CN1746432A - Soil curing agent of road - Google Patents
Soil curing agent of road Download PDFInfo
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- CN1746432A CN1746432A CNA2005101127157A CN200510112715A CN1746432A CN 1746432 A CN1746432 A CN 1746432A CN A2005101127157 A CNA2005101127157 A CN A2005101127157A CN 200510112715 A CN200510112715 A CN 200510112715A CN 1746432 A CN1746432 A CN 1746432A
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- slag
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
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Abstract
A firming agent contains A) slag 43wt%-73wt%; B) alkali excitant 19w%-49wt%; C) halogenic excitant 1wt%-8wt%; D) flyash 7wt%-25wt%. Unconfined compressive strength for 7d of gusset soil with same percent firming agent is much higher than with same percent lime and equal with gusset soil with 32.5 Portland cement.
Description
Technical field
The present invention relates to a kind of soil-solidified-agent, particularly a kind of soil-solidified-agent that utilizes industrial waste that is used for road construction.
Background technology
The curing compound compacted soil is to adopt the certain physics chemical method to make the physical and mechanical property of soil adapt to the technology of engineering demand.In recent years, the more inorganic material compacted soil of domestic application mainly contained Lime Stabilization soil, soil-cement and two ashes (being lime and flyash) compacted soil.
Curing compound cost based on lime and two ashes is lower, yet has more shortcoming in application.For example the solidified earth early strength is not high, globality is poor, and it is long to form certain intensity time, need more than 7 days, and the adjustable extent of intensity is little, and resistance to compression and tensile strength are low etc.In addition, the water stability of lime and two ashes is with to freeze stability relative relatively poor, but the construction period is shorter.
As curing compound, the strength ratio lime of solidified earth and two grey solidified earth improve a lot with cement.But,, increased the cost of engineering because the price of cement is higher.
Therefore, the research and development of the inorganic solidification agent of lower, the excellent performance of cost, easy construction just become the problem that domestic correlation engineering technician pays close attention to.
In recent years, along with the development of green construction material, this industrial waste of slag begins to be developed as building material.Slag is the waste residue of iron and steel smelting.It is treated as granular solid matter through water or air quenching, is called granulated blast-furnace slag, and its main chemical compositions is SiO
2, Al
2O
3, CaO, MgO etc.Slag behind the shrend chilling, vitreum content is many, but particle is thicker, with water chemical reaction does not take place.But after grinding, in the presence of exciting agent, the SiO in the slag
2And Al
2O
3Composition and water reaction form gelatinous mass, and have hydraulically active.The output of the annual water-granulated slag of China is 6,000 ten thousand tons, and is cheap.Domestic the exploitation with the slag is the slag cements of primary raw material.Yet up to the present, also not developing with the slag is main component, Gu soil is effective, the good endurance of solidified earth, and cheap road soil-solidified-agent.
Summary of the invention
The solid native weak effect, the intensity that exist at the lime of present employing or two-ash soil soil curing agent are low, and with cement as curing compound cost problem of higher, the object of the present invention is to provide a kind of novel curing compound.
The invention provides a kind of soil-solidified-agent, comprise A) slag of 43wt%～73wt%; B) the bases exciting agent of 19wt%～49wt%; And C) the salt exciting agent of 1wt%～8wt%.
Wherein slag is that specific area is 400～500m
2The superfine powder of/kg.
The bases exciting agent that this soil-solidified-agent adopted can be at least a material that is selected from following group: hydrated lime, clinker, NaOH or potassium hydroxide.
The salt exciting agent that this soil-solidified-agent adopted is at least a material that is selected from following group: calcium sulfate, sodium sulphate, sodium carbonate or potash.
The content of slag is preferably 55wt%～65wt%; The content of bases exciting agent is preferably 19wt%～30wt%; Be preferably 1.5wt%～5.0wt% with the content of salt exciting agent.
