FR2729657A1 - Hydraulic binder esp. for road construction and radioactive or toxic waste confinement - Google Patents

Hydraulic binder esp. for road construction and radioactive or toxic waste confinement Download PDF

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Publication number
FR2729657A1
FR2729657A1 FR9500939A FR9500939A FR2729657A1 FR 2729657 A1 FR2729657 A1 FR 2729657A1 FR 9500939 A FR9500939 A FR 9500939A FR 9500939 A FR9500939 A FR 9500939A FR 2729657 A1 FR2729657 A1 FR 2729657A1
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Prior art keywords
hydraulic binder
cement
road construction
hydraulic
radioactive
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FR9500939A
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French (fr)
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Priority to FR9500939A priority Critical patent/FR2729657A1/en
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Classifications

    • 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
    • C04B7/00—Hydraulic cements
    • C04B7/14—Cements containing slag
    • C04B7/147—Metallurgical slag
    • C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
    • C04B7/21—Mixtures thereof with other inorganic cementitious materials or other activators with calcium sulfate containing activators
    • 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
    • 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
    • C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
    • C04B2111/00784—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes for disposal only
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding

Abstract

A novel hydraulic binder consists of a dry mixt. of (by wt.) 78-85% foundry slag, 8-12% quicklime, 2-6% gypsum and 3-7% cement, pref. Portland cement. Also claimed is a construction material for building or public works, formed by combining the above hydraulic binder with aggregates.

Description

L'invention se rapporte à un liant hydraulique haute performance à base de laitier de fonderie.The invention relates to a high performance hydraulic binder based on foundry slag.

Ce liant hydraulique s'applique notamment à la construction routière, ainsi qu'au domaine de l'environnement, en particulier l'inertage des déchets.This hydraulic binder applies in particular to road construction, as well as to the environment, in particular the inerting of waste.

On connaît des liants hydrauliques à base de laitier de fonderie, contenant également du gypse et de la chaux. La chaux permet d'activer le pouvoir hydraulique du laitier, et le gypse a pour fonction de réguler la prise.Hydraulic binders are known based on foundry slag, also containing gypsum and lime. The lime activates the hydraulic power of the slag, and the gypsum has the function of regulating the setting.

Ces liants hydrauliques sont utilisés pour réaliser des revêtements de route. Cependant, ils présentent de nombreux inconvénients notamment, leur résistance est insuffisante surtout pendant la période de durcissement. Pour y remédier, on active la prise du liant, mais ce dernier devient alors difficile à travailler et présente des risques de fissures.These hydraulic binders are used to make road surfaces. However, they have many drawbacks in particular, their resistance is insufficient especially during the curing period. To remedy this, the setting of the binder is activated, but the latter then becomes difficult to work and presents risks of cracking.

Le document US-A-2 803 556 concerne un substitut du béton utilisé pour la fabrication de blocs de construction, dans lequel une majorité d'un matériau siliceux est mélangé à une minorité d'un matériau calcaire, par exemple de la chaux, du ciment, du laitier. Il est proposé d'ajouter du gypse pour réguler la prise.Document US-A-2 803 556 relates to a concrete substitute used for the manufacture of building blocks, in which a majority of a siliceous material is mixed with a minority of a calcareous material, for example lime, cement, slag. It is proposed to add gypsum to regulate the intake.

Le matériau décrit dans ce document utilise les propriétés hydrauliques de ses composants, mais dans le cadre d'une application très particulière, qui est la fabrication de blocs de construction. Sa mise en oeuvre necessite un moulage des blocs, ainsi qu'un séchage artificiel à la vapeur. Les ingrédients sont broyés ensemble, à l'exception du gypse qui doit être ajouté à part dans l'eau. Le laitier, s'il est présent dans la composition, ne l'est jamais en tant que composant maJoritaire.The material described in this document uses the hydraulic properties of its components, but in the context of a very specific application, which is the manufacture of building blocks. Its implementation requires a molding of the blocks, as well as an artificial steam drying. The ingredients are ground together, with the exception of gypsum which must be added separately in water. Slag, if present in the composition, is never present as a majority component.

Au contraire, le problème résolu par l'invention concerne un liant hydraulique à base de laitier de fonderie . ce liant doit pouvoir notamment être mis en oeuvre dans la construction routière et l'inertage des déchets. Dans ces domaines, les conditions de mise en oeuvre d'un liant hydraulique sont éloignées de la mise en oeuvre du matériau décrite par le document US-A-2 803 556.On the contrary, the problem solved by the invention relates to a hydraulic binder based on foundry slag. this binder must in particular be able to be used in road construction and inerting of waste. In these fields, the conditions for using a hydraulic binder are far removed from using the material described in document US-A-2 803 556.

