CN101475810A - Environment-friendly soil curing agent - Google Patents
Environment-friendly soil curing agent Download PDFInfo
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- CN101475810A CN101475810A CNA2008102299065A CN200810229906A CN101475810A CN 101475810 A CN101475810 A CN 101475810A CN A2008102299065 A CNA2008102299065 A CN A2008102299065A CN 200810229906 A CN200810229906 A CN 200810229906A CN 101475810 A CN101475810 A CN 101475810A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to an environment-friendly soil curing agent, which belongs to the technical field of town planning and building engineering. The environment-friendly soil curing agent aims to solve the problems that at present, the soil curing agent used in the current municipal infrastructure construction is universally alkalic, can salinize and alkalize the peripheral soil, pollute surface water and underground water and influence the ecological environment, and has single function, low strength, poorer impermeability and durability and the like. The environment-friendly soil curing agent is prepared by a compound technical formulation which consists of four or five of the six chemical raw materials of tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetra calcium aluminoferrite, slag and calcium carbonate, and at least two of the five chemical raw materials of calcium sulfate, aluminum sulfate, sodium sulfate, calcium lignosulphonate and sodium lignosulphonate. The environment-friendly soil curing agent has small usage and good environment protection effect, and the main raw materials are nontoxic, harmless and pollution-free, and are safe and reliable to animals and plants. The environment-friendly soil curing agent uses local materials, has low construction cost, is applicable to roadbed strengthening and the treatment on municipal road structural layers and soft soil foundations, and is suitable for mechanized construction operations.
Description
A kind of environment protection type soil solidifying agent, the curing soil effect is remarkable, and the scope of application is extensive, and the preparation method is simple and direct, compliance with environmental protection requirements.
One, technical field
Belong to city's construction work category of having stable political situation, be the fine chemical technology field.
Two, background technology
1, to inventing the understanding of " a kind of environment protection type soil solidifying agent "
When soil-solidified-agent and after containing the mixing with soil of certain moisture, a series of physical-chemical reactions promptly take place.At first, the acicular crystals of crystal water are rich in a large amount of formation in soil, intert to form the intensity skeleton between the soil particle hole.Secondly, the silicates hydrate makes curing system further closely knit among being filled in the intensity skeleton.At last, soil-solidified-agent and part soil particle carry out chemical reaction under the effect of exciting agent, make compacted soil have irreversible favorable durability.The research of resistance of soil factor is analyzed from solidifying angle, and the size of soil solidification degree and supporting capacity is directly proportional, and depends mainly on the intensity of soil, and the strength problem of research soil is exactly in fact the slip resistance problem of research soil.
We call the slip resistance of soil to soil to the limit resistivity of shear fracture, because the connection between the grogs is much smaller than the intensity of grogs itself, so under external force, the destruction of soil mainly is owing to generation relative shear displacement between the grogs is caused.So from solidifying angle analysis, the strength problem of research soil is exactly the slip resistance problem that will study soil, this slip resistance but with volume of traffic load-carrying, soil class, weather, hydrologic conditions etc. have confidential relation.
Caused shearing stress T equals the slip resistance T that soil is had on the arbitrary face of external force certain point in by soil
fThe time, this point is in the destructive criticality, is called state of limit equilibrium, if T＜T
f, then this point is in elastic state of equilibrium in the soil, as T〉and T
f, then this point is broken.The state of limit equilibrium of determining soil is the research road surface, the problem of the necessary solution of the stability of roadbed and structure institute.Soil-solidified-agent is exactly by improving the slip resistance of soil, improving the purpose of the pavement performance of soil.
Constitute the factor of the slip resistance of soil, mainly contain snap-in force between skin friction force between the grogs and the grogs, be referred to as friction resistance, and by formed cohesive force such as combination water between the grogs and cementing matters, the factor of the slip resistance of formation coarse is based on friction resistance, and on the particulate, especially pure clay is then based on cohesive force.
Cohesive force can be divided three kinds
First kind of original cohesion, it mainly is because pellicular water between grogs, the electric molecular attraction effect between the adjacent grogs of being subjected to forms, so its intensity diminishes with the increase of grogs spacing.The original cohesion of soil is relevant with density with the composition of soil, and concerning the soil of certain ingredients, the intensity of original cohesion depends primarily on the density and the water content of soil.In the sedimentary starting stage of soil layer, just begin to have original cohesion between grogs.In the densification process, grogs is near being in pellicular water attenuation between the grogs, its adhesive tape enhancing, and original cohesion is just thereby increase.Soil this power when expanding will reduce, and after the grogs spacing was greater than grogs electricity molecular attraction steam circle, this power just disappeared.Thereby grogs pellicular water variation in thickness changes the grogs spacing, the original cohesion of soil also changes thereupon to some extent, and when the original structure of cohesive soil was destroyed, this power will be weakened, but original density and water content as soil are recovered to some extent, and this power also can be with strengthening.
Such as, if sand or clay directly are used as the road surface.
1., under wet condition, because capillary stress makes sand that suitable cohesion be arranged, good internal friction angle is arranged after rolling and have enough bearing capacities, yet under the exsiccant weather condition, his particle is isolating, bearing capacity at whole road surfaces soil is almost nil, and this moment, it can not bearing load.
2., under the exsiccant condition, clay produces very big cohesive force, has advantages of high bearing capacity, however along with the increase of water content, the bearing capacity of clay will reduce rapidly.So under the weather condition of humidity because the rubbing effect of moisture and wheel, its as a result clay will become rare soft mud.Later when becoming dry once again, clay will intensity be arranged hardening.So sand and clay all are unsettled, can not build permanent dirt road separately.But mix a kind of new material of composition as if sand being layered on the clay or sand and clay, mud knot gravel, under sufficient compacting situation, combined action owing to favourable composition characteristic in two kinds of materials, solve the problem of cohesive force preferably, so both supporting capacitys all are improved, can provide the current of round-the-clock medium traffic, the simplest classic soil solidification form that Here it is.
Second kind solidifies cohesive force, and react with generates water-fast gum material behind the chance water in soil, soil particle cementation can be got up, and makes soil obtain certain intensity, native curing cohesive force that Here it is.When the structure of soil was damaged, plastic structure was also destroyed between most of grogs, and this power is just lost and can not be recovered, so most important to the pulverizing of clay particle, grain diameter is healed better little.
