WO2009118376A1 - Procédé pour consolider des sols ou des fondations - Google Patents

Procédé pour consolider des sols ou des fondations Download PDF

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Publication number
WO2009118376A1
WO2009118376A1 PCT/EP2009/053582 EP2009053582W WO2009118376A1 WO 2009118376 A1 WO2009118376 A1 WO 2009118376A1 EP 2009053582 W EP2009053582 W EP 2009053582W WO 2009118376 A1 WO2009118376 A1 WO 2009118376A1
Authority
WO
WIPO (PCT)
Prior art keywords
latex
soil
component
foundation
water
Prior art date
Application number
PCT/EP2009/053582
Other languages
German (de)
English (en)
Inventor
Axel Siegner
Original Assignee
Poligate Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Poligate Limited filed Critical Poligate Limited
Priority to EP09724918A priority Critical patent/EP2279232A1/fr
Priority to RU2010143892/04A priority patent/RU2503768C2/ru
Priority to AP2010005376A priority patent/AP2010005376A0/en
Publication of WO2009118376A1 publication Critical patent/WO2009118376A1/fr

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/02—Macromolecular compounds
    • C04B26/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
    • C04B26/30—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds
    • C04B26/32—Compounds having one or more carbon-to-metal or carbon-to-silicon linkages ; Other silicon-containing organic compounds; Boron-organic compounds containing silicon
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C3/00—Foundations for pavings
    • E01C3/04—Foundations produced by soil stabilisation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00732—Uses not provided for elsewhere in C04B2111/00 for soil stabilisation
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
    • C04B2111/0075—Uses not provided for elsewhere in C04B2111/00 for road construction

