CN105524620A - A novel soil stabilizer - Google Patents
A novel soil stabilizer Download PDFInfo
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- CN105524620A CN105524620A CN201511015639.8A CN201511015639A CN105524620A CN 105524620 A CN105524620 A CN 105524620A CN 201511015639 A CN201511015639 A CN 201511015639A CN 105524620 A CN105524620 A CN 105524620A
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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
Abstract
The invention discloses a novel soil stabilizer, and belongs to the technical field of building materials. The soil stabilizer is prepared from following components by weight: 4-6 parts of common silicate cement, 25-35 parts of an adhesive, 15-25 parts of a fortifier, 4-8 parts of an early strength agent, 3-6 parts of a waterproof agent, 6-8 parts of a filler, 1-3 parts of a water reducer, 3-7 parts of a dispersant and 0.01-0.03 part of an air entraining agent. The soil stabilizer is characterized by a reasonable formula, a large depth of penetration (17 mm), high compressive strength (with unconfined compressive strength after 7 days being 12.23 MPa) and good waterproof performance (with the water absorption rate after water soaking for 7 days being 0.85%), and can be used for highways, railways, subways, and other projects.
Description
Technical field
The present invention relates to a kind of soil curing agent, belong to building material technical field.
Background technology
Soil-solidified-agent is a kind of matrix material for improving soil engineering performance synthesized by multiple inorganic, organic materials.It has, and curing speed is fast, early strength is high, consolidation time is long, later strength is high, consumption is few, gather materials on the spot, save the advantage such as engineering time and reduction construction costs, has broad application prospects in the engineering constructions such as highway, railway, subway, water conservancy, house.
Existing soil-solidified-agent is of a great variety, but can be divided into lime cement class solidifying agent, slag silicate salt solidifying agent, superpolymer class solidifying agent and electron ion solution class solidifying agent by the evolution of solidifying agent.Wherein, superpolymer class solidifying agent also comprises the class solidifying agent such as various kinds of resin, fiber, tensio-active agent.Superpolymer class solidifying agent, is that one utilizes tensio-active agent to change grogs surface hydrophilic character, or utilizes crosslinked polymer to form three-dimensional arrangement parcel and cementing grogs, on the basis of soil compression, can obtain the soil-solidified-agent of good ultimate compression strength.The advantage that it has that volume is few, cost is low, easy construction, soil early strength and later stage strength of stability all can meet the demands etc.; But it is poor that it also exists water repelling property, meet the shortcoming that water intensity sharply reduces etc.
In order to solve the bottleneck of such technology, people have carried out many-sided research to superpolymer class solidifying agent and have obtained certain achievement, as patent of invention " a kind of polymer organic soil solidifying agent and synthetic method thereof " (patent No.: CN105038806A) utilizes 2-6 part magnesium chloride, 4-8 part calcium chloride, 0.3-0.8 part calcium oxide, 0.3-0.8 part magnesium oxide, 3-8 part acrylamide, 0.1-0.4 part ammonium persulphate, 0.2-0.6 part Potassium Persulphate, 10-20 part soluble cellulose, 5-15 part Xylo-Mucine, 0.5-1 part sodium hydroxide, 50-70 part water prepares polymer organic soil solidifying agent.Although it has simple to operate, with low cost, instant effect, the advantage of environmental protection and stronger anti-pressure ability, water repelling property still could not reach and effectively solve.
And for example patent of invention " a kind of alkaline soil solidifying agent and manufacture craft thereof " (patent No.: CN102517033B) utilizes polyvinyl alcohol, sodium alginate, polyacrylamide, calcium chloride, aluminium hydroxide, distilled water to prepare alkaline soil solidifying agent.Although it is simple that it has construction technology, ultimate compression strength is high, and water stability is good, and freezing stability is good, energy-conserving and environment-protective, can extend the advantages such as Road Service Life, but it is only applicable to alkaline soil, and range of application is narrow, thus limits promoting the use of of its.It does not disclose the data such as concrete ultimate compression strength, water stability, freezing stability yet simultaneously.
For another example patent of invention " high strong water resistant composite soil stabilizer " (patent No.: CN102020990B) utilizes adhesion component, enhancement component, dispersion agent, waterproofing agent of organosilicon, filler to prepare high strong water resistant composite soil stabilizer.Although it has good water resistance and ultimate compression strength, and easy construction, pollution-free, the engineerings such as building, roadbed, water conservancy can be widely used in, but its depth of penetration is not so desirable, is easily broken through cured layer by rainwater and affects solidification effect, and then affecting the work-ing life of solidifying agent.Therefore, develop a kind of soil curing agent and will play very important effect to material of construction.
