Mortar surface layer and base body tensile bonding intensity detecting clamp and detecting method

Abstract

The invention discloses a mortar surface layer and base body tensile bonding intensity detecting clamp, which comprises a top pull-draw plate, a fastening element and two clamp plates, wherein the upper part of each clamp plate is provided with a groove, the lower part of each clamp plate is provided with a clamping part used for clamping a mortar surface layer, when the detecting clamp is used, the clamping part clamps the mortar surface layer, the top pull-draw plate is clamped in the grooves of the two clamp plates, and the two clamp plates are fixedly connected through the fastening element. The invention also discloses a mortar surface layer and base body tensile bonding intensity detecting method using the detecting clamp. Compared with the prior art, the detecting device and the detecting method can be used for testing the real bonding intensity of the mortar surface layer and the base body and have the advantages that the use is convenient, the experiment efficiency is high, and the environment is protected.

Description

technical field [0001] The invention relates to the field of testing the tensile bonding strength of a mortar surface layer, in particular to a jig and a detection method for detecting the tensile bonding strength of a mortar surface layer and a substrate. Background technique [0002] Mortar is a commonly used building material, which plays the role of bonding, lining and transmitting stress in civil engineering, including masonry mortar, plastering mortar, ground mortar and other types. Through the bonding of mortar and other materials, it becomes a whole, so the bond strength of mortar is very important. [0003] In recent years, with the development of ready-mixed mortar technology, more and more attention has been paid to the bonding performance of mortar. Unlike traditional mortars that only focus on work performance and compressive strength, the "Ready-Mixed Mortar" (JG / T 230-2007) standard also proposes tensile bond strength requirements for plastering mortars and w...

AI Technical Summary

Problems solved by technology

[0013] (1) Adhesives are required to paste the top drawing plate on the mortar layer. The adhesives usually used require the bonding surface to be dry, and water is usually required in the process of cutting the sample, so it takes a long time for the sample to dry before proceeding. Paste, so there is often the problem of weak paste caused by wet bonding surface

[0014] (2) When the adhesive is pasted on the facade and the top is pulled out, the adhesive is prone to flow, and the adhesive will stick to the mortar when it flows to the cutting seam, thus affecting the test results

[0015] (3) The top drawing board is heavy, and it takes a certain time for the adhesive to exert its cohesive force. Therefore, the standard requires that the top pasting board should be fixed with adhesive tape in time after pasting, and the fixing of the adhesive tape is not easy to operate.

[0016] (4) The adhesives and tapes used are disposable materials, which have environmental pollution problems

[0017] (5) After the experiment, the cleaning of the adhesive on the surface of the top drawing board is very time-consuming and laborious

[0018] (6) Due to the difference between the surface layer and the interior of the mortar, and the strength of the mortar surface layer is low, the surface layer of the mortar is often pulled apart during the tensile test, rather than the mortar and the base material, and the mortar surface layer and the base material cannot be obtained. The real bond strength of the test data is relatively large

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