CN105602571A - Polymer soil solidifier - Google Patents
Polymer soil solidifier Download PDFInfo
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- CN105602571A CN105602571A CN201511016760.2A CN201511016760A CN105602571A CN 105602571 A CN105602571 A CN 105602571A CN 201511016760 A CN201511016760 A CN 201511016760A CN 105602571 A CN105602571 A CN 105602571A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/40—Soil-conditioning materials or soil-stabilising materials containing mixtures of inorganic and organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2103/00—Civil engineering use
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a polymer soil solidifier, belonging to the technical field of building materials. The polymer soil solidifier is prepared from the following components in ratio by weight: 5-7 parts of Portland cement, 30-40 parts of binder, 10-20 parts of fortifier, 3-5 parts of early strength agent, 4-8 parts of waterproof agent, 6-10 parts of filling agent, 1-3 parts of water reducer, 0.4-0.6 part of surfactant, 2-4 parts of dispersant and 0.01-0.03 part of air entraining agent. The polymer soil solidifier has a reasonable formula, large seepage depth (18mm), large press resistance ( lateral confinement-free press resistance after 7 days is 12.34MPa), the waterproofness is good (water absorbility is 0.86% after 7 days) and the solidifier can be applied to engineerings of roads, railways and subways.
Description
Technical field
The present invention relates to a kind of polymer soil-solidified-agent, belong to building material technical field.
Background technology
Soil-solidified-agent be a kind of by multiple inorganic, organic material synthetic for improving soilThe composite of engineering performance. It has that curing rate is fast, early strength is high, consolidation time is long,Later strength is high, consumption is few, gather materials on the spot, save the engineering time and reduce the advantages such as construction costs,In the engineering constructions such as highway, railway, subway, water conservancy, house, have broad application prospects.
Existing soil-solidified-agent is of a great variety, but can be divided into lime cement by the evolution of curing agentClass curing agent, slag silicate salt curing agent, high polymer class curing agent and electron ion solution class curing agent.Wherein, high polymer class curing agent also comprises the class curing agent such as various kinds of resin, fiber, surfactant.High polymer class curing agent, is that one utilizes surfactant to change grogs surface hydrophilic character, or profitForm stereochemical structure with crosslinked polymer and wrap up and cementing grogs, on the basis of soil compression, canObtain the soil-solidified-agent of good compression strength. It has that volume is few, cost is low, easy construction,The advantage that soil early strength and later stage strength of stability all can meet the demands etc.; But also there is water resistant in itPerformance Ratio is poor, meets the shortcoming that water intensity sharply reduces etc.
In order to solve the bottleneck of such technology, people have carried out many-sided grinding to high polymer class curing agentStudy carefully and obtain certain achievement, as patent of invention " a kind of macromolecule organic soil curing agent and syntheticMethod " (patent No.: CN105038806A) utilize 2-6 part magnesium chloride, 4-8 part calcium chloride,0.3-0.8 part calcium oxide, 0.3-0.8 part magnesia, 3-8 part acrylamide, 0.1-0.4 part mistakeAmmonium sulfate, 0.2-0.6 part potassium peroxydisulfate, 10-20 part soluble cellulose, 5-15 part carboxymethylSodium cellulosate, 0.5-1 part NaOH, 50-70 part water are prepared macromolecule organic soil curing agent.Although it has simple to operate, with low cost, instant effect, environmental protection and stronger anti-pressure abilityAdvantage, but water repelling property still could not reach solution effectively.
And for example patent of invention " a kind of basic soil curing agent and manufacture craft thereof the " (patent No.: CN102517033B) utilize polyvinyl alcohol, sodium alginate, polyacrylamide, calcium chloride, hydroxideAluminium, distilled water are prepared basic soil curing agent. Although it is simple that it has construction technology, compression strengthHeight, water stability is good, and freezing stability is good, and energy-conserving and environment-protective can extend the advantages such as Road Service Life,But it is only applicable to basic soil, range of application is narrow, thereby has limited promoting the use of of its.It does not disclose the data such as concrete compression strength, water stability, freezing stability yet simultaneously.
For another example patent of invention " high strong water resistant the composite soil stabilizer " (patent No.: CN102020990B) utilize adhesion component, enhancing component, dispersant, waterproofing agent of organosilicon, filler to prepare high-strengthWater-fast composite soil stabilizer. Although it has good water resistance and compression strength, and construction partyJust, pollution-free, can be widely used in the engineerings such as building, roadbed, water conservancy, but its length of penetration is notBe so desirable, easily broken through cured layer and affect solidification effect by rainwater, and then affect curing agentService life. Therefore, developing a kind of polymer soil-solidified-agent will play construction material extremely importantEffect.
