EP1655410B1 - Procédé pour la réalisation d'une couche de base - Google Patents

Procédé pour la réalisation d'une couche de base Download PDF

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Publication number
EP1655410B1
EP1655410B1 EP20040025845 EP04025845A EP1655410B1 EP 1655410 B1 EP1655410 B1 EP 1655410B1 EP 20040025845 EP20040025845 EP 20040025845 EP 04025845 A EP04025845 A EP 04025845A EP 1655410 B1 EP1655410 B1 EP 1655410B1
Authority
EP
European Patent Office
Prior art keywords
vol
materials
weight
base layer
sand
Prior art date
Legal status (The legal status 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 status listed.)
Not-in-force
Application number
EP20040025845
Other languages
German (de)
English (en)
Other versions
EP1655410A1 (fr
Inventor
Jost Ulrich Dipl.-Ing. Kügler
Peter Prof. Dr. Belouschek
Katja Dipl.-Ing. Kügler
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuegler Jost-Ulrich Dipl-Ing
Original Assignee
Kuegler Jost-Ulrich Dipl-Ing
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 Kuegler Jost-Ulrich Dipl-Ing filed Critical Kuegler Jost-Ulrich Dipl-Ing
Priority to ES04025845T priority Critical patent/ES2401837T3/es
Priority to EP11184515.2A priority patent/EP2468955B1/fr
Priority to EP20040025845 priority patent/EP1655410B1/fr
Publication of EP1655410A1 publication Critical patent/EP1655410A1/fr
Application granted granted Critical
Publication of EP1655410B1 publication Critical patent/EP1655410B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E01C3/003—Foundations for pavings characterised by material or composition used, e.g. waste or recycled material
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil

Definitions

  • the present invention relates to a method for producing a base course, in particular for road construction or as a stand space for buildings.
  • milled base course in the hot climatic zone Another problem with making the milled base course in the hot climatic zone is keeping it moist until the final setting takes several days.
  • the milled layers must be prepared with sufficient water content and kept moist until the final hydraulic binding with high water levels, so that these layers do not burn in the hot sun and bind only partially hydraulically, resulting in considerable loss of strength.
  • MBA residues are mainly fibrous wood and plastic residues with peat-like residual waste of coarse fiber structure with different grain size and length in the dry state. These residues accumulate in large quantities in mechanical-biological treatment plants and are not landfillable. If these materials are deposited in a landfill and blended, no strength is achieved and it is given a high sensitivity to weathering, since the light materials are washed away in the rain. This also applies if waste incineration slag is added to the MBT residues.
  • the discharges may be granular soil layers with too low a compactness such as e.g. Home burners or boiler ashes act. These soils are not sufficiently stable despite compaction because the grain breaks under load. Foundations of foundry sands, slag sand, blasting sand, etc. comparable to a uniform desert sand, due to their uniformity, do not have sufficient bearing capacity for foundations. Mixed-grained deposits, in which, however, also Feinstkom, silt occurs and are additionally wetted, can not be densified because of their high water content, as they soften during mechanical processing and even in the compressed state, assuming an optimum for the compaction water content is not sufficient capacity for Give birth to buildings.
  • BE-822838 A1 is a method for producing a support layer in which sewage sludge is mixed with extinguishing calf and fly ash.
  • the FR-1433508 A describes a method for producing a base course in which sand is mixed with slag, fly ash and lime.
  • this document does not describe the mixing of the Sand with chippings of small grain size, nor the mixing of 20 to 30 vol.% Watery mud or silt.
  • the present invention is therefore based on the problem to provide a method in which open-pore low shear strength starting materials can be used in support layers for road construction or for other purposes, even under extreme climatic conditions by physical Komstützungen.
  • the present invention solves this problem by a method for producing a supporting layer, in particular for road construction or as a stand space for buildings, with the steps specified in claim 1.
  • the method according to the invention provides the following basic prerequisites for solving the abovementioned problem: Replacing the open-pore sand, the MBT residues or the aforementioned fillings with substitute building materials which achieve good compaction capability and high shear strengths by filling the microporous structure of the starting material.
  • the material mixture is brought directly into a state by already having a minimum level of load capacity, so that they can be applied and compacted even in damp weather as a support layer.
  • the material mixture With the water-containing silt of the material mixture, if necessary, mixed with a water carrier so that the hydraulic setting in the preferably already solidified support layer can be done over several days without costly moisture retention.
  • the material mixture can additionally be treated with seawater without causing damage to the load bearing capacity due to resulting salt structures.
  • the starting material is first mixed with chippings of a grain size of on average ⁇ 6 mm, the chippings being admixed with 20-30% by volume of the starting material. Chippings of this size are capable of filling the open pores of the stock, thereby providing grain support and hence higher shear strength.
  • the materials named as substitute building materials have a free lime content of ⁇ 20%.
  • the grain size of the substitute building materials is preferably ⁇ 2 mm, more preferably ⁇ 1 mm. Substitute building materials with these properties contribute to grain support and, on the other hand, enable hydraulic bonding in the base course to further solidify it.
  • the water-containing silt optionally to be used preferably has a cohesive soil with grain sizes of ⁇ 0.06 mm.
  • the silt may be, for example, sewage sludge or sludge.
  • the water content of the slurry is preferably 75% by weight - 85% by weight, preferably 70% by weight - 80% by weight.
  • the present invention relates to a support layer, in particular for road construction or as a support layer for buildings, which has been produced by one of the methods explained above.
  • the desert sand is mixed with broken and therefore preferably sharp-edged recycling materials such as building rubble or rock debris so that the pore volume of the sand is filled with sharp-edged chippings edge substantially.
  • grit size 0 - 6 mm must be selected. A larger grain is not necessary, because it is important to substantially fill the open pores of the sand with chippings to obtain high shear strengths and thus to obtain a grain support.
  • the open pore volume of the sand is preferably 30 vol.% To max. 35 vol.%. It has been found that the highest shear values are achieved if there is no overmixing when adding the split sand, i. H. no maximum filling of the pores takes place. The amounts added should therefore be 15% by volume, preferably 20% by volume, max. Vol. 30%. This takes into account that even more materials must be mixed into the sand pores.
  • shear values of ⁇ 30 ° are determined, is achieved by a grain support with chippings a shear value of 38 ° to 42 °, depending on the rock strength of recycled materials. These shear values correspond to the shear strength of mineral mixtures, as used in Europe for road construction as minimum values.
  • load carrying capacities such as those required for road construction materials for heavy goods traffic (E v2 ⁇ 150 MN / m 2 ) achieve.
  • load carrying capacities such as those required for road construction materials for heavy goods traffic (E v2 ⁇ 150 MN / m 2 ) achieve.
  • mixtures are already achieved carrying capacity values of E v2 ⁇ 80 MN / m 2 .
  • the support layer produced in this way should be installed in layers in thicknesses of preferably 30-40 cm and compacted with heavy vibratory shell smoothing rollers weighing 10 - 15 t , preferably to 100% of the Proctor density.
  • the hydraulic binding finally, takes place over several days. If the mixture is kept moist for hydraulic setting, optimal values are achieved after one week. The longer period of time is explained by the CO 2 absorption from the air required for the hydraulic setting, when the lime, which has been cleared by the water, changes to hardened lime. This requires CO 2 first penetrate into the layer so that the required chemical reaction can take place. Due to the comparatively high strength, even before the hydraulic binding, the base course can already be exposed to medium loads during this time, whereby a rational implementation of further processing measures with machine assistance is to a certain extent possible.
  • a slurry is preferably added to the base course mixture which corresponds approximately to the grain size of a mixed soil of clay, silt and sand of a loess clay with grain sizes of 0.001 to 0.06 mm and up to 2 mm natural Schluffen has a very high water content.
  • sewage sludge may be added as a hydrous soil to the hydraulic sealant mixture on the order of the open pore mixture of the base layer, that is about 20-30%, preferably 25%, without the base layer losing its load bearing capacity.
  • the hydraulic setting retains its function under extreme climatic conditions of the hot sun and does not burn. Only on the surface of the Erdplanum the support layer is preferably to keep moist with enough water, which is why conveniently this base layers with a wear or cover layer, such as a road surface, overbuilt. Large volumes of water to moisturize the base course in the interior are not needed because the properties of the sludge are used as "dry water".
  • the soil materials were not compressible due to their high water content. In the compacted state after re-drying in the sun, these soil materials achieved only low load-bearing capacity values of 10 to 20 MN / m 2 .
  • soil pressures correspond to load capacities of compacted gritty sand and gravel sand layers or building rubble materials with a grain size of on average between 0 and 45 mm, on which is usually established with equal soil pressures.
  • the pore structure of this mixture is further filled and by adding said substitute building materials in an amount of 20 vol.% - 33 vol.%
  • the Buildability, compaction capability, the necessary load-bearing capacity and erosion-like deflation resistance of mixtures with MBA materials achieved.
  • the carrying capacity values are 20 - 30 MN / m 2 after 14 days of service life; on the other hand, only values of 5-10 MN / m 2 were achieved with the garbage slag alone, which corresponds to a soft clay. When it rained, no more abrasion was produced on the surface conditioned with the abovementioned substitute building materials and sludge.
  • the base courses have sufficient stability on embankments and sufficient strength, be it for further use or for driving over the materials for further proper layering with conventional earth-moving equipment, even in wet weather conditions. Due to the water-repellent properties of the MBT residues, the leachate recharge in the base area of the landfill is significantly reduced. Only by such a procedure, the above-mentioned governmental requirements for landfill deposition can be met.

