FR2573420A1 - Development of a mixture based on sulphur with a view to obtaining a material of construction. - Google Patents

Development of a mixture based on sulphur with a view to obtaining a material of construction. Download PDF

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Publication number
FR2573420A1
FR2573420A1 FR8414169A FR8414169A FR2573420A1 FR 2573420 A1 FR2573420 A1 FR 2573420A1 FR 8414169 A FR8414169 A FR 8414169A FR 8414169 A FR8414169 A FR 8414169A FR 2573420 A1 FR2573420 A1 FR 2573420A1
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France
Prior art keywords
mixture
sulfur
development
sulphur
adjuvant
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.)
Withdrawn
Application number
FR8414169A
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French (fr)
Inventor
Mufid Al Samarai
Adel Al Hadithi
Michel Laquerbe
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NAT CENTER CONST LAB
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NAT CENTER CONST LAB
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Filing date
Publication date
Application filed by NAT CENTER CONST LAB filed Critical NAT CENTER CONST LAB
Priority to FR8414169A priority Critical patent/FR2573420A1/en
Publication of FR2573420A1 publication Critical patent/FR2573420A1/en
Withdrawn legal-status Critical Current

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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
    • C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/36—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing sulfur, sulfides or selenium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Development of a granulate-sulphur-adjuvant mixture making it possible to obtain a material of construction which is resistant in particular to the action of water. The adjuvant according to the invention is a silicone (dimethylpolysiloxane) oil introduced into the blender and mixed first of all with the hot granulates before the sulphur is introduced. The adjuvant is introduced in proportions varying between 0.25 and 2 % of the weight of the sand and of the fine components. Talc can also be added in proportions which can be up to 20 % of the weight of the sand to improve the mechanical strength and the plasticity of the mixture.

Description

MISE AU POINT D'UN MELAN A BASE DE SOUFRE EN VUE D'OBTENIR
UN MATERIAU DE CONSTRUCTION
DESCRIPTION
La présente invention concerne la mise au point d'un. mélange granulat-soufre-adjuvant permettant d'obtenir un matériau de construction résistant entre autre à l'action de l'eau
Les bétons et mortiers de soufre sont obtenus par mélange à chaud de granulats et de soufre en proportions variables. Le mélange est porté à la température de fusion du soufre (environ 1200 C). On obtient alors un mélange qui s'écoule facilement et qui peut être versé dans des moules, banches etc
Ce matériau ne fait intervenir ni liants hydrauliques, ni liants aériens, ni eau.DEVELOPMENT OF A SULFUR MELAN WITH A VIEW TO OBTAINING
A CONSTRUCTION MATERIAL
DESCRIPTION
The present invention relates to the development of a. aggregate-sulfur-admixture mixture to obtain a building material resistant among other things to the action of water
Sulfur concretes and mortars are obtained by hot mixing of aggregates and sulfur in variable proportions. The mixture is brought to the melting point of sulfur (approximately 1200 ° C.). This gives a mixture which flows easily and which can be poured into molds, forms, etc.
This material does not use hydraulic binders, aerial binders or water.

Le soufre tient lieu de liant.Sulfur acts as a binder.

Le mélange granulat-soufre, s'il répond aux normes de résistances mécaniques, de retrait gonflement etc... présente un inconvénient majeur lorsque ce matériau est immergé dans liteau, les résistances mécaniques chutent rapidement et les résistances après immersion sont de l'ordre de 10 à 25 m des résistances finales. The aggregate-sulfur mixture, if it meets the standards of mechanical resistance, swelling shrinkage, etc., has a major drawback when this material is immersed in a strip, the mechanical resistance drops quickly and the resistance after immersion is around from 10 to 25 m from the final resistances.

Ce mauvais comportement à l'eau peut s'expliquer de deux façons diffé rentes
- Une cause chimique : recristallisation du soufre sous une forme allotropique instable
- Une cause physique : présence d'éléments gonflants tels que des particules d'argile ou microfissuration du soufre lors de sa recristallisation.This bad behavior in water can be explained in two different ways
- A chemical cause: recrystallization of sulfur in an unstable allotropic form
- A physical cause: presence of swelling elements such as clay particles or microcracking of sulfur during its recrystallization.

En effet la recristallisation du soufre s'effectue avec une diminution de volume.Indeed, the recrystallization of sulfur is carried out with a reduction in volume.

Depuis longtemps des chercheurs ont essayé de résoudre ce problème en ajoutant aux mélanges granulats-soufre des adjuvantes parmi lesquels nous pouvons citer : DITHIOL, DICYCLOPENTADIENE, carbtlres éthyléniques, STYRENE etc... For a long time researchers have tried to solve this problem by adding to the aggregates-sulfur mixtures adjuvants among which we can cite: DITHIOL, DICYCLOPENTADIENE, ethylene carbilters, STYRENE etc ...