Such as, because cement is poor to the dispersive ability of clay particle, and the clay particle diameter is generally all bigger, the cement granule footpath of this moment is also very big in cement-earth.Intensity depends on the breakage in clay granule footpath and reduces even be zero.
The third apparent cohesion, it is caused by capillary pressure, wicking action makes water rise to from the fine channel of soil to exceed more than the free-water level, this is that capillary water is suspended on its clay that contacts, so the weight of water just by the grogs burden, increases to cause the contact pressure between grogs, when the local hole between grogs is that capillary water is when occupying, produce surface tension on the separation surface of water and air, its counter-force makes the grogs jam-packed, and this power is exactly capillary pressure.In the densification process of the soil body, or in the hydration reaction, because the volumetric expansion of resultant, reasons such as the rising of temperature all capillary pressure can occur.Sand is former when drying to be loose, but when certain water content is arranged, can therefore make and show viscosifying power between the particle.
The essential characteristic of last earth curing technology:
First feature: mechanical process is also referred to as the physical mechanics method
Mechanical process utilizes various machineries that material is pulverized exactly, the method for mix and compacting, and its usefulness is close to each other under external force for the fundamental unit that promotes the soil body, thereby reduces the porosity of the soil body, and degree of compactness increases intensity and improves.It is the simplest that Here it is, the most basic reinforcement means, however this reinforcing process is the process of physical mechanics, so be reversible, the intensity of the soil body is along with the change of ambient conditions can change.
Second feature is chemical method
Chemical method adopts soil-solidified-agent exactly, inorganic or organic binder, add catalyzer, tensio-active agent or active gene, admix in the soil after, utilize the hydration reaction of self to produce water-fast gelling novel substance, the space of the particles filled soil body of binder soil, reach the purpose that the soil body solidify to improve intensity, we are referred to as the solidifying agent of gelling filled-type to this firming agent for soil, and the solidifying agent of common solid curing agent cement class all belongs to this type.
The 3rd feature, physico-chemical processes
Physico-chemical processes adopts the polymer organic binder exactly, utilizes himself polymerization and polycondensation, makes the relevant component in soil particle and the solidifying agent produce the ion-exchange adsorption process, strengthens by the connection between soil particle.The variation of water film thickness improves the intensity of the soil body, thereby reaches the curing purpose of the soil body, and we are referred to as the solidifying agent of moisture film punishment type to this firming agent for soil, common liquid curing-agent, and lime class solidifying agent all belongs to this type.
The 4th feature, heat release
Soil-solidified-agent heat release, its heat be from hydration heat, precipitation heat and different with the difference of curing agent component, and and temperature direct contact is arranged.
Above-mentioned four big features connect each other, mutually promote, and have only the physical and chemical process of chemical process that soil body mechanical property is improved.And the physical mechanics process is to guarantee that chemical process and physical and chemical process play a role better.Making good use of a large amount of heat energy is to promote the quickening of chemical process and physical and chemical process and effectively curing, otherwise above-mentioned various reaction is very slow, even stops, and solidification effect is not good enough certainly.
Gelling filled-type-cement class solidifying agent curing mechanism and characteristics:
1) hydration reaction of cement
A. tricalcium silicate: 3CaOSiO
2, content is the highest in cement, accounts for about 50% of full weight, is the principal element of decision strength of cement, bonding and volume change.
2(3CaO·SiO
2)+6H
2O＝3CaO·2SiO
2·3H
2O+3Ca(OH)
2
B. Dicalcium Phosphate (Feed Grade): 2CaOSiO
2, content is higher in cement, accounts for about 25% of full weight, is the principal element that produces later strength.
2(2CaO·SiO
2)+4H
2O＝3CaO·2SiO
2·3H
2O+Ca(OH)
2
C. tricalcium aluminate: 3CaOAl
2O
3, content accounts for about 10% of full weight in cement, and its hydration rate is the fastest, is the principal element that promotes that coagulate morning.
①3CaO·Al
2O
3+6H
2O＝3CaO·Al
2O
3·6H
2O
②3CaO·Al
2O
3+12H
2O+Ca(OH)
2＝3CaO·Al
2O
3·Ca(OH)
2·12H
2O
D. tetracalcium aluminoferrite: 4CaOAl
2O
3Fe
2O
3, content accounts for about 10% of full weight in cement, is to promote early strong principal element.
①4CaO·Al
2O
3·Fe
2O
3+2Ca(OH)
2+10H
2O＝3CaO·Al
2O
3·6H
2O+3CaO·Fe
2O
3·6H
2O
②4CaO·Al
2O
3·Fe
2O
3+2Ca(OH)
2+10H
2O＝6CaO·Al
2O
3·Fe
2O
3·12H
2O
E. calcium sulfate: CaSO
4, content accounts for about 3% of full weight in cement, but it reacts with tricalcium aluminate and water, generates a kind of compound that is called as cement bacillus---ettringite.
①3CaSO
4+3CaO·Al
2O
3+32H
2O＝3CaO·Al
2O
3·3CaSO
4·32H
2O
②CaSO
4·2H
2O+3CaO·Al
2O
3+10H
2O＝3CaO·Al
2O
3·CaSO
4·12H
2O
Cement bacillus with the form of needle crystal, is separated out in the relatively shorter time at first, this being swift in response, and a large amount of being fixed up from the water absorption and with the crystalline form, this growth to the high soft clay ground intensity of water content is significant.Generate wire and catenate Cement fibre, the one end as plant root from a certain particulate, the other end is grown as axis, particle surface along soil twines formation Cement fibre grid, Here it is occurs promoting solidified earth to have after the intensity before the carbonation, continues the enhanced Another reason.
2) effect of soil particle and cement-hydrate
A. pozzolanic action
Cement and water generation hydration reaction are separated out a large amount of calcium ions, the active mineral matter in these calcium ions and the clay, silicon-dioxide SiO
2, aluminium sesquioxide Al
2O
3, under the exciting in alkaline environment, carry out chemical reaction with CaO, generate water-fast crystalline compounds gradually, moisture Calucium Silicate powder, moisture calcium aluminate isogel material, its chemical equation is as follows:
①CaO+H
2O＝Ca(OH)
2
②SiO
2+Ca(OH)
2+nH
2O＝CaO·SiO
2·(n+1)H
2O
③Al
2O
3+Ca(OH)
2+nH
2O＝CaO·Al
2O
3·(n+1)H
2O
The gelatinous mass of these new formation is sclerosis gradually in water and in the air, thereby the intensity and the stability of cement-earth have been increased, from the observation of scanning electronic microscope as seen, no any organic connections between the natural earth particle, and have a lot of holes, after admixing cement 7d, be full of the cement gel body around the soil particle, and the small amount of cement xln arranged, after one month, generate a large amount of fibrous crystallizations in the cement-earth, and constantly extend in the hole that is filled to soil particle and form network structure, increased native intensity and water stability energy.
