A kind of testing device and testing method of mortar constructability

Abstract

The invention provides a mortar constructability testing method which comprises the following steps: arranging mortar to be tested on a base material as a test piece; arranging a trowel on the test piece at a preset height and inclination angle; pulling the trowel to move on the test piece, and recording a tension-displacement curve of the trowel; and calculating the integral area of the tension-displacement curve to obtain the mortar constructability index to be measured. According to the invention, firstly, the moving speed of the trowel is controlled in a digital manner, and a tension-displacement curve in the test process is recorded, so that the construction performance data of mortar can be presented integrally, objectively and comprehensively; secondly, a result obtained after integral or average value operation is carried out by adopting integral test data is used as an evaluation index of the mortar construction performance, so that the integral performance of the mortar construction performance can be effectively reflected; and thirdly, through data processing, external interference generated by friction force and the like of the equipment can be effectively eliminated, and test results of different equipment are comparable.

Description

technical field [0001] The invention belongs to the technical field of building mortar tests, and in particular relates to a mortar constructability test device and a test method. Background technique [0002] The amount of building mortar is large and wide, and its constructability has a significant impact on construction speed, labor intensity and project quality; mortar varieties that require high constructability mainly include: ordinary plastering mortar, thin-layer plastering mortar, and external thermal insulation system Plastering mortar, tile bonding mortar, plastering mortar for air-entrained concrete, interface mortar, putty, plastering gypsum, facing mortar and ground leveling mortar, etc. Most of these mortars need to be smoothed manually with a trowel. [0003] In the prior art, the workability of mortar is mainly represented by consistency, fluidity (expansion) and loss rate. However, they can only indirectly represent the workability of mortar, and cannot tr...

AI Technical Summary

Problems solved by technology

However, this scheme has the following problems: First, the friction and other resistance interferences of different test devices (especially sliding components) are different, resulting in incomparable measurement results between different devices; second, the sliding plate (equivalent to a trowel) When the mortar surface is moving, on the one hand, due to the uneven texture of the mortar, its spring tension is always in a dynamic state of change; It shows a gradually increasing trend, which leads to the inability to make accurate readings with the spring tension meter, and the error of the measurement results is large

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