Summary of the invention
Not so desirable technical problem for soil-solidified-agent length of penetration in above-mentioned prior art,Technical problem to be solved by this invention is to have proposed that a kind of length of penetration is large, compression strength is large, and resistance toThe polymer soil-solidified-agent that water-based energy is good.
The present invention for addressing the above problem taked technical scheme is:
A kind of polymer soil-solidified-agent, is made up of each component of following weight portion proportioning: common silicic acid5～7 parts of salt cement, 30～40 parts of binding agents, 10～20 parts of reinforcing agents, 3～5 parts of early strength agent,4～8 parts of waterproofing agents, 6～10 parts of fillers, 1～3 part of water reducer, surfactant 0.4～0.6 part, 2～4 parts of dispersants, 0.01～0.03 part of air entraining agent.
Preferably,
A kind of polymer soil-solidified-agent, is made up of each component of following weight portion proportioning: common silicic acid6 parts of salt cement, 35 parts of binding agents, 15 parts of reinforcing agents, 4 parts of early strength agent, 6 parts of waterproofing agents, fill outFill 8 parts of agent, 2 parts of water reducers, 0.5 part, surfactant, 3 parts of dispersants, air entraining agent 0.02Part.
Wherein, described binding agent is compound binding agent, by weight by polyurethane-modified polyacrylic acid5～7 parts of 20～26 parts of ester composite glue powders, 5～7 parts of sodium alginates, polyvinyl alcohol mix.
Described reinforcing agent is composite fortifier, by weight by 2～6 parts, calcium sulfate, silicon ash 5～9Part, 3～5 parts of polypropylene fibres mix.
Described early strength agent is complex accelerator, by weight by 1～2 part of triethanolamine, hydroxide2～3 parts of lithiums mix.
Described waterproofing agent is composite water-proof agent, by weight by 1～2 part, aluminium chloride, sodium metasilicate 1～1～2 part of 2 part, 1～2 part of sodium methyl silicate, calcium stearate mix.
Described filler is composite filler, by weight by 3～5 parts of talcum powder, perlite 3～5 parts mix.
Described water reducer is high-efficiency water-reducing agent of poly-carboxylic acid; Described surfactant is detergent alkylateSodium sulfonate; Described dispersant is hydroxyethylcellulose; Described air entraining agent is modified rosin resin.
Polyacrylate has the advantages such as good cementability, weatherability, ageing-resistant performance, and poly-ammoniaThe advantages such as that ester has is low temperature resistant, height adhesion, good resistance to water, by acrylate and polyurethaneCarry out the polyurethane-modified polyacrylate composite glue powder of composite modified preparation, can overcome separately lackPoint, is improved glue film performance significantly. In the time being added in soil, can make the soil disperseingParticle good bond together, and incrust, thereby improve its intensity. Although sodium alginate adhesionProperty is little, but it has thickening, dispersion, gelatification, especially can with soil generation chemical reactionGenerate insoluble salt, and be filled in hole or space between soil particle, can further improve curingThe intensity of soil, can also improve its impervious, water-proof function simultaneously. Polyvinyl alcohol is a kind of water-soluble high scoreSub-polymer, it has the features such as good cementability, film forming, oil resistivity, colloid protectiveness,Can make the soil particle strong bond of dispersion together, thereby improve its intensity.
It is high, acidproof, alkaline-resisting, antimicrobial etc. that polypropylene fibre (length 5～8mm) has intensityGood characteristic, can play reinforcement effect to soil, and makes soil settlement even, reduces polygon ground.Meanwhile, can also change the mechanical property of polyurethane-modified polyacrylate composite glue powder, improve and solidifyThe performance of soil.
Calcium ion in aluminium ion and curing agent in aluminium chloride (or in soil calcium ion), carboxylic acid ionThere is chemical reaction, form network-like complex, can make soil particle connect into as a whole,Improve the intensity of solidified earth. Sodium metasilicate can improve packing, intensity, the impermeability, freeze proof of solidified earthProperty and resistance to water etc. Its modulus is larger, and viscosity is larger, and cohesive force is just stronger, but can affect curing agentLength of penetration. Therefore, choosing modulus is 2.0～2.4 sodium metasilicate. When sodium methyl silicate enters soilAfter earth, there is chemical reaction, thereby form excellent water-repellent layer, also have simultaneously good penetrant crystalline,Microdilatancy, increase packing function. The water resistance of calcium stearate, can strengthen the water-fast of curing agentPerformance; Its lubrication, can improve curing agent length of penetration.
