DE1943634A1 - Process for the production of a floor covering from anhydride binder and mortar to carry out this process - Google Patents

Description

85 NÜHNBBRG Kewlerplal «I

Telephone 0911/558176 : Telegrams: Castle patron

10 026

Dipl.-Volksw. Erich Höllfritsch, Behringersdorf (Mfr.)

Process for the production of a floor covering from anhydrite binder and mortar to carry out this procedure

Achieving an exactly horizontal or even surface when laying a floor covering, e.g. screed made of anhydrite binder, has always been critical. To date, this problem has not yet been solved satisfactorily, although the irregularities occurring in the surface formation of the floor covering have always been perceived as a disadvantage. This deficiency is particularly evident when floors made of tiles, plastic plates and sheets and similar prefabricated parts are laid on a screed covering. According to the aforementioned irregularities are the the wearing surface forming finished parts in many places hollow and tend to offset from one another vertically with their edges at the abutment Tellen θInd.Man was therefore often forced when laying the finished parts, in particular for tiles, these in a mortar bed to lay, to reline, move the surface

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the floor covering to smooth out any unevenness.

The measures used so far for leveling the The surface of a screed covering is inadequate and proportionate laborious. Only a very limited area can be set up with a spirit level. With a hose level, with which larger distances can be bridged, are also only point-by-point height adjustment points definable. The leveling of the surface of the pavement between those widely spaced and only occurring at points Level adjustment parts are largely from the sense of proportion and skill of the craftsman dependent.

The present invention is based on the consideration that the above-mentioned problem could be solved if the mortar made with anhydrite were of such a nature, that after adding the mixing water it levels itself under the influence of gravity, like this is known from liquids. The well-known mixed with water and sand in an amount of 2ΟΟ-3ΟΟ percent by volume based on the anhydrite containing anhydrite screed mortar however, it does not have a sufficient ability to peel when spreading out on a load-bearing surface, e.g. on the solid ceiling, to be able to level it yourself in this way. nen. The pourability of the mortar "would in principle can be increased by giving the mortar a greater Amount of mixing water than would have been given up to now.

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However, this would reduce the strength of the screed covering to below the permissible limit can be reduced ..

The object on which the invention is based then consists in a process for the production of a floor covering which is supported on a load-bearing base and is based on To create anhydrite binder in which the anhydrite binder is self-leveling to achieve one for one with one Liquid comparable spreading sufficient flowability required amount of water processed without reducing the strength of the covering to below the permissible limit.

The solution to the problem of the invention is that the anhydrite binder (synthetic or natural anhydrite plus stimulator) with the addition of a maximum of 50 # sand, based on the anhydrite, with water with the addition of a sedimentation of the solids in water and an increase in the strength of the hardened mass Substance is processed into a flowable mortar mass, the weight ratio of water to anhydrite binder can increase up to 50: 100, and that the mortar mass is then poured over the supporting base and flows apart to form a horizontal surface, whereupon it solidifies in this state. The ratio of water to binder should preferably not exceed 40-100 and the anhydrite should be processed in an unlean state, i.e. without sand. The less sand the anhydrite mortar contains, the better it is

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the flowability of the wet mortar. Even if already through the low sand content, the flowability of the mortar mass when using the conventional and for the strength of the screed decisive weight ratios of water to anhydrite in certain However, the amount is increased, it is still insufficient for such spreading of the mortar on the load-bearing Underlay that the mass levels itself in · It is therefore an essential feature of the invention that the Mortar is an additive that retards sedimentation.

. will, of course, this addition need not consist of a single substance, but also of several Substances can be composed. For the purposes of the invention, preferably water-soluble cellulose ethers (methyl celluloses, Carboxymethyl celluloses) application known to be used as a suspending agent for a wide variety of purposes Find. For the purposes of the invention, those cellulose ethers are particularly suitable, which have a viscosity between 20 and 8000 cP, especially 200 and 2000 cP in a 2 # aqueous solution. It is true that such cellulose

w sederivate used in mortar, but for a purpose not comparable with the invention. With such an additive, the invention aims to increase the flowability of the mortar mass so that it spreads as quickly and evenly as possible on the substrate. Premature settling of the solids from the mortar slurry would impair the flowability . pregnant and thus question the realization of the idea of invention.

