CH476901A - Process for cleaning and protecting the surfaces of construction materials of a mineral nature, in particular bricks - Google Patents
Process for cleaning and protecting the surfaces of construction materials of a mineral nature, in particular bricksInfo
- Publication number
- CH476901A CH476901A CH1689467A CH1689467A CH476901A CH 476901 A CH476901 A CH 476901A CH 1689467 A CH1689467 A CH 1689467A CH 1689467 A CH1689467 A CH 1689467A CH 476901 A CH476901 A CH 476901A
- Authority
- CH
- Switzerland
- Prior art keywords
- cleaning
- product
- protecting
- parts
- precipitation
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 11
- 239000011449 brick Substances 0.000 title claims description 9
- 238000004140 cleaning Methods 0.000 title claims description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 title claims description 5
- 239000011707 mineral Substances 0.000 title claims description 5
- 239000004035 construction material Substances 0.000 title claims description 3
- 239000000463 material Substances 0.000 claims description 19
- 238000001556 precipitation Methods 0.000 claims description 8
- 150000001412 amines Chemical class 0.000 claims description 7
- 239000004567 concrete Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000003518 caustics Substances 0.000 claims description 3
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims description 2
- 235000019253 formic acid Nutrition 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims description 2
- 229920002050 silicone resin Polymers 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 7
- 235000010755 mineral Nutrition 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000002969 artificial stone Substances 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 235000011118 potassium hydroxide Nutrition 0.000 description 2
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- 239000012445 acidic reagent Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011431 lime mortar Substances 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/53—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone involving the removal of at least part of the materials of the treated article, e.g. etching, drying of hardened concrete
- C04B41/5315—Cleaning compositions, e.g. for removing hardened cement from ceramic tiles
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
Procédé de nettoyage et de protection des surfaces de matériaux de construction de nature minérale, notamment de briques Lorsqu'on assemble des matériaux de construction de nature minérale, tels que des briques de parement en terre cuite ou des briques ordinaires, ou bien que l'on procède au revêtement de surfaces en pierres naturelles ou artificielles par crépissage, au moyen de mortier de ciment, de chaux ou de mortier mixte de chaux et ci ment ou que la surface soit constituée par du béton brut de décoffrage, on constate sur la face extérieure du ma tériau une formation de taches ou de traînées blan châtres, produites par des réactions dues à des consti tuants du mortier et/ou du matériau.
En outre, les sur faces sont fréquemment salies par du lait de ciment, lors du nettoyage des matériaux au moment du mon tage.
La présente invention vise à obvier à cet inconvé nient et a pour objet un procédé de nettoyage et de protection des surfaces de matériaux de construction de nature minérale, de brique ou de béton, caractérisé en ce qu'on applique sur le matériau un produit acide conte nant une amine oxyéthylée, cette application amenant la formation à la surface du matériau d'une précipita tion d'aspect blanchâtre, en ce que, après cessation complète de ladite précipitation, on rince la surface du matériau au moyen d'eau et en ce que, après un sé chage d'une durée de quelques jours, on applique sur la surface du matériau un produit à base de silicone destiné à éviter la pénétration des eaux pluviales dans le matériau.
A titre d'exemple, le procédé suivant l'invention peut être exécuté de la manière suivante sur une surface de parement de briques en terre cuite ou de béton: on fait pénétrer préalablement dans la brique une solution d'un alcali caustique ayant un pH d'environ 14, par exemple de la potasse caustique ou de la soude caus tique, ladite solution amenant après séchage la forma tion de cristaux à la surface du matériau.
On applique ensuite sur ces cristaux un produit acide, composé de 45 parties d'acide formique, de 5 parties d'amine oxy- éthylée dont la formule est la suivante
EMI0001.0005
dans laquelle n a une valeur comprise entre 5 et 1000, ladite amine oxyéthylée contenant 50 parties d'eau, cette quantité pouvant varier selon la porosité du matériau à traiter et la nature des produits de détérioration à préci piter.
Il a été démontré que l'addition à l'acide d'un pro duit aminé à base d'oxyde d'éthylène permet d'obtenir une dislocation des résidus provoqués par la réaction de l'acide sur la base caustique ou sur l'alcalinité du béton.
Le réactif acide provoque à l'extérieur de la brique ou du béton une précipitation d'aspect blanchâtre sur la base alcaline décrite. De ce fait, il est nécessaire de rincer abondamment la surface du matériau avec de l'eau additionnée d'une amine oxyéthylée. Il est néces saire de poursuivre les applications de ce produit acide aussi longtemps que subsiste une précipitation.
