WO1998058751A1 - Procede de nettoyage de surface poreuse, notamment en pierre et composition adaptee - Google Patents
Procede de nettoyage de surface poreuse, notamment en pierre et composition adaptee Download PDFInfo
- Publication number
- WO1998058751A1 WO1998058751A1 PCT/FR1998/001305 FR9801305W WO9858751A1 WO 1998058751 A1 WO1998058751 A1 WO 1998058751A1 FR 9801305 W FR9801305 W FR 9801305W WO 9858751 A1 WO9858751 A1 WO 9858751A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- poultice
- particles
- stone
- absorbent
- solvent
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0014—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by incorporation in a layer which is removed with the contaminants
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/002—Arrangements for cleaning building facades
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces
- C11D2111/24—Mineral surfaces, e.g. stones, frescoes, plasters, walls or concretes
Definitions
- the present invention relates to a method for cleaning a stone surface and more particularly for cleaning the stains of time on monuments.
- the invention also relates to the composition making it possible to carry out the method.
- a first well-known means is of the mechanical type and consists in rubbing the surface with a tool of the railway type in order to remove the dirt with part of the surface of the stone, inevitably.
- This mechanical cleaning is of the degrading type on the one hand and on the other hand it is long and tedious as one can easily imagine.
- surfaces are complex in shapes, the work becomes all the more complex and tedious as you have to change tools to penetrate corners and other corners.
- Another means consists in spraying under pressure a fluid, air or water, loaded with abrasive particles such as sand, corundum.
- abrasive particles such as sand, corundum.
- the abrasive capacities and the projection pressure are adapted according to the hardness of the stone to remove as little stone as possible while achieving the desired quality of cleaning. This means is an indisputable progress because it allows to work irregular surfaces, to reach the deepest of small pits, to degrade the stone as little as possible.
- the method for cleaning encrusted particles, in particular generated by pollution, on the irregular surface of a material such as stone is characterized in that it comprises the following steps: - spreading an adherent paste containing a solvent, inside the contour of the surface to be cleaned, like a poultice, said paste having an adhesion capacity greater than that of the particles on the surface to be cleaned in the presence of the solvent,
- the method comprises an additional step of integrating gripping elements in the poultice before drying, said elements remaining accessible on the external surface of the dough, so as to be able to remove this poultice, for example, a net embedded in the poultice when spreading on the material.
- At least one degreaser for controlling the mechanical characteristics of the absorbent during drying until hardening, in proportions such that said composition has a paste consistency.
- This composition further comprises fibers to improve the cohesion of the paste and to control the mechanical parameters of the absorbent.
- the absorbent is clay and / or pozzolan and / or pumice and the degreaser is sand or a set of sands, to give examples.
- FIG. 1 shows a photographic photograph taken under a microscope in polarized light transmitted with a film of gypsum
- - Figure 2 shows a photographic photograph taken under the same conditions as Figure 1, but after treatment according to the method of the invention with a suitable composition.
- Figure 1 we note at 10 over the entire height of the arrow indicated, the mass constituting the stone itself, in this case the "tuffeau".
- the irregular surface of the stone is noted 1 2, we can find traces of stone cutting tools.
- the method according to the invention consists in placing on the surface of this stone a composition in the form of a poultice, of allowing said poultice to dry by controlled evaporation and of removing said poultice, which has the effect of removing the layer of dirt, in l the gypsum as seen in Figure 2.
- This process thus makes it possible to treat the stone without degrading it mechanically, without altering the colors but on the contrary by reducing them to natural tones.
- the mechanism of the process consists in detaching the dirt from the stone, migrating it towards the face of the poultice opposite and fixing it on this surface.
- a suitable composition must be provided and examples can be given.
- composition according to the invention for implementing the process which has just been described, comprises:
- the absorbent is chosen from clays such as attapulgite, which has a strong tendency to adhere to stone surfaces. This clay used alone would have drawbacks. Its too great adhesion would make removal difficult, soiling would be extracted but part of the stone too.
- the solvent in this case a solution based on water and adjuvants such as surfactants for example, makes it possible to give the dough its initial consistency for depositing in the form of a poultice and ensures the removal of dirt from the stone during the controlled evaporation time through the poultice to the surface of said poultice in contact with air.
- the degreaser As for the degreaser, sand, pozzolan, pumice, it has a very specific regulatory role. In fact, the capacities of the degreaser as a grain filler with a much larger particle size than that of the absorbent allow it precisely to control the adhesion capacity of the absorbent.