The amount of sedimentation-retarding substance used "

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or substances depends on the desired rate of pleasure and thus also on the length of the flow paths. In general, the additive is between 0.01 and 5 wt. I "based on anhydrite.

Since, according to the invention, an additive that increases the strength of the hardened anhydrite screed is added to the mortar, the anhydrite mortar according to the invention can be processed with more water than the known anhydrite mortar, which of course also has a favorable effect on the flowability of the mortar mass. As strength-increasing additives for the purposes of the invention in particular the sulfite- or sulfonic acid-modified resins based on an amino-s-triazine with at least two NH ₂ groups have proven to be suitable, with the resin expediently also metal oxides or hydroxides, in particular those of Alkaline earth metals and aluminum are added. The preferred alkaline earth oxide is GaO. The resin content is generally between 0.5 and 10% by weight, that of the oxide between 1 and 6% by weight, based on the anhydrite binder. Good results were achieved with an addition of about 4 wt. $ Of the aforementioned resin and $> CaO 1.5 wt., Based on anhydrite. With a ratio of water to anhydrite binder of 35: 100, flexural tensile strengths of over 110 kg / cm could be determined after a setting time of 28 days. To achieve good strength, it has proven to be useful if the weight ratio of resin to alkaline earth

"»

Oxide is chosen so that at least 1 hol alkaline earth is available per mol acid group.

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In this context, too, it should be pointed out that, of course, there are also several types of strength-increasing Substances used as an additive for the mortar according to the invention can be. Of course, the invention also does not exclude the addition of substances to the mortar which both delay sedimentation and increase strength.

The amount of strength-increasing substance added depends on the required strength values. For in the event that a waterproof screed covering is to be made from anhydrite binder, a larger amount is required used as a strength-increasing additive than in those cases in which there is a water resistance of the screed does not arrive.

In addition, the proportions of the individual additives and the proportion of water in the mortar mass will be coordinated in such a way that the respective requirements, which can be very different, are taken into account. In any case, however, one must ensure that the mortar mass has sufficient flowability so that the aim of the invention, namely that the mass can level itself when spreading on the supporting base, is achieved.Tile speeds of 2 κ / aln have proven to be practical

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The method according to the invention can also be thereby improve that the anhydrite mortar still has wetting agents or surface-active substances and possibly also Antifoam agents can be added. These additives also have a beneficial effect on the flowability of the mortar mass the end. For the purposes of the invention, the naphthalenesulfoic acid-formaldehyde condensation products have proven particularly useful as wetting agents proven valuable. Good results were obtained with additions of approx. 0.1% by weight on anhydrite binders. The wetting agents used according to the invention also cause a delay the sedimentation of the solids in the mortar slurry.

The addition of an anti-foaming agent to the mortar mass is intended to create a uniform or smooth Surface of the 'screed covering can be ensured. Antifoam agents are sufficient from the literature known, so that this does not need to be discussed in detail (cf. Ghemielexikon Römpp). this applies also for the quantities of anti-foaming agents used

When it was said above that the anhydrite preferentially in un-leaner. , i.e. sand-free condition 'should, then this does not rule out that other substances can be added to the anhydrite that do not impair the flowability of the Nassaiörtele to such an extent, that thereby * the realization of the invention is impossible

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The floor covering according to the invention should be understood to mean not only a closed top layer but also a grid-shaped system of webs, the horizontal and flat surface of which serves as a leveling aid or support surface for prefabricated panels. For this purpose, a system of at least partially communicating channels is laid on the supporting base, into which the compound is poured. Due to its flowability, the mass is distributed in the contiguous channels, forming a flat surface overall in a horizontal plane, and solidifies in this state. Bars or the like. . collapses to form the channel side walls and lays the gutters thus obtained between the side walls with a thin, pliable film. The sheet prevents the leakage of the liquid mass and gives way under the weight thereof, so that the mass is at the (uneven) pad over the entire channel length and the channel side walls into abutment ^ _k. After the liquid mass has been evenly distributed with the formation of the horizontal plane surface - possibly supported by a vibrator placed on the channel-forming elements - and then solidified. the rails, bars or the like can be removed and are available for repeated use . After folding down or

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When the film is torn off, the horizontal plane surface of the webs is exposed. Of course, the channels can also be formed by grooves made of plastic for this purpose, cardboard protected against moisture, or simply by foils stretched in the form of grooves, the intersection of which. Connection points for the passage of the compound between the channel sections are open and sealed against the compound flowing out of the channel system.