Except that said components, soil-solidified-agent of the present invention also can further comprise D) flyash of 7wt%～25wt%.Preferably, the content of flyash is 8wt%～15wt%.
Curing compound of the present invention is with industrial waste---and slag is a primary raw material, is used for soil fixation by other inorganic material of admixture, greatly reduces the cost of curing compound.And under equal addition, 7 days unconfined compression strengths of this curing compound compacted soil are suitable with soil-cement, obviously are better than adopting the compacted soil of lime.And this curing compound is cheap, only is about 1/2nd of cement price.This curing compound is not only with low cost, consolidation effect is good, economize on the use of funds for highway construction, and has utilized industrial waste, has saved resource.In addition, the main composition material of curing compound of the present invention is inorganic matter, and is nontoxic, harmless, pollution-free, all is safe to animal and plant, also can not pollute the soil and the environment on construction ground, meets requirement on environmental protection fully.This curing compound shows slightly alkalescence, but does not have corrosivity, does not therefore have specific (special) requirements in packing, transportation and storage process, can preserve at normal temperatures usually, and is very convenient.
The specific embodiment
Describe curing compound of the present invention in detail below in conjunction with the specific embodiment.
The invention provides a kind of soil-solidified-agent, comprising: the A) slag of 43wt%～73wt%; B) the bases exciting agent of 19wt%～49wt%; And C) the salt exciting agent of 1wt%～8wt%.
The main chemical compositions of slag is SiO
2, Al
2O
3, CaO, MgO etc., itself not with water generation chemical reaction.After adding a small amount of suitable exciting agent, the SiO in the slag
2, Al
2O
3In the presence of water, can react the formation gum material Deng composition, and have the hydraulicity.Be 400～500m particularly when slag grinds to form specific area
2During the superfine powder of/kg, its hydraulically active can be brought into play more fully.
Based on the gross weight of curing compound, the percentage by weight of slag is 43wt%～73wt% in the curing compound of the present invention, is preferably 55wt%～65wt%.If the percentage by weight of slag is too small, then under certain volume condition, 7 days unconfined compression strengths of the compacted soil of employing curing compound of the present invention can not satisfy the requirement of " highway road surface construction technique normalizing " (JTJ 034-2000).For example, when the content of slag in the curing compound is 30wt%, added the compacted soil of 5% curing compound, unconfined compression strength had only 0.7MPa in 7 days, and the compacted soil unconfined compression strength same period of the desired employing cement of above-mentioned standard will be more than 1.5MPa.On the other hand, if fine slag contents is too high, though can further reduce the cost of curing compound, the intensity of compacted soil descends on the contrary.This is because fine slag contents increases the content of exciting agent is reduced relatively, and the silicon in the slag, aluminium component can not fully react and form enough gum materials, have therefore caused the decline of intensity.In addition, because the slag fineness is less, cause very easily that when its consumption is excessive compacted soil produces drying shrinkage and increases or problem easy to crack.
The material that can impel slag to present gelling ability is called exciting agent.Exciting agent divides two kinds of bases exciting agent and salt exciting agents.
Bases exciting agent commonly used for example has hydrated lime, clinker, NaOH or potassium hydroxide etc.Various bases exciting agents commonly used all can be used as the exciting agent of curing compound of the present invention.From the angle of economy, can preferably adopt the lower product of price according to the market price at that time.Wherein, because the hydrated lime aboundresources, the present market price is relatively low, therefore in this application as preferred embodiment.
SiO in the slag
2, Al
2O
3The reaction mechanism that composition forms the gelling thing has two kinds.A kind of mechanism is under alkali condition, SiO
2, Al
2O
3From slag, be dissolved out, enter the aqueous solution, then be dissolved in the aqueous solution in cation combine, form the gum material of silicic acid base, aluminic acid base etc.Because in this elder generation's dissolving, reppd process, dissolving is a transient process, so this process is called " transition dissolving " process again by the present invention.Another kind of mechanism is the Surface Physical chemical reaction, and its qualitative description is as follows:
Wherein m and n are respectively natural number; X represents metal cation.
