A method for artificially preparing flocculated clay in coastal areas

Abstract

The invention discloses a method for manually preparing flocculent clay in a coastal region. The surface charge of kaolin particles is changed by chemical reagents, and the flocculent clay is preparedby the aid of a step-by-step loading prepressing technology. The method includes the steps: preparing dispersing agent solution, adding kaolin powder and mixing the dispersing agent solution and thekaolin powder to form slurry; adding flocculants and mixing the materials; applying load step by step to form a sample; performing step-by-step unloading according to the reverse order of load application; cutting and finishing the sample to finally obtain a flocculent clay sample. Compared with an existing method, the method has the advantages that a more loose and reliable flocculent structure can be acquired, and the flocculent clay with high water content in the coastal region can be more effectively simulated.

Description

technical field [0001] The invention relates to a method for preparing flocculated clay in coastal areas by using kaolin materials, in particular to a method for artificially preparing flocculated clay by using chemical reagents to change the arrangement of kaolin particles. Background technique [0002] In the natural state, coastal clay often has a flocculation structure. For example, the microstructure of clay in Zhanjiang, a typical offshore area, is a directional and disordered open flocculation structure with colloidal bonding characteristics; the fourth layer of silty soft clay in Shanghai There are mainly flocculation structure and honeycomb-flocculation structure, and their structural units are mostly flakes, which are easy to form an overhead structure with high void ratio in muddy soil; the soft soil in Tianjin Binhai New Area mainly has a flocculation-like aggregate structure. The flocculation structure of coastal clay is easily disturbed during the sampling proc...

AI Technical Summary

Problems solved by technology

[0004] The technical problems to be solved in the present invention mainly include the following points: 1) provide a simple, reliable, effective, and excellent performance indoor method for artificially preparing flocculated clay, effectively solving the problems of structural disturbance and high-cost input for on-site sampling; 2) ) can prepare high-quality samples with good repeatability and uniformity in batches, and the preparation method should be able to achieve a clay structure with a high degree of flocculation; 3) this method can understand the relationship between the preparation process parameters and the sample performance indicators Physical and Mechanical Properties of Artificial Coastal Clay

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