En dehors du fait qu'il n'est pas clairement démontré que ces produits ont une action durable dans le temps, l'inconvénient majeur de leur utilisation réside dans le fait qu'il faut mélanger ces produits dans le soufre ce qui nécessite des opérations industrielles importantes donc un coût du soufre ainsi plastifié plus élevé et la nécessité de s'approvisionner chez des industriels en nombre limité. Apart from the fact that it is not clearly demonstrated that these products have a lasting action over time, the major drawback of their use lies in the fact that these products have to be mixed in sulfur which requires operations. important industrial therefore a higher cost of sulfur plasticized and the need to source from manufacturers in limited numbers.

La présente invention consiste essentiellement à la mise au point d'un mélange granulat-soufre adjuvant qui ne nécessite aucune préparation et se réalise sur le chantier lors de la préparation du mélange. The present invention essentially consists in the development of a granulate-sulfur admixture mixture which does not require any preparation and is carried out on the site during the preparation of the mixture.

L'adjuvant retenu est un dimethyl polisiloxane plus précisément une nuile de silicone.  The adjuvant selected is a dimethyl polisiloxane, more precisely a cloud of silicone.

L'adjuvant est ajouté dans des proportions variant entre 0,25 et 2 du poids du sable et des éléments fins
L'ordure d'introduction des différents éléments du mélange est important lors du malaxage il est conseillé d'introduire successivement
- les granulats chauds
- l'huile de silicone qui est alors mélangé aux granulats
- enfin le soufre.The additive is added in proportions varying between 0.25 and 2 of the weight of the sand and fine elements
The introduction of the different elements of the mixture is important during mixing it is advisable to introduce successively
- hot aggregates
- silicone oil which is then mixed with the aggregates
- finally sulfur.

Les chutes de résistances mécaniques à partir d'un tel mélange et après immersion dans l'eau durant 90 jours sont de l'ordre de 20 v du poids du sable. The mechanical resistance drops from such a mixture and after immersion in water for 90 days are of the order of 20 v of the weight of the sand.

Enfin dans la présente invention il est également recommandé d'introduire en proportions pouvant atteindre 20 OD des poudres et plus particulièrement des silicates de magnésium (talc) qui ont pour effet d'améliorer les résistances initiales, particulièrement la résistance en traction, la tenue des mélanges à l'eau, la plasticité du mélange et permettre ainsi de réduire la teneur en soufre dans le mélange.  Finally, in the present invention, it is also recommended to introduce, in proportions up to 20 OD, powders and more particularly magnesium silicates (talc) which have the effect of improving the initial strengths, particularly the tensile strength, the resistance of the mixtures with water, the plasticity of the mixture and thus make it possible to reduce the sulfur content in the mixture.

Claims (4)

REVENDICATIONS 1. Mise au point d'un mélange nranulat-soufre-aduvant permettant d'obtenir un matériau résistant à l'action de l'eau 1. Development of a nranulate-sulfur-adjuvant mixture to obtain a material resistant to the action of water 2. Mélange selon la revendication 1 caractérisé par le fait que l'adjuvant est une huile de silicone 2. Mixture according to claim 1 characterized in that the adjuvant is a silicone oil 3 Mélange selon les revendications 1 et 2 caractérisé par le fait que le dosage en adjuvant est compris entre 0,25 , et 2 ,DN du poids du sable et des particules fines 3 mixture according to claims 1 and 2 characterized in that the dosage of adjuvant is between 0.25, and 2, DN of the weight of the sand and fine particles 4. Mélange selon les revendications 1, 2 et 3 caractérisé par l'adjonction de poudre minérale (Talc) dans des proportions allant jusqu'à 20% du poids du sable.  4. Mixture according to claims 1, 2 and 3 characterized by the addition of mineral powder (Talc) in proportions up to 20% of the weight of the sand.
FR8414169A 1984-09-13 1984-09-13 Development of a mixture based on sulphur with a view to obtaining a material of construction. Withdrawn FR2573420A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8414169A FR2573420A1 (en) 1984-09-13 1984-09-13 Development of a mixture based on sulphur with a view to obtaining a material of construction.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8414169A FR2573420A1 (en) 1984-09-13 1984-09-13 Development of a mixture based on sulphur with a view to obtaining a material of construction.

Publications (1)

Publication Number Publication Date
FR2573420A1 true FR2573420A1 (en) 1986-05-23

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FR8414169A Withdrawn FR2573420A1 (en) 1984-09-13 1984-09-13 Development of a mixture based on sulphur with a view to obtaining a material of construction.

