Testing apparatus for fully automatically controlling aggregate solidity and testing method

Abstract

The invention relates to the technical field of testing apparatuses and in particular relates to a testing apparatus for fully automatically controlling aggregate solidity and a testing method. The testing apparatus comprises a testing worktable surface, a control system, a manipulator operating device, a drying device, a thermostatic water bath and a soaking device, wherein the drying device andthe thermostatic water bath are arranged at a center line position of the testing worktable surface; the control system is respectively connected with the drying device, the manipulator operating device and the thermostatic water bath by virtue of power lines and mainly comprises an operation interface, an electrical control circuit, a temperature control instrument and a control cabinet; the manipulator operating device is arranged on the rear of the testing worktable surface and mainly comprises a bottom sliding rail, a mechanical arm and a portal sliding table; and the soaking device is arranged just above the thermostatic water bath. The testing apparatus has the beneficial effects that full automatic control of the test process is realized, the test process is continuous and uninterrupted, the integrity is high, the personnel operation is simple and rapid, the ambient temperature needed by the test can be accurately controlled, the personal error is reduced, and the test accuracyis improved.

Description

technical field [0001] The invention relates to the technical field of test devices, in particular to a fully automatic control aggregate firmness test device and a test method. Background technique [0002] Aggregate solidity test is to determine whether crushed stone, gravel (coarse aggregate) or sand sample (fine aggregate) undergoes repeated immersion and drying cycles in saturated sodium sulfate solution, and withstands the crystallization pressure of sodium sulfate without significant damage or strength. The performance reduction test is the most commonly used test method to evaluate the solid performance (also known as stability) of aggregates. However, at present, this kind of test operation is complicated, and there are mainly the following problems: [0003] (1) It takes about 56 hours in the cycle of immersion and drying of aggregates of different particle sizes. The test process is complicated, and the test personnel cannot rest during the period, which is time-...

AI Technical Summary

Problems solved by technology

However, at present, this kind of test operation is complicated, and there are mainly the following problems:

[0003] (1) It takes about 56 hours in the cycle of immersion and drying of aggregates of different particle sizes. The test process is complicated, and the test personnel cannot rest during the period, which is time-consuming, laborious and inefficient;

[0004] (2) Aggregates of different particle sizes must be soaked in sodium sulfate solution at 20°C to 25°C for 20 hours. Due to the influence of ambient temperature, especially in winter, the temperature should not be accurately controlled;

[0005] (3) The instrument cannot realize automatic control, the test is easily interrupted, the degree of automation is low, the integrity is not strong, and the experimental data cannot be accurately obtained;

[0006] (4) The human operation error is large, and the test time of different particle sizes cannot be guaranteed to be completely consistent, which increases the test error

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