Lorsqu'il ne se forme plus aucune précipitation, on rince la surface du matériau au moyen d'une éponge imbibée d'eau pure, ce qui a pour effet dé faire dis paraître complètement les dépôts dus à la précipitation. Après quelques jours de séchage, on applique, selon la nature du matériau traité, par exemple, un produit com posé de silicone alcalin suivi d'une application de résine de silicone, de manière à éviter une pénétration d'eau venant de l'extérieur du parement.
On pourrait remplacer la potasse caustique par de la soude caustique comme substance neutralisante, dans la même proportion que celle qui a été indiquée. Le procédé décrit pourrait être simplifié dans le cas où des éléments de la construction, revêtus d'une couche de peinture à l'huile ou fabriqués en aluminium, sont sensibles à l'action d'un produit alcalin en supprimant la première application alcaline de potasse ou de soude caustique.
Le procédé décrit pourrait également s'appliquer à des revêtements par crépissage de surface, en pierre naturelle ou artificielle, ou sur du béton.
A method of cleaning and protecting the surfaces of building materials of a mineral nature, in particular bricks When assembling building materials of a mineral nature, such as clay facing bricks or ordinary bricks, or else the one proceeds to the coating of surfaces in natural or artificial stones by plastering, by means of cement mortar, lime or mixed lime and cement mortar or that the surface is constituted by rough concrete stripping, one notes on the face on the outside of the material, the formation of white-brown stains or streaks produced by reactions due to constituents of the mortar and / or the material.
In addition, the surfaces are frequently soiled with cement milk when cleaning the materials during assembly.
The present invention aims to obviate this drawback and relates to a process for cleaning and protecting the surfaces of construction materials of a mineral nature, brick or concrete, characterized in that an acid product is applied to the material. containing an oxyethylated amine, this application causing the formation on the surface of the material of a precipitation of whitish appearance, in that, after complete cessation of said precipitation, the surface of the material is rinsed by means of water and in that, after drying for a period of a few days, a silicone-based product intended to prevent the penetration of rainwater into the material is applied to the surface of the material.
By way of example, the process according to the invention can be carried out as follows on a facing surface of terracotta bricks or concrete: a solution of a caustic alkali having a pH is made to penetrate beforehand into the brick. of about 14, for example caustic potash or caustic soda, said solution causing, after drying, the formation of crystals on the surface of the material.
Then applied to these crystals an acid product, composed of 45 parts of formic acid, 5 parts of oxyethylated amine, the formula of which is as follows
EMI0001.0005
in which n has a value between 5 and 1000, said oxyethylated amine containing 50 parts of water, this quantity being able to vary according to the porosity of the material to be treated and the nature of the deterioration products to be precipitated.
It has been shown that the addition to the acid of an amino product based on ethylene oxide allows to obtain a dislocation of the residues caused by the reaction of the acid on the caustic base or on the acid. alkalinity of concrete.
The acid reagent causes a whitish precipitation on the exterior of the brick or concrete on the described alkaline base. Therefore, it is necessary to thoroughly rinse the surface of the material with water containing an oxyethylated amine. It is necessary to continue applications of this acidic product as long as precipitation remains.
When no more precipitation is formed, the surface of the material is rinsed with a sponge soaked in pure water, which has the effect of completely dissolving the deposits due to the precipitation. After a few days of drying, depending on the nature of the material treated, for example, a product consisting of alkaline silicone followed by an application of silicone resin is applied, so as to prevent water from entering from the outside. of the siding.
Caustic potash could be replaced by caustic soda as a neutralizing substance, in the same proportion as that which has been indicated. The method described could be simplified in the case where elements of the construction, coated with a layer of oil paint or made of aluminum, are sensitive to the action of an alkaline product by eliminating the first alkaline application of potash or caustic soda.
The method described could also be applied to coatings by surface plastering, in natural or artificial stone, or on concrete.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1689467A CH476901A (en) | 1967-11-30 | 1967-11-30 | Process for cleaning and protecting the surfaces of construction materials of a mineral nature, in particular bricks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1689467A CH476901A (en) | 1967-11-30 | 1967-11-30 | Process for cleaning and protecting the surfaces of construction materials of a mineral nature, in particular bricks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH476901A true CH476901A (en) | 1969-08-15 |
Family
ID=4421127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1689467A CH476901A (en) | 1967-11-30 | 1967-11-30 | Process for cleaning and protecting the surfaces of construction materials of a mineral nature, in particular bricks |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH476901A (en) |
-
1967
- 1967-11-30 CH CH1689467A patent/CH476901A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |