JP2009203318A5 - - Google Patents
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- JP2009203318A5 JP2009203318A5 JP2008045945A JP2008045945A JP2009203318A5 JP 2009203318 A5 JP2009203318 A5 JP 2009203318A5 JP 2008045945 A JP2008045945 A JP 2008045945A JP 2008045945 A JP2008045945 A JP 2008045945A JP 2009203318 A5 JP2009203318 A5 JP 2009203318A5
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Description
すなわち、本発明は、以下の態様を包含する。
[1] アルカリ珪酸塩水溶液を主剤とした土質安定化薬液に用いる硬化剤であって、
最大粒子径600μm以下の消石灰((a)成分)と、最大粒子径90μm以下のII型無水石膏((b)成分)と、アニオン系界面活性剤((c)成分)とを含有し、
(a)成分100質量部に対して、(b)成分の含有量が40質量部以上70質量部以下、(c)成分の含有量が0.25質量部以上0.85質量部以下であることを特徴とする土質安定化薬液用硬化剤。
[2] (c)成分がリグニンスルホン酸塩である、[1]に記載の土質安定化薬液用硬化剤。
[3] [1]または[2]に記載の土質安定化薬液用硬化剤と、アルカリ珪酸塩水溶液とを含有する土質安定化薬液。
That is, this invention includes the following aspects.
[1] A curing agent used for a soil stabilization chemical solution mainly composed of an alkali silicate aqueous solution,
Contains a maximum particle diameter 600μm or less hydrated lime ((a) component), and a maximum particle size 90μm or less of type II anhydrous gypsum ((b) component), an anionic surfactant and ((c) component),
(A) With respect to 100 parts by mass of the component, the content of the (b) component is 40 parts by mass or more and 70 parts by mass or less, and the content of the (c) component is 0.25 parts by mass or more and 0.85 parts by mass or less. A hardener for soil stabilization chemicals characterized by the above.
[2] The hardener for soil stabilization chemical solution according to [1], wherein the component (c) is lignin sulfonate.
[3] A soil stabilization chemical containing the curing agent for a soil stabilization chemical according to [1] or [2] and an aqueous alkali silicate solution.
[消石灰]
本発明における消石灰は、最大粒子径が600μm以下、好ましくは150μm以下のものである。消石灰の最大粒子径が前記上限値以上であると、硬化時間が長くなる。このような消石灰は、例えば、工業用消石灰等の市販品を、最大粒子径が600μm以下、好ましくは150μm以下になるように粉砕・分級することにより得られる。
消石灰の最大粒子径の下限値には特に制限はないが、最大粒子径が10μm未満の消石灰を用いた場合には、粉砕・分級に長時間を要し不経済であるから、10μm以上であることが好ましい。
[Slaked lime]
The slaked lime in the present invention has a maximum particle size of 600 μm or less , preferably 150 μm or less . When the maximum particle diameter of the slaked lime is equal to or greater than the upper limit value, the curing time becomes long. Such slaked lime is obtained, for example, by pulverizing and classifying a commercial product such as industrial slaked lime so that the maximum particle size is 600 μm or less , preferably 150 μm or less .
The lower limit of the maximum particle size of slaked lime is not particularly limited. However, when slaked lime having a maximum particle size of less than 10 μm is used, it takes a long time for pulverization / classification, which is uneconomical and is not less than 10 μm. It is preferable.
II型無水石膏の最大粒子径は90μm以下、好ましくは45μm以下である。II型無水石膏の最大粒子径が前記上限値以上であると、硬化時間が長くなる。このようなII型無水石膏は、例えば、最大粒子径が90μm以下、好ましくは45μm以下になるように、粉砕・分級することにより得られる。
II型無水石膏の最大粒子径の下限値には特に制限はないが、最大粒子径が5μm未満のII型無水石膏を用いた場合には、粉砕・分級に長時間を要し不経済であるから、5μm以上であることが好ましい。
The maximum particle size of type II anhydrous gypsum is 90 μm or less , preferably 45 μm or less . When the maximum particle size of the type II anhydrous gypsum is equal to or larger than the above upper limit value, the curing time becomes long. Such type II anhydrous gypsum can be obtained, for example, by pulverization and classification so that the maximum particle size is 90 μm or less , preferably 45 μm or less .
The lower limit of the maximum particle size of type II anhydrous gypsum is not particularly limited. However, when type II anhydrous gypsum having a maximum particle size of less than 5 μm is used, it takes a long time to grind and classify, which is uneconomical. Therefore, it is preferably 5 μm or more.