Based on the gross weight of curing compound, the percentage by weight that is used for the bases exciting agent of curing compound of the present invention is 19wt%～49wt%, is preferably 19wt%～30wt%.If if bases exciting agent consumption is too small, then the alkalescence of compacted soil is not high, enough basicity is provided can not for the slag aquation, easily influences the intensity of compacted soil; On the contrary,, but can not further improve the intensity of compacted soil after reaching a certain limit, the cost of curing compound is increased if the consumption of bases exciting agent continues to increase.
Described salt exciting agent has calcium sulfate, sodium sulphate, sodium carbonate or potash etc.Salt exciting agent and the reaction of bases exciting agent can generate soluble-salt and highly basic.For example: Na
2SO
4In SO
4 2-And Na
+With the Ca in the hydrated lime
2+And OH
-Respectively in conjunction with generating CaSO
4And NaOH.Highly basic such as NaOH can improve the pH value of liquid phase, accelerate silicon in the slag, aluminum material dissolving, quicken the pozzolanic reaction process, improve the content of reaction product; Na
2SO
4, CaSO
4Deng filling the compacted soil internal void, increase the compactness of compacted soil, thereby further improve the intensity of compacted soil with the pozzolanic reaction product---the calcium aluminate reaction generates for example calcium sulphoaluminate gum material.
Above-mentioned salt exciting agent all can be used as the exciting agent of curing compound of the present invention.Wherein, calcium sulfate, sodium sulphate, sodium carbonate are preferred for the present invention.Can select wherein to have the salt exciting agent of price advantage according to the market price at that time, further to reduce cost.In the embodiments of the invention, particularly preferably be sodium sulphate, because it can not only effectively improve the intensity of solidified earth, and the present market price is lower, helps further reducing the cost of curing compound of the present invention.
Based on the gross weight of curing compound, the percentage by weight that is used for the salt exciting agent of curing compound of the present invention is 1wt%～8wt%, is preferably 1.5wt%～5.0wt%.If the consumption of salt exciting agent is too small, the intensity of curing compound compacted soil will obviously descend.If the consumption of salt exciting agent is excessive, not only can increase the cost of curing compound, and after surpassing certain limit, the ratio between the raising of compacted soil intensity and the amount that is increased descends, consider that from the angle of economy this is worthless.
Except that above-mentioned slag, bases exciting agent and salt exciting agent, can further comprise flyash according to curing compound of the present invention.
Flyash also is a kind of industrial waste, be behind the coal dust firing of steam power station from flue gas collected powder.Its particle diameter is about 1～50 μ m, and main oxides is SiO
2, Al
2O
3And Fe
2O
3, the summation of three's weight generally surpasses 70%.Under the condition that alkali-activator exists, can generate the gum material of silicic acid base, aluminic acid base, promptly take place " pozzolanic reaction ".Another effect of flyash---" micro aggregate effect " can increase the quantity of the total cementitious material after the curing compound aquation, helps the stable of the less or particle diameter unitary class soil of particulate.Add a certain amount of flyash and can make full use of the compactness that its " micro aggregate effect " increases compacted soil.And with slag reaction back bases exciting agent have remaining, thereby can utilize the pozzolan effect of flyash, make the SiO in bases exciting agent and the flyash
2, Al
2O
3Deng reacting, increase the quantity of cementitious material.But the SiO in the flyash
2, Al
2O
3Under general condition activity excitation is slower, and the generation of cementitious material can improve the intensity in compacted soil later stage mainly in the later stage so add flyash, further consolidates the pavement performance of compacted soil.But too much flyash can cause the alkalescence of compacted soil to reduce, and is unfavorable for the early hydration of slag, and the compacted soil early strength is produced certain influence.Therefore, in the curing compound of the present invention, based on the gross weight of curing compound, the amount of flyash is 7wt%～25wt%.Preferably, the content of flyash is 8wt%～15wt%.