Definitions

  • the invention relates to methods for soil or foundation consolidation and the use of the solidifiers for consolidating soil or soil containing materials.
  • a soil layer is typically removed first, and after flattening the surface, a gravel support layer is applied, followed by an asphalt base course, an asphalt binder course and an asphalt face course.
  • the gravel support layer often has a thickness of 50 to 70 cm, and thus has the largest thickness of the entire coating.
  • the soil is usually also excavated and filled with a straightening with the foundation material.
  • WO 97/23433 relates to dispersions and their use in concrete mixtures.
  • DE-A-1 571 449 relates to mortar compositions which, besides Portland cement, filler and water, also contain a polymer emulsion and a cellulose derivative.
  • US 3,943,078 relates to a soil treatment composition containing a synthetic latex material, hydroxyethyl cellulose, metal salts and powdered citric acid.
  • the object of the present invention is to provide a method for soil or foundation consolidation, which allows to carry out without removal of the old soil and its disposal in a very simple way earth-engineering measures for soil improvement, soil consolidation and soil stabilization.
  • the object is achieved by a method for strengthening of soils and foundations, in which a soil or Bodenungsfestfestiger, optionally after mixing with water and optionally together with cement and / or fillers in the ground or the foundation with mixing with the ground or Incorporated foundation. It may be at the bottom of the ground of a traffic area, z. As a road, a path or a, z. B. paved, square act. In general, any surface can be treated according to the invention.
  • the soil and Bodenungsfestfestiger invention is incorporated with a cutter in the soil to be consolidated by milling. This eliminates the usually necessary and costly replacement of the resulting soil.
  • liquid composition of the invention is over a
  • Microprocessor-controlled pump sprayed into the catchment area of a milling machine and mixed by the tiller with the ground or soil.
  • cement or a (further) filler can be pre-scattered on the ground or the foundation and also introduced into the ground with the milling cutter.
  • the entire road surface layer can be mixed with the miller with the addition of the inventive solidifier.
  • soil or foundation strengtheners or corresponding agents which comprise a latex polymer A, a thickener B, a defoamer C and at least one salt or hydroxide D of an alkali metal or alkaline earth metal and optionally water.
  • soil or foundation consolidators comprising a latex polymer A, a thickener B, a defoamer C and at least one salt or hydroxide D of an alkali or alkaline earth metal can be incorporated into existing soil after incorporation into water with mixing, wherein after a short setting time already sets the solidifying effect.
  • the existing soil is simply milled under entry of the invention Boden- or Fundamentver festigers and subsequently tied.
  • the solidifier used according to the invention is a polymer-based, preferably water-soluble, environmentally neutral and non-toxic additive for use in soil-engineering measures for soil improvement, soil stabilization and soil stabilization with hydraulic binders.
  • the solidifier according to the invention can be present, for example, in free-flowing solid form and 0.1 to 50 wt .-%, preferably 0.5 to 25 wt .-% of component A, 0.05 to 5 wt .-%, preferably 0.1 to 2 wt .-% of component B,
  • the solidifier is preferably present in powder, flake or granular form. Other possible flowable solid forms are known to those skilled in the art.
  • Component C may be present or absent.
  • the solidifying agent may be in a flowable liquid form and may contain 3 to 95% by weight, preferably 30 to 80% by weight of a mixture as described above in 5 to 97% by weight, preferably 20 to 70% by weight. Contain water.
  • the solidifying agent in flowable solid form can be made into the flowable liquid form simply by incorporation in water and dissolving or dispersing therein.
  • the flowable liquid form can be introduced directly into the soil for incorporation, while the flowable solid form allows for simplified storage and transportation.
  • the introduction into water can be done immediately before use.
  • the latex polymer A may be used in the form of a powder or a latex solution.
  • An aqueous latex solution preferably has one
  • the proportion of the latex is preferably 0.5 to 20% by weight, particularly preferably 1 to
  • the proportion of the thickener B is preferably 0.1 to 5 wt .-%, particularly preferably 0.1 to 2 wt .-%.
  • the proportion of component D is preferably 0.01 to 10 wt .-%, particularly preferably 0.05 to 5 wt .-%.
  • the proportion of antifoam C, if it is used as an emulsion, is preferably 0.05 to 5 wt .-%, particularly preferably 0.1 to 2 wt .-%.
  • latex polymer A any suitable latex polymers which are soluble or dispersible in water can be used.
  • the latex polymer A is preferably a styrene-butadiene latex (SBR), (meth) acrylate latex, ethylene-vinyl acetate latex, ethylene / propylene latex, ethylene / propylene-diene latex (EPDM), butadiene rubber.
  • NBR Acrylonitrile latex
  • SI silicone latex
  • BR polybutadiene latex
  • natural rubber latex or a mixture of two or more thereof.
  • the latex can be uncrosslinked or crosslinked. It is also possible to use an uncrosslinked latex together with a crosslinking agent. In particular, chemical crosslinkers are included.
  • the molecular weight of the polymer on which the latex is based can be freely selected within wide limits. Typically, the molecular weight is 300 to 1,000,000, preferably 500 to 100,000 g / mol (number average molecular weight as determined by gel permeation chromatography).
  • a crosslinked latex or a latex is used together with a crosslinking agent.
  • Suitable latexes are available commercially and can be obtained from a variety of sources. Particular preference is given to using acrylate, styrene-butadiene or ethylene-vinyl acetate latexes.
  • the latexes are generally colloidal dispersions of polymers in aqueous media which have low viscosities even at high polymer concentrations.
  • Synthetic latexes are typically prepared by emulsion polymerization of suitable monomers or by dispersing polymers in one
  • the latices may contain additives such as protective colloids,
  • Stabilizers pigments and vulcanization aids.
  • thickening agents described below may be included.
  • thickening agent B any suitable thickening agents can be used.
  • Thickening agents which can also be referred to as swelling agents, are generally organic, high molecular weight substances which absorb liquids, especially water, swelling, and eventually pass into viscous true or colloidal solutions.
  • the thickeners serve to increase the viscosity of the solidifiers according to the invention.
  • Any suitable thickening agent can be used according to the invention.
  • organic natural thickening agents such as agar-agar, carrageenan, tragacanth, gum arabic, alginates, pectins, polyoses, guar flour, locust bean gum, starch, dextrins, gelatin or casein can be used. It is also possible to use organic, modified natural substances such as carboxymethylcellulose and other cellulose ethers, hydroxyethyl and propylcellulose as well as core flour ethers.
  • organic, fully synthetic thickeners such as polyacrylic and polymethacrylic compounds, vinyl polymers, polycarboxylic acids, polyethers, polyimines or polyamines.
  • inorganic thickening agents such as polysilicic acids, clay minerals such as montmorillonites, zeolites or silicas are used.
  • a cellulose-based thickener is used.