Un des buts de l'invention est ainsi de fournir un liant hydraulique à base de laitier de fonderie offrant des performances améliorées par rapport aux liants hydrauliques utilisés dans l'art antérieur, notamment une facilité de travail lors de la mise en oeuvre et une augmentation de sa résistance plus rapide au cours de la prise, et ce pour un coût inférieur.One of the aims of the invention is thus to provide a hydraulic binder based on foundry slag offering improved performance compared to the hydraulic binders used in the prior art, in particular ease of work during implementation and an increase. faster resistance during setting, at a lower cost.

A cet effet, le liant hydraulique selon l'invention est constitué par un mélange à sec de laitier de fonderie, de chaux vive aérienne, de gypse et de ciment, les composants étant présents dans le mélange selon les proportions suivantes en masse . 78-85 % de laitier de fonderie . 8-12 % de chaux aérienne vive 2-6 % de gypse 3-7 de ciment.To this end, the hydraulic binder according to the invention consists of a dry mixture of foundry slag, aerial quicklime, gypsum and cement, the components being present in the mixture in the following proportions by mass. 78-85% foundry slag. 8-12% quicklime 2-6% gypsum 3-7 cement.

Les laitiers de fonderie sont des produits de l'industrie sidérurgique : production d'acier, d'aluminium, etc. Ils constituent la base du liant. En variante, le laitier pourra être remplacé par une autre pouzzolane artificielle ou naturelle présentant des caractéristiques hydrauliques comparables.Foundry slag is a product of the steel industry: production of steel, aluminum, etc. They form the basis of the binder. As a variant, the slag may be replaced by another artificial or natural pozzolan having comparable hydraulic characteristics.

La présence de gypse et de chaux dans les proportions indiquées assure une prise et une résistance suffisante à 28 jours. Le ciment permet d'obtenir une résistance sur le court terme, à 7 et 14 jours.The presence of gypsum and lime in the indicated proportions ensures sufficient setting and resistance at 28 days. Cement provides resistance in the short term, at 7 and 14 days.

Le ciment est de préférence un ciment Portland, par exemple CPA 55 R.The cement is preferably a Portland cement, for example CPA 55 R.

Le mélange ainsi déterminé répond aux normes techniques et aux exigences des circulaires administratives concernant l'utilisation des liants hydrauliques dans le bâtiment et les travaux publics.The mixture thus determined meets technical standards and the requirements of administrative circulars concerning the use of hydraulic binders in building and public works.

Les proportions indiquées peuvent varier dans une fourchette de 2 à 5 %, en fonction notamment de la qualité des produits initiaux.The proportions indicated can vary within a range of 2 to 5%, depending in particular on the quality of the initial products.

Des variations de cet ordre sont tolérées par l'administration.Variations of this order are tolerated by the administration.

Le liant hydraulique selon l'invention peut notamment être mis en oeuvre dans l'industrie routière, pour la construction de nouvelles routes ou autoroutes, en couche de fondation ou de base, ou encore pour le terrassement, traitement des sols, barrages, etc. The hydraulic binder according to the invention can in particular be used in the road industry, for the construction of new roads or motorways, as a foundation or base layer, or even for earthworks, soil treatment, dams, etc.

En effet, la construction routière utilise les propriétés hydrauliques de certains matériaux ciments ou liants pour la consolidation des couches de base, de formes ou de roulement.Indeed, road construction uses the hydraulic properties of certain cement or binder materials for the consolidation of base layers, shapes or surfaces.

La mise en oeuvre se fait par des moyens mécaniques directement sur chantier ou par une préparation en centrale de fabrication.The implementation is done by mechanical means directly on site or by preparation in a manufacturing center.

Ce produit vient alors en substitution du ciment ou du liant traditionnel.This product then comes to replace the cement or the traditional binder.

Il peut être mis en oeuvre directement par combinaison avec des agrégats ou le produit du concassage d'une chaussée à regénérer.It can be implemented directly by combination with aggregates or the product of the crushing of a pavement to be regenerated.

Outre la construction routière, le liant hydraulique selon l'invention est adapté pour d'autres usages faisant intervenir un liant hydraulique, notamment l'inertage de déchets ménagers ou autres en phase ultime, ou la mise en stock de produits toxiques.In addition to road construction, the hydraulic binder according to the invention is suitable for other uses involving a hydraulic binder, in particular the inerting of household or other waste in the final phase, or the storage of toxic products.

Le liant selon l'invention est alors combiné aux boues ou aux déchets broyés, puis le mélange est, après la prise, stocké dans une décharge.The binder according to the invention is then combined with the sludge or ground waste, then the mixture is, after setting, stored in a landfill.

Dans l'industrie sidérurgique, le liant hydraulique selon l'invention peut être utilisé pour le traitement des boues issues de la filtration de matières toxiques ou d'eaux usées.In the steel industry, the hydraulic binder according to the invention can be used for the treatment of sludge from the filtration of toxic materials or waste water.