Talcum powder has good lubricity and anti-stickiness, can improve the dark of curing agent infiltration soilDegree, thereby the life-span of prolongation curing agent. Perlite can with the effect of the cementitious matter such as sodium metasilicate, cement, makeCuring agent has water resistance and heat-proof quality, wherein, heat insulation can reduce between polymer atom or pointChemical bond rupture between son. Perlite also has certain adsorption capacity simultaneously, can adsorb certain sunThe material such as ion and hydrone, improves curing agent performance.
High-efficiency water-reducing agent of poly-carboxylic acid, has absorption-peptizaiton, lubrication and wetting action, energyEnough reduce water content in soil, improve curing agent length of penetration, improve the intensity of solidified earth. Meanwhile,It belongs to again surfactant, can reduce the surface tension of water, improves curing agent length of penetration. ThisOutward, tiny soil particle has certain surface energy and adsorption capacity, can use with surfactant and send outRaw effect, thereby intrinsic cation in displacement soil, reduce soil micelle ξ electromotive force, attenuate soil micelleIt is agglomerating that electric double layer thickness is assembled soil particle, forms granuleization and chiltern structure, improves solidified earthIntensity.
The invention has the beneficial effects as follows:
The present invention passes through to adopt multiple compound, and is equipped with Portland cement, water reducer, surfaceUnder activating agent, dispersant, air entraining agent interact, acquisition length of penetration is large, compression strength is large, andThe polymer soil-solidified-agent that water resistance is good.
First, lime cement class curing agent and high polymer class curing agent compound use, overcome unitary class solidThe defect of agent, thereby the performance of raising curing agent; Secondly, polyurethane-modified polyacrylate is compoundRubber powder and high-efficiency water-reducing agent of poly-carboxylic acid can form carboxylate radical, and carboxylate radical is electronegative, can neutralizeSoil particle positive charge, realizes ion exchange, thereby improves the intensity of solidified earth; Then, hardResin acid calcium lubricity, talcum powder lubricity, anti-stickiness and water reducer lubrication property interact, and improveCuring agent length of penetration, thus curing agent service life extended; Finally, perlite and sodium metasilicate, waterThe cementitious matter effects such as mud, make curing agent have water resistance and heat-proof quality, thereby provide for high polymerA stable integral system, and then improve curing agent durability.
In addition, soil-solidified-agent disclosed in this invention have formula rationally, large, the resistance to compression of length of penetrationIntensity is large, and water resistance is good, can be applicable to the engineerings such as highway, railway, subway.
Detailed description of the invention
Embodiment 1
In this enforcement, the length 7mm of polypropylene fibre, the modulus of sodium metasilicate is 2.2;
A kind of polymer soil-solidified-agent, is made up of each component of following weight portion proportioning: common silicic acid6 parts of salt cement, 23 parts of polyurethane-modified polyacrylate composite glue powders, 6 parts of sodium alginates, poly-6 parts of vinyl alcohols, 4 parts, calcium sulfate, 7 parts of silicon ashes, 4 parts of polypropylene fibres, 2 parts of triethanolamines,2 parts of lithium hydroxides, 1 part, aluminium chloride, 1 part of sodium metasilicate, 2 parts of sodium methyl silicates, calcium stearate2 parts, 4 parts of talcum powder, 4 parts of perlites, 2 parts of high-efficiency water-reducing agent of poly-carboxylic acid, detergent alkylate0.5 part of sodium sulfonate, 3 parts of hydroxyethylcelluloses, 0.02 part of modified rosin resin.
Embodiment 2
In this enforcement, the length 5mm of polypropylene fibre, the modulus of sodium metasilicate is 2.0;
A kind of polymer soil-solidified-agent, is made up of each component of following weight portion proportioning: common silicic acid5 parts of salt cement, 20 parts of polyurethane-modified polyacrylate composite glue powders, 5 parts of sodium alginates, poly-5 parts of vinyl alcohols, 2 parts, calcium sulfate, 5 parts of silicon ashes, 3 parts of polypropylene fibres, 1 part of triethanolamine,2 parts of lithium hydroxides, 1 part, aluminium chloride, 1 part of sodium metasilicate, 1 part of sodium methyl silicate, calcium stearate1 part, 3 parts of talcum powder, 3 parts of perlites, 1 part of high-efficiency water-reducing agent of poly-carboxylic acid, detergent alkylate0.4 part of sodium sulfonate, 2 parts of hydroxyethylcelluloses, 0.01 part of modified rosin resin.
