Fiber-reinforced sludge curing agent

A technology of fiber reinforcement and curing agent, applied in the direction of dewatering/drying/concentrating sludge treatment, etc., can solve the problems of high brittleness, easy cracking, poor toughness, etc.

Inactive Publication Date: 2014-06-25
JIANGSU NATURE WAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to my country's vast land and rich resources, the causes and components of silt soils vary widely in different places. Whether it is traditional silt curing materials such as cement and lime, or a new type of silt curing material using various industrial solid wastes - silt curing agent, there are also silt curing agents in the reinforcement of silt. There are some disadvantages, especially in some high-grade projects such as bridges, roads, and building foundations with high requirements and high impact loads, there are often problems such as low tensile strength, high brittleness, easy cracking, poor toughness, etc. defect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The fiber-reinforced sludge solidifying agent of the present embodiment comprises each component of following weight percent content: solidifying material 99%, polypropylene fiber 1%; Wherein the composition formula of solidifying material is: slag 10%, fly ash 40%, cement 20%, lime 25%, activator sodium sulfate 5%. In this implementation case, 80 kg of curing agent is added to each cubic silt. After the solidified soil is solidified, the unconfined compressive strength reaches 241KPa at 7 days, 295KPa at 14 days, and 338KPa at 28 days. At the same time, the dry-wet cycle performance of the solidified soil basically tends to be stable.

Embodiment 2

[0021] The fiber-reinforced sludge solidifying agent of the present embodiment comprises each component of following weight percentage content: solidified material 99.2%, bamboo fiber 0.8%; Wherein the composition formula of solidified material is: slag 20%, fly ash 35%, cement 15% %, lime 29.5%, activator sodium silicate 0.5%. In this implementation case, 80 kg of curing agent is added to each cubic silt. After the solidified soil is solidified, the unconfined compressive strength reaches 201KPa at 7 days, 255KPa at 14 days, and 298KPa at 28 days. At the same time, the dry-wet cycle performance of the solidified soil basically tends to be stable.

Embodiment 3

[0023] The fiber-reinforced sludge solidifying agent of the present embodiment comprises each component of following weight percent content: solidifying material 99.4%, polypropylene fiber 0.4%, bamboo fiber 0.2%; Wherein the composition formula of solidifying material is: slag 30%, pulverized coal Ash 15%, cement 25%, lime 25.5%, activator sodium sulfate 4.5%. In this implementation case, 80 kg of curing agent is added to each cubic silt. After the solidified soil is solidified, the unconfined compressive strength reaches 271KPa at 7 days, 325KPa at 14 days, and 408KPa at 28 days. At the same time, the dry-wet cycle performance of the solidified soil basically tends to be stable.

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Abstract

The invention discloses a fiber-reinforced sludge curing agent, which mainly comprises 99%-99.9% by weight of curing material and 0.1%-1% by weight of fiber material, wherein the curing material comprises the following components in percentage by weight: 10-30% of mineral slag, 15%-45% of pulverized ash, 10%-25% of cement, 20%-30% of lime and 0.5%-5% of exciter. Aiming at the problems of the existing sludge curing material, such as high addition quantity, poor mechanical performance, poor tensile toughness and poor bending toughness, the sludge curing agent is reinforced by the fiber material, and therefore the comprehensive mechanical performances of the sludge curing soil, such as compressive strength, splitting tensile strength and toughness, as well as shock resistance property, can be effectively enhanced; moreover, the addition of fibers is small, the fiber-reinforced sludge curing agent is convenient to produce and wide in application range.

Description

[0001] technical field [0002] The invention relates to a sludge solidification material, in particular to a fiber-reinforced sludge solidification agent. Background technique [0003] For long-term special soil solidification, especially in the process of silt solidification, the early chemical reinforcement method for silt is usually cement or lime reinforcement, because cement or lime has some special excellent properties in solidified silt, such as lime-reinforced silt soil The early compressive strength is high, which can fully meet the requirements of construction and shorten the construction period, so it has been widely used in the process of silt reinforcement. [0004] Recently, people have become more and more aware of the importance of environmental protection, energy saving and emission reduction, and a group of innovative , The energy-saving material industry came into being and gradually replaced the application of traditional high energy-consuming indus...

Claims

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Application Information

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IPC IPC(8): C04B28/10C04B16/02C04B16/06C02F11/14
Inventor 钟天雪汪潇
Owner JIANGSU NATURE WAY TECH
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