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Curing agent for hydraulic filling of marine mud and curing method thereof

A curing method and curing agent technology are applied in the field of material science to achieve the effects of shortening drainage consolidation time, improving soil construction performance, and reducing raw material costs and transportation costs

Inactive Publication Date: 2014-08-06
ZHEJIANG INST OF HYDRAULICS & ESTUARY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem mainly solved by the present invention is to provide a dredging reclamation marine silt curing agent and its curing method, the main curing agent used is lime and fly ash, and the secondary curing agent is added to improve the lime-fly ash solidified soil itself The cracking performance is mainly aimed at clays with high plasticity index, which solves the problem that the lime-fly ash solidified soil has a large shrinkage for soil with high plasticity index

Method used

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  • Curing agent for hydraulic filling of marine mud and curing method thereof

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Effect test

Embodiment 1

[0023] A dredging reclamation mud solidifying agent, which is composed of the following raw materials in proportion by weight: 20.6 parts of quicklime, 41.3 parts of secondary fly ash, 0.3 part of triethanolamine, 20.6 parts of raw gypsum, 3.4 parts of sodium hydroxide, water 13.8 parts of glass; the preparation of the dredging and reclamation marine sludge curing agent is carried out as follows: first add quicklime and secondary fly ash to the mixer according to the above ratio and stir for 5 minutes, then add triethanolamine, quick gypsum, sodium hydroxide Add the water glass and water glass into the blender according to the above ratio and stir evenly.

[0024] The solidification method of the dredged marine sediment solidification agent comprises the following steps: using a cutter suction pump to control the water content at 85% on the original mud sample, and blending the above-mentioned The dredging reclamation mud curing agent is cured under natural curing conditions f...

Embodiment 2

[0026] A dredging reclamation mud solidifying agent, which is composed of the following raw materials in proportion by weight: 18.5 parts of quicklime, 37 parts of secondary fly ash, 0.5 part of triethanolamine, 23 parts of raw gypsum, 5 parts of sodium hydroxide, water 16 parts of glass; the preparation of the dredging and reclamation mud solidifying agent is carried out as follows: first add quicklime and secondary fly ash to the mixer according to the above ratio and stir for 5 minutes, then add triethanolamine, quick gypsum, sodium hydroxide Add the water glass and water glass into the blender according to the above ratio and stir evenly.

[0027] The solidification method of the dredged marine sediment solidification agent comprises the following steps: using a cutter suction pump to control the water content at 80% on the original mud sample, and blending the above-mentioned The dredged reclamation mud curing agent is cured under natural curing conditions for 7 days afte...

Embodiment 3

[0029] A dredging reclamation mud solidifying agent, which is composed of the following raw materials in proportion by weight: 23 parts of quicklime, 45 parts of secondary fly ash, 0.2 part of triethanolamine, 18 parts of raw gypsum, 2 parts of sodium hydroxide, water 11.8 parts of glass; the preparation of the blown reclamation marine sludge solidifying agent is carried out as follows: first add quicklime and secondary fly ash to the mixer according to the above ratio and stir for 5 minutes, then add triethanolamine, quick gypsum, sodium hydroxide Add the water glass and water glass into the blender according to the above ratio and stir evenly.

[0030] The solidification method of the dredged marine sediment solidification agent comprises the following steps: using a cutter suction pump to control the water content at 90% on the original mud sample, and blending the above-mentioned The dredged reclamation sludge curing agent is cured under natural curing conditions for 7 day...

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Abstract

The invention discloses a curing agent for hydraulic filling of marine mud and a curing method thereof. The curing agent comprises the following raw materials in parts by weight: 8 to 23 parts of lime, 37 to 45 parts of fly ash, 0.2 to 0.5 part of triethanolamine, 18 to 23 parts of calcium sulfate, 2 to 5 parts of strong base, and 10-16 parts of water glass. The curing method comprises the following steps: the water content of an undisturbed mud sample is controlled by a cutter-suction pump in the range of 80% to 90%, and according to the mechanical stress borne by a soil mass in practical engineering, the curing agent is admixed; the admixture is then maintained for 6 to 8 days under a natural curing condition after admixing. According to the curing agent disclosed by the invention, lime and fly ash are mainly adopted as the main curing agents, auxiliary curing agents are added to improve the cracking property of the lime-fly ash stabilized soil, clay soil with higher plastic index are the main targets for curing, and the problem of greater shrinkage of the lime-fly ash stabilized soil used on the clay soil with higher plastic index is solved.

Description

technical field [0001] The invention relates to the field of material science, in particular to a dredging and reclamation marine mud curing agent and a curing method thereof. Background technique [0002] The dredging reclamation silt curing agent is mainly used in large-scale projects such as seaport foundation reinforcement and roadbed reinforcement. Since the early 1990s, the problems of "more people and less land" and "every inch of land" in coastal ports have become more and more serious, and sand and gravel fillers are extremely scarce. Reduce land-building costs. [0003] However, due to the poor engineering geological characteristics of the seabed mud sucked through the suction pipe, such as high water content and salt content, large void ratio, high compressibility, and long drainage and consolidation time, the cost of dredging and filling sludge is expensive, and the foundation is completely filled. Finally, it takes 2 to 3 years to dry before physical reinforce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/26C02F11/14C04B18/08C04B24/12
CPCY02W30/91
Inventor 史燕南俞炯奇臧林张超杰周剑峰陈式华
Owner ZHEJIANG INST OF HYDRAULICS & ESTUARY
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