Embodiment 3
In this enforcement, the length 8mm of polypropylene fibre, the modulus of sodium metasilicate is 2.4;
A kind of polymer soil-solidified-agent, is made up of each component of following weight portion proportioning: common silicic acid7 parts of salt cement, 26 parts of polyurethane-modified polyacrylate composite glue powders, 7 parts of sodium alginates, poly-7 parts of vinyl alcohols, 6 parts, calcium sulfate, 9 parts of silicon ashes, 5 parts of polypropylene fibres, 2 parts of triethanolamines,3 parts of lithium hydroxides, 2 parts, aluminium chloride, 2 parts of sodium metasilicate, 2 parts of sodium methyl silicates, calcium stearate2 parts, 5 parts of talcum powder, 5 parts of perlites, 3 parts of high-efficiency water-reducing agent of poly-carboxylic acid, detergent alkylate0.6 part of sodium sulfonate, 4 parts of hydroxyethylcelluloses, 0.03 part of modified rosin resin.
In addition, for effect of soil-solidified-agent of the present invention is described, applicant has carried out following performance and has surveyedExamination:
Test example 1: compression strength and immersion absorptivity
Adopt sandy soil as basic soil sample, before using, cross 2.36mm round-hole mesh, by the invention process(comparative example 1 adopts Portland cement 32.5 for curing agent, contrast for example 1～3 and comparative exampleExample 2 adopts high polymer soil-solidified-agent in prior art, and its main component is ethylene-vinyl acetateCopolymer etc.) curing agent add in soil to be reinforced with certain proportion respectively, according to routineThe engineering construction method construction of Consolidation Agent Reinforced Earth, then according to " highway engineering stabilized with inorganic binderTesting of materials code " (JTJ057-94) measure respectively 7 days unconfined compressive strengths and 7 of compacted soilIt water absorption rate that soaks, testing result is in table 1.
Table 1 is 7 days compression strength of curing agent and 7 days immersion water absorption rate testing results
| Curing agent type | Curing agent: soil | 7 days unconfined compressive strengths (MPa) | 7 days immersion water absorption rates (%) |
| Embodiment 1 | 10：90 | 12.34 | 0.86 |
| Embodiment 2 | 10：90 | 11.56 | 0.90 |
| Embodiment 3 | 10：90 | 11.78 | 0.88 |
| Comparative example 1 | 10：90 | 2.86 | 2.52 |
| Comparative example 2 | 10：90 | 10.18 | 0.95 |
As can be seen from Table 1, compared with prior art, the present invention has high compression strength, lowImmersion water absorption rate, this has shown that curing agent provided by the present invention can significantly improve the intensity of compacted soilAnd water resistance.
Test example 2: frost resistance
This test is mainly with reference to concrete antifreezing performance test method in prior art, to the invention process(comparative example 1 adopts Portland cement 32.5 for curing agent, contrast for example 1～3 and comparative exampleExample 2 adopts high polymer soil-solidified-agent in prior art, and its main component is ethylene-vinyl acetateCopolymer etc.) curing agent carry out anti-freezing property detection, testing result is in table 2.
Table 2 is curing agent frost resistance testing result
As can be seen from Table 2, compared with prior art, the present invention has low loss of strength rate, thisShow that curing agent provided by the present invention has good anti-freezing property.
Test example 3: water stability coefficient, length of penetration, infiltration coefficient
This test mainly with reference to prior art to the embodiment of the present invention 1～3 and comparative example 1 (comparative example 1Adopt high polymer soil-solidified-agent in prior art, its main component is ethylene-vinyl acetate copolymerizationThing etc.) curing agent carry out water stability coefficient, length of penetration, infiltration coefficient and detect, testing resultIn table 3.
Table 3 is curing agent performance test results
| Curing agent type | 7 sky and water stability coefficients (%) | Length of penetration (mm) | Infiltration coefficient (cm/s) |
| Embodiment 1 | 92.4 | 18 | 8×10-9 |
| Embodiment 2 | 90.8 | 17 | 8×10-9 |
| Embodiment 3 | 91.9 | 17 | 9×10-9 |
| Comparative example 1 | 87.2 | 12 | 1×10-8 |
As can be seen from Table 3, compared with prior art, the present invention have high water stability coefficient,Large length of penetration, low infiltration coefficient, this has shown that curing agent provided by the present invention has wellWater stability, durability, impermeability.
