taking the test piece out of the water during operation

Use a soft saturated wet cloth to wipe off the excess water. The main purpose is to prevent the error caused by the water floating on the surface of the test piece when the test piece is picked up. However, the human error caused by this operation method has a great influence. Light weight will cause the weighing result to be too large, too heavy will cause the weighing result to be too small, and the result is difficult to grasp

[0010] 3) Human problems generated during the experiment

For porous materials with fast water absorption speed, the weighing interval must be short to accurately describe the first stage of water absorption of the material, which requires high professional operation of personnel; for materials with slow water absorption time, regular weighing is required , resulting in a waste of manpower

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