EP2468955B1 - Procédé de realisation d'une couche de support - Google Patents

Procédé de realisation d'une couche de support Download PDF

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Publication number
EP2468955B1
EP2468955B1 EP11184515.2A EP11184515A EP2468955B1 EP 2468955 B1 EP2468955 B1 EP 2468955B1 EP 11184515 A EP11184515 A EP 11184515A EP 2468955 B1 EP2468955 B1 EP 2468955B1
Authority
EP
European Patent Office
Prior art keywords
vol
sludge
mixture
water
waste
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.)
Expired - Lifetime
Application number
EP11184515.2A
Other languages
German (de)
English (en)
Other versions
EP2468955A2 (fr
EP2468955A3 (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
Original Assignee
Kuegler Jost-Ulrich
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Publication date
Application filed by Kuegler Jost-Ulrich filed Critical Kuegler Jost-Ulrich
Priority to EP11184515.2A priority Critical patent/EP2468955B1/fr
Publication of EP2468955A2 publication Critical patent/EP2468955A2/fr
Publication of EP2468955A3 publication Critical patent/EP2468955A3/fr
Application granted granted Critical
Publication of EP2468955B1 publication Critical patent/EP2468955B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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.
  • arid zones In these areas, but also in areas with little precipitation, which are not yet (completely) deserts, so-called arid zones, are predominantly equal-grained, fine-grained sands in loose storage, which do not have sufficient capacity for road construction or other foundations. Due to their uniformity, they are not compressible. The shear strength is therefore very low. The cause of the low shear strength is the round grain shape and the uniformity of the sand.
  • 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 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 there is a high sensitivity to weather, as the light materials are washed away in the rain. This also applies if waste incineration slag is added to the MBT residues.
  • the FR-1433508 A describes a method for producing a base course in which sand is mixed with slag, fly ash and lime.
  • the FR-2583998 A1 describes the use of dried residues of mechanical-biological waste treatment plants in road construction. The present invention is therefore based on the problem to provide a method in which open-porous starting materials of low shear strength can be used in structural layers for road construction or for other purposes even under extreme climatic conditions by physical grain supports in a particularly economical manner.
  • 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 process according to the invention provides the following basic prerequisites for solving the abovementioned problem:
  • the starting material is first mixed with broken refuse incineration slag having an average grain size of ⁇ 45 mm, preferably ⁇ 32 mm.
  • Waste incineration slag of this size is capable of filling the open pores of the feedstock, thereby providing grain support and hence higher shear strength.
  • the material mixture if necessary, mixed with a water carrier, so that the hydraulic setting can take place in the preferably already solidified support layer 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 water-containing sludge which may be used optionally has a cohesive soil with grain sizes of ⁇ 0.06 mm.
  • the sludge may be, for example, sewage sludge or sludge.
  • the water content of the slurry is preferably 40% by weight - 85% by weight, preferably 70% by weight - 80% by weight.
  • Substitute building materials are then admixed which achieve good compaction capability and high shear strengths by filling the microporous structure of the starting material.
  • the material mixture is brought into a state by having a sufficient load capacity, so that it can be applied and compacted even in damp weather as a support layer.
  • the materials named as substitute building materials have a free lime content of ⁇ 20%.
  • the grain size of the substitute building materials is ⁇ 0.06 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 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 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. 30 vol.% Be. 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.
  • 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. For this purpose, the CO 2 must 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.
  • the base course mixture preferably becomes one Sludge added, which corresponds approximately to the grain of a mixed soil of clay, silt and sand Lösslehms with particle sizes of 0.001 to 0.06 mm and up to 2 mm but compared to natural Schluffen has a very high water content.
  • This is ideal for sewage sludges and / or aquatic sludges, such as those found in harbor pits.
  • 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 under extreme Climatic conditions of hot sun radiation retains its function and does not burn.
  • 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".
  • Another example confirms the stabilizing effect of silt in the soil mixture.
  • 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 o and 45 mm, on which is usually established with equal soil pressures.
  • the base layers have sufficient stability on embankments and adequate strength for further use or for Overrunning of the materials for further proper layered landfill with conventional Erdbautechnikn, 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Agronomy & Crop Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Processing Of Solid Wastes (AREA)
  • Road Paving Structures (AREA)

Claims (4)

