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Beach sludge composite curing agent as well as preparation method, use method and application thereof

A composite curing agent and beach silt technology, applied in the field of environmental engineering, can solve the problems of time-consuming, labor-intensive, material-intensive, low-strength of the solidified body, and increased cost, and achieves a rapid dehydration and reaction, outstanding environmental protection, and outstanding advantages. Effect

Inactive Publication Date: 2016-09-07
天津市三川恒泰科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The traditional sludge treatment method is not only labor-intensive, time-consuming and material-intensive, but also has low strength of the solidified body, and the strength is lower after water absorption, which increases the cost of the composite sludge solidifier for solidifying sludge with a high water content.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 gets each raw material component of beach silt composite curing agent by following weight percentage:

[0033] Ordinary Portland cement clinker 50%, sulphoaluminate cement clinker 5%, phosphogypsum 2%, desulfurization gypsum 4%, slag 33.5%, Naphthalene additives 1.5%, sulfates 4%.

[0034] Wherein preferably, the ordinary Portland cement clinker, sulphoaluminate cement clinker, phosphogypsum, desulfurized gypsum and slag are all active materials calcined at high temperature. Preferably, the main components of the Na-based additive are a high-efficiency water reducer and a consolidation strength activator.

[0035] After mixing the above-mentioned raw material components according to the above-mentioned weight percentage, enter the pre-crusher and tube mill for grinding through the automatic batching microcomputer, and obtain the beach silt composite curing agent after grinding evenly, and at the same time make the beach silt composite The specific surface ...

Embodiment 2

[0037] Embodiment 2 gets each raw material component of beach silt composite solidifying agent by following weight percentage:

[0038] Ordinary Portland cement clinker 50%, sulphoaluminate cement clinker 5%, phosphogypsum 2%, desulfurization gypsum 4%, slag 33.5%, Naphthalene additives 1.5%, sulfates 4%.

[0039] Wherein preferably, the ordinary Portland cement clinker, sulphoaluminate cement clinker, phosphogypsum, desulfurized gypsum and slag are all active materials calcined at high temperature. Preferably, the main components of the Na-based additive are a high-efficiency water reducer and a consolidation strength activator.

[0040]After mixing the above-mentioned raw material components according to the above-mentioned weight percentage, enter the pre-crusher and tube mill for grinding through the automatic batching microcomputer, and obtain the beach silt composite curing agent after grinding evenly, and at the same time make the beach silt composite The specific surf...

Embodiment 3

[0042] Embodiment 3 takes ordinary portland cement and conducts a comparative test.

[0043] Ordinary Portland cement is used to consolidate a kind of silt in Binhai New Area, Tianjin. The moisture content of the silt is 80%. The ordinary Portland cement is mixed with the silt at a ratio of 12% by weight, and the silt is stirred. After it is evenly compacted, its unconfined compressive strength value reaches 0.19Mpa after being placed for 1 day, its unconfined compressive strength value reaches 0.71Mpa after 7 days, and its unconfined compressive strength value reaches 0.64 after 28 days MPa.

[0044] Comparing the test data of Examples 1-3, it can be clearly seen that the consolidated body admixed with ordinary Portland cement alone is not easy to dehydrate, has low strength, and its unconfined compressive strength is only the composite solidification of beach silt of the present invention. It is about 30% of the strength of the consolidated body of the cement, and with the ...

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Abstract

The invention discloses a beach sludge composite curing agent as well as a preparation method, a use method and an application thereof. The beach sludge composite curing agent is obtained by mixing and grinding of an ordinary Portland cement clinker, a sulphoaluminate cement clinker, phosphogypsum, desulfurization gypsum, mineral waste residues, a naphthalene-based additive and sulfates, wherein the weight percentages of the raw materials are as follows: 40-60% of the ordinary Portland cement clinker, 5-10% of the sulphoaluminate cement clinker, 2-4% of the phosphogypsum, 3-6% of the desulfurization gypsum, 30-50% of the mineral waste residues, 1-3% of the naphthalene-based additive and 3-5% of the sulfates. The beach sludge composite curing agent disclosed by the invention can greatly shorten the curing time of sludge, and is small in doping amount, high in concretion strength, low in construction cost, and good in curing stability.

Description

technical field [0001] The invention relates to the technical field of environmental engineering, in particular to a composite curing agent for beach silt and its preparation method, use method and application. Background technique [0002] In recent years, the soft soil foundations formed by a large number of marine tidal flats and dredging and dredging are urgently needed to be developed and utilized. However, the traditional treatment methods for soft soil foundations have a long period of time, high cost, and low foundation bearing capacity, which requires a large amount of materials to be transported from different places. Replacement means that the ecological environment is destroyed, and the durability is poor, and the contradiction between economic development and environmental protection is becoming increasingly prominent. [0003] Using beach silt soil curing agent to stabilize silt soil is a popular technology in the current silt soil treatment technology. The sil...

Claims

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Application Information

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IPC IPC(8): C04B28/06C02F11/14
CPCC02F11/14C04B28/06C04B2201/50C04B7/02C04B22/144C04B22/145C04B18/141C04B24/00C04B22/142
Inventor 刘玉芝杨占友李成伟张红凯王春利
Owner 天津市三川恒泰科技有限公司
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