Summary of the invention
Be not so desirable technical problem for soil-solidified-agent depth of penetration in above-mentioned prior art, technical problem to be solved by this invention proposes that a kind of depth of penetration is large, ultimate compression strength large, and the soil curing agent that water resistance is good.
The present invention for the taked technical scheme that solves the problem is:
A kind of soil curing agent, is made up of each component of following weight: ordinary Portland cement 4 ~ 6 parts, binding agent 25 ~ 35 parts, toughener 15 ~ 25 parts, hardening accelerator 4 ~ 8 parts, water-resisting agent 3 ~ 6 parts, weighting agent 6 ~ 8 parts, water reducer 1 ~ 3 part, dispersion agent 3 ~ 7 parts, air entrapment agent 0.01 ~ 0.03 part.
Preferably,
A kind of soil curing agent, is made up of each component of following weight: ordinary Portland cement 5 parts, binding agent 30 parts, toughener 20 parts, hardening accelerator 6 parts, water-resisting agent 5 parts, weighting agent 7 parts, water reducer 2 parts, dispersion agent 5 parts, air entrapment agent 0.02 part.
Wherein, described binding agent is compound binding agent, is mixed by weight by polyurethane-modified polyacrylic ester composite glue powder 20 ~ 28 parts, sodium alginate 5 ~ 7 parts.
Described toughener is composite fortifier, is mixed by weight by 4 ~ 8 parts, calcium sulfate, silicon ash 8 ~ 12 parts, polypropylene fibre 3 ~ 5 parts.
Described hardening accelerator is complex accelerator, is mixed by weight by tri-isopropanolamine 2 ~ 4 parts, lithium hydroxide 2 ~ 4 parts.
Described water-resisting agent is composite water-proof agent, is mixed by weight by 1 ~ 2 part, aluminum chloride, water glass 1 ~ 2 part, sodium methyl silicate 1 ~ 2 part.
Described weighting agent is composite filler, is mixed by weight by talcum powder 3 ~ 4 parts, perlite 3 ~ 4 parts.
Described water reducer is high-efficiency water-reducing agent of poly-carboxylic acid; Described dispersion agent is Natvosol; Described air entrapment agent is modified rosin resin.
Polyacrylic ester has the advantages such as good cementability, weathering resistance, ageing-resistant performance, and urethane has low temperature resistant, advantage such as height tackiness, excellent water tolerance etc., acrylate and urethane are carried out the polyurethane-modified polyacrylic ester composite glue powder of composite modified preparation, respective shortcoming can be overcome, glue film performance is improved significantly.When being added in soil, the soil particle good bond of dispersion can be made together, and incrust, thus improve its intensity.Although sodium alginate tackiness is little, but it has thickening, dispersion, pectisation, especially can generate insoluble salt with soil generation chemical reaction, and be filled in hole or space between soil particle, can further improve the intensity of solidified earth, its impervious, water-proof function can also be improved simultaneously.
Polypropylene fibre (length 5 ~ 8mm) has the good characteristics such as intensity is high, acidproof, alkaline-resisting, antimicrobial, can play reinforcement effect to soil, and makes soil settlement even, reduces polygonal marking.Meanwhile, the mechanical property of polyurethane-modified polyacrylic ester composite glue powder can also be changed, improve the performance of solidified earth.
Calcium ion in aluminum ion and solidifying agent in aluminum chloride (or in soil calcium ion), carboxylic acid ion generation chemical reaction, form network-like title complex, soil particle can be made to connect into as a whole, improve the intensity of solidified earth.Water glass can improve the degree of compactness of solidified earth, intensity, impermeability, frost resistance and water tolerance etc.Its modulus is larger, and viscosity is larger, and cohesive force is stronger, but can affect solidifying agent depth of penetration.Therefore, the water glass that modulus is 2.0 ~ 2.4 is chosen.After sodium methyl silicate enters soil, there is chemical reaction, thus form excellent water-repellent layer, also there is good penetrant crystalline, microdilatancy, increase degree of compactness function simultaneously.
Talcum powder has excellent oilness and anti-stickiness, can improve the degree of depth of solidifying agent permeable soil, thus extends the life-span of solidifying agent.Perlite can with the effect of the agglutinate such as water glass, cement, make solidifying agent have water resistance and heat-proof quality, wherein, heat insulationly can reduce between polymkeric substance atom or intermolecular chemical bond rupture.Perlite also has certain adsorptive power simultaneously, can adsorb the materials such as certain positively charged ion and water molecules, improves solidifying agent performance.