De manière générale, le liant hydraulique selon l'invention peut être mis en oeuvre dans de nombreux domaines liés à l'environnement traitement et épuration des eaux, des boues, des gaz, traitement de déchets radio-actifs, inertage, etc.In general, the hydraulic binder according to the invention can be used in many fields related to the environment treatment and purification of water, sludge, gas, treatment of radioactive waste, inerting, etc.

On a constaté expérimentalement son efficacité dans la rétention de métaux lourds ou toxiques, notamment l'arsenic. It has been experimentally found to be effective in retaining heavy or toxic metals, in particular arsenic.

Claims (5)

REVENDICATIONS 1. Liant hydraulique à base de laitier de fonderie, caractérisé par le fait qu'il est formé du mélange à sec de laitier de fonderie, de chaux aérienne vive, de gypse et de ciment, ces composants étant présents dans le mélange selon les proportions suivantes en masse .1. Hydraulic binder based on foundry slag, characterized in that it is formed from the dry mixture of foundry slag, quicklime, gypsum and cement, these components being present in the mixture according to the proportions following in mass. . 78 à 85 de laitier de fonderie .8 8 à 12 de chaux aérienne vive, 2 à 6 de gypse 3 à 7 % de ciment.. 78 to 85 foundry slag. 8 8 to 12 quicklime, 2 to 6 gypsum 3 to 7% cement. 2. Liant hydraulique selon la revendication 1, caractérisé par le fait que le ciment est un ciment Portland.2. Hydraulic binder according to claim 1, characterized in that the cement is a Portland cement. 3 Matériau de construction pour le bâtiment ou les travaux publics, caractérisé par le fait qu'il est formé par la combinaison d'un liant hydraulique selon l'une quelconque des revendications 1 ou 2 avec des aggrégats.3 Construction material for building or public works, characterized in that it is formed by the combination of a hydraulic binder according to any one of claims 1 or 2 with aggregates. 4. Application d'un liant hydraulique selon l'une quelconque des revendications 1 ou 2 à la fabrication de couche de revêtement par combinaison avec des aggrégats.4. Application of a hydraulic binder according to any one of claims 1 or 2 to the manufacture of coating layer by combination with aggregates. 5. Application d'un liant hydraulique selon l'une des revendications 1 ou 2 à l'inertage de déchets par combinaison avec ces déchets broyés, liquides ou semi-liquides. 5. Application of a hydraulic binder according to one of claims 1 or 2 to inerting waste by combination with this ground waste, liquid or semi-liquid.
FR9500939A 1995-01-25 1995-01-25 Hydraulic binder esp. for road construction and radioactive or toxic waste confinement Withdrawn FR2729657A1 (en)

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FR9500939A FR2729657A1 (en) 1995-01-25 1995-01-25 Hydraulic binder esp. for road construction and radioactive or toxic waste confinement

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FR9500939A FR2729657A1 (en) 1995-01-25 1995-01-25 Hydraulic binder esp. for road construction and radioactive or toxic waste confinement

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FR2729657A1 true FR2729657A1 (en) 1996-07-26

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7008478B2 (en) * 2004-03-31 2006-03-07 Mirae Environment And Construction Co., Ltd. Composite of consolidation-hardening pile for soft ground
CN104725011A (en) * 2015-02-04 2015-06-24 贵州开磷集团股份有限公司 Ardealite-based imitation pinewood structure building material and preparation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE380588A (en) *
BE507819A (en) *
DE807189C (en) * 1948-10-02 1951-06-25 Rheinische Kalksteinwerke Slag cement
FR2390392A1 (en) * 1977-05-13 1978-12-08 Rhone Poulenc Ind NEW MILK CATCH ACTIVANT
EP0188618A1 (en) * 1984-06-27 1986-07-30 EUN, Hee Kwon High-strength hydraulic cement composition
DE3701717C1 (en) * 1987-01-22 1988-04-07 Readymix Zementwerke Binder and building material mixture produced therefrom

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE380588A (en) *
BE507819A (en) *
DE807189C (en) * 1948-10-02 1951-06-25 Rheinische Kalksteinwerke Slag cement
FR2390392A1 (en) * 1977-05-13 1978-12-08 Rhone Poulenc Ind NEW MILK CATCH ACTIVANT
EP0188618A1 (en) * 1984-06-27 1986-07-30 EUN, Hee Kwon High-strength hydraulic cement composition
DE3701717C1 (en) * 1987-01-22 1988-04-07 Readymix Zementwerke Binder and building material mixture produced therefrom

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CEM.-WAPNO-GIPS, no. 12, POLAND, pages 324 - 328 *
CHEMICAL ABSTRACTS, vol. 90, no. 18, 30 April 1979, Columbus, Ohio, US; abstract no. 141435r, E. OSIECKA page 226; *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7008478B2 (en) * 2004-03-31 2006-03-07 Mirae Environment And Construction Co., Ltd. Composite of consolidation-hardening pile for soft ground
CN104725011A (en) * 2015-02-04 2015-06-24 贵州开磷集团股份有限公司 Ardealite-based imitation pinewood structure building material and preparation method thereof

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