Further specify road of the present invention soil-solidified-agent below by embodiment.
Embodiment:
The preparation of curing compound
Embodiment 1:
With ball mill original state shrend chilling slag (available from gantry, Shaanxi iron and steel works) being worn into specific area is 439m
2The superfine powder of/kg, density are 2.83g/cm
3, its size distribution is measured with laser particle size analyzer (Mastersizer 2000, Britain Ma Erwen Instr Ltd.), and calculating its average grain diameter is 14.120 μ m.Hydrated lime (available from Jingyang, the Shaanxi Lime Factory) sieve of 2.36mm.The slag superfine powder of 68.57kg and the hydrated lime in powder that sieves of 28.57kg are mixed, and add the III class industrial sulphuric acid sodium (available from Shaanxi treasuredization chemical industry Co., Ltd) of 2.86kg, stir, promptly obtain soil-solidified-agent of the present invention.Among this embodiment, the weight ratio of slag, hydrated lime and sodium sulphate is 12: 5: 0.5.
Embodiment 2～9:
According to the weight ratio of slag, hydrated lime and sodium sulphate in the table 1, adopt the preparation method identical with embodiment 1, prepare the soil-solidified-agent of embodiment 2～9 respectively.
Embodiment 10～20:
In embodiment 10～20, adopt the preparation method identical, just further interpolation flyash (available from the Weihe River, Shaanxi power plant) in slag, hydrated lime and sodium sulphate with embodiment 1.The weight ratio of each raw material is as shown in table 1, and these raw materials are mixed together, and stirs, and promptly obtains the soil-solidified-agent of the embodiment of the invention 10～20.
| Sequence number | Slag | Hydrated lime | Sodium sulphate | Flyash |
| Embodiment 1 | 12 | 5 | 0.5 | - |
| Embodiment 2 | 9 | 5 | 0.5 | - |
| Embodiment 3 | 15 | 5 | 1 | - |
| Embodiment 4 | 12 | 5 | 1 | - |
| Embodiment 5 | 9 | 5 | 1 | - |
| Embodiment 6 | 20 | 10 | 0.5 | - |
| Embodiment 7 | 15 | 10 | 0.5 | - |
| Embodiment 8 | 20 | 10 | 1 | - |
| Embodiment 9 | 15 | 10 | 1 | - |
| Embodiment 10 | 15 | 5 | 2.5 | 0.5 |
| Embodiment 11 | 12 | 5 | 2.5 | 0.5 |
| Embodiment 12 | 9 | 5 | 2.5 | 0.5 |
| Embodiment 13 | 15 | 5 | 5 | 1 |
| Embodiment 14 | 12 | 5 | 5 | 1 |
| Embodiment 15 | 9 | 5 | 5 | 1 |
| Embodiment 16 | 20 | 10 | 2.5 | 0.5 |
| Embodiment 17 | 15 | 10 | 2.5 | 0.5 |
| Embodiment 18 | 10 | 10 | 2.5 | 0.5 |
| Embodiment 19 | 20 | 10 | 2.5 | 1 |
| Embodiment 20 | 15 | 10 | 2.5 | 1 |
Table 1
Embodiment 21～22 and Comparative Examples 1
In embodiment 21,22 and Comparative Examples 1, the preparation method of curing compound is identical with embodiment 1, and difference is to replace sodium sulphate with calcium sulfate in embodiment 21; In embodiment 22, replace sodium sulphate with sodium carbonate; Replace sodium sulphate with calcium chloride in Comparative Examples 1, raw materials used weight ratio is as shown in table 2 below.Wherein calcium sulfate, sodium carbonate and calcium chloride are all available from Shaanxi treasuredization chemical industry Co., Ltd.
| Sequence number | Slag | Hydrated lime | The salt exciting agent | Flyash |
| Embodiment 21 | 20 | 10 | 2.5 | 0.5 |
| Embodiment 22 | 20 | 10 | 2.5 | 0.5 |
| Comparative Examples 1 | 20 | 10 | 2.5 | 0.5 |
Table 2
Comparative Examples 2 and 3
Adopt at present the domestic material that is usually used in road construction as curing compound, wherein Comparative Examples 2 with Portland cement 32.5 as curing compound; Comparative Examples 3 with hydrated lime as curing compound.