B. ion-exchange turns usefulness into granule
Contain several mineral materials in the soil, and have free monovalence sodium ion Na on the grogs surface
+With potassium ion K
+, the divalent calcium ion Ca of their energy of one side and hydrated cementitious resultant
+, carry out the equivalent adsorption exchange, make less soil particle form bigger granule, thereby improved native physicals, soil strength is improved, on the other hand, etch in grogs makes the SiO in the grogs
2And Al
2O
3Sensitization, and in the dissolving highly basic medium, PH=10～12 and Ca (OH)
2Water generation reaction Calucium Silicate powder and drated calcium aluminate, the chemical bonded refractory composite crystals structure between these crystal forms intensity, and soil strength is improved once more.
3) carbonation
Free hydrogen calcium oxide Ca (OH) in the cement-hydrate
2Constantly absorb HCO in the water
3 -Reaction generates and ties firmly after water-fast lime carbonate is formed the crystallization screen work with carbon dioxide in air, also can improve soil strength.
Ca(OH)
2+CO
2＝CaCO
3↓+H
2O
This reaction is more weaker than the effect of above-mentioned pozzolanic reaction, and its rate of growth is slow, and changes in amplitude is also less.
4) skeleton function of cement stone
In in above-mentioned reaction process, the hydrate of cement hardens voluntarily and forms the skeleton of cement stone, thereby whole the glued one-tenth of soil particle, makes it form intensity, and improves its water stability.Because cement dosage in solidified earth is very few, therefore can not form successive cement stone net, but very thin continuous interlayer, so its intensity, stability are all not by a long sight than cement concrete.
5) hydration heat
Above-mentioned all chemical reactions are all relevant with temperature, main hydration reaction except temperature from solidifying agent itself, and this and aquation height, precipitation heat has substantial connection.
Cement class solidifying agent hydration institute water requirement is about 15% of cement weight, and volume 3% heat of emitting 90 card/kg in this process that expands approximately can be evaporated 15% moisture that is about cement weight, and the water content of soil is reduced.Yet because the poor thermal conductivity of cement needs the moisture content of 3 times of cement weights to come health approximately.Otherwise easy to crack, this explanation must be grasped best construction water ratio in construction, and this is the key that guarantees the solidified earth solidification effect, and as calculated, total water content is about 4-6 times of cement weight.
The characteristics of moisture film punishment type-lime class solidifying agent curing mechanism:
At present domestic and international common liquid curing-agent, be lime stabilization class solidifying agent, its lime stabilization class intensity forms mechanism and is summarized as follows: solidified earth intensity forms identical with the intensity formation mechanism of lime soil, two grey gravels, all be by ion-exchange, make the formation plate body that gathers materials, have higher intensity.But solidifying agent has better solved the problem of water of constitution in the soil particle, and ion-exchange speed is accelerated, and can better improve the early strength of plate body.Water in soil generally can be divided into three classes:
(1) crystal water and constitution water---this class water will could separated out from mineral substance under the high-temperature in the mineral substance the inside very much, therefore is bound by the water of soil mineral particle lattice, from the soil mechanics viewpoint they is regarded as the part of mineral substance, does not consider;
(2) planar water or hygroscopic water or pellicular water.Hygroscopic water---condense in the lip-deep water of soil particle, if the soil that will do is placed in the wet air, the quality of soil will increase, until the increase value is equivalent to till the maximum rate of moisture absorption of soil.The size of rate of moisture absorption is decided by the specific surface area numerical value of soil.The maximum rate of moisture absorption of coarse sand is below 1～2%, and the maximum rate of moisture absorption of clay can reach more than 10%.The character of the character of hygroscopic water and ordinary liquid water has very big difference.Owing on particle surface, there is very big electric molecular force effect can reach a power barometric point, its the firm sorption of this part water electrode is on the grogs surface, be adsorbed in soil surface by electrostatic attraction, it forms with film and is coating soil colloid, thickness generally is no more than 0.003 micron, character approaches solid body, and its proportion is greater than 1.Even most of hygroscopic water is not also freezed when temperature is for-78 ℃, hygroscopic water only depends on mechanical effect to discharge under the pressure influence that acts on soil, soil is dried to make to reach constant weight under 105 ℃ of temperature, just hygroscopic water might be got rid of.Sandy soil only contains loose condition (of surface).When sticking class soil only contains hygroscopic water, be close or loose state, be dried powder through manually grinding.Pellicular water---less than 0.5 μ m, beyond the hygroscopic water, owing to electric molecular force is restrained the pellicular water that is called around the grogs.Pellicular water occupy between hygroscopic water and the free water, along with the increase of leaving the particle surface distance, electricity molecular force reduces very soon, thereby the character of pellicular water changes gradually along with leaving the grogs surface, approach glue viscosity from approaching solid-state becoming, ease down to the viscosity of free water at last, finally change free water into.
(3) free water---free water is present in particle surface molecular force steam circle greater than in the soil pores beyond the 0.5 μ m, can also can flow in soil under surface tension effects under action of gravity.Free water is to be present in water in the natural earth body opening crack with various forms, comprises surface tension water, capillary water and free-pouring gravity water in the space.Planar water is the principal element that influences the soil swelling characteristic in this three classes water.
According to electrochemical principle, water molecules has bipolarity, and promptly the end at oxygen has negative charge, has positive charge at an end of hydrogen.Along and, each moisture just as a bar magnet, under the action of a magnetic field, rearrange, be adsorbed onto by electrostatic attraction on the electric charge on grogs surface.Cohesive soil, because its area is very big, can adsorb a large amount of water, the electrostatic attraction between grogs and moisture film can be up to 10000 normal atmosphere, if supply with under the competent condition in free water, adsorbed film of water is continuous thickening also, not only cause soil property soft, and produce huge bulging force, if soil matrix is in the effect repeatedly of expand with wet and contract with dry, and under the effect of cold district freeze-thaw cycle, certainly will cause road protuberance, rupture, gather around the distortion of serious plant disease such as bag, depression, frost boiling and damage.So, effectively reduce adsorbed film of water thickness or it is got rid of, be the control road disease, and the essence link that prolongs its work-ing life.Up-to-date achievement in research shows, reduces and the elimination planar water, and most economical effective means is exactly an electrochemistry soil ion technology.It on the atomic structure radical change soil function, soil particle rearranged and have hydrophobic nature and high compactness.