Certainly, just the preferred embodiments of the disclosure is described in detail above, not with thisLimit practical range of the present invention, all equivalences of doing according to principle of the present invention, structure and structure becomeChange, all should be covered by protection scope of the present invention.
Claims (2)
1. a polymer soil-solidified-agent, is characterized in that: by each group of following weight portion proportioningPoint make: 5～7 parts of Portland cements, 30～40 parts of binding agents, 10～20 parts of reinforcing agents,3～5 parts of early strength agent, 4～8 parts of waterproofing agents, 6～10 parts of fillers, 1～3 part of water reducer, table0.4～0.6 part of surface-active agent, 2～4 parts of dispersants, 0.01～0.03 part of air entraining agent;
Wherein, described binding agent is compound binding agent, by weight by polyurethane-modified polyacrylic acid5～7 parts of 20～26 parts of ester composite glue powders, 5～7 parts of sodium alginates, polyvinyl alcohol mix;
Described reinforcing agent is composite fortifier, by weight by 2～6 parts, calcium sulfate, silicon ash 5～9Part, 3～5 parts of polypropylene fibres mix;
Described early strength agent is complex accelerator, by weight by 1～2 part of triethanolamine, hydroxide2～3 parts of lithiums mix;
Described waterproofing agent is composite water-proof agent, by weight by 1～2 part, aluminium chloride, sodium metasilicate 1～1～2 part of 2 part, 1～2 part of sodium methyl silicate, calcium stearate mix;
Described filler is composite filler, by weight by 3～5 parts of talcum powder, perlite 3～5 parts mix;
Described water reducer is high-efficiency water-reducing agent of poly-carboxylic acid; Described surfactant is detergent alkylateSodium sulfonate; Described dispersant is hydroxyethylcellulose; Described air entraining agent is modified rosin resin.
2. polymer soil-solidified-agent according to claim 1, is characterized in that: by belowEach component of weight portion proportioning is made: 6 parts of Portland cements, 35 parts of binding agents, reinforcing agent15 parts, 4 parts of early strength agent, 6 parts of waterproofing agents, 8 parts of fillers, 2 parts of water reducers, surface-active0.5 part of agent, 3 parts of dispersants, 0.02 part of air entraining agent.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110055083A (en) * | 2019-05-29 | 2019-07-26 | 中科盛联(北京)新材料有限公司 | Polymeric soil curing agent and preparation method thereof |
| CN111058346A (en) * | 2019-12-30 | 2020-04-24 | 长沙理工大学 | Carbon rock roadbed structure and construction method thereof |
| CN112299811A (en) * | 2020-01-09 | 2021-02-02 | 兰方环保工程(南京)有限公司 | Soil curing agent for road base and preparation method thereof |
| CN112982370A (en) * | 2021-02-05 | 2021-06-18 | 江苏工程职业技术学院 | Method for constructing pavement base by adopting soil stabilizer |
| CN113233813A (en) * | 2021-06-01 | 2021-08-10 | 浙江路兴环保科技有限公司 | High molecular powder adhesive capable of improving adhesive strength of cement and soil |
| CN114989831A (en) * | 2022-05-12 | 2022-09-02 | 成都城投建筑科技投资管理集团有限公司 | Modified high-molecular polymer soil curing agent |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN111058346A (en) * | 2019-12-30 | 2020-04-24 | 长沙理工大学 | Carbon rock roadbed structure and construction method thereof |
| CN111058346B (en) * | 2019-12-30 | 2022-02-15 | 长沙理工大学 | Carbon rock roadbed structure and construction method thereof |
| CN112299811A (en) * | 2020-01-09 | 2021-02-02 | 兰方环保工程(南京)有限公司 | Soil curing agent for road base and preparation method thereof |
| CN112982370A (en) * | 2021-02-05 | 2021-06-18 | 江苏工程职业技术学院 | Method for constructing pavement base by adopting soil stabilizer |
| CN113233813A (en) * | 2021-06-01 | 2021-08-10 | 浙江路兴环保科技有限公司 | High molecular powder adhesive capable of improving adhesive strength of cement and soil |
| CN114989831A (en) * | 2022-05-12 | 2022-09-02 | 成都城投建筑科技投资管理集团有限公司 | Modified high-molecular polymer soil curing agent |
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| CN105602571B (en) | 2018-06-29 |
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