The test implementation example
Curing compound with preparation in above embodiment 1～22 and the Comparative Examples 1～3 carries out soil fixation as follows, and compacted soil is carried out the mensuration of 7 days unconfined compression strengths.
The soil that is used to reinforce is near the loess the Xi'an, uses the circular hole sieve of 2.36mm before using.At first (JTJ057-94), determine optimum moisture content and maximum dry density by compaction test according to " highway engineering stabilized with inorganic binder material test rules ".During construction, the natural moisture content of considering soil is often to change, thus in mixing and stirring to control, to guarantee that water content can be not too high in the material soil a little less than the water supply volume of 1～2 percentage point of optimum moisture content.The curing compound of each embodiment is added to respectively in the soil to be reinforced in certain proportion, according to the engineering construction method construction of the curing compound compacted soil of routine.Then, (JTJ057-94) measure 7 days unconfined compression strengths of compacted soil respectively according to " highway engineering stabilized with inorganic binder material test rules ".
The curing compound of embodiment 1～9 adds in the 100 weight portion soil with the amount of 10 weight portions respectively.The result of the 7 days unconfined compression strengths of compacted soil that record is as shown in table 3.
| Sequence number | 7 days unconfined compression strengths (MPa) |
| Embodiment 1 | 2.51 |
| Embodiment 2 | 2.37 |
| Embodiment 3 | 2.31 |
| Embodiment 4 | 2.70 |
| Embodiment 5 | 2.60 |
| Embodiment 6 | 2.36 |
| Embodiment 7 | 2.32 |
| Embodiment 8 | 2.44 |
| Embodiment 9 | 2.40 |
Table 3
The curing compound of embodiment 10～20 adds in the soil of 100 weight portions with 10 weight portions and 15 weight portions respectively, and measures 7 days unconfined compression strengths of compacted soil according to the method described above.In addition, according to present domestic cost of material, calculate the curing compound price per ton of embodiment 10～20.Wherein slag superfine powder price is 90 yuan/ton, and the price of hydrated lime in powder is 188 yuan/ton, and the price of industrial sulphuric acid sodium is 480 yuan/ton, and the price of flyash is 120 yuan/ton.The result is as shown in table 4.
| Sequence number | Price (unit/ton) | 7 days unconfined compression strengths (MPa) | |
| 10 weight portions | 15 weight portions | ||
| Embodiment 10 | 123 | 2.18 | 3.14 |
| Embodiment 11 | 129 | 2.47 | 3.16 |
| Embodiment 12 | 135 | 2.33 | 3.08 |
| Embodiment 13 | 129 | 2.18 | 3.34 |
| Embodiment 14 | 135 | 2.56 | 3.26 |
| Embodiment 15 | 142 | 2.45 | 3.56 |
| Embodiment 16 | 127 | 2.31 | 3.59 |
| Embodiment 17 | 135 | 2.28 | 3.51 |
| Embodiment 18 | 144 | 2.28 | 3.07 |
| Embodiment 19 | 133 | 2.42 | 3.26 |
| Embodiment 20 | 141 | 2.37 | 3.19 |
Table 4
As seen from the above table, the curing compound of the embodiment of the invention 10～20 price per ton is about 130 yuan.If the addition with 10 weight portions is constructed, the cost of the required curing compound of soil per ton is about 13 yuan.Wherein, the cost of the curing compound of embodiment 10 has only 12.3 yuan, and the curing compound of this embodiment also has desirable compressive strength.Compare with table 3, can find that 7 days unconfined compression strengths of the curing compound compacted soil of embodiment 10～20 slightly reduce than 7 days unconfined compression strengths of the curing compound compacted soil of embodiment 1～9.This causes because of having added a certain amount of flyash.Its reason describes in detail in front.Though the adding of flyash descends the early strength of compacted soil to some extent, can improve the intensity (data not shown goes out) in compacted soil later stage, help improving the quality of engineering.
