Microorganism-induction calcium-carbonate-deposition film laminating testing device and method

Abstract

The invention discloses a microorganism-induction calcium-carbonate-deposition film laminating testing device. The microorganism-induction calcium-carbonate-deposition film laminating testing device comprises a testing cylinder, an air permeating plate fixedly connected with the top of the testing cylinder is arranged at the top of the testing cylinder, and first gauze for covering a sand sample is arranged below the air permeating plate and is in contact with the lower surface of the air permeating plate; a water permeating plate and a piston are arranged in the testing cylinder, the water permeating plate is fixedly connected into the testing cylinder in a position-adjustable mode, second gauze is laid on the water permeating plate, and a sample cavity is formed between the water permeating plate and the air permeating plate; the piston is arranged below the water permeating plate; a handle is arranged on the lower face of the piston; a liquid storage cavity is formed between the piston and the water permeating plate and connected with a liquid storage groove through a hose, and a peristaltic pump is installed on the hose. The invention further discloses a method used for carrying out a microorganism-induction calcium-carbonate-deposition film laminating test through the testing device. By means of the device and the method, cemented substances can be evenly distributed in space, the cementing effect can be improved, the thickness of a film can be conveniently controlled, and the quantity of adopted bacterium liquid and the quantity of adopted cementing solutions can be conveniently mastered.

Description

technical field [0001] The invention relates to a coating test device and a test method, in particular to a coating test device and a test method for microorganism-induced calcium carbonate deposition. Background technique [0002] Concrete and composite geomembrane are commonly used methods for dam seepage prevention. Although the concrete anti-seepage effect is good and has outstanding advantages, if the design is not proper, there will be quality problems such as cracking, falling off the slope, and subsiding. The disadvantage of composite geomembrane is that it is easy to age and has a short service life. In recent years, with the interdisciplinary research of biology, chemistry, mechanics, and materials science, some people have realized that bio-cementation (MICP) technology may be a potential effective method for controlling slope protection and anti-seepage. In principle, bio-cementation can be applied to Protection of any soil slope. Its mechanism of action is: s...

AI Technical Summary

Problems solved by technology

There are some deficiencies in the existing microorganism-induced calcium carbonate film coating laboratory devices, such as: in order to achieve the effect of film coating, indoor tests often use flood irrigation or spraying. Although this method can form calcium carbonate film, the thickness of the film is not easy to control. It is also difficult to control the amount of bacterial solution and cementing solution used, the liquid seeps irregularly under the action of gravity, the spatial distribution of cementing materials is uneven, and the cementing effect is poor

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