From the geotechnical engineering angle, the mineral composition of soil mainly is meant other mineral that clay mineral in the soil and companion deposit.They are the active materials of physics in the soil, chemical property, to the engineering properties of clay by than remarkable influence.Clay mineral in soil broad variety often mix to exist, and their lattice structure is more similar, and crystallization is not only tiny but also irregular.The crystalline mineral that surfactivity is strong is exactly a clay mineral, it is exactly in fact to belong to the hydrous alumino silicates mineral and contain a spot of metal oxide impurities, approximately also have 18 kinds of mineral compositions, most importantly kaolin, polynite and illite clay as ferric oxide, magnesium oxide etc.Kaolin mineral is a quite stable, has low shrinkability and swelling property, and water molecules can not injection in its layer.And, have only ionic interaction and faint Van der Waals for that bonding force is provided on each polynite mineral grain surface, so water molecules embeds between two elements easily, produce sizable expansion in this case.Illite clay is similar to polynite, but in its silicon layer, many Siliciumatoms are replaced by lead atom.These clay minerals appear in the soil, can its physical properties of remarkable influence.
The clay of areas of Shenyang, mainly be by rock through repeatedly weathering, Ca is lost
2+, Mg
2+, Na
+, K
+The plasma composition finally forms, and the principle of solidifying agent is exactly the nutritive ingredient that is lost in adding in clay, makes it recover certain soundness.Solidifying agent is a kind of dense ionization agent, and the tensio-active agent that it contains can increase the ability of ionizer infiltration soil, and the cracking of catalysis moisture produces hydrogen ion H
+, hydroxide ion OH
-, induce the positively charged ion Ca of clay particle sub-surface
2+, Mg
2+, Na
+, K
+, H
+Deng carrying out ion-exchange.In this course, once the water that is adsorbed on the clay surface because of electrostatic attraction was just replaced by ion, adsorbed film of water attenuation and be converted into free water gradually, and the pressure that is accompanied by soil is extruded discharge, the particle of soil is rearranged, thereby has improved the compaction rate of the soil body rapidly.Meanwhile, the peptizer that contains in the solidifying agent produces the chemicrystallization reaction in grogs, makes that the grogs colloid is bonding to become permeable hardly solid integral body.Like this, originally the cohesive soil that had dispersiveness, wet collapsing property, adhesivity, wetting ability, swell-shrink characteristic, katalysis by solidifying agent, ion exchange, dehydration, solidification and the continuous construction technology that rolls of mix, become the closely knit Stabilized Soil of quality, its resistance to compression slip resistance, rigidity, water stability and supporting capacity all greatly improve, and the CBR value can reach 250%.Should be pointed out that the effect of solidifying agent in soil, is long-term continuing and irreversible process, and As time goes on, the later strength of Stabilized Soil also can improve constantly, and this can prolong the work-ing life of road undoubtedly more.
Lime class solidifying agent curing mechanism
Ion exchange reaction
Unslaked lime is met water and is just begun to clear up, and sends a large amount of heats simultaneously.
CaO+H
2O＝Ca(OH)
2+64058J
Because after white lime was water-soluble, Ca easily dissociated
2+(OH
-) ion promptly
Ca(OH)
2→Ca
2++2(OH
-)
So according to the law of mass action, the divalence Ca in the white lime
2+With the low price positively charged ion Na in the soil
+, K
+Exchange reflection Deng monovalent ion, its reaction formula
X
++Ca
++Ca
+++X
+
X
++Ca(OH)
2Ca
+++2X(OH)
Because Ca
++The combination water film thickness than the monovalent base metal ion (Na of soil absorption
+, K
+) will approach, and (Ca
++) be subjected to the variation of extraneous moisture effects little in conjunction with moisture film, causing the dispersiveness of soil, adhesivity reduces, thereby shows good water stability, and the result has improved native physicals
The crystallization reaction of calcium hydroxide
White lime Ca (OH)
2In soil because moisture is less, have again small part divide disassociation some form moisture calcium hydroxide xln, its reaction formula after can drawing moisture content in the soil
Ca(OH)
2+nH
2O＝Ca(OH)·nH
2O
Can become whole to soil particle cementation and form certain intensity, and crystal Ca (OH)
2Solubleness than non-crystal Ca (OH)
2Compare almost half as largely, thereby the water stability of limestone soil also is improved.
3. carbonation reaction
Be exactly that white lime is drawn in the air or CO in the soil
2Generate CaCO
3Its reaction formula:
Ca(OH)
2+CO
2＝CaCO
3+H
2O
Test shows that the carbonic acid chemical reaction is just having under the condition of water, just can carry out, and when being used for dry carbonic acid and acting on the lime powder of complete drying, this reaction almost completely stops to carry out, and during carbonating, the effect of lime and carbonic anhydride needs water for this reason.Generating lime carbonate is hard xln, has higher intensity and water buoyancy, and it makes soil obtain reinforcing to the cementation of soil.Because CO
2May infiltrate also by the hole of compound and may produce, after limestone soil gets the surface carbon acidifying, then form one deck duricrust, and hinder CO by itself
2Further infiltrate, thereby Ca (OH)
2Carbonization be a quite long reaction process, this also is the one of the main reasons that forms later strength on the lime.
Pozzolanic reaction
After the active silica-alumina mineral reaction in lime and the soil, generate moisture silicic acid energy and aluminic acid, under the effect of moisture content, knot forms early strength firmly gradually.
Its reaction formula: X Ca (OH)
2+ SiO
2+ (n-1) H
2O=X CaOSiO
2N H
2O
X?Ca(OH)
2+Al
2O
3+(n-1)H
2O＝X?CaO·SiO
2·(n-1)H
2O
X represents in the formula: volcanic ash reflection is constantly to absorb under the situation of moisture, take place gradually thereby have hydraulic character.It is to constitute the early stage major cause that changes of limestone soil.
