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Waste glass fiber reinforced plastic fiber reinforced solidified sludge block and preparation method thereof

A technology for solidifying silt and fiber reinforcement, applied in the field of silt solidification, can solve the problems of easy cracking toughness, insufficient compressive strength, etc., and achieve the effect of improving overall performance, reducing production cost and cost reduction.

Pending Publication Date: 2022-07-26
HEBEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the present invention provides a solidified silt block reinforced with waste glass fiber reinforced plastics and its preparation method to overcome the problems of insufficient compressive strength, easy cracking and poor toughness in the silt solidification in the prior art

Method used

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  • Waste glass fiber reinforced plastic fiber reinforced solidified sludge block and preparation method thereof
  • Waste glass fiber reinforced plastic fiber reinforced solidified sludge block and preparation method thereof
  • Waste glass fiber reinforced plastic fiber reinforced solidified sludge block and preparation method thereof

Examples

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preparation example Construction

[0054] see figure 2 As shown, it is a flow chart of the preparation method of the alkali activator of the present invention, and the preparation method of the alkali activator comprises:

[0055] Step s1, take by weighing the sodium hydroxide, liquid sodium silicate and water of the pre-prepared components according to the proportioning;

[0056] Step s2, put the weighed sodium hydroxide, liquid sodium silicate and water into a container and stir until the solution is evenly mixed;

[0057] In step S3, the homogeneously mixed solution is sealed and left for 24 hours before use.

[0058] see image 3 As shown, it is the chemical composition and content table of the silt of the present invention, and the composition structure in the described silt is mainly quartz, kaolinite, illite and muscovite, please refer to Figure 4 , Figure 5 As shown, the initial moisture content of the sludge is 80%-120%, the liquid limit and plastic limit are 81% and 39%, the plasticity index is...

specific Embodiment 1

[0074] The invention provides a solidified sludge block reinforced by waste glass fiber reinforced plastics, which is prepared according to the material of solidifying 1 ton of sludge. , Fly ash 75kg, slag 75kg, water 40kg, sodium hydroxide 9.6kg, sodium silicate 6.4kg. The solid sodium hydroxide, liquid sodium silicate and water were poured into a glass beaker, stirred clockwise with a glass rod until the solution was evenly mixed, and then the mixed solution was sealed with a plastic film and allowed to stand for 24 hours before use.

[0075]Specifically, the mechanical properties of the solidified sludge block prepared according to the proportioning in Example 1 were tested, and the residual strength value of the block in the 28d double peak strain environment was 815kPa, and the 7d unconfined compressive strength was 301kPa, 28d unconfined compressive strength is 1245kPa, 7d indirect tensile strength is 89.46kPa, 28d indirect tensile strength is 196.45kPa, CBR value is 16....

specific Embodiment example 2

[0077] The invention provides a solidified sludge block reinforced by waste glass fiber reinforced plastics, which is prepared according to the material of solidifying 1 ton of sludge. , 75kg of fly ash, 75kg of slag, 40kg of water, 9.6kg of sodium hydroxide, 6.4kg of sodium silicate, and 1kg of waste FRP fiber. The solid sodium hydroxide, liquid sodium silicate and water were poured into a glass beaker, stirred clockwise with a glass rod until the solution was evenly mixed, and then the mixed solution was sealed with a plastic film and allowed to stand for 24 hours before use.

[0078] Specifically, the mechanical properties of the solidified silt blocks reinforced with waste FRP fibers prepared according to the proportions in Example 2 were tested, and the residual strength value of the block under the twice peak strain environment of 28d was 623kPa, and no value of 7d was obtained. The confining compressive strength is 398kPa, the 28d unconfined compressive strength is 1299...

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Abstract

The invention relates to the technical field of sludge solidification, in particular to a waste glass fiber reinforced plastic fiber reinforced solidified sludge block and a preparation method thereof.The block comprises 100 parts of sludge, 15 parts of geopolymer cementing materials and 0-0.7 part of waste glass fiber reinforced plastic fibers; the preparation method comprises the following steps: weighing quantitative sludge, waste glass fiber reinforced plastic fiber, fly ash and slag according to the proportion; putting the raw materials into a stirring device, and stirring at a low speed to uniformly mix the raw materials; weighing a proper amount of an alkali activator prepared in advance, putting the alkali activator into the uniformly stirred raw materials, and stirring at a high speed to form homogeneous sludge slurry; pouring the sludge slurry into a mold and compacting the sludge slurry into a compact state to obtain waste glass fiber reinforced plastic fiber reinforced solidified sludge blocks; the glass fiber reinforced plastic fiber reinforced solidified sludge block and the mold are placed in a curing environment for 3 days, then demolding is conducted, curing continues to be conducted to the designed age, the temperature range of the curing environment is 19-21 DEG C, and the relative humidity is not lower than 95%.

Description

technical field [0001] The invention relates to the technical field of silt solidification, in particular to a solidified silt block reinforced with waste glass fiber reinforced plastics and a preparation method thereof. Background technique [0002] Our country is vast, with long borders and many rivers. Therefore, in inland dredging, wharf, waterway construction, urban sewage, sludge treatment and other projects, a large amount of waste sludge is produced every year. However, the silt in various regions exhibits different compositional contents due to different regions. [0003] Whether using traditional sludge curing materials such as cement, quicklime, etc. or using relatively low-carbon and environmentally friendly solid waste materials such as fly ash, slag, etc. as sludge curing agents in recent years, there are still some unavoidable drawbacks in the process of sludge reinforcement. , especially for some advanced projects such as roads, bridges, and building founda...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B18/04
CPCC04B28/006C04B18/0481C04B2111/0075C04B2111/00767C04B2201/50C04B18/08C04B18/141C04B22/062C04B12/04C04B18/0436C04B18/0427
Inventor 潘竹孙晓堃杨振甲张默王芳史钰鹏
Owner HEBEI UNIV OF TECH
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