Country Status (1)

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FR (1) FR2573420A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346626A2 (en) * 1988-05-13 1989-12-20 Péter Jòzsef Composition and apparatus for the production of prefabricated elements and similar products
FR2684984A1 (en) * 1991-12-12 1993-06-18 Dumez Sa Lyonnaise Eaux Sulphur mortar composition and process for its manufacture and its use
FR2684985A1 (en) * 1991-12-12 1993-06-18 Dumez Sa Lyonnaise Eaux Porous moulded objects, especially porous paving stones comprising a sulphur binder composition
WO2009150193A1 (en) * 2008-06-11 2009-12-17 Shell Internationale Research Maatschappij B.V. Sulphur cement pre-composition and process for preparing such sulphur cement pre-composition
WO2011000837A1 (en) 2009-07-01 2011-01-06 Shell Internationale Research Maatschappij B.V. Sulphur cement pre-composition and sulphur cement product
US8323395B2 (en) 2007-06-13 2012-12-04 Shell Oil Company Sulphur cement pre-composition and process for preparing such sulphur cement pre-composition

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1009339A (en) * 1948-06-08 1952-05-28 Process for manufacturing artificial plastics containing sulfur, and articles made from these materials
GB1436694A (en) * 1972-07-15 1976-05-19 Dow Corning Ltd Organosilicon compositions
GB2015568A (en) * 1978-03-02 1979-09-12 Chevron Res Plasticized sulfur composition
GB2043047A (en) * 1979-02-15 1980-10-01 Siporex Int Ab Imparting hydrophobic properties to steam-cured lightweight aerated concrete
FR2468561A1 (en) * 1979-09-12 1981-05-08 Siporex Int Ab Lightweight porous steam hardened concrete - contg. silicone oil as water repellent
US4376830A (en) * 1981-08-10 1983-03-15 Chevron Research Company Sulfur cement-aggregate-organosilane compositions and methods for preparing

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1009339A (en) * 1948-06-08 1952-05-28 Process for manufacturing artificial plastics containing sulfur, and articles made from these materials
GB1436694A (en) * 1972-07-15 1976-05-19 Dow Corning Ltd Organosilicon compositions
GB2015568A (en) * 1978-03-02 1979-09-12 Chevron Res Plasticized sulfur composition
GB2043047A (en) * 1979-02-15 1980-10-01 Siporex Int Ab Imparting hydrophobic properties to steam-cured lightweight aerated concrete
FR2468561A1 (en) * 1979-09-12 1981-05-08 Siporex Int Ab Lightweight porous steam hardened concrete - contg. silicone oil as water repellent
US4376830A (en) * 1981-08-10 1983-03-15 Chevron Research Company Sulfur cement-aggregate-organosilane compositions and methods for preparing

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0346626A2 (en) * 1988-05-13 1989-12-20 Péter Jòzsef Composition and apparatus for the production of prefabricated elements and similar products
EP0346626A3 (en) * 1988-05-13 1991-08-07 Péter Jòzsef Composition and apparatus for the production of prefabricated elements and similar products
FR2684984A1 (en) * 1991-12-12 1993-06-18 Dumez Sa Lyonnaise Eaux Sulphur mortar composition and process for its manufacture and its use
FR2684985A1 (en) * 1991-12-12 1993-06-18 Dumez Sa Lyonnaise Eaux Porous moulded objects, especially porous paving stones comprising a sulphur binder composition
US8323395B2 (en) 2007-06-13 2012-12-04 Shell Oil Company Sulphur cement pre-composition and process for preparing such sulphur cement pre-composition
WO2009150193A1 (en) * 2008-06-11 2009-12-17 Shell Internationale Research Maatschappij B.V. Sulphur cement pre-composition and process for preparing such sulphur cement pre-composition
EA018485B1 (en) * 2008-06-11 2013-08-30 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Sulphur cement pre-composition and process for preparing such sulphur cement pre-composition
US8545616B2 (en) 2008-06-11 2013-10-01 Shell Oil Company Sulphur cement pre-composition and process for preparing such sulphur cement pre-compositon
WO2011000837A1 (en) 2009-07-01 2011-01-06 Shell Internationale Research Maatschappij B.V. Sulphur cement pre-composition and sulphur cement product
EA022111B1 (en) * 2009-07-01 2015-11-30 Шелл Интернэшнл Рисерч Маатсхаппий Б.В. Sulphur cement pre-composition, sulphur cement product (embodiments), processes for preparing the same and wax-based pre-composition

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