Hydration heat
Unslaked lime has absorbed the water generates aquation of itself weight about 32.1%, and volume approximately is expanded to twice.Become white lime: Ca (OH)
2, the heat of in this process, emitting 280 kilocalories/KG, heat promotes moisture evaporation, 47% of evaporation unslaked lime weight makes the water content of soil reduce thus, meanwhile.Because the expansion of volume also has compacted effect, the capillary stress of production all can consume moisture.So must control the most tame construction water ratio well in construction, very necessary, this is the key that guarantees the solidified earth solidification effect, and as calculated, the 2-4 that total water consumption is about unslaked lime weight doubly.In sum, the curing mechanism of soil-solidified-agent should be summarised as three processes such as physical mechanics process, chemical process and physical and chemical process.The physical mechanics process is that soil-solidified-agent is when curing soil, soil is through after construction technology process such as pulverizing, screen, mix and stir and roll, the elementary cell of the soil body is pressed close to each other under the effect of external force and is agreed with mutually, thereby reduce the porosity of the soil body, increase degree of compactness, reduce water permeability, this process is a reversible, and the intensity of the soil body can change along with the change of ambient conditions.The physical mechanics process is that the soil-solidified-agent of any kind is necessary when curing soil, because the density of curing soil and the soil-solidified-agent homogeneity in the soil body, the formation of intensity is had important effect.In fact, the physical mechanics process is to solidify a kind of the simplest of the soil body and fundamental method.And chemical process is meant soil-solidified-agent in the process of curing soil, the chemical reaction of chemical reaction that itself component takes place and some component generation in soil and the soil-solidified-agent etc.The former comprises the hydrolysis of mineral-type soil solidification agent material itself and the carbonation reaction of hydration reaction and Carbon Dioxide in Air, the polymerization of organic firming agent for soil and polycondensation etc.Component in latter's soil-solidified-agent and the pozzolanic reaction between the soil particle, the complex reaction between organic polymer and soil particle surface etc.Physical and chemical process mainly is meant the adsorption process of each component in soil particle and the soil-solidified-agent, comprises physical adsorption, chemisorption and physical and chemical adsorption.Physical adsorption is meant that under the effect of molecular force the elementary cell of the soil body is adsorbed on its surface with some component in the soil-solidified-agent, and its surface free energy is minimized.Chemisorption is meant generation chemical reaction between sorbent material and the adsorbed material and generates new insoluble substance, and form chemical bond between sorbent material and adsorbed material.Physical and chemical adsorption is meant that ion-exchange absorption has taken place for some ion in the soil-solidified-agent and the ion on soil body elementary cell surface.In the physics chemical action process of the soil-solidified-agent and the soil body, the mineral-type soil-solidified-agent mainly is a physical and chemical adsorption.After the dissolving of the calcium salt in the mineral-type soil-solidified-agent and magnesium salts, the sodium ion generation permutoid reaction that calcium ion and magnesium ion and soil body elementary cell are adsorbed can increase the agglomeration of soil particle.Organic firming agent for soil mainly is physical adsorption and chemisorption process, such as some group of macromolecular material and the physical adsorption between the soil particle, the chemisorption between macromolecular material and the soil particle etc.More than three kinds of processes different because of the composition of soil-solidified-agent, but these three kinds of processes are not isolated mutually, but connect each other and mutually promote.In these three kinds of processes, have only chemical process and physical and chemical process that the engineering properties such as mechanical property, anti-permeability performance, endurance quality of the soil body are improved, the physical mechanics process then is to guarantee that chemical process and physical and chemical process better play a role.
2, the selected main raw material of a kind of environment protection type soil solidifying agent
It is by industrial chemicals such as tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, tetracalcium aluminoferrite, slag, lime carbonate, calcium sulfate, Tai-Ace S 150, sodium sulfate, calcium lignin sulphonate, sodium lignosulfonates for a kind of environment protection type soil solidifying agent, form multiple best-of-breed technology prescription by attribute separately, through optimizing composite refining forming.Slag is the waste residue of iron and steel smelting.It is treated as granular particle through water or air quenching, is called granulated blast-furnace slag.Its main chemical compositions is CaO, SiO
2, Al
2O
3, MgO etc.Slag behind the shrend chilling, vitreum content is more, but particle is thicker, does not react with water.But behind ball mill 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.SiO in the slag
2And Al
2O
3The reaction mechanism that composition forms gelatinous mass has two kinds.A kind of mechanism is SiO under alkaline condition
2And Al
2O
3From slag, be dissolved out, enter the aqueous solution, then be dissolved in the aqueous solution in positively charged ion combine, form silicic acid base and aluminic acid base gelatinous mass.Therefore, be 400m when blast-furnace slag becomes Blain specific surface through ball mill grinding
2-800m
2During the ultrafine powder of/kg, its hydraulically active can more be given full play of.The material that can impel slag to present gelling ability is called exciting agent.Exciting agent can be divided into two kinds of bases exciting agent and salt exciting agents.The bases exciting agent has white lime, cement clinker, sodium hydroxide, potassium hydroxide etc.The salt exciting agent has calcium sulfate, sodium sulfate, yellow soda ash, salt of wormwood etc.
3, the raw material to environment protection type soil solidifying agent carries out qualitative component analysis
1) sampling: we have adopted method of random sampling, get its raw material and respectively are no less than 10 kilograms, divide on the plastic cloth of white, repeatedly taper to 1000-2000 grams with quartering, in the sampling jug of packing into, finish writing label, seal, and have added the date, and record is equipped with inspection.
2) sample title: tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, tetracalcium aluminoferrite, slag, lime carbonate, calcium sulfate, Tai-Ace S 150, sodium sulfate, calcium lignin sulphonate, sodium lignosulfonate etc.
3) illustrate about sample: the required six kinds of main raw material(s)s of tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, tetracalcium aluminoferrite, slag, lime carbonate of environment protection type soil solidifying agent are production in enormous quantities; And calcium sulfate, Tai-Ace S 150, sodium sulfate, calcium lignin sulphonate, sodium lignosulfonate etc. are small serial production, and they are used as the promoting agent of environment protection type soil solidifying agent and the material of exciting agent and elementary composition.
4) analysis project: outward appearance: solid particulate is a ultrafine powder.Main component: 3Ca.SiO
2, 2Ca.SiO
2, 3Ca.Al
2O
3, Fe
2O
3, CaO, SiO
2, Al
2O
3, Fe
2O
3, MgO, Al
2(SO
4)
3, CaSO
4, Na
2SO
4Deng.