  1. Procédé de fabrication d'une couche de base, en particulier pour la construction routière ou en tant qu'aire de stationnement pour des bâtiments, comprenant les étapes, dans l'ordre suivant :
    a. mise à disposition d'une matière de départ ayant un volume des pores ouverts compris entre 25 % et 40 %, qui est constituée de matériaux résiduaires d'installation mécano-biologiques de traitement des déchets, pour les déchets de zones d'habitation et les déchets qui peuvent être éliminés comme les déchets des zones d'habitation ;
    b. mélange de la matière de départ avec des scories concassées d'incinération des ordures, ayant une granulométrie ≤ 45 mm, de préférence ≤ 32 mm, selon une proportion de 25 % en volume à 30 % en volume ;
    c. addition, par mélange, d'une boue contenant de l'eau, quand la matière de départ présente une teneur trop faible en eau, pour permettre une prise hydraulique dans le mélange, le mélange présentant, après l'étape de procédé c, la boue en une quantité de 15 % en volume à 25 % en volume ;
    d. addition de matériaux de construction secondaires à prise hydraulique et à support par les grains, qui dans le mélange présentent une proportion en volume comprise entre 20 % en volume et 33 % en volume, la granulométrie des matériaux de construction secondaires étant < 0,06 mm ; et les matériaux de construction secondaires présentant une proportion de chaux libre ≥ 20 % en poids, et présentant les substances suivantes :
    i) cendres volantes sèches de houille, et/ou
    ii) cendres de lit fluidisé et/ou
    iii) cendres de lignite provenant d'une centrale, ou
    iv) laitiers désagrégés de poche de coulée et/ou
    v) cendres de papier ;
    e. puis compactage du mélange, préparé jusqu'à homogénéité dans des mélangeurs à circulation forcée, de la matière de départ, des scories concassées d'incinération des ordures, de boue et de matériaux de construction secondaires, à l'aide de cylindres lourds ayant un poids d'environ 10 t.
  2. Procédé selon la revendication 1, dans lequel la boue contenant de l'eau comprend des boues des eaux d'égout et/ou de la vase de lac et de cours d'eau.
  3. Procédé selon l'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.
  4. Couche de base, en particulier pour la construction routière ou pour les bâtiments, fabriquée par un procédé selon l'une des revendications 1 à 3.
EP11184515.2A 2004-10-29 2004-10-29 Procédé de realisation d'une couche de support Expired - Lifetime EP2468955B1 (fr)

Priority Applications (1)

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

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP20040025845 Division EP1655410B1 (fr) 2004-10-29 2004-10-29 Procédé pour la réalisation d'une couche de base
EP04025845.1 Division 2004-10-29

Publications (3)

Publication Number Publication Date
EP2468955A2 EP2468955A2 (fr) 2012-06-27
EP2468955A3 EP2468955A3 (fr) 2012-07-18
EP2468955B1 true EP2468955B1 (fr) 2017-06-14

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Family Applications (2)

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EP11184515.2A Expired - Lifetime EP2468955B1 (fr) 2004-10-29 2004-10-29 Procédé de realisation d'une couche de support
EP20040025845 Expired - Lifetime EP1655410B1 (fr) 2004-10-29 2004-10-29 Procédé pour la réalisation d'une couche de base

Family Applications After (1)

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EP20040025845 Expired - Lifetime EP1655410B1 (fr) 2004-10-29 2004-10-29 Procédé pour la réalisation d'une couche de base

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EP (2) EP2468955B1 (fr)
ES (1) ES2401837T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2759620C1 (ru) * 2020-08-11 2021-11-16 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "Экорециклинг" Геокомпозиты на основе техногенных грунтов антропогенного генезиса и способ их получения

Families Citing this family (4)

* 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
US9988317B2 (en) 2016-08-16 2018-06-05 Go Team CCR LLC Structures constructed using coal combustion materials
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
RU2720832C2 (ru) * 2018-08-02 2020-05-13 федеральное государственное бюджетное образовательное учреждение высшего образования "Пермский национальный исследовательский политехнический университет" Механически связный дисперсный грунт

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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2759620C1 (ru) * 2020-08-11 2021-11-16 ОБЩЕСТВО С ОГРАНИЧЕННОЙ ОТВЕТСТВЕННОСТЬЮ "Экорециклинг" Геокомпозиты на основе техногенных грунтов антропогенного генезиса и способ их получения

Also Published As

Publication number Publication date
ES2401837T3 (es) 2013-04-24
EP1655410A1 (fr) 2006-05-10
EP2468955A2 (fr) 2012-06-27
EP1655410B1 (fr) 2012-12-19
EP2468955A3 (fr) 2012-07-18

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