The surface of the webs obtained in this way can now be used to deduct conventional covering compounds cast into the spaces delimited by the webs, with the web surfaces as Guide rails are used for the pulling tool. In this way, the device inaccuracies that occur with conventional work rails can be avoided. It is of course also possible, the spaces between the webs also with that for the production according to the invention to fill up the mass used in the flooring, whereby the web surfaces represent an exact measure for the filling heights.

However, especially in the interest of quick completion of a floor, the webs are used as load-bearing elements for prefabricated panels, which are placed on the web surface directly or via an intermediate layer and thus

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on the one hand after filling the joints between the joints ■ Form an exactly horizontal and consistently flat surface. The prefabricated panels can be used depending on the purpose of the Soil already serve as a usable floor or, in turn, be a load-bearing layer for special usable floor coverings. The between the applied flats and the supporting base formed cavities can advantageously accommodate underfloor heating are made accessible, the leads are passed through the webs if necessary and with heat-storing and / or heat-reflecting layers can be surrounded or underlaid.

In spite of the fact that it can be used for the inventive production of a floor covering, its even flow is limited to certain areas of the surface. When producing a particularly large floor covering from the mass, the space to be filled above the supporting base is therefore preferably divided into separate casting rooms, over the surface area of which the mass can spread evenly with the formation of a horizontal surface due to its viscosity, possibly also here with the use of vibrators at the separation areas between the casting rooms. However, it must be ensured that the surfaces of the mass, in turn, are in each Gießräumen generally in a common horizontal plane ·

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In a further embodiment of the method according to the invention, for subdivision into separate casting rooms on the base arranged at least partially transparent and / or provided with at least one recess each partition. By the recesses or transparent areas of the partition walls can be seen when filling a pouring area, the surface level recognize the hatred in the neighboring pouring area and get one Bring about a comparison between the surfaces. It goes without saying that the transparent areas or recesses in the partition walls for this purpose over the intended Must protrude from the fill level. If the individual casting spaces are filled up one after the other, it is advisable to use the openings the partition walls to provide a lock that is only opened when approximately in the two adjacent casting rooms the same fill level has been reached. The transparent areas of the partition walls are expediently kept thin, in order to keep the inaccuracies caused by optical refraction when comparing the filling heights as low as possible. The closure for the recess can expediently be designed as a transparent plate, for example made of Plexiglas be.

Preferably, the Gießräume however divided by means of at least partly transparent hollow walls, which are at least partially connected to one another to a System..kommunizierender vessels into which a low-viscosity liquid auxiliary,

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preferably colored water, which is filled also distributed over large distances with the formation of a horizontal total surface. In this catfish is for everyone individual casting rooms are given a filling mark for all casting rooms in the same horizontal plane, which is independent of the filling status of the remaining casting rooms. Through this the casting spaces can be filled independently of one another and, with regard to their filling level, with the surface of the auxiliary liquid be brought into agreement. Such a channel byyte made of hollow walls for the reception of the auxiliary liquid can be produced in many ways. So the cavity walls can be made of metal, with only in the side walls Sight glasses are let in at certain intervals. Appropriately, however, one will be careful about the surface to make the auxiliary liquid visible over the largest possible area of the cavity walls. It is a Economic efficiency requirement that such a sewer system, which can be addressed as a leveling device, is not subject to a single use option. The channel system is therefore expediently composed of individual wall sections and connecting pieces Connection allows any repetitive disassembly and reassembly. The parts of such a repeated usable device must be non-destructive from the joint between the adjacent, '' finished cast and solidified planar areas can be lifted. You have to accordingly the intended use robust and against the through

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the filling of the casting spaces occurring lateral pressures be designed so dimensionally stable that the distance between the side walls are not noticeably narrowed, otherwise the level of the auxiliary liquid increases with the number of replenished ones Fields steadily increasing. It is also possible in principle to design the channel system to be open at the top. In the interest of However, dimensional stability and to avoid the ingress of dirt is an all-round closed design of the channel system to give preference except for a few pressure equalization openings. In the following description, based on in the Exemplary embodiments shown in the drawing according to the invention Devices for dividing the space to be filled into individual casting rooms explained in more detail. Subject of The invention is also the composition of the dry mortar for carrying out the method according to the invention. Since the Amounts of the additives according to the invention contained in the dry mortar are only a few percent, based on anhydrite, the additives must be very well distributed in the mortar so that they can fully develop their intended effect. Show it:

1 shows a perspective partial view of an embodiment the device according to the invention in a grid-like arrangement on the supporting base;

2, 3 and 4 connecting pieces for the exemplary embodiment according to FIG. 1 and a plug connection between these and a hollow wall designed as a hollow profile with a cross-sectional area in the form of an equilateral triangle;

Tig 5 a leilsohnltt after the line TV in Figure 4)

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6 shows a side wall designed as a hollow profile with a trapezoidal Cross-section;

Fig. 7 is a perspective part of not two assembled ! Partition walls with cutouts.

In Fig. 1 is a grid system of channels in the form of hollow profiles 2 shown, which are assembled via cross-shaped connecting parts 3 so that their cavities with each other in Connected. The hollow profiles 2 and the connecting parts are on the base 1 shown broken off, for example a concrete ceiling laid out, whereby due to unevenness of the base 1 at the lower edges of the hollow profiles 2 and connecting parts 3 occurring openings are covered by flexible film strips so that they are encompassed by the grid Casting rooms 4 are separated from one another with a certain surface area. Via a filling opening, not shown becomes the contiguous cavity of the. Hollow profiles 2 and connecting parts 3 with a very thin auxiliary liquid, preferably colored water, filled to the extent that the The surface of the liquid adjusting itself in a horizontal plane indicates the average desired bead of the floor covering. Then the individual casting rooms are 4 * with the mortar mass according to the invention is filled to the extent that until their surface, which is due to the good flowability of the mass over the surface of each Giessräumea in a the horizontal plane reached by the fill mark indicated all around by the surface of the auxiliary liquid Filling of the individual casting rooms bia'su der for all casting rooms *

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in a common horizontal plane can in principle be carried out one after the other or at the same time. Due to the more or less large, depending on the design lateral deflection of the hollow profiles with one-sided loading is recommended. more or less simultaneous Filling the casting rooms · After the filling process has been completed and the mass has solidified, the downwardly narrowing side walls formed hollow profiles 2 and connecting parts 3 from the joints between the partial surfaces of the floor covering · After the joints have been poured with a joint compound, the floor covering has a continuous horizontal flat surface on

The excavated hollow profiles and connecting parts can be dismantled and reassembled in any repeatable manner. They thus form a leveling device which, due to a number of individual parts, has to be subdivided Surfaces can be customized. The size of the casting spaces to be partitioned determines the length of the hollow profiles, but it can Several hollow profiles of different lengths can also be provided, which allow for a change in the surface area of the casting rooms with consideration on the flowability of the compound used in each case. Furthermore, connectors can be used for each other put several hollow profiles can be provided, so that different from a smallest basic length of the hollow profiles long cavity walls can be formed.

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In the pig. 2 to 4 are a cross-shaped connecting part 3 » a T-shaped connecting part 5 and an L-shaped connecting part 6 shown, which are used according to the number and position of the hollow profiles to be connected. That L-shaped connecting part 6 in Pig .. 4 is partially broken open shown and leaves the plug connection selected here between the connecting parts 3, 5 and 6 and the hollow profiles 1 recognize. The end of the hollow profile 1 to be connected is inserted into the respective receiving socket of the connecting part. A stop 7 inside the connecting parts ensures that the passage cross-section within the connecting parts cannot be reduced in size or blocked by inserting the hollow profiles too far.

i.

As also from the cross-section of the Pig. 5 after the line V-V the pig. 4 shows the plug connection between the hollow profile and the connecting piece with the help of a sealing ring} ges 8 sealed, which is closed in the circumferential direction between the outer surface of the hollow profile and the inner surface of the receiving socket of the connecting part runs. The sealing ring 8 is expediently glued in a groove 9 of the receiving socket and engages in a further groove 10 in the outer surface of the hollow profile 1 a. On the one hand, this connection ensures that the connected parts can only be slightly offset from one another, bo that the Raetersysteia in as many places as possible

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the base 1 rests, and on the other hand prevents the hollow profile 1 from accidentally slipping out of the respective Receptacle of the connecting part 3, 5 or 6. Of course, other constructions are also conceivable, for example a conical plug connection with a static friction seat. -.