High-efficiency water-reducing agent of poly-carboxylic acid, has absorption-dissemination, lubrication and wetting action, can reduce water content in soil, improves solidifying agent depth of penetration, improves the intensity of solidified earth.Meanwhile, it belongs to tensio-active agent again, can reduce the surface tension of water, improves solidifying agent depth of penetration.In addition; tiny soil particle has certain surface energy and adsorptive power; can have an effect with tensio-active agent; thus intrinsic positively charged ion in displacement soil; reduce soil micelle ξ electromotive force; it is agglomerating that thinning native micelle electrostatic double layer thickness makes soil particle assemble, and forms pellet and chiltern structure, improves solidified earth intensity.
The invention has the beneficial effects as follows:
The present invention is by adopting multiple mixture, and under being equipped with ordinary Portland cement, water reducer, dispersion agent, air entrapment agent interaction, acquisition depth of penetration is large, ultimate compression strength large, and the soil curing agent that water resistance is good.
First, lime cement class solidifying agent and superpolymer class solidifying agent compound use, overcome the defect of unitary class solidifying agent, thus improve the performance of solidifying agent; Secondly, polyurethane-modified polyacrylic ester composite glue powder and high-efficiency water-reducing agent of poly-carboxylic acid can form carboxylate radical, and carboxylate radical is electronegative, can sweetening of the soil particle positive charge, realize ion exchange, thus improve the intensity of solidified earth; Then, talcum powder oilness, anti-stickiness and water reducer lubricating property interact, and improve solidifying agent depth of penetration, thus extend solidifying agent work-ing life; Finally, perlite and the effect of the agglutinate such as water glass, cement, make solidifying agent have water resistance and heat-proof quality, thus provide a stable integral system for superpolymer, and then improve solidifying agent weather resistance.
In addition, soil-solidified-agent disclosed in this invention have formula rationally, depth of penetration is large, ultimate compression strength is large, and water resistance is good, can be applicable to the engineerings such as highway, railway, subway.
Embodiment
Embodiment 1
In this enforcement, the length 7mm of polypropylene fibre, the modulus of water glass is 2.2;
A kind of soil curing agent, is made up of each component of following weight: ordinary Portland cement 5 parts, polyurethane-modified polyacrylic ester composite glue powder 24 parts, sodium alginate 6 parts, 6 parts, calcium sulfate, silicon ash 10 parts, polypropylene fibre 4 parts, tri-isopropanolamine 3 parts, lithium hydroxide 3 parts, 1 part, aluminum chloride, water glass 2 parts, sodium methyl silicate 2 parts, talcum powder 4 parts, perlite 3 parts, high-efficiency water-reducing agent of poly-carboxylic acid 2 parts, Natvosol 5 parts, modified rosin resin 0.02 part.
Embodiment 2
In this enforcement, the length 5mm of polypropylene fibre, the modulus of water glass is 2.0;
A kind of soil curing agent, is made up of each component of following weight: ordinary Portland cement 4 parts, polyurethane-modified polyacrylic ester composite glue powder 20 parts, sodium alginate 5 parts, 4 parts, calcium sulfate, silicon ash 8 parts, polypropylene fibre 3 parts, tri-isopropanolamine 2 parts, lithium hydroxide 2 parts, 1 part, aluminum chloride, water glass 1 part, sodium methyl silicate 1 part, talcum powder 3 parts, perlite 3 parts, high-efficiency water-reducing agent of poly-carboxylic acid 1 part, Natvosol 3 parts, modified rosin resin 0.01 part.
Embodiment 3
In this enforcement, the length 8mm of polypropylene fibre, the modulus of water glass is 2.4;
A kind of soil curing agent, is made up of each component of following weight: ordinary Portland cement 6 parts, polyurethane-modified polyacrylic ester composite glue powder 28 parts, sodium alginate 7 parts, 8 parts, calcium sulfate, silicon ash 12 parts, polypropylene fibre 5 parts, tri-isopropanolamine 4 parts, lithium hydroxide 4 parts, 2 parts, aluminum chloride, water glass 2 parts, sodium methyl silicate 2 parts, talcum powder 4 parts, perlite 4 parts, high-efficiency water-reducing agent of poly-carboxylic acid 3 parts, Natvosol 7 parts, modified rosin resin 0.03 part.
In addition, in order to effect of soil-solidified-agent of the present invention is described, applicant carried out following performance test:
Test example 1: ultimate compression strength and immersion specific absorption
Adopt sandy soil as basic soil sample, 2.36mm round hole sieve is crossed before using, by the embodiment of the present invention 1 ~ 3 and comparative example, (comparative example 1 adopts ordinary Portland cement 32.5 for solidifying agent, comparative example 2 adopts superpolymer soil-solidified-agent in prior art, its main component is ethylene-vinyl acetate copolymer etc.) solidifying agent add in soil to be reinforced with certain proportion respectively, the engineering construction method construction of Consolidation Agent Reinforced Earth conveniently, then 7 days unconfined compression strengths and 7 days immersion water-intake rates of compacted soil is measured respectively according to " highway engineering stabilized with inorganic binder testing of materials code " (JTJ057-94), detected result is in table 1.
Table 1 is solidifying agent 7 days ultimate compression strength and 7 days immersion water-intake rate detected results
| Solidifying agent type | Solidifying agent: soil | 7 days unconfined compression strengths (MPa) | Immersion water-intake rate (%) in 7 days |
| Embodiment 1 | 10：90 | 12.23 | 0.85 |
| Embodiment 2 | 10：90 | 11.64 | 0.89 |
| Embodiment 3 | 10：90 | 11.58 | 0.91 |
| Comparative example 1 | 10：90 | 2.83 | 2.54 |
| Comparative example 2 | 10：90 | 10.18 | 0.98 |
As can be seen from Table 1, compared with prior art, the present invention has high ultimate compression strength, low immersion water-intake rate, this demonstrates intensity and water resistance that solidifying agent provided by the present invention can significantly improve compacted soil.
Test example 2: frost resistance
This test is main with reference to concrete antifreezing performance test method in prior art, to the embodiment of the present invention 1 ~ 3 and comparative example, (comparative example 1 adopts that ordinary Portland cement 32.5 is solidifying agent, comparative example 2 adopts superpolymer soil-solidified-agent in prior art, its main component is ethylene-vinyl acetate copolymer etc.) solidifying agent carry out anti-freezing property detection, detected result is in table 2.
Table 2 is solidifying agent frost resistance detected result
As can be seen from Table 2, compared with prior art, the present invention has low loss of strength rate, this demonstrates solidifying agent provided by the present invention and has good anti-freezing property.
Test example 3: water stability coefficient, depth of penetration, permeability coefficient
This test is main, and with reference to prior art, to the embodiment of the present invention 1 ~ 3 and comparative example 1, (comparative example 1 adopts superpolymer soil-solidified-agent in prior art, its main component is ethylene-vinyl acetate copolymer etc.) solidifying agent carry out water stability coefficient, depth of penetration, permeability coefficient detect, detected result is in table 3.
Table 3 is solidifying agent performance test results
| Solidifying agent type | 7 sky and water stability coefficients (%) | Depth of penetration (mm) | Permeability coefficient (cm/s) |
| Embodiment 1 | 92.3 | 17 | 8×10 -9 |
| Embodiment 2 | 91.8 | 16 | 9×10 -9 |
| Embodiment 3 | 90.9 | 15 | 9×10 -9 |
| Comparative example 1 | 87.2 | 11 | 1×10 -8 |
As can be seen from Table 3, compared with prior art, the present invention has high water stability coefficient, large depth of penetration, low permeability coefficient, this demonstrates solidifying agent provided by the present invention and has good water stability, wearing quality, impermeability.
Certainly, just the preferred embodiments of the disclosure is described in detail above, not limits practical range of the present invention with this, and all equivalence changes done according to principle of the present invention, structure and structure, all should be covered by protection scope of the present invention.
