BE390434A

BE390434A -

Info

Publication number: BE390434A
Authority: BE

Description

       

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    Procède   pour l'amélioration et l'accroissement des proprité des agents. 



   On sait que le durcissement des ciments à pris e lente ou rapide(portland,la  iti  er,alumineux,pouzz   olane)pr  oviont des différentes réactions qui accompagnent les phénomènes de prise et   qu'il y   a intérêt à ce que cette réaction ne soit pas   ex-   trèmement lent e car, en pratique, elle deviendrait. Inutilisable. 



   On sait notamment,que pour   accélérer   la réaction, on emploie couramment,dans le ciment de laitier,du.   carbonate   de sodium, et dans le ciment   artificiel, du     chlorure   de calcium. 



   Les différentes réactions qui doivent amener les phénomènes de aristallisation sont,d'ailleurs,amorcées par certains pro- duits qui,ajoutés à la chaux, produisent des accélérations de réactin,tels sont les sulfates de chaux et les carbonates et        sulfat es   alcalins. 



   Maigre ces différents produits,les ciments de toutes les catégories   donnant, en   mortier plastique des résistances qui, 

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      bien, que voisines,sont classables par origines ou familles. 



   En   outre,dans   les procédés usuels de fusion du ciment, les oxydes de fer, normalement   contenus   dans la matière bru.te,sont réduits par la température de   fizsion   qui règne dans les fours. 



   La présente invention a pour objet l'incorporation dans les ciments, soit au cours de leur fabrication,soit au moment de leur emploi,d'oxydes métalliques,comme les oxydes de fer,   2 2 2   8,   3 4     2 3   2 Fe O,Fe 0 , Fe 0 Fe 0   ,-d'aluminium,Al   0   ,d'étain,Sn   0 , 
2   de manganèse,Mn   O,Mn 0 , etc* etc.....

     -oette   incororation consistant en 1' Emploi d'un seul de   cas   oxydee, ou en un mé- lange de   plusieurs   d'entre eux,c'est ainsi que l'oxyde fer 
2 3   rique   Fe 0 à l'état de poudre   impalpable,mél  angé à l'oxyde ferreux Fe   0,se   combinera en un oxyde intermédiaire, ou oxyde magnétique,-et ce sera alors cet oxyde magnétique qui amor- cera la réaction recherchée. 



   Ces oxydes qui resteront stables dans la masse pulvéru- lente se transformeront en catalyseur, dès qu'ils seront en présence de l'oxyde d'hydrogène qui sera utilisé pour la   confection   du mortier, en lui procurant un durcissement plus rapide et en lui communiquant,par la suite,des résistances insoupçonnées et nullement comparables aux résistances actuel- lement connues tant à la compression,la perméabilité,la des- tructin. et la décomposation   L'accélération   ainsi obtenue permettra,notamment dans l'emploi du ciment armé,un décoffrage plus rapide ce qui représaltéra une diminution notable des   dopons  es de mat ériel. 



   Enfin,ces oxydes qui seront incorporés aux ciments, per- mettront à ces derniers,quelle que soit leur classé(artifi-   ciel,laitier, etc...   etc.. )de posséder des résistances sem- blables,presque identiques,dans tous les domaines et de former ainsi une nouvelle   famille, celle   des Ciments   oxydés,,*   

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 EMI3.1 
 A titrée d' eg enple, or. a jout era à un oime.nt que1.o anqiÍe( (portl,nd,haut--fourneu,eto...)en vue de lui acquérir les qualités exposées plus haut,de deux à douze pour   cent, en   poids 
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 d'un oxyde métallique ou d'un mélanged1xydes métalliques,en'- tre autres :

   Ex. a/ Protoxyde de fer....................... 30 parties 
Peroxyde de   fer........................   30 parties 
Oxyde de manganèse..................... 40 parties. b/ Oxyde   ferrique.........................100   parties; 
0/   Sesquioxyde   d e   fer....................   90 parties; 
Oxyde de   manganèse....................   10 parties ; d/ Oxyde ferreux........................ 100 parties : e/ Oxyde de   manganèse...................   80   partiesi   
Oxyde ferreux......................... 20 parties; f/ Oxyde de fer hydraté   gélatineux.......   100 parties; g/Oxyde de manganèse   hydrate............  100 parties; h/ Oxyde d'aluminium hydraté............. 90 parties;

   
Oxyde   manganeux .......................   10 parties; il Protoxyde de plomb hydraté............ 90 parties; 
Oxyde manganique...................... 10 parties; 
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 j( Eto...... et 0 ......... etc .............. selon que l'on aura voulu atteindre le maximum de résistance àu béton à l'air,à 1' eau,en eaux nocives, sélénit ei;Lses eau de   mer,eto......   eto.......,sous terre, - en mileu humide,- en terrain fortement   sulfaté,-etc ......   etc.. 
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 Les proportions indiquées peuvent ,nat-u,rrell ement, va- rier suivant de larges mesures,sans pour cela,s'écarter de l'invention. 



