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High-strength solidifying agent for sludge solidified soil and preparation method thereof

A technology of solidifying soil and solidifying agent, applied in chemical instruments and methods, fixed/solidified sludge treatment, sludge treatment, etc. The effect of rapid increase in strength

Inactive Publication Date: 2019-02-05
JIANGSU NATURE WAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the technical problem of low strength of silt-solidified soil, and at the same time realizes the green and environmental-friendly curing treatment of soft foundations, which helps to expand the application range of silt-solidified soil and presents huge technical and environmental advantages

Method used

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  • High-strength solidifying agent for sludge solidified soil and preparation method thereof
  • High-strength solidifying agent for sludge solidified soil and preparation method thereof
  • High-strength solidifying agent for sludge solidified soil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] In the present embodiment, the solidifying agent for high-strength silt solidified soil is composed as Table 1. The prepared solidifying agent is used to solidify the silt. The moisture content of the silt is 45%. Every cubic silt is mixed with 150kg of this curing agent and stirred evenly, and the prepared silt is solidified. The mechanical properties of soil at 7 days and 28 days age are shown in Table 2.

[0048] Table 1 Weight composition of curing agent for high-strength silt-solidified soil (unit: part)

[0049]

[0050] Table 2 Mechanical properties of prepared silt-solidified soil at 7 days and 28 days age

[0051] age

Embodiment 2

[0053] In the present embodiment, the solidifying agent composition for high-strength silt solidified soil is as shown in Table 3. The prepared solidifying agent is used to solidify the silt. The moisture content of the silt is 50%. Every cubic silt is mixed with 150kg of this curing agent and stirred evenly, and the prepared silt is solidified. The mechanical properties of soil at 7 days and 28 days age are shown in Table 4.

[0054] Table 3 Weight composition of curing agent for high-strength silt-solidified soil (unit: part)

[0055]

[0056] Table 4 Mechanical properties of prepared silt-solidified soil at 7 days and 28 days age

[0057] age

Embodiment 3

[0059] In this embodiment, the solidifying agent for high-strength silt solidified soil is composed as Table 5. The prepared solidifying agent is used to solidify the silt. The moisture content of the silt is 56%. Every cubic silt is mixed with 160kg of this curing agent and stirred evenly, and the prepared silt is solidified. The mechanical properties of soil at 7 days and 28 days age are shown in Table 6.

[0060] Table 5 Weight composition of curing agent for high-strength silt-solidified soil (unit: part)

[0061]

[0062] Table 6 Mechanical properties of prepared silt-solidified soil at 7 days and 28 days age

[0063]

[0064]

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Abstract

The invention discloses a high-strength solidifying agent for sludge solidified soil and a preparation method thereof. The solidifying agent is prepared by compounding the following components in parts by weight: 90-95 parts of inorganic gel component, 5-10 parts of slight-expansion component, 0.5-1 part of nano filling component, 2-4 parts of water retention and internal maintenance component, 0.2-0.4 part of cosmid aggregate component and 0.1-0.3 part of viscosity reducing component. The solidifying agent for sludge solidified soil disclosed by the invention has the advantages of moderate dosage, high solidifying strength, fast strength increase, good solidifying effect on sludge with high water content, strong environmental friendliness and the like; the unconfined compressive strengthof the prepared solidified soil reaches 1.5 MPa or more, and the cohesion C exceeds 100 kPa. The technical problem of low compressive strength and low cohesion of the sludge solidified soil is solved,and the application range of the sludge solidified soil is expanded.

Description

technical field [0001] The invention relates to the technical field of curing agents, and is especially suitable for curing sludge to prepare sludge-solidified soil with high mechanical strength, in particular to a curing agent for high-strength sludge-solidified soil and a preparation method thereof. Background technique [0002] With the rapid advancement of urbanization, the shortage of construction land resources has gradually become prominent, and coastal cities have successively experienced land shortages of varying degrees. Therefore, the rational development of a large number of coastal tidal flats that do not require natural protection has become the government's solution to the problem of land shortage. effective means. Coastal tidal flats usually refer to the shallow beaches formed by the sediment near the coast entrained by ocean currents. Its remarkable feature is that the surface layer is covered with deep silt, which belongs to soft foundation and has poor bea...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B28/08C04B28/02C04B28/00C02F11/00
CPCC04B28/04C02F11/008C04B28/00C04B28/021C04B28/08C04B2111/00784C04B2201/50C04B18/141C04B18/08C04B22/143C04B22/142C04B20/008C04B14/28C04B14/104C04B24/38
Inventor 钟天雪汪潇陈雷
Owner JIANGSU NATURE WAY TECH
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