Muck soil composite curing agent

A compound curing agent and silty soil technology, which is applied in soil protection, fertilizer mixture, soil conditioning materials, etc., can solve the problems of inability to deal with acidic silt soil with high water content, small strength adjustment range, and low strength. Achieve high early strength, good frost resistance and good water stability

Inactive Publication Date: 2007-12-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, cement, lime, fly ash or simple mixtures of these materials are mainly used as curing materials in China. Such traditional curing materials generally have low early strength, small strength adjustme

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The soil is muddy soil, and its performance indicators are shown in Table 1 and Table 2.

[0022] Table 1 Physical and mechanical indexes of soil samples

[0023]

[0024] Table 2 The main chemical composition and pH value of soil samples

[0025] Rock and soil name

[0026] table 3

[0027] Element

[0028] Before the test, remove the impurities in the soil sample, weigh 600g of the soil sample, add the curing material according to the ratio in Table 3, stir the mixture evenly to make three parallel cylinder samples of Ф39.1×80mm, standard curing, 7 The daily average strength can reach 0.890MPa, and the 60-day average strength can reach 1.680MPa.

Embodiment 2

[0030] Table 4

[0031] Element

[0032] Before the test, remove the impurities in the soil sample, weigh 600g of the soil sample, add the curing material according to the ratio in Table 4, stir the mixture evenly to make three parallel cylinder samples of Ф39.1×80mm, standard curing, 7 The daily average strength can reach 1.046MPa, and the 60-day average strength can reach 2.000MPa.

Embodiment 3

[0034] table 5

[0035] Element

[0036] Before the test, remove the impurities in the soil sample, weigh 600g of the soil sample, add the curing material according to the ratio in Table 5, stir the mixture evenly to make three parallel cylinder samples of Ф39.1×80mm, standard curing, 7 The daily average strength can reach 1.115MPa, and the 60-day average strength can reach 2.500MPa.

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PUM

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Abstract

The composite sludge curing agent consists of Portland cement as cementing material; alkaline exciting component selected from lime, water glass and sodium hydroxide; expanding component of gypsum; and surfactant selected from triethanolamine and superplasticizer FDN. It has the advantages of high early strength, stable long-term strength, high water stability, high frost resistance, etc. It may be used in curing waste sludge into stable building material for road bed, composite foundation, etc.

Description

technical field [0001] The invention relates to a material for solidifying muddy soil, especially suitable for solidification treatment of muddy soil with high water content and high organic matter content. Background technique [0002] Stabilized soil is the addition of admixtures to the soil, which can undergo a series of physical and chemical reactions with the soil to solidify the soil, improve the physical and mechanical properties of the soil, reduce the water sensitivity of the soil and improve the water stability of the soil. It has a wide range of applications and superior performance, and is suitable for the reinforcement of various foundation soils; the strength of the consolidated soil can be adjusted to meet different engineering requirements; the early strength of the reinforced soil is high, which is conducive to speeding up the construction progress; local materials are used to reduce the amount of sand and gravel used , Reduce environmental damage, etc. [...

Claims

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Application Information

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IPC IPC(8): C09K17/10E02D3/12C09K103/00
CPCC04B28/18C04B28/04C04B2111/00732
Inventor 徐日庆郭印邵玉芳刘增永
Owner ZHEJIANG UNIV
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