5) preparation of sample product fully: each sample product respectively claims 1000 grams, is accurate to 0.01 gram, and in the volumetric flask of packing into, wherein tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, tetracalcium aluminoferrite, slag, lime carbonate are Blain specific surface 400m
2-800m
2The ultrafine powder of/kg.
4, the experiment of environment protection type soil solidifying agent and analysis
We learn from the analysis of the main raw material(s) of soil-solidified-agent: attribute and different ratios are formed best complex type technical formula to main material separately in it with at least two kinds in four kinds in tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, tetracalcium aluminoferrite, slag, six kinds of industrial chemicals of lime carbonate or five kinds and calcium sulfate, Tai-Ace S 150, sodium sulfate, calcium lignin sulphonate, five kinds of industrial chemicals of sodium lignosulfonate.For this reason, we have done the true soil solidification experiment of soil-solidified-agent.
5, the soil solidification effect of environment protection type soil solidifying agent experiment
Experiment purpose: the technical formula of various environment protection type soil solidifying agents to soil solidification effect situation actual specific.
Experimental index: in the time that equates, adopts different technical formulas that soil is cured with the equivalent material, with fineness: the fineness of powdery soil solidifying agent is that 0.074mm standard sieve screen over-size must not be above 15%; Between condensing in fact: solidifying agent mixes soil construction operation under the optimum moisture content state, and its presetting period should promptly be parked 4h with the solidified earth compound greater than 4h, the system test specimen, and the ultimate compression strength loss is not more than 10%; Stability: the solidified earth test specimen behind 65 ℃ of steam-cured 24h, naturally cooling in boiling case, the test specimen surface must not crackle; Unconfined compression strength MPa: the quality of judging its solidification effect with 7 days, 14 days and 28 days unconfined compression strengths and solidified earth antifreezing test.
Environment protection type soil solidifying agent is to the solidification effect of soil
3, the scope of application of the present invention extensively and the curing soil effect remarkable
A kind of environment protection type soil solidifying agent is Blain specific surface 400m
2-800m
2The solid granular of/kg, it has the attribute of curing soil.It is applicable to mainly that it is applicable to and checks winds and fixes drifting sand; Canal seepage control is handled and the solidified earth prefabricated section is produced; Dyke and bank slope are reinforced; Subgrade strengthening and town road structural sheet and Soft Ground are suitable for extensive mechanized construction operation.
Three, summary of the invention
1, the purpose of invention " a kind of environment protection type soil solidifying agent "
For solving at present in construction work and municipal infrastructure construction, employed soil-solidified-agent generally is strong basicity.Because the nature influence of various factors, such as rainwash etc.This alkaline soil-solidified-agent can make the salting of soil of periphery, and polluted surface water and underground water, has a strong impact on ecotope.And solving its function singleness in use, anti-permeability performance and intensity are low, Gu native effect and weather resistance are relatively poor.The invention provides a kind of environment protection type soil solidifying agent.
2, the technical solution adopted for the present invention to solve the technical problems
It is by in tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, tetracalcium aluminoferrite, slag, six kinds of industrial chemicals of lime carbonate four kinds or five kinds and calcium sulfate, Tai-Ace S 150, sodium sulfate, calcium lignin sulphonate, five kinds of industrial chemicals of sodium lignosulfonate at least two kinds for a kind of environment protection type soil solidifying agent, form multiple best complex type technical formula by attribute separately, through optimizing composite refining forming, the parts by weight of component of each component is in its technical formula:
Tricalcium silicate: 45～65 Dicalcium Phosphate (Feed Grade)s: 15～30
Tricalcium aluminate: 3～15 tetracalcium aluminoferrites: 8～25
Slag: 5～65 lime carbonate: 6～15
Calcium sulfate: 1～10 Tai-Ace S 150: 2～8
Sodium sulfate: 1～9 calcium lignin sulphonate: 0.1～3
Sodium lignosulfonate: 0.1～3.
Its technical formula combination is:
Technical formula one:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and lime carbonate and calcium sulfate and Tai-Ace S 150 and sodium sulfate and calcium lignin sulphonate
Technical formula two:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and slag and calcium sulfate and sodium sulfate and calcium lignin sulphonate
Technical formula three:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and lime carbonate and calcium sulfate and Tai-Ace S 150 and sodium sulfate
Technical formula four:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and slag and calcium sulfate and sodium sulfate and sodium lignosulfonate
Technical formula five:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and calcium sulfate and sodium sulfate and sodium lignosulfonate
A kind of environment protection type soil solidifying agent of the present invention is Blain specific surface 400m
2-800m
2The solid granular of/kg, the technology proportioning of soil and soil-solidified-agent is component 100:6～18 by weight during use, is suitable for extensive mechanized construction operation.
3., the beneficial effect compared with background technology of a kind of environment protection type soil solidifying agent
A kind of environment protection type soil solidifying agent of the present invention, good environmental protection.It utilizes natural soil to be cured, and makes the curing soil layer can bear big pressure, and good seepage-proof property also has certain weather resistance, through the water logging bubble argillization does not take place; It has utilized a large amount of trade wastes, has promptly saved starting material, reduces the sandstone consumption, has solved a large amount of trade waste discharging and problem of environmental pollution again, and the protection of ecotope is had active effect; Its main raw material(s) is inorganics, and is nontoxic, harmless, pollution-free, all is safe to animal and plant, multinomial function such as have deodorant to taste, sterilization and disinfection simultaneously, purify water.
Be in particular in:
1), environment protection type soil solidifying agent, good environmental protection, it utilizes natural soil to be cured, and gathers materials on the spot, and reduces construction costs, compares with the cement stabilizing structural sheet in the town road structural sheet of present use and reduces construction costs more than 1/3;
2), environment protection type soil solidifying agent, utilized a large amount of trade wastes, solved trade waste discharging and problem of environmental pollution;
3), environment protection type soil solidifying agent, reduced sandstone consumptions a large amount of in the town road structure of present use, the destruction of having reduced resource has active effect to the protection of ecotope;
4), the use of soil-solidified-agent, be convenient to citizens' activities, saved great amount of manpower and material resources, got twice the result with half the effort;
5), safeguarded city look and feel and sanitary clean and tidy, improved the overall image in city.
We use years, result of use to environment protection type soil solidifying agent has been carried out tracking investigation, and carried out feasibility analysis, constantly summarize in practice and improve, last conclusion is: the use of environment protection type soil solidifying agent, and particularly to ungetable rural dirt road, the traffic and the residential quarters road of remote districts, under the situation of insufficient funds, be most convenient and also effect better; In the needs place of checking winds and fixing drifting sand, use the multiplication of environment protection type soil solidifying agent effect, and be very important and necessary; It is with low cost, and raw material supply is sufficient and be easy to buying, and production technique is simple and easy to do, and it is applicable to checks winds and fixes drifting sand; Canal seepage control is handled and the solidified earth prefabricated section is produced; Dyke and bank slope are reinforced; Subgrade strengthening and town road structural sheet and Soft Ground are suitable for extensive mechanized construction operation.
Four, embodiment
When environment protection type soil solidifying agent is that Blain specific surface is 400m
2-800m
2During the solid granular of/kg:
At first, according to the best of breed prescription of environment protection type soil solidifying agent, required various industrial chemicals are tested.Through check, after being defined as meeting quality standard, each material is seated in carries out crushing and screening in the pulverizer; Then, each material after pulverizing is put the people carry out grinding in ball mill, making it reach Blain specific surface is 400m
2-800m
2The quality standard of the solid granular of/kg; Secondly, again it is placed to and carries out homogenizing in the homogenizer and make it even; Once more, the environment protection type soil solidifying agent sample of gathering finished product carries out test verification; At last, the finished product pack, the storage that are up to the standards after tested is standby, guard against damp during storage.
Embodiment one: when soil is cohesive soil or inferior cohesive soil
Produce 110 tons of environment protection type soil solidifying agents, the parts by weight of component of each component is in its technical formula:
Tricalcium silicate: 50 Dicalcium Phosphate (Feed Grade)s: 25
Tricalcium aluminate: 10 tetracalcium aluminoferrites: 10
Lime carbonate: 6 calcium sulfate: 2.5
Tai-Ace S 150: 3 sodium sulfate: 3
Calcium lignin sulphonate: 0.5
At first, according to the technical formula of environment protection type soil solidifying agent, to required tricalcium silicate: 50 tons and Dicalcium Phosphate (Feed Grade): 25 tons and tricalcium aluminate: 10 tons and tetracalcium aluminoferrite: 10 tons and lime carbonate: 6 tons and calcium sulfate: 2.5 tons and Tai-Ace S 150: 3 tons and sodium sulfate: 3 tons and calcium lignin sulphonate: test for 0.5 ton.Through check, after being defined as meeting quality standard, each material is seated in carries out crushing and screening in the pulverizer; Then, each material after pulverizing is put the people carry out grinding in ball mill, making it reach Blain specific surface is 400m
2-800m
2The quality standard of the solid granular of/kg; Secondly, again it is placed to and carries out homogenizing in the homogenizer and make it even; Once more, the environment protection type soil solidifying agent sample of gathering finished product carries out test verification, promptly makes 110 tons of environment protection type soil solidifying agents.
Embodiment two: when soil is inferior cohesive soil or inferior sandy soil
Produce 110 tons of environment protection type soil solidifying agents, the parts by weight of component of each component is in its technical formula:
Tricalcium silicate: 50 Dicalcium Phosphate (Feed Grade)s: 25
Tricalcium aluminate: 10 tetracalcium aluminoferrites: 10
Slag: 9 calcium sulfate: 2.5
Sodium sulfate: 3 calcium lignin sulphonates: 0.5
At first, according to the technical formula of environment protection type soil solidifying agent, to required tricalcium silicate: 50 tons and Dicalcium Phosphate (Feed Grade): 25 tons and tricalcium aluminate: 10 tons and tetracalcium aluminoferrite: 10 tons and slag: 9 tons and calcium sulfate: 2.5 tons and sodium sulfate: 3 tons and calcium lignin sulphonate: test for 0.5 ton.Through check, after being defined as meeting quality standard, each material is seated in carries out crushing and screening in the pulverizer; Then, each material after pulverizing is put the people carry out grinding in ball mill, making it reach Blain specific surface is 400m
2-800m
2The quality standard of the solid granular of/kg; Secondly, again it is placed to and carries out homogenizing in the homogenizer and make it even; Once more, the environment protection type soil solidifying agent sample of gathering finished product carries out test verification, promptly makes 110 tons of environment protection type soil solidifying agents.
Embodiment three: when soil is inferior sandy soil or sandy soil
Produce 110 tons of environment protection type soil solidifying agents, the parts by weight of component of each component is in its technical formula:
Tricalcium silicate: 50 Dicalcium Phosphate (Feed Grade)s: 25
Tricalcium aluminate: 10 tetracalcium aluminoferrites: 10
Lime carbonate: 6 calcium sulfate: 3
Tai-Ace S 150: 3 sodium sulfate: 3
At first, according to the technical formula of environment protection type soil solidifying agent, to required tricalcium silicate: 50 tons and Dicalcium Phosphate (Feed Grade): 25 tons and tricalcium aluminate: 10 tons and tetracalcium aluminoferrite: 10 tons and lime carbonate: 6 tons and calcium sulfate: 3 tons and Tai-Ace S 150: 3 tons and sodium sulfate: test for 3 tons.Through check, after being defined as meeting quality standard, each material is seated in carries out crushing and screening in the pulverizer; Then, each material after pulverizing is put the people carry out grinding in ball mill, making it reach Blain specific surface is 400m
2-800m
2The quality standard of the solid granular of/kg; Secondly, again it is placed to and carries out homogenizing in the homogenizer and make it even; Once more, the environment protection type soil solidifying agent sample of gathering finished product carries out test verification, promptly makes 110 tons of environment protection type soil solidifying agents.