- the degreaser has significant water retention capacities, which also makes it possible to control the parameters of evaporation of the solvent and even to ensure a certain reversibility by again wetting the poultice by spraying for example.
- the degreaser also influences the "nervousness" of the clay and leads to a better plating of the poultice on the surface of the stone.
- the degreaser has water absorption capacities greater than those of stone, so that the migration takes place well from stone to the poultice and not vice versa.
- An improvement to this composition consists in adding to the pulp long fibers of mineral or organic origin, glass wool, rock wool, before spreading, to ensure good cohesion of this pulp and further improve the contact between the poultice and the surface of the stone to be treated. These fibers also influence the nervousness of the clay and allow a good fit.
- Another improvement for implementation in large areas consists in introducing into the poultice, after spreading, a weft in the form of a net for example, letting grasping loops emerge. After drying, the traction on the gripping loops allows the poultice to be removed in whole sections, which is very fast and is carried out without noise.
- composition and the method according to the invention it is also possible, with the composition and the method according to the invention, to ensure the removal of saline efflorescence on the surface of the stones of facades or monuments.
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU82212/98A AU8221298A (en) | 1997-06-24 | 1998-06-23 | Method for cleaning a porous surface, in particular a stone surface and adapted composition |
| EP98932252A EP1015139A1 (fr) | 1997-06-24 | 1998-06-23 | Procede de nettoyage de surface poreuse, notamment en pierre et composition adaptee |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9708162A FR2764826B1 (fr) | 1997-06-24 | 1997-06-24 | Procede de nettoyage de surface poreuse, notamment en pierre et composition adaptee |
| FR97/08162 | 1997-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1998058751A1 true WO1998058751A1 (fr) | 1998-12-30 |
Family
ID=9508593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/FR1998/001305 Ceased WO1998058751A1 (fr) | 1997-06-24 | 1998-06-23 | Procede de nettoyage de surface poreuse, notamment en pierre et composition adaptee |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1015139A1 (fr) |
| AU (1) | AU8221298A (fr) |
| FR (1) | FR2764826B1 (fr) |
| WO (1) | WO1998058751A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7517520B2 (en) | 2003-03-26 | 2009-04-14 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
| US7537767B2 (en) | 2003-03-26 | 2009-05-26 | Cytis Biotechnology Ag | Melan-A- carrier conjugates |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2967422B1 (fr) | 2010-11-17 | 2014-01-24 | Groux Conseil | Composition seche pour compresse de nettoyage ou de dessalement et compresse correspondante |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1525465A (en) * | 1975-12-15 | 1978-09-20 | Shell Int Research | Method of cleaning surfaces |
| US5505787A (en) * | 1993-02-01 | 1996-04-09 | Total Service Co., Inc. | Method for cleaning surface of external wall of building |
| WO1996040454A1 (fr) * | 1995-06-07 | 1996-12-19 | Jet Blast Products Corporation | Procede de nettoyage |
-
1997
- 1997-06-24 FR FR9708162A patent/FR2764826B1/fr not_active Expired - Fee Related
-
1998
- 1998-06-23 AU AU82212/98A patent/AU8221298A/en not_active Abandoned
- 1998-06-23 EP EP98932252A patent/EP1015139A1/fr not_active Withdrawn
- 1998-06-23 WO PCT/FR1998/001305 patent/WO1998058751A1/fr not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1525465A (en) * | 1975-12-15 | 1978-09-20 | Shell Int Research | Method of cleaning surfaces |
| US5505787A (en) * | 1993-02-01 | 1996-04-09 | Total Service Co., Inc. | Method for cleaning surface of external wall of building |
| WO1996040454A1 (fr) * | 1995-06-07 | 1996-12-19 | Jet Blast Products Corporation | Procede de nettoyage |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7517520B2 (en) | 2003-03-26 | 2009-04-14 | Cytos Biotechnology Ag | Packaging of immunostimulatory oligonucleotides into virus-like particles: method of preparation and use |
| US7537767B2 (en) | 2003-03-26 | 2009-05-26 | Cytis Biotechnology Ag | Melan-A- carrier conjugates |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1015139A1 (fr) | 2000-07-05 |
| FR2764826B1 (fr) | 1999-09-03 |
| AU8221298A (en) | 1999-01-04 |
| FR2764826A1 (fr) | 1998-12-24 |
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