  • the thickener is particularly preferably selected from carboxymethylcellulose, cellulose ethers, hydroxyethylcellulose, hydroxypropylcellulose and mixtures of two or more thereof.
  • methyl cellulose is used.
  • component C defoamers are also used. These are substances that form a closed film liquid-gaseous at the interface and thus allow the medium to be degassed to form the smallest surface and thus the lowest-energy state in a very short time by destroying the gas bubbles.
  • the defoamers which destroy the foam which has already formed have, in principle, the same composition as the antifoaming agent which prevents foaming. These may be surfactants that displace the foaming agents from the interface without producing foam themselves, or products that increase the surface tension of the water, such as natural fats and oils or fatty alcohols. In many cases defoamers are used silicone-based. Glycol ethers such as polyethylene / propylene glycol ethers or mixed ethers may also be used, for example.
  • an antifoam emulsion is used according to the invention, as is commercially available.
  • At least one salt or hydroxide of an alkali metal or alkaline earth metal is used according to the invention.
  • these are preferably sodium, magnesium and / or calcium compounds.
  • the hydroxides or chlorides are used. Particular preference is given to using a combination of sodium hydroxide and calcium chloride.
  • the proportion of the sodium hydroxide is preferably 0.01 to 0.15% by weight.
  • the proportion of calcium chloride is preferably 0.5 to 5 wt .-%. - - -
  • Sodium hydroxide and calcium hydroxide are used to adjust the pH and to stabilize the composition of the invention.
  • the solidifiers used erf ⁇ ndungshiel may also contain other conventional auxiliaries and additives.
  • the solidifiers used according to the invention can be prepared by simply mixing the starting materials.
  • the powders of the starting materials can be mixed. It is also possible to mix aqueous solutions, emulsions or dispersions of the starting materials with one another in order to obtain an application-ready, flowable liquid composition.
  • ground consolidators or foundation consolidators used according to the invention are used, if appropriate after mixing with water, for consolidating soil or soil, soil-containing materials such as mixtures of soil and road coverings or building materials, or foundation materials.
  • the solidifier is not used in concrete or cement. Concrete or cement additives in the consolidation of soil are generally not critical.
  • sampling of the soil is typically first carried out, so that soil mechanical laboratory investigations can be carried out.
  • preliminary geotechnical investigations can be carried out, and for traffic areas, the loads and frequency of traffic can be determined.
  • the climate can be determined, for example, the frequency of frost and the amount of rainfall.
  • the dosage of the cement can be determined, as well as the dosage of the inventive Festigers.
  • cement spreading and introduction of the solidifier according to the invention via a milling cutter can follow.
  • levelers, graders and caterpillar as well as roller can connect.
  • a sampling is carried out and the load capacity after setting is examined. This will ensure adequate quality assurance.
  • an asphalt application can take place in the usual way, it being possible to dispense with a layer of crushed aggregate.
  • silicate particles are preferably added during the production of high-strength concretes. These silicate particles are about 30 to 100 times smaller than the cement bodies (diameter in the micrometer range) and consist almost entirely of amorphous silicon dioxide. Due to their shape and size, the silicate particles are able to fill a portion of the pore space between the cement grains much better.
  • the caused due to the dispersing effect of the superplasticizer structural compaction of the cement paste is again significantly increased, and it is achieved a higher density.
  • a Putzolan secondary reaction occurs between the calcium hydroxide formed during cement hydration and the silicate particles.
  • This calcium silicate hydrate is formed, which has a higher strength compared to the starting materials.
  • the microstructure in the composite zone between cement and aggregate significantly improved by this approach. This improved association between aggregate and matrix by influencing the calcium and ettringite content contributes significantly to the increase in strength.
  • these auxiliaries based on cement, in an amount of 5 to 99 wt .-%, particularly preferably 10 to 50 wt .-%.
  • silicate particles which preferably have an average particle size in the range from 100 to 1000 nm.
  • the ratio of inventive solidifier to cement can be chosen freely within wide ranges.
  • Bonding with fresh and salt water better processability and compactability - high durability.
  • the solidifier used in the invention is environmentally friendly and can even be used for setting and thus stabilizing contaminated soils. Even under the most difficult conditions, under which a road rehabilitation or a road construction of conventional type are no longer possible, the processing of the inventive solidifier can be done, for example, in frost.
  • Construction costs by saving on expenses for soil replacement, transport, material supply, earthworks and soil disposal.
  • the construction time can be up to
  • a driving on the construction field is after a short time, typically two days, due to the fast setting process possible. Maintenance costs can be reduced while achieving much higher compressive strengths. Even with frost, the inventive method can be performed.
  • the invention also relates to the use of the soil or foundation consolidators as defined above, optionally after mixing with water, for consolidating soil or soil containing materials.
  • soil or foundation consolidators as defined above, optionally after mixing with water, for consolidating soil or soil containing materials.
  • These materials are preferably not cement, concrete or mortar, but soil or physical mixtures of soil with other materials, such as soil with stones, crushed stone or rock dust, or mixtures of soil with debris or road surfaces or substrates to which Road coverings are applied.
  • the soil or Bodenungsfestfestiger be used in road or road construction or in the road or road restoration.
  • the invention is further illustrated by the following example.
  • composition can be used directly for soil consolidation by milling in soil.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Road Paving Structures (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L’invention se rapporte à un procédé pour consolider des sols et des fondations, dans lequel on incorpore un agent de consolidation des sols ou des fondations contenant un polymère de type latex (A), un épaississant (B), un antimousse (C) et au moins un sel ou un hydroxyde (D) de métal alcalin ou de métal alcalino-terreux ainsi que de l’eau le cas échéant, éventuellement après mélange avec de l’eau et éventuellement avec du ciment et/ou des charges dans le sol ou dans les fondations, que l’on mélange au sol ou aux fondations.
PCT/EP2009/053582 2008-03-28 2009-03-26 Procédé pour consolider des sols ou des fondations WO2009118376A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP09724918A EP2279232A1 (fr) 2008-03-28 2009-03-26 Procédé pour consolider des sols ou des fondations
RU2010143892/04A RU2503768C2 (ru) 2008-03-28 2009-03-26 Способ закрепления грунта или фундамента
AP2010005376A AP2010005376A0 (en) 2008-03-28 2009-03-26 Method for base or foundation reinforcement.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008016325A DE102008016325A1 (de) 2008-03-28 2008-03-28 Boden- oder Fundamentverfestiger
DE102008016325.2 2008-03-28

