Device for testing slump of concrete mixture and use method thereof

Abstract

The invention discloses a device for testing slump of a concrete mixture. The device comprises a lower electrical push rod mechanism, a middle electrical push rod mechanism, an upper electrical push rod mechanism, a slump cylinder and a spiral movement mechanism, wherein the lower electrical push rod mechanism comprises a lower base, the lower base is arranged on ground, and a lower electrical push rod is arranged on the lower base; the middle electrical push rod mechanism comprises a middle base, and a middle electrical push rod is arranged on the middle base; an extending rod of the middle electrical push rod is upwards connected with an upper base, and the slump cylinder is connected with the upper base; the upper electrical push rod is positioned just above the slump cylinder, and an extending rod of the upper electrical push rod is vertically and downwards connected with the spiral movement mechanism; the spiral movement mechanism is connected with a vertical vibration bar. The invention also discloses a use method of the device for testing the slump of the concrete mixture. The device has the advantage that the artificial vibration is not needed, so that the error due to theartificial vibration is avoided, and the stability and accuracy in testing are improved.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a device for slump test of concrete mixture. Background technique [0002] The concrete mixture slump test is used to quantitatively measure the fluidity and determine the workability of the concrete mixture. The slump method is suitable for plastic concrete mixtures whose slump value is not less than 10mm. At present, the main instruments and equipment used in the concrete mixture slump test are: 1. The slump cylinder, whose vertical section is in the shape of a truncated cone, is made of thin steel plate or other metal plates. 2. Tamper stick: the end should be rounded, with a diameter of 16mm and a length of 650mm. 3. Auxiliary equipment, such as charging funnel, small shovel, steel ruler, spatula, etc. [0003] During the test, the concrete mixture sample is evenly loaded into the slump cylinder in three layers with a spatula. The volume of the sample loaded in each layer ...

AI Technical Summary

Problems solved by technology

[0004] In the prior art, inserting and tamping is carried out manually, and the force and depth of inserting and tamping by different people are different, and the strength and depth of inserting and tamping by the same person in different times are also different, which makes the existing concrete mixture slump test more effective. Large error, the same batch of samples, different results will be obtained by different people; even if the same person does multiple tests on the same batch of samples, the results of multiple tests will be different

In short, in the existing concrete mixture slump test, the error caused by artificial factors is relatively large, and the stability and accuracy of the test need to be improved.

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