表2から明らかなように、硬化剤が、最大粒子径600μm以下の消石灰と、最大粒子径90μm以下のII型無水石膏と、アニオン系界面活性剤とを含有し、無水石膏の含有量が40〜70質量部、アニオン系界面活性剤の含有量が0.25〜0.85質量部である試験番号2,4〜8,12〜15,17〜20,22,25〜28の実施例では、硬化時間、硬化体強度、B液の均質性の性能基準を全て同時に満たしていた。
これに対し、石灰類として生石灰を用いた試験番号2の例では、硬化時間が長かった。
消石灰の最大粒子径が600μmを超えていた試験番号3の例では、硬化時間が長かった。
石膏として2水石膏を用いた試験番号9の例では、硬化時間が長かった。
石膏として半水石膏を用いた試験番号10の例では、硬化剤液の均質性が低かった。
II型無水石膏の最大粒子径が90μmを超えていた試験番号11の例では、硬化時間が長かった。
II型無水石膏の含有量が40質量部未満であった試験番号16の例では、硬化体の強度が低かった。
II型無水石膏の含有量が70質量部を超えていた試験番号21の例では、硬化時間が長く、しかも硬化体の強度が低かった。
界面活性剤としてノニオン系界面活性剤を用いた試験番号23の例では、硬化剤液の均質性が低かった。
界面活性剤の含有量が0.25質量部未満であった試験番号24の例では、硬化剤液の均質性が低かった。
界面活性剤の含有量が0.85質量部を超えていた試験番号29の例では、硬化剤液の均質性が低かった。
As apparent from Table 2, the curing agent is a less hydrated lime maximum particle size 600 .mu.m, and the following type II anhydrous gypsum maximum particle size 90 [mu] m, containing a anionic surfactant, the content of the anhydrite 40 In Examples of Test Nos. 2, 4 to 8, 12 to 15, 17 to 20, 22, 25 to 28 in which the content of the anionic surfactant is 0.25 to 0.85 parts by mass. The performance criteria of curing time, cured body strength, and homogeneity of B liquid were all satisfied at the same time.
On the other hand, in the example of test number 2 using quick lime as limes, the curing time was long.
In the example of test number 3 in which the maximum particle size of slaked lime exceeded 600 μm, the curing time was long.
In the example of test number 9 using 2 water gypsum as the gypsum, the curing time was long.
In the example of test number 10 using hemihydrate gypsum as the gypsum, the homogeneity of the curing agent liquid was low.
In the example of test number 11 in which the maximum particle size of the type II anhydrous gypsum exceeded 90 μm, the curing time was long.
In the example of test number 16 in which the content of type II anhydrous gypsum was less than 40 parts by mass, the strength of the cured product was low.
In the example of test number 21 in which the content of type II anhydrous gypsum exceeded 70 parts by mass, the curing time was long and the strength of the cured product was low.
In the example of test number 23 using a nonionic surfactant as the surfactant, the homogeneity of the curing agent liquid was low.
In the example of test number 24 in which the surfactant content was less than 0.25 parts by mass, the homogeneity of the curing agent liquid was low.
In the example of Test No. 29 in which the surfactant content exceeded 0.85 parts by mass, the homogeneity of the curing agent liquid was low.
Claims (1)
最大粒子径600μm以下の消石灰((a)成分)と、最大粒子径90μm以下のII型無水石膏((b)成分)と、アニオン系界面活性剤((c)成分)とを含有し、
(a)成分100質量部に対して、(b)成分の含有量が40質量部以上70質量部以下、(c)成分の含有量が0.25質量部以上0.85質量部以下であることを特徴とする土質安定化薬液用硬化剤。 A curing agent used for a soil stabilization chemical solution mainly composed of an alkali silicate aqueous solution,
Contains a maximum particle diameter 600μm or less hydrated lime ((a) component), and a maximum particle size 90μm or less of type II anhydrous gypsum ((b) component), an anionic surfactant and ((c) component),
(A) With respect to 100 parts by mass of the component, the content of the (b) component is 40 parts by mass or more and 70 parts by mass or less, and the content of the (c) component is 0.25 parts by mass or more and 0.85 parts by mass or less. A hardener for soil stabilization chemicals characterized by the above.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP2008045945A JP5744373B2 (en) | 2008-02-27 | 2008-02-27 | Soil stabilization chemical |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP2008045945A JP5744373B2 (en) | 2008-02-27 | 2008-02-27 | Soil stabilization chemical |
Publications (3)
Publication Number | Publication Date |
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JP2009203318A JP2009203318A (en) | 2009-09-10 |
JP2009203318A5 true JP2009203318A5 (en) | 2012-02-23 |
JP5744373B2 JP5744373B2 (en) | 2015-07-08 |
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JP2008045945A Active JP5744373B2 (en) | 2008-02-27 | 2008-02-27 | Soil stabilization chemical |
Country Status (1)
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JP (1) | JP5744373B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP6350985B2 (en) * | 2014-07-02 | 2018-07-04 | 俊介 田澤 | Hardener for ground stabilization chemical and ground stabilization chemical |
CN114106844A (en) * | 2021-12-06 | 2022-03-01 | 江苏路邦道昇新材料科技有限公司 | Bio-based liquid soil curing agent with improved strength and preparation method thereof |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5925877A (en) * | 1982-08-04 | 1984-02-09 | Nitto Chem Ind Co Ltd | Grouting method |
JPS5925876A (en) * | 1982-08-04 | 1984-02-09 | Nitto Chem Ind Co Ltd | Grouting method |
JPH0813965B2 (en) * | 1988-03-31 | 1996-02-14 | 積水化学工業株式会社 | Ground injection chemical solution and method for injecting chemical solution into the ground using the chemical solution |
JPH0770562A (en) * | 1993-09-03 | 1995-03-14 | Mitsui Toatsu Chem Inc | Grout for solidifying ground |
JP3460165B2 (en) * | 1995-05-18 | 2003-10-27 | 電気化学工業株式会社 | Cement admixture, cement composition, and injection material using the same |
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