CN100371418C - Soil solidifying agent - Google Patents
Soil solidifying agent Download PDFInfo
- Publication number
- CN100371418C CN100371418C CNB2005100941951A CN200510094195A CN100371418C CN 100371418 C CN100371418 C CN 100371418C CN B2005100941951 A CNB2005100941951 A CN B2005100941951A CN 200510094195 A CN200510094195 A CN 200510094195A CN 100371418 C CN100371418 C CN 100371418C
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Abstract
The present invention relates to a soil solidifying agent which is engineering material for solidifying and stabilizing various kinds of soil. The soil solidifying agent is particularly suitable for solidifying soil bases with low viscosity, such as powdered soil, etc. The soil solidifying agent uses cementing material composed of mineral powder, pulverized coal ash and cement as the main body raw material, and a proper amount of alkaline exciting components, expanded components and surface active agents are prepared, mixed and ground until the Bertrand specific surface area is from 3000m<2>/kg to 5000m<2>/kg, or are respectively ground, mixed and prepared. The soil solidifying agent comprises the components of the proportion by quality: 40 to 60% of mineral admixtures, 15 to 25% of cement, 5 to 15% of alkaline exciting components, 15 to 25% of expanded components and 0.01 to 0.1% of surface active agents. The mineral admixtures are compounded with the mineral powder and the pulverized coal ash according to the quality ratio of 1: 1. The alkaline exciting components are CaO or Ca (OH) 2 or NaOH or Na2 SO4 or Na2 CO3 or water glass. The expanded components are KAl (SO4)2.12H2O or alunite or gypsum. The surface active agents are triethanolamine or calcium lignosulfonate or sodium lignosulfonate.
Description
Technical field
The present invention is the engineering materials that all kinds of soil properties are stablized in a kind of curing, is particularly useful for the solidification treatment on low viscosity soil property bases such as silt, belongs to the technical field that the civil construction material is made.
Background technology
At present, the research of the soil stabilization curing technology of China still is in the state that falls behind relatively, the soil solidification stable material is still based on cement, lime, flyash or the simple mixture of these materials, the single outer a lot of problem that exposed of mixing, mix simply again, be difficult to the requirement of realistic engineering, be mainly reflected in early poor by force, shrink big, easy to crack, stable (water stability, freeze stability, thermostability) and differ from etc., the area of opaqueization, chilternization particularly, these problems will be more outstanding.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of soil-solidified-agent, top layer, the deep soil of various soil conditions is cured stable so that solidified earth reaches desired engineering property, as intensity, water stability and shrinkage etc.
Technical scheme: the present invention is a body material with slag, flyash and cement cementitious material, is equipped with an amount of alkaline excitation component, expansion component and tensio-active agent, and combined grinding is to vigorous formula specific surface area 3000～5000m
2/ kg makes, and also can distinguish grinding mixed preparing in addition again:
Composition quality is formed %
Mineral admixture 40～60
Cement 15～25
Alkaline excitation component 5～15
Expansion component 15～25
Tensio-active agent 0.01～0.1
Wherein, mineral admixture is that slag micropowder (abbreviation breeze), flyash are compound by 1: 1 (mass ratio).
The alkaline excitation component is CaO or Ca (OH)
2, or NaOH or Na
2SO
4, or Na
2CO
3Or water glass, or above mixtures of material,
Expansion component is KAl (SO
4)
212H
2O or alunite or gypsum, or above mixtures of material, tensio-active agent are trolamine or calcium lignin sulphonate or sodium lignosulfonate, or above mixtures of material.
Beneficial effect: technical characterstics such as the present invention has low-dosage, high strength, anti-ly shrinks, water stability is good can be widely used in fields such as road engineering, foundation treatment engineering and Hydraulic and Hydro-Power Engineering.The present invention utilizes industrial residue to be raw material, and certain environment protection significance is arranged.The cost of this solidifying agent is lower, has high cost performance.
