Fully automatic test device for alkali activity by rock column method

Abstract

The invention belongs to the field of building material detection technology and specifically relates to a rock pillar alkali activity automatic testing device. The testing device comprises a control console, a waste liquid collecting box, a thermotank, a water tank and a thermostat. A sample box and a displacement measuring device are arranged inside the thermotank. The control console is connected with the displacement measuring device. The water tank is connected with the sample box which is connected with the waste liquid collecting box. A fixing device for fixing a rock pillar sample is disposed inside the sample box. The displacement measuring device and an automatic control system are combined to be applied in a rock pillar alkali activity test. The displacement measuring device is adopted to automatically collect length change data of the sample, and in cooperation with a temperature control system and a liquid level control system, full automation of the rock pillar alkali activity test is completely realized, work intensity is reduced, and measurement precision and work efficiency are raised. The testing device provided by the invention has a simple structure, and cost is controllable. The testing device is easy for popularization. By the testing device, good economic benefit can be achieved.

Description

technical field [0001] The invention belongs to the technical field of building material detection, and in particular relates to a fully automatic testing device for alkali activity by a rock column method. Background technique [0002] The rock column alkali activity test is currently the main test method for identifying the potential alkali activity of carbonate aggregates, and it is a common test type in the detection of rock aggregates. The existing rock column method alkali activity test is based on the joints of carbonate rocks. The specific measurement process is: take 3 cylindrical rock column samples perpendicular to each other, the size is φ9×35mm, put them into 1mol / L NaOH solution, After soaking at 20°C, the length change of the rock sample is regularly measured by a length measuring instrument. If the test expansion rate is above 0.10% after soaking for 84 days, it is judged that the rock sample has a potential hazard of alkali activity. Since the entire measur...

AI Technical Summary

Problems solved by technology

Since the entire measurement process is manual measurement without a specific measurement device, there are two problems: ① It is impossible to ensure that the two ends are absolutely parallel during the test cutting, and the manual measurement process needs to take out the sample repeatedly, so it is difficult to ensure that the measurement points are consistent each time; ② The data collection process is completely done manually, the test automation is low, and it is difficult to precisely control the test conditions. Not only the error is large, but also the work efficiency is low.

Images