   REVENDICATIONS ------------ 1 .   Procède   pour l'amélioration et 1'accroissement des   propr-   
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 tés des ciment s, aarnet érlsé en ce que l' invention a pour objet: a).-L'incorporation des oxydes m8talliqu,es dans n'importe 

**ATTENTION** fin du champ DESC peut contenir debut de CLMS **.



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    Proceeds for the improvement and the increase of the properties of the agents.



   We know that the hardening of cements with slow or fast setting (portland, iti er, aluminous, pozz olane) pr oviont the various reactions which accompany the setting phenomena and that it is advantageous that this reaction is not not extremely slow because, in practice, it would become. Unusable.



   It is known in particular that, in order to accelerate the reaction, is commonly used, in slag cement,. sodium carbonate, and in artificial cement, calcium chloride.



   The various reactions which must bring about the phenomena of aristallization are, moreover, initiated by certain products which, added to the lime, produce accelerations of reactin, such as lime sulphates and alkaline carbonates and sulphates.



   Lean these different products, the cements of all categories giving, in plastic mortar resistances which,

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      well, that neighbors, are classifiable by origins or families.



   In addition, in the usual cement melting processes, the iron oxides, normally contained in the raw material, are reduced by the fizsion temperature which prevails in the furnaces.



   The present invention relates to the incorporation into cements, either during their manufacture or at the time of their use, of metal oxides, such as iron oxides, 2 2 2 8, 3 4 2 3 2 Fe O , Fe 0, Fe 0 Fe 0, -aluminum, Al 0, tin, Sn 0,
2 manganese, Mn O, Mn 0, etc * etc .....

     This incororation consisting of the use of only one of the oxidized cases, or of a mixture of several of them, for example iron oxide.
2 3 ric Fe 0 in the state of impalpable powder, mixed with ferrous oxide Fe 0, will combine into an intermediate oxide, or magnetic oxide, and it will then be this magnetic oxide which will initiate the desired reaction.



   These oxides, which will remain stable in the pulverulent mass, will transform into a catalyst, as soon as they are in the presence of the hydrogen oxide which will be used for making the mortar, giving it a more rapid hardening and giving it , thereafter, unsuspected resistances and in no way comparable to the currently known resistances both to compression, permeability and destruction. and decomposition The acceleration thus obtained will make it possible, in particular in the use of reinforced cement, to remove the formwork more quickly, which will represent a notable reduction in the dopons of the material.



   Finally, these oxides which will be incorporated into the cements, will allow the latter, whatever their classification (artificial, slag, etc ... etc ..) to have similar resistances, almost identical, in all domains and thus form a new family, that of Oxidized Cements, *

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 EMI3.1
 A titled of eg enple, or. a jout will be at an oime.nt que1.o anqiÍe ((portl, nd, blast furnace, eto ...) in order to acquire the qualities set out above, from two to twelve percent, by weight
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 of a metal oxide or of a mixture of metal oxides, including:

   Ex. A / Iron protoxide ....................... 30 parts
Iron peroxide ........................ 30 parts
Manganese oxide ..................... 40 parts. b / Ferric oxide ......................... 100 parts;
0 / Iron sesquioxide .................... 90 parts;
Manganese oxide .................... 10 parts; d / Ferrous oxide ........................ 100 parts: e / Manganese oxide .............. ..... 80 parts
Ferrous oxide ......................... 20 parts; f / Gelatinous hydrated iron oxide ....... 100 parts; g / Manganese oxide hydrates ............ 100 parts; h / Hydrated aluminum oxide ............. 90 parts;

   
Manganous oxide ....................... 10 parts; he Hydrated lead protoxide ............ 90 parts;
Manganic oxide ...................... 10 parts;
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 j (Eto ...... and 0 ......... etc .............. depending on whether we want to reach the maximum resistance to concrete at air, in water, in noxious waters, selenit ei; Lses sea water, eto ...... eto ......., underground, - in humid environment, - in highly sulphated soil ,-etc., etc..
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 The proportions indicated may, of course, vary according to large measures, without thereby departing from the invention.



   CLAIMS ------------ 1. Proceeds for the improvement and increase of property
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 tees of cement s, aarnet erlsé in that the object of the invention is: a) .- The incorporation of metal oxides, es in any

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Claims

what oiment. b) .- The incorporation of metal oxides in cements, <Desc / Clms Page number 4> this incorporation being made directly into the ûsin, during the fabrication.du. cement. c) The incorporation of metal oxides in the cement, this incorporation being made at the time of use, before or during the preparation of the mortar. d) .- The combination or reaction caused by the presence of these oxides in the mortars during the preparation of these mortars. e). - The remarkable qualities of resistance to compression, to permeability, to destruction and to decomposition which these cements thus oxidized acquire.

f) .- The incorporation of these metal oxides in cements which set more or less slowly, always giving a faster hardening. g). - The use of metal oxides in cement, constituting a new cement, called "Oxidized Cement" capable of receiving, thanks to its special qualities, many or new private or industrial applications. f) .- The catalytic action which arises from the presence of metal oxides in cements, given that these oxides are Incapable, by themselves, to set, but they react as soon as they are in the presence of hydrogen oxide. g). - As a new industrial product, "Oxidized Giment" should be considered as a new industrial product.

2 A method for improving and increasing the properties of cement s, according to claim? 1, Substantially as described above.