Embodiment 16 is identical with the material rate of the curing compound of embodiment 21,22 and Comparative Examples 1, is the salt exciting agent difference that is adopted.With the curing compound of embodiment 16,21,22 and Comparative Examples 1 also after the same method, add to 10 weight portions in the soil of 100 weight portions, measure 7 days unconfined compression strengths.The result is as shown in table 5 below.
| Sequence number | 7 days unconfined compression strengths (MPa) |
| Embodiment 16 | 2.31 |
| Embodiment 21 | 1.85 |
| Embodiment 22 | 2.10 |
| Comparative Examples 1 | 1.25 |
Table 5
By table 5 as seen, compare with other salt curing compound, sodium sulphate has better effect.Use sodium carbonate and calcium sulfate also can make compacted soil reach higher intensity.The effect of calcium chloride is then relatively poor, can not satisfy the requirement of engineering.
In order to further specify the characteristics of curing compound of the present invention on price and functional performance, 7 days unconfined compression strengths of the hydrated lime compacted soil of the Portland cement 32.5 of the curing compound of embodiment 10 and Comparative Examples 2 and Comparative Examples 3 are compared.(JTJ057-94) measure soil respectively according to " highway engineering stabilized with inorganic binder material test rules " based on 100 weight portions, when the addition of curing compound is 5,10 and 15 weight portions, the optimum moisture content of compacted soil, maximum dry density and 7 days unconfined compression strengths.Measurement result is as shown in table 6 below.
| Sequence number | Addition | Optimum moisture content (%) | Maximum dry density (g/cm 3) | 7 days unconfined compression strengths (MPa) |
| Embodiment 10 | 5 weight portions | 17.23 | 1.79 | 1.73 |
| 10 weight portions | 17.56 | 1.77 | 2.18 | |
| 15 weight portions | 17.70 | 1.72 | 3.14 | |
| Comparative Examples 2 | 5 weight portions | 15.01 | 1.88 | 1.89 |
| 10 weight portions | 16.58 | 1.85 | 2.35 | |
| 15 weight portions | 17.16 | 1.80 | 3.20 | |
| Comparative Examples 3 | 5 weight portions | 15.42 | 1.68 | 0.78 |
| 10 weight portions | 20.11 | 1.62 | 0.91 | |
| 15 weight portions | 22.30 | 1.59 | 1.14 |
Table 6
The ratio of performance to price of curing compound, cement 32.5 and the lime of the embodiment of the invention 10 under the 10 weight portion additions in the last table 6 is summarized as follows table 7.Wherein, the price of 32.5 grades of Portland cements is 260 yuan/ton; The price of hydrated lime is 188 yuan/ton.Every value of hydrated lime is made as 1, every value of curing compound of the present invention and cement is distinguished by comparison.
| Curing compound | 7 days unconfined compression strengths (MPa) | Compressive strength index ratio | Identical volume cost (unit) | Identical volume cost ratio | The ratio of performance to price |
| Hydrated lime | 0.91 | 1 | 18.80 | 1 | 1 |
| Cement 32.5 | 2.35 | 2.58 | 26.00 | 1.38 | 1.87 |
| Embodiment 10 | 2.18 | 2.40 | 12.30 | 0.65 | 3.69 |
Table 7
By table 6 and table 7 as seen, road of the present invention is cheap with soil-solidified-agent, and per ton only is 1/2nd of cement price; Intensity under the equal addition obviously is better than lime, and suitable with cement, has very high cost performance.Can in road foundation or base layer construction, replace cement fully, under the condition that reaches equal engine request quality, for engineering construction is economized on the use of funds.
Claims (11)
1, a kind of soil-solidified-agent comprises:
A) slag of 43wt%～73wt%;
B) the bases exciting agent of 19wt%～49wt%; With
C) the salt exciting agent of 1wt%～8wt%.
2, soil-solidified-agent according to claim 1, wherein the specific area of slag is 400～500m
2/ kg.
3, soil-solidified-agent according to claim 1, wherein the bases exciting agent is selected from hydrated lime, clinker, NaOH or potassium hydroxide.
4, soil-solidified-agent according to claim 3, wherein the bases exciting agent is a hydrated lime.
5, soil-solidified-agent according to claim 1, wherein the salt exciting agent is selected from calcium sulfate, sodium sulphate, sodium carbonate or potash.
6, soil-solidified-agent according to claim 5, wherein the salt exciting agent is a sodium sulphate.
7, soil-solidified-agent according to claim 1, wherein the content of slag is 55wt%～65wt%.
8, soil-solidified-agent according to claim 1, wherein the content of bases exciting agent is 19wt%～30wt%.
9, soil-solidified-agent according to claim 1, wherein the content of salt exciting agent is 1.5wt%～5.0wt%.
10, according to any described soil-solidified-agent of claim 1～9, further comprise:
D) flyash of 7wt%～25wt%.
11, soil-solidified-agent according to claim 10, the content of wherein said flyash are 8wt%～15wt%.
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| CN1278519A (en) * | 1999-06-18 | 2001-01-03 | 上海市建筑科学研究院 | Cement for foundation treatment and its preparation |
| CN1207365C (en) * | 2002-03-04 | 2005-06-22 | 北京天筑杰特种建筑材料技术开发有限公司 | Soil firming agent |
| CN1257957C (en) * | 2004-11-15 | 2006-05-31 | 西北农林科技大学 | Novel soil stabilizer |
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2005
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| CN103373843A (en) * | 2013-07-01 | 2013-10-30 | 河海大学 | Slag-based solidified soil and preparation method thereof |
| CN103723974A (en) * | 2013-12-19 | 2014-04-16 | 江苏苏港新材料科技有限公司 | Preparation technology of coastal soil solidification agent comprising industrial residue |
| CN103992072A (en) * | 2014-05-30 | 2014-08-20 | 镇江建科建设科技有限公司 | Coal ash reinforced curing agent and preparation method thereof |
| CN104119043A (en) * | 2014-07-24 | 2014-10-29 | 新奥生态建材有限公司 | Road paving material taking building waste as main material and preparation method of road paving material |
| CN106350077A (en) * | 2016-08-30 | 2017-01-25 | 南京农业大学 | Preparation method of carbon-based improver for reducing cadmium absorption of rice grains |
| CN106350077B (en) * | 2016-08-30 | 2019-04-23 | 南京农业大学 | A kind of preparation method of the charcoal based modifier for reducing rice grain Cd uptake |
| CN108218264A (en) * | 2018-01-17 | 2018-06-29 | 福州大学 | It is a kind of using lime-sodium carbonate as the one-component alkali-activated carbonatite cementitious material of exciting agent |
| CN108218264B (en) * | 2018-01-17 | 2019-12-13 | 福州大学 | Single-component alkali-activated cementing material taking lime-sodium carbonate as activator |
| CN112250412A (en) * | 2020-11-02 | 2021-01-22 | 中国建筑第五工程局有限公司 | Method for curing high-viscosity residue soil to be used as backfill material |
| CN112851267A (en) * | 2021-03-04 | 2021-05-28 | 江苏洋河新城新材料有限责任公司 | High-performance nickel slag-based composite soil curing material |
| CN113136213A (en) * | 2021-04-22 | 2021-07-20 | 河南省交通规划设计研究院股份有限公司 | Soil stabilizer prepared from bauxite tailings |
| RU2800910C1 (en) * | 2022-11-08 | 2023-07-31 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Уфимский государственный нефтяной технический университет" | Method of fixing weak water-saturated loess and clay soils |
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