Claims (8)

  1. Procédé pour réaliser une couche portante, en particulier pour la construction de routes ou comme surface de base pour des bâtiments, présentant les étapes suivantes dans l'ordre suivant :
    a. mise à disposition d'un matériau de départ ayant un volume de pores ouverts compris entre 25 % et 40 %, lequel matériau de départ comporte :
    i) du sable et/ou
    ii) des résidus d'installations de traitement mécano-biologique de déchets pour des déchets urbains et des déchets pouvant être traités comme des déchets urbains, et/ou
    iii) du remblai d'un ancien site industriel ;
    b. mélange du matériau de départ avec du sable gravillonnaire d'une granulométrie en moyenne ≤ 6 mm ;
    c. mélange avec des matériaux de construction de substitution qui présentent une fraction volumique comprise entre 15 % et 25 % dans le mélange, lesquels matériaux de construction de substitution comportent les matières suivantes :
    i) cendres volantes de houille et/ou
    ii) cendres de lit fluidisé et/ou
    iii) cendres de lignite provenant d'une centrale électrique ou
    iv) laitier de poche désagrégé et/ou
    v) cendres de papier,
    ces matériaux de construction de substitution présentant une proportion de chaux libre ≥ 20 % ; et
    d. ajout d'une boue ou d'un limon contenant de l'eau si le matériau de départ présente une teneur en eau trop faible, afin de permettre une liaison hydraulique dans le mélange, la couche portante présentant, après l'étape de procédé d., de la boue ou du limon à raison de 20 à 30 % en volume et un ou plusieurs des matériaux de construction de substitution mentionnés à raison de 15 à 25 % en volume ;
    e. compactage subséquent du mélange composé de matériau de départ, sable gravillonnaire, matériaux de construction de substitution et boue ou limon.
  2. Procédé selon la revendication 1, dans lequel le sable gravillonnaire est ajouté à raison de 20 à 30 % en volume.
  3. Procédé selon une des revendications 1 à 2, dans lequel la granulométrie des matériaux de construction de substitution est ≤ 2 mm, de préférence ≤ 1 mm.
  4. Procédé selon une des revendications précédentes, dans lequel la couche portante est posée par couches, une couche ayant de préférence une épaisseur de 30 à 40 cm.
  5. Procédé selon la revendication 4, dans lequel la couche portante est compactée après la pose avec un rouleau lisse vibrant d'un poids compris entre 10 t et 15 t jusqu'à 100 % de la densité Proctor.
  6. Procédé selon une des revendications précédentes, dans lequel la boue ou le limon contenant de l'eau comporte de la boue d'épuration et/ou de la boue de cours d'eau.
  7. Procédé selon une des revendications précédentes, dans lequel la boue contenant de l'eau présente une teneur en eau de 40 à 85 % en poids, de préférence de 70 à 80 % en poids.
  8. Couche portante, en particulier pour la construction de routes ou pour des bâtiments, réalisée avec un procédé selon une des revendications 1 à 7.
EP20040025845 2004-10-29 2004-10-29 Procédé pour la réalisation d'une couche de base Not-in-force EP1655410B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ES04025845T ES2401837T3 (es) 2004-10-29 2004-10-29 Procedimiento para la fabricación de una capa de soporte
EP11184515.2A EP2468955B1 (fr) 2004-10-29 2004-10-29 Procédé de realisation d'une couche de support
EP20040025845 EP1655410B1 (fr) 2004-10-29 2004-10-29 Procédé pour la réalisation d'une couche de base

