Production process for solidifying and regenerating roadbed filler by using mucky muck

A technology of roadbed filler and production process, which is applied in the direction of roads, roads, and solid waste management, can solve the problems of large-scale consumption of muddy residue and shortage of roadbed filler resources, and achieves easy industrial application and large-scale promotion, Easy to transport and pave, simple and efficient process

Inactive Publication Date: 2021-09-28
ZHEJIANG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention can finally achieve synergy to solve the problems of large-scale consumption of muddy residue and shortage of roadbed filling resources

Method used

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  • Production process for solidifying and regenerating roadbed filler by using mucky muck
  • Production process for solidifying and regenerating roadbed filler by using mucky muck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (a) Take the muddy dregs for index test, the liquid limit of the muddy dregs is 46.0%, the plastic limit is 22.4%, the plasticity index is 23.6, the clay content is 33%, and the water content is 48.8%. According to the test Gained parameters, determine the amount of curing agent to be 6%;

[0037] (b) without pretreatment, the muddy dregs with a moisture content of 48.8% higher than the liquid limit value are uniformly mixed with a curing agent whose quality is 6% of the dregs quality, so as to reduce the plasticity index and Moisture content, to achieve granulation;

[0038] (c) Perform 7-day turning and throwing maintenance on the pellets to reduce the moisture content of the pellets and realize the homogenization of the pellets;

[0039] (d) The muddy slag is produced to solidify the recycled roadbed filler, which is immediately compacted as a specimen for the California load-carrying ratio test, and the strength test is carried out after immersion in water for 4 da...

Embodiment 2

[0042] (a) Taking muddy dregs for index test, the liquid limit of muddy dregs is 46.0%, the plastic limit is 22.4%, the plasticity index is 23.6, the clay content is 33%, and the water content is 54.4%. According to the test Obtained parameters, determine the amount of curing agent to be 10%;

[0043] (b) without pretreatment, the muddy dregs with a moisture content of 54.4% higher than the liquid limit value are homogeneously mixed with a solidifying agent whose quality is 10% of the dregs quality, so as to reduce the plasticity index and Moisture content, to achieve granulation;

[0044] (c) Perform 4-day turning and throwing maintenance on the pellets to reduce the moisture content of the pellets and realize the homogenization of the pellets;

[0045] (d) The muddy slag is produced to solidify the recycled roadbed filler, which is immediately compacted as a specimen for the California load-carrying ratio test, and the strength test is carried out after immersion in water f...

Embodiment 3

[0048] (a) Taking muddy dregs for index test, the liquid limit of muddy dregs is 41.5%, the plastic limit is 27.6%, the plasticity index is 13.8, the clay content is 19%, and the water content is 44.9%. According to the test Gained parameters, determine the amount of curing agent to be 8%;

[0049] (b) without pretreatment, the silty dregs with a moisture content of 41.5% higher than the liquid limit value are homogeneously mixed with a curing agent whose quality is 8% of the slag quality, so as to reduce the plasticity index and Moisture content, to achieve granulation;

[0050] (c) Perform 4-day turning and throwing maintenance on the pellets to reduce the moisture content of the pellets and realize the homogenization of the pellets;

[0051] (d) The muddy slag is produced to solidify the recycled roadbed filler, which is immediately compacted as a specimen for the California load-carrying ratio test, and the strength test is carried out after immersion in water for 4 days....

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Abstract

The invention discloses a production process for solidifying and regenerating roadbed filler by using mucky muck. The production process comprises the following steps that the using amount of a curing agent is determined according to grain composition, plasticity index and water content of muck; the mucky muck is mixed with the curing agent to realize granulation; granules are turned, thrown and maintained to realize water reduction and homogenization of the granules; and the moisture content of the granules is detected, and when the moisture content of the granules is not higher than the optimal moisture content+5%, production of the regenerated roadbed filler is completed by taking the homogenized granules as the regenerated roadbed filler. According to the production process, the natural mucky muck can be directly solidified, pretreatment links such as drying and crushing or water distribution fluidization are not needed, the using amount of the curing agent is small, the treatment period is short, the regenerated filler is in the shape of loose and compactable powder which is appropriate in water content and viscosity, transfer and road construction operation are easy, secondary ash doping is not needed, the filler can be directly paved and rolled, and the roadbed bearing capacity requirement is met after compaction. The technological process is simple and efficient, and industrial application and large-scale popularization are easy.

Description

technical field [0001] The invention belongs to the production process of a filler in the field of resource utilization of construction waste, and in particular relates to a production process of solidified and regenerated roadbed filler with muddy dregs. Background technique [0002] The muddy soil is widely distributed along the southeast coast of my country. Because of its high moisture content and viscosity and poor engineering properties, it is often discarded or landfilled after excavation. The disposal of muddy muck not only brings safety hazards and environmental pollution, but also poses challenges to the increasingly tense land resources. It is of great practical significance for the construction of a waste-free city and an environment-friendly society to explore new disposal methods for silty dregs and turn them into treasures for large-scale resource utilization. [0003] While the output of muddy muck has been increasing year by year, the protection of natural ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28C5/00C04B28/00C04B28/12C04B18/04E01C3/00
CPCB28C5/003C04B28/00C04B28/12C04B18/0418E01C3/00Y02W30/91
Inventor 詹良通王竟宇梁腾王顺玉陈云敏楼洪海张海东
Owner ZHEJIANG UNIV
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