Embodiment four: when soil is sandy soil or silt
Produce 110 tons of environment protection type soil solidifying agents, the parts by weight of component of each component is in its technical formula:
Tricalcium silicate: 50 Dicalcium Phosphate (Feed Grade)s: 25
Tricalcium aluminate: 10 tetracalcium aluminoferrites: 10
Slag: 9 calcium sulfate: 2.5
Sodium sulfate: 3 sodium lignosulfonates: 0.5
At first, according to the technical formula of environment protection type soil solidifying agent, to required tricalcium silicate: 50 tons and Dicalcium Phosphate (Feed Grade): 25 tons and tricalcium aluminate: 10 tons and tetracalcium aluminoferrite: 10 tons and slag: 9 tons and calcium sulfate: 2.5 tons and sodium sulfate: 3 tons and sodium lignosulfonate: test for 0.5 ton.Through check, after being defined as meeting quality standard, each material is seated in carries out crushing and screening in the pulverizer; Then, each material after pulverizing is put the people carry out grinding in ball mill, making it reach Blain specific surface is 400m
2-800m
2The quality standard of the solid granular of/kg; Secondly, again it is placed to and carries out homogenizing in the homogenizer and make it even; Once more, the environment protection type soil solidifying agent sample of gathering finished product carries out test verification, promptly makes 110 tons of environment protection type soil solidifying agents
Embodiment five: when soil is silt or drift-sand
Produce 100 tons of environment protection type soil solidifying agents, the parts by weight of component of each component is in its technical formula:
Tricalcium silicate: 50 Dicalcium Phosphate (Feed Grade)s: 25
Tricalcium aluminate: 10 tetracalcium aluminoferrites: 10
Calcium sulfate: 2.5 sodium sulfate: 2
Sodium lignosulfonate: 0.5
At first, according to the technical formula of environment protection type soil solidifying agent, to required tricalcium silicate: 50 tons and Dicalcium Phosphate (Feed Grade): 25 tons and tricalcium aluminate: 10 tons and tetracalcium aluminoferrite: 10 tons and calcium sulfate: 2.5 tons and sodium sulfate: 2 tons and sodium lignosulfonate: test for 0.5 ton.Through check, after being defined as meeting quality standard, each material is seated in carries out crushing and screening in the pulverizer; Then, each material after pulverizing is put the people carry out grinding in ball mill, making it reach Blain specific surface is 400m
2-800m
2The quality standard of the solid granular of/kg; Secondly, again it is placed to and carries out homogenizing in the homogenizer and make it even; Once more, the environment protection type soil solidifying agent sample of gathering finished product carries out test verification, promptly makes 100 tons of environment protection type soil solidifying agents.
Claims (2)
1, a kind of environment protection type soil solidifying agent, it is characterized in that: it is by at least two kinds in four kinds in tricalcium silicate, Dicalcium Phosphate (Feed Grade), tricalcium aluminate, tetracalcium aluminoferrite, slag, six kinds of industrial chemicals of lime carbonate or five kinds and calcium sulfate, Tai-Ace S 150, sodium sulfate, calcium lignin sulphonate, five kinds of industrial chemicals of sodium lignosulfonate, through optimizing composite refining forming, the parts by weight of component of each component is in its technical formula:
Tricalcium silicate: 45～65 Dicalcium Phosphate (Feed Grade)s: 15～30
Tricalcium aluminate: 3～15 tetracalcium aluminoferrites: 8～25
Slag: 5～65 lime carbonate: 6～15
Calcium sulfate: 1～10 Tai-Ace S 150: 2～8
Sodium sulfate: 1～9 calcium lignin sulphonate: 0.1～3
Sodium lignosulfonate: 0.1～3.
2, a kind of environment protection type soil solidifying agent according to claim 1 is characterized in that being made up of following technical formula:
Technical formula one:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and lime carbonate and calcium sulfate and Tai-Ace S 150 and sodium sulfate and calcium lignin sulphonate
Technical formula two:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and slag and calcium sulfate and sodium sulfate and calcium lignin sulphonate
Technical formula three:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and lime carbonate and calcium sulfate and Tai-Ace S 150 and sodium sulfate
Technical formula four:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and slag and calcium sulfate and sodium sulfate and sodium lignosulfonate
Technical formula five:
Tricalcium silicate and Dicalcium Phosphate (Feed Grade) and tricalcium aluminate and tetracalcium aluminoferrite and calcium sulfate and sodium sulfate and sodium lignosulfonate
A kind of environment protection type soil solidifying agent of the present invention is Blain specific surface 400m
2-800m
2The solid granular of/kg, the technology proportioning of soil and soil-solidified-agent is component 100:6～18 by weight during use, is suitable for extensive mechanized construction operation.
Priority Applications (1)
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|---|---|---|---|
| CNA2008102299065A CN101475810A (en) | 2008-12-18 | 2008-12-18 | Environment-friendly soil curing agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008102299065A CN101475810A (en) | 2008-12-18 | 2008-12-18 | Environment-friendly soil curing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101475810A true CN101475810A (en) | 2009-07-08 |
Family
ID=40836588
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542782A (en) * | 2015-12-11 | 2016-05-04 | 马奎忠 | Soil hardening stabilization agent and soil hardening stabilization method |
| CN109060417A (en) * | 2018-10-22 | 2018-12-21 | 长安大学 | A kind of original state coarse-grained soil sampling method |
| CN111018446A (en) * | 2019-12-28 | 2020-04-17 | 江西圣保罗新型材料有限公司 | Method for recycling waste generated by refining rare earth |
| CN112830758A (en) * | 2021-02-26 | 2021-05-25 | 何旭阳 | Environment-friendly soil stabilizer and preparation method thereof |
| CN113231442A (en) * | 2021-05-08 | 2021-08-10 | 南宁市城乡规划设计研究院有限公司 | Aluminum tailing slag improvement method based on ion exchange and crosslinking reaction |
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2008
- 2008-12-18 CN CNA2008102299065A patent/CN101475810A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542782A (en) * | 2015-12-11 | 2016-05-04 | 马奎忠 | Soil hardening stabilization agent and soil hardening stabilization method |
| CN109060417A (en) * | 2018-10-22 | 2018-12-21 | 长安大学 | A kind of original state coarse-grained soil sampling method |
| CN111018446A (en) * | 2019-12-28 | 2020-04-17 | 江西圣保罗新型材料有限公司 | Method for recycling waste generated by refining rare earth |
| CN112830758A (en) * | 2021-02-26 | 2021-05-25 | 何旭阳 | Environment-friendly soil stabilizer and preparation method thereof |
| CN113231442A (en) * | 2021-05-08 | 2021-08-10 | 南宁市城乡规划设计研究院有限公司 | Aluminum tailing slag improvement method based on ion exchange and crosslinking reaction |
| CN113231442B (en) * | 2021-05-08 | 2022-05-24 | 南宁市城乡规划设计研究院有限公司 | Aluminum tailing slag improvement method based on ion exchange and crosslinking reaction |
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