Why the present invention has above plurality of advantages, be because it has given full play to the various effects of action of solidify material, specify as follows: various mineral admixtures or its composition, as breeze, flyash, cement etc., given full play to the aquation and the volcanic ash effect of volcano grey matter gelling material; The alkaline excitation component has excited the activity of volcano grey matter gelling material and the activity of soil itself; Expansion component takes place and can a series ofly react, and generation volumetric expansion hydrated product has further been filled the space between soil particle, has significantly improved the Stabilized Soil performance; Tensio-active agent is on the one hand by its absorption on the mineral admixture surface, prevent interparticle coagulation and conglomerations such as breeze, can improve the mill efficiency of mineral admixture, the mineral admixture particle is fully disperseed, the alkaline excitation component can be scattered in simultaneously the surface of mineral admixture full and uniformly, mineral admixture more can fully be activated.More than the particle of various curing components mix will bring into play in the soil and fill the enhanced effect, and the Ca that contains in the solidifying agent or aquation produces
2+To bring into play ion exchange Deng also, this all will further improve the engineering property that solidifies Stabilized Soil.
Embodiment
Example 1
Used main raw material(s) performance is as follows:
Soil is selected silt for use, and its performance index see Table 1.
Table 1
| Density (g/cm 3) | Optimum moisture content | Maximum dry density (g/cm 3) | Plasticity index (I P) | Clay content | Silt content |
| 2.55 | 14.4％ | 1.79 | 6.8％ | 6.8％ | 88.3％ |
Cement is selected sun cement mill, capital P.II.52.5 cement for use, and its grog chemical ingredients and mineralogical composition see Table 2.
Table 2
| Chemical ingredients (%) | Mineralogical composition (%) | |||||||||
| SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO | SO 3 | Loss on ignition | C 3S | C 2S | C 3A | C 4AF |
| 22.12 | 5.41 | 3.34 | 65.67 | 1.31 | 0.53 | 0.20 | 56.51 | 20.76 | 8.69 | 10.16 |
Breeze is the S95 breeze, and its chemical ingredients sees Table 3.
Table 3
| SiO 2 | Al 2O 3 | CaO | MgO | Fe | TiO 2 | MnO | S | K 2O+Na 2O | Cl |
| 27~40 | 5~33 | 30~50 | 1~21 | ＜1 | ＜3 | ＜2 | ＜3 | 1~3 | 0.19~0.26 |
Flyash is low calcium I level flyash, and its chemical ingredients sees Table 4.
Table 4
| SiO 2 | CaO | Al 2O 3 | Fe 2O 3 | MgO | SO 3 | K 2O | Na 2O | Loss on ignition |
| 54.88 | 4.77 | 26.89 | 6.49 | 1.31 | 1.16 | 1.05 | 0.88 | 1.02 |
Test method is as follows:
Unconfined compression strength: test specimen is Φ 5cm * 5cm right cylinder, uses the static(al) compaction moulding when optimum moisture content, and compactness is 95%.Conservation system is that normal curing: curing age 7d supports 6d, immersion 1d for mark; Curing age 28d supports 27d, immersion 1d for mark; Curing in water: curing age 7d supports 3d, immersion 4d for mark; Curing age 28d supports 7d, immersion 21d for mark.
The steady COEFFICIENT K r of intensity water: the ratio of the ultimate compression strength of curing in water test specimen and the ultimate compression strength of normal curing test specimen.
Linear shrinkage: test specimen is Φ 5cm * 10cm right cylinder, uses the static(al) compaction moulding when optimum moisture content, and compactness is 95%.Conservation system be preceding 7 days for normal curing, 7 days is the fixed temperature and humidity maintenance later on.Certain age period linear deformation=(the test specimen length-test specimen in this length of time is just long)/test specimen is length * 10 just
6(μ ε)
Table 5 has been listed 8 groups of soil-solidified-agent proportionings, and the volume of solidifying agent all accounts for 5% of silt.For the ease of relatively, also carried out the test of two groups of reference groups, the C1 group mixes unslaked lime (CaO) and flyash is compound by (1: 2), and volume is 5%; The C2 group is mixed unslaked lime (CaO), and volume is 12%.
