On-site quality control method for sludge solidification and filler utilization, terminal and medium

Abstract

The invention belongs to the technical field of sludge treatment in civil engineering, and discloses an on-site quality control method for sludge solidification and filler utilization, a terminal and a medium. The method comprises the steps of collecting a representative mud sample from an excavation area; testing the basic soil property and components of the representative mud sample; testing the fluidity indexes of different sludge samples under different moisture content conditions, and determining the quantitative relationship between the fluidity index of each sludge sample and the moisture content; determining the unconfined compressive strength of a common curing agent, and optimizing a curing agent formula according to the strength; based on a curing agent formula, carrying out an indoor test to obtain a relationship among the strength, the curing agent content and the water content after sludge curing treatment; and determining the mixing amount of a curing agent based on the relationship, and adding the curing agent into the sludge for curing treatment. By performing quality control in advance, the strength of cured sludge can be guaranteed, the method is simple and quick, and the effect of quality control is achieved.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment in civil engineering, and relates to a sludge solidification treatment technology, in particular to an on-site quality control method, a terminal and a medium for sludge solidification and filler utilization. Background technique [0002] At present, a large amount of dredging mud is produced during the dredging process of rivers, lakes and reservoirs, and the total amount cannot be underestimated. For example, the dredging volume of Taihu Lake reached 35 million m 3 , average annual 4-6 million m 3 . Preliminary statistics show that the amount of dredged sludge in my country's inland rivers, lakes and reservoirs exceeds 500 million m each year 3 , the size is astonishing, and the terminal disposal faces many challenges. The engineering community has tried many methods to dispose of sludge, the common ones are: (1) storage yard treatment; (2) landfill after mechanical dehydration and ...

AI Technical Summary

Problems solved by technology

[0005] (1) When the project solidifies the sludge and utilizes the filler, the construction speed is often very fast, and a large amount of sludge is processed at one time. The moisture content of the sludge treated in the same batch may vary greatly, and the same amount of curing agent is added during the process. There is a large difference in the strength of the solidified sludge, and even the strength does not meet the standard.

[0006] (2) It is difficult to remedy the situation where the strength does not meet the standard. After curing, it is impossible to add curing agent. It is impractical to re-excavate the cured sludge, because it may involve a large area of ​​filled soil that has been constructed.

[0007] (3) At present, most projects only carry out the strength test after the sludge is solidified, but there is a lack of pre-construction strength control measures

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