The one in the Pig. 1 to 5, the respective adjacent side surfaces run downwards, ie facing the base 1, at an acute angle towards one another, so that a cross section in the form of an isosceles triangle results. This enables the hollow profiles and the connecting parts to be easily pulled out of the joints between the solidified mass in the individual casting spaces, while the cavity is kept narrow so that only a small volume of auxiliary liquid is required and a small joint width is created. For reasons of production and / or a more stable support, however, other cross-sectional shapes such as the trapea shape shown in FIG. 6 can also be selected. FIG. 6 also shows the attachment of a handle 11, which is used for lifting and transporting the hollow profiles and, of course, can also be provided on the hollow profiles according to FIGS. 1 to 5.

The hollow profiles 1 of the exemplary embodiments shown here are made of a transparent plastic , at least with regard to their side surfaces, so that the surface of the auxiliary liquid over almost the geeant edge area of the

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Casting rooms is visible. The connectors 3, 5 »'6 are there-' against made of a non-transparent plastic, since the refractive index changes with inserted hollow profiles and an apparent kink occurs in the surface of the auxiliary liquid. The upper cover surfaces are also preferred and possibly the bottom surfaces of the hollow profiles and connecting parts made of plastic. The profiles can at least for part of their area can be obtained by continuous casting. The connecting parts can also be used for part of their Surface can be produced in the casting process. The remaining surfaces can be glued or welded, as far as possible It is about plastic · 'The connecting parts 3 »5 and 6 have small openings 12 in their upper covers through which the auxiliary liquid can be filled in quickly air trapped in the leveling device can escape,

Fig. 7 shows a simple embodiment of partition walls 13 with recesses 14. The partition walls 13, for example made of boards, are arranged on the base 1 in a grid shape and connected to one another. Due to the recesses, the transparent slide preferably, not shown with a closable are 14t is, each observed from a casting chamber of the casting space of the adjacent Auffüllhöhe, Abweiohend of the previously described Nivellierein-

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In the case of these simple partition walls, direction is the filling of the one casting room only by observing the filling To orientate the state of the neighboring casting rooms.

The invention is not restricted to the following claims. It includes all features of the description and the drawing that are based on the state of the art are evidently inventive. A self-employed person will be responsible for the leveling measures and facilities described Protection asserted.

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Claims (1)