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20040025845 EP1655410B1 (fr) 2004-10-29 2004-10-29 Procédé pour la réalisation d'une couche de base

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP11184515.2A Division EP2468955B1 (fr) 2004-10-29 2004-10-29 Procédé de realisation d'une couche de support
EP11184515.2 Division-Into 2011-10-10

Publications (2)

Publication Number Publication Date
EP1655410A1 EP1655410A1 (fr) 2006-05-10
EP1655410B1 true EP1655410B1 (fr) 2012-12-19

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EP11184515.2A Active EP2468955B1 (fr) 2004-10-29 2004-10-29 Procédé de realisation d'une couche de support
EP20040025845 Not-in-force EP1655410B1 (fr) 2004-10-29 2004-10-29 Procédé pour la réalisation d'une couche de base

Family Applications Before (1)

Application Number Title Priority Date Filing Date
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EP (2) EP2468955B1 (fr)
ES (1) ES2401837T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9988317B2 (en) 2016-08-16 2018-06-05 Go Team CCR LLC Structures constructed using coal combustion materials
RU2720832C2 (ru) * 2018-08-02 2020-05-13 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Механически связный дисперсный грунт

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2468955B1 (fr) * 2004-10-29 2017-06-14 Kügler, Jost-Ulrich Procédé de realisation d'une couche de support
US9790703B1 (en) 2016-08-16 2017-10-17 Go Team CCR LLC Methods of utilizing coal combustion residuals and structures constructed using such coal combustion residuals
RU2759620C1 (ru) * 2020-08-11 2021-11-16 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "Экорециклинг" Геокомпозиты на основе техногенных грунтов антропогенного генезиса и способ их получения

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3076717A (en) * 1959-07-31 1963-02-05 Corson G & W H Compositions for building load supporting surfaces
FR1433508A (fr) * 1965-02-17 1966-04-01 Matériau pour corps de chaussée
BE822838A (fr) * 1973-11-30 1975-04-01 Procede de mise en condition et d'utilisation de boue d'eau d'egouts
FR2583998A1 (fr) * 1985-01-04 1987-01-02 Marguet Paul Procede permettant l'utilisation globale des ordures menageres, ou autres dechets et detritus, a des fins industrielles
EP2468955B1 (fr) * 2004-10-29 2017-06-14 Kügler, Jost-Ulrich Procédé de realisation d'une couche de support

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9988317B2 (en) 2016-08-16 2018-06-05 Go Team CCR LLC Structures constructed using coal combustion materials
RU2720832C2 (ru) * 2018-08-02 2020-05-13 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Механически связный дисперсный грунт

Also Published As

Publication number Publication date
EP2468955A2 (fr) 2012-06-27
EP2468955B1 (fr) 2017-06-14
EP2468955A3 (fr) 2012-07-18
ES2401837T3 (es) 2013-04-24
EP1655410A1 (fr) 2006-05-10

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