Claims (2)
1. a soil curing agent, is characterized in that: be made up of each component of following weight: ordinary Portland cement 4 ~ 6 parts, binding agent 25 ~ 35 parts, toughener 15 ~ 25 parts, hardening accelerator 4 ~ 8 parts, water-resisting agent 3 ~ 6 parts, weighting agent 6 ~ 8 parts, water reducer 1 ~ 3 part, dispersion agent 3 ~ 7 parts, air entrapment agent 0.01 ~ 0.03 part;
Wherein, described binding agent is compound binding agent, is mixed by weight by polyurethane-modified polyacrylic ester composite glue powder 20 ~ 28 parts, sodium alginate 5 ~ 7 parts;
Described toughener is composite fortifier, is mixed by weight by 4 ~ 8 parts, calcium sulfate, silicon ash 8 ~ 12 parts, polypropylene fibre 3 ~ 5 parts;
Described hardening accelerator is complex accelerator, is mixed by weight by tri-isopropanolamine 2 ~ 4 parts, lithium hydroxide 2 ~ 4 parts;
Described water-resisting agent is composite water-proof agent, is mixed by weight by 1 ~ 2 part, aluminum chloride, water glass 1 ~ 2 part, sodium methyl silicate 1 ~ 2 part;
Described weighting agent is composite filler, is mixed by weight by talcum powder 3 ~ 4 parts, perlite 3 ~ 4 parts;
Described water reducer is high-efficiency water-reducing agent of poly-carboxylic acid; Described dispersion agent is Natvosol; Described air entrapment agent is modified rosin resin.
2. soil curing agent according to claim 1, is characterized in that: be made up of each component of following weight: ordinary Portland cement 5 parts, binding agent 30 parts, toughener 20 parts, hardening accelerator 6 parts, water-resisting agent 5 parts, weighting agent 7 parts, water reducer 2 parts, dispersion agent 5 parts, air entrapment agent 0.02 part.
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| CN107916112A (en) * | 2017-10-26 | 2018-04-17 | 连云港世博工程设计研究院有限公司 | A kind of soil curing agent |
| CN107915459A (en) * | 2017-12-01 | 2018-04-17 | 马小良 | A kind of soil stabilizer |
| CN108707460A (en) * | 2018-06-15 | 2018-10-26 | 中国铁道科学研究院铁道建筑研究所 | A kind of soil-solidified-agent and preparation method thereof |
| CN109135761A (en) * | 2018-10-12 | 2019-01-04 | 西安同鑫伟业环保科技有限公司 | A kind of environment-friendly novel soil-solidified-agent |
| JP2019069871A (en) * | 2017-10-06 | 2019-05-09 | 株式会社日本触媒 | Cement strength improver, cement additive and cement composition |
| CN109761575A (en) * | 2019-03-06 | 2019-05-17 | 山东大学 | A kind of TRD diaphragm wall curing agent and its application method and application |
| CN112459035A (en) * | 2020-11-25 | 2021-03-09 | 中国水利水电第七工程局有限公司 | Treatment method of municipal pipe network construction muck with remarkable tensile effect |
| CN115636650A (en) * | 2021-07-20 | 2023-01-24 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Soil curing agent and preparation method thereof |
| CN115849773A (en) * | 2022-08-10 | 2023-03-28 | 河南土化石环保建材有限公司 | Soil curing agent and preparation method thereof |
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| JP2019069871A (en) * | 2017-10-06 | 2019-05-09 | 株式会社日本触媒 | Cement strength improver, cement additive and cement composition |
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| CN107916112A (en) * | 2017-10-26 | 2018-04-17 | 连云港世博工程设计研究院有限公司 | A kind of soil curing agent |
| CN107915459B (en) * | 2017-12-01 | 2020-07-14 | 江苏爱佳福如土壤修复有限公司 | Soil stabilizer |
| CN107915459A (en) * | 2017-12-01 | 2018-04-17 | 马小良 | A kind of soil stabilizer |
| CN108707460A (en) * | 2018-06-15 | 2018-10-26 | 中国铁道科学研究院铁道建筑研究所 | A kind of soil-solidified-agent and preparation method thereof |
| CN109135761A (en) * | 2018-10-12 | 2019-01-04 | 西安同鑫伟业环保科技有限公司 | A kind of environment-friendly novel soil-solidified-agent |
| CN109761575B (en) * | 2019-03-06 | 2020-06-23 | 山东大学 | TRD continuous wall curing agent and using method and application thereof |
| CN109761575A (en) * | 2019-03-06 | 2019-05-17 | 山东大学 | A kind of TRD diaphragm wall curing agent and its application method and application |
| CN112459035A (en) * | 2020-11-25 | 2021-03-09 | 中国水利水电第七工程局有限公司 | Treatment method of municipal pipe network construction muck with remarkable tensile effect |
| CN115636650A (en) * | 2021-07-20 | 2023-01-24 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Soil curing agent and preparation method thereof |
| CN115849773A (en) * | 2022-08-10 | 2023-03-28 | 河南土化石环保建材有限公司 | Soil curing agent and preparation method thereof |
| CN115849773B (en) * | 2022-08-10 | 2024-02-13 | 河南土化石环保建材有限公司 | Soil curing agent and preparation method thereof |
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