- 20 claims 1. A process for the production of a floor covering which is supported on a load-bearing substrate and is based on Anhydrite binder, characterized in that the anhydrite with an addition of sand in the amount of a maximum of 50 percent by volume based on the anhydrite and with water with the addition of one that retards the sedimentation of the solids in water and one that retards the strength of the cured ones Wet increasing substance is processed into a flowable mortar mass, the weight ratio from water to anhydrite binder up to 50: 100 can increase, and that the grout is then poured over the supporting surface and under formation bend apart on a horizontal surface, whereupon it is made to solidify in this state. 2. The method according to claim 1, characterized in that the weight ratio of water to anhydrite binder is a maximum of 40: 100. 3. The method according to one or both of the preceding claims, characterized in that the anhydrite is processed in the unleaned state . 4. The method according to one or more of the preceding tests, daduroh'gtk «nns« iohn «t, da ·· waieerlöelioh · Ζ · 1- 109825/1684 ■ ■. 7th lulose ether can be used to delay sedimentation. 5. Method according to one or more of the preceding claims, characterized in that a sulfite- or sulfonic acid-modified resin based on an aminos-triazine with at least two HHp groups is used to increase strength. 6. The method according to claim 5 »characterized in that the resin is a metal oxide or hydroxide, in particular one of the alkaline earth metals or aluminum, preferably Calcium oxide, is added. 7. The method according to claim 6, characterized in that the mass, the resin in an amount between 0.5 and 10% by weight and the oxide in an amount between 1 and 6 Weight # based on anhydrite binder, is added. 8. The method according to one or more of claims 5 to 7, characterized in that the weight ratio of Resin to alkaline earth oxide is chosen so that at least 1 mol of alkaline earth is available per mole of acid group. 9. The method according to one or more of the preceding claims, characterized in that the mortar mass is a 109825/1684 Wetting agent is added. 10. The method according to one or more of the preceding claims, characterized in that the Hortel mass an anti-foaming agent is added. 11. The method according to one or more of the preceding claims, characterized in that a synthetic "Anhydrite is used, which is already around by default Contains 1 wt. ^ CaO. 12. The method according to one or more of the preceding Claims, characterized in that channels are arranged on the supporting base into which the mass is poured will. 13 · method according to one or more of claims 1 to 11, characterized in - that in the production of a particularly large floor covering from the mass of Space to be filled above the base in separate casting rooms is divided. "» ORIGINAL INSPECTED 109825/1684 14. The method according to claim 13t, characterized in that for subdivision into separate casting rooms on the base at least partially transparent and / or with Partition walls provided with at least one recess each are arranged, whereupon the individual casting rooms according to the degree of transparency or opening the partition walls given the possibility of comparison with the mass are so far filled that the surfaces of the Ground in the casting rooms in a common horizontal plane. 15 · The method according to claim 13, characterized in that the casting rooms are partitioned off with the help of at least partially transparent cavity walls, which are at least partially connected to one another to form a system of communicating vessels in which a low-viscosity auxiliary liquid, preferably colored water, is filled in, which extends over long distances with the formation of a horizontal Total surface distributed, after which the casting rooms after., Provided that the liquid level is the same in each of the adjacent cavity walls, the Hasse is filled so far that the surfaces of the mass in the casting rooms lie in a common horizontal plane. 109825 / 168A 16. Device for performing the method according to Claim 14 »characterized by a number to one Grid separable walls (13) »which are at least partially transparent and / or at least one Have recess (14). 17. Device for performing the method according to Claim 15 »characterized by a number of cavity walls (2) which can be assembled to form a grid and which at least ψ are transparent partially, and whose cavities in the assembled state at least in part with each other in conjunction s _v tehen. 18. The device according to claim 17, characterized in that the hollow walls are formed from hollow profiles (2), which are cross-shaped, T-shaped or L-shaped, which are also hollow Connecting parts (3 »5» 6) can be assembled to form the grid. 19 «Device according to claim 18, characterized in that that the hollow profiles (1) with the connecting parts (3 »5» 6) can be plugged together to form a seal. 20. The device according to claim 19 »characterized in that the plug connection has at least one sealing ring (8) which is located between the nested parts of the hollow profile (1) and the connecting part (6) 109825/1684 extends transversely to the insertion direction. 21. Device according to one or more of the claims 18 to 20, characterized in that the hollow profile (1) in the connecting part (6) up to one provided in this Stop (7) can be introduced. 22. Device according to one or more of the claims 17 to 21, characterized in that the side walls (15 »16) of the hollow profile (i) and the connecting parts (3> 5 »6) in the state of use seen in the direction of the supporting base run approaching one another. 23 * Device according to claim 22, characterized in that the cross-sectional area of the hollow profile (1) the shape having an isosceles triangle or a symmetrical trapezoid. 24 · Device according to one or more of the claims 18 to 23, characterized in that the hollow profile (1) and / or the connecting parts (3, 5, 6) are designed to be at least partially open at the top. 25 · Device according to one or more of claims 17 to 24 »characterized» that the hollow walls (1) 109825/1684 .- '.' ■ ORiGiNAL INSPECTED 1S43B34 are equipped with handles (11) protruding upwards. 26. Dry mortar for carrying out the method according to claim 1, characterized by a content of an .hydrite, on one of the sedimentation of the pesticides in the Delaying mixing water and increasing the strength of the covering made from the mortar Substance. 27. Dry mortar according to claim 26, characterized in that that the mortar contains a water-soluble cellulose ether as a sedimentation-retarding substance. 28. Dry mortar according to one or both of the preceding claims 26 and 27, characterized in that the Mortar a sulfite- or sulfonic acid-modified resin based on an amino-s-triazine with at least contains two NHg groups as a strength-increasing substance. 29. Dry mortar according to claim 28, characterized in that that the resin is a metal oxide or hydroxide, in particular one of the alkaline earth metals or aluminum, preferably calcium oxad, is added. 30. Dry mortar according to one or more of the preceding 109825/1684 ORIGINAL. INSPECTED Claims 26 to 29, characterized by the content on a sedative 31. Dry mortar according to one or more of the preceding Claims 26 to 30, characterized by the content of a show restraint ORfOiNAt INSPECTED 109825MB8A