Table 5
| Group number | Cement | Breeze | Flyash | CaO | Na 2CO 3 | Alunite | Gypsum | Wood calcium | Na 2SO 4 | Water glass |
| 1 | 20 | 52.5 | 10 | 2.5 | 14.9 | 0.1 | ||||
| 2 | 20.5 | 53.8 | 10.3 | 15.3 | 0.1 | |||||
| 3 | 19.1 | 50 | 9.6 | 14.2 | 7 | 0.1 | ||||
| 4 | 20.5 | 53.8 | 10.3 | 15.3 | 0.1 | |||||
| 5 | 20.5 | 26.9 | 26.9 | 10.3 | 15.3 | 0.1 | ||||
| 6 | 20 | 52.5 | 10 | 14.9 | 0.1 | 2.5 | ||||
| 7 | 20 | 50 | 10 | 14.9 | 0.1 | 5 | ||||
| 8 | 20 | 24 | 24 | 9.5 | 14.9 | 5 | 0.1 | 2.5 |
The steady coefficient of unconfined compression strength, water of nine groups of tests sees that as table 6 contraction sees Table 7.
Table 6
Table 7
With this hardener formula of testing the 8th group is example, in silt, mix the curing Stabilized Soil of 5% this soil-solidified-agent, unconfined compression strength can reach 1.43MPa in 7 days, and volume to be 12% strength of lime soil only be 0.41MPa, (flyash: solidified earth intensity lime=2: 1) is 0.39MPa to mix 5% two-ash soil.Simultaneously, mix 35 days of Stabilized Soil of 5% soil-solidified-agent shrink than 12% limestone soil reduced 49%, reduced 22% than 5% two-ash soil.
Claims (1)
1. a soil-solidified-agent is characterized in that the gelling material that this solidifying agent is formed with breeze, flyash and cement is a body material, is equipped with an amount of alkaline excitation component, expansion component and tensio-active agent, and combined grinding is to vigorous formula specific surface area 3000～5000m
2/ kg makes, or grinding mixed preparing in addition more respectively, and its component is:
Composition quality is formed %
Mineral admixture 40～60
Cement 15～25
Alkaline excitation component 5～15
Expansion component 15～25
Tensio-active agent 0.01～0.1
Mineral admixture is that breeze, flyash are compound by 1: 1 quality,
The alkaline excitation component is CaO or Ca (OH)
2, or NaOH or Na
2SO
4, or Na
2CO
3Or water glass, or above mixtures of material,
Expansion component is KAl (SO
4)
212H
2O or alunite or gypsum, or above mixtures of material,
Tensio-active agent is trolamine or calcium lignin sulphonate or sodium lignosulfonate, or above mixtures of material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100941951A CN100371418C (en) | 2005-09-02 | 2005-09-02 | Soil solidifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100941951A CN100371418C (en) | 2005-09-02 | 2005-09-02 | Soil solidifying agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1730836A CN1730836A (en) | 2006-02-08 |
| CN100371418C true CN100371418C (en) | 2008-02-27 |
Family
ID=35963251
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100941951A Expired - Fee Related CN100371418C (en) | 2005-09-02 | 2005-09-02 | Soil solidifying agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100371418C (en) |
Cited By (1)
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|---|---|---|---|---|
| WO2020092858A1 (en) * | 2018-11-03 | 2020-05-07 | Cemalt LLC | Additives for geopolymer cements |
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-
2005
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6018570A (en) * | 1983-07-11 | 1985-01-30 | Chichibu Cement Co Ltd | Solidifying material for improving soft ground |
| CN1239085A (en) * | 1998-06-12 | 1999-12-22 | 武汉水利电力大学 | Soil solidifying agent |
| CN1339551A (en) * | 2001-08-28 | 2002-03-13 | 刘惠忠 | Soil firming agent and its producing method |
| CN1562851A (en) * | 2004-03-16 | 2005-01-12 | 徐尔昌 | Earth cementation agent in use for roadway construction |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020092858A1 (en) * | 2018-11-03 | 2020-05-07 | Cemalt LLC | Additives for geopolymer cements |
| AU2019374104B2 (en) * | 2018-11-03 | 2021-10-21 | Cemalt LLC | Additives for geopolymer cements |
| US11168028B2 (en) | 2018-11-03 | 2021-11-09 | Cemalt LLC | Additives for geopolymer cements |
| JP2022506806A (en) * | 2018-11-03 | 2022-01-17 | セモルト エルエルシー | Additives for geopolymer cement |
| JP7122468B2 (en) | 2018-11-03 | 2022-08-19 | セモルト エルエルシー | Additives for Geopolymer Cement |
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| Publication number | Publication date |
|---|---|
| CN1730836A (en) | 2006-02-08 |
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