Publications (1)

Publication Number Publication Date
WO2009118376A1 true WO2009118376A1 (fr) 2009-10-01

Family

ID=40792957

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/053582 WO2009118376A1 (fr) 2008-03-28 2009-03-26 Procédé pour consolider des sols ou des fondations

Country Status (5)

Country Link
EP (1) EP2279232A1 (fr)
AP (1) AP2010005376A0 (fr)
DE (1) DE102008016325A1 (fr)
RU (1) RU2503768C2 (fr)
WO (1) WO2009118376A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2313354A1 (fr) 2008-08-13 2011-04-27 Thöne, Oliver Dispersion destinée à être utilisée dans un mélange de béton
CN111908853A (zh) * 2019-05-07 2020-11-10 中电建生态环境集团有限公司 自密实土及其制备方法和回填市政空腔的施工方法
CN113514619A (zh) * 2021-08-16 2021-10-19 美亚高新材料股份有限公司 一种锚固剂固化剂变干原因研究及其预防办法

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WO2013074296A1 (fr) * 2011-11-17 2013-05-23 Dow Global Technologies Llc Mélanges cmc/hec pour laitiers de ciment
RU2509188C1 (ru) * 2012-10-31 2014-03-10 Павел Тимофеевич Полуэктов Способ укрепления естественных грунтов и минеральных материалов для строительства дорог
EA029681B1 (ru) * 2015-06-17 2018-04-30 Михаил Иванович Мордич Композиционный строительный отделочный материал
RU2643869C1 (ru) * 2016-11-21 2018-02-06 Владимир Борисович Комолов Состав для укрепления грунта, способ укрепления грунта и грунтовая смесь
DE102017104084A1 (de) * 2017-02-27 2018-08-30 Markus Walter Lehner Polymermodifizierte Bodenstabilisierung
RU2736013C1 (ru) * 2020-01-31 2020-11-11 Общество с ограниченной ответственностью "Научно-проектная компания "Основа Плюс" Способ укрепления грунта и состав для укрепления грунта
CN111364306A (zh) * 2020-03-26 2020-07-03 中国十七冶集团有限公司 一种减少湿陷性黄土高填方路基工后沉降的施工方法
RU2768348C1 (ru) * 2021-07-07 2022-03-23 федеральное государственное бюджетное образовательное учреждение высшего образования "Московский государственный технический университет имени Н.Э. Баумана (национальный исследовательский университет)" (МГТУ им. Н.Э. Баумана) Способ укрепления грунта

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DE1571449A1 (de) 1965-04-14 1970-12-10 Esso Res And Engineering Co Moertelmassen
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US4243563A (en) 1979-03-16 1981-01-06 Chevron Research Company Calcium polysulfide soil stabilization method and compositions
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2313354A1 (fr) 2008-08-13 2011-04-27 Thöne, Oliver Dispersion destinée à être utilisée dans un mélange de béton
CN111908853A (zh) * 2019-05-07 2020-11-10 中电建生态环境集团有限公司 自密实土及其制备方法和回填市政空腔的施工方法
CN113514619A (zh) * 2021-08-16 2021-10-19 美亚高新材料股份有限公司 一种锚固剂固化剂变干原因研究及其预防办法
CN113514619B (zh) * 2021-08-16 2024-02-02 美亚高新材料股份有限公司 一种锚固剂固化剂变干原因研究及其预防办法

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Publication number Publication date
AP2010005376A0 (en) 2010-08-31
RU2503768C2 (ru) 2014-01-10
DE102008016325A1 (de) 2009-10-01
EP2279232A1 (fr) 2011-02-02
RU2010143892A (ru) 2012-05-10

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