AT2019U1 - Dry mortar for jointing tiles or natural stone slabs - Google Patents

Dry mortar for jointing tiles or natural stone slabs Download PDF

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Publication number
AT2019U1
AT2019U1 AT61997U AT61997U AT2019U1 AT 2019 U1 AT2019 U1 AT 2019U1 AT 61997 U AT61997 U AT 61997U AT 61997 U AT61997 U AT 61997U AT 2019 U1 AT2019 U1 AT 2019U1
Authority
AT
Austria
Prior art keywords
weight
dry mortar
optionally
natural stone
stone slabs
Prior art date
Application number
AT61997U
Other languages
German (de)
Original Assignee
Knauf Bauprodukte Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE29701606U priority Critical patent/DE29701606U1/en
Application filed by Knauf Bauprodukte Gmbh filed Critical Knauf Bauprodukte Gmbh
Publication of AT2019U1 publication Critical patent/AT2019U1/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • C04B28/02Compositions 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 hydraulic cements other than calcium sulfates
    • C04B28/04Portland cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2111/00Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00474Uses not provided for elsewhere in C04B2111/00
    • C04B2111/00663Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
    • C04B2111/00672Pointing or jointing materials

Abstract

The dry mortar for grouting tiles or natural stone slabs consists of 12 to 25% by weight of Portland cement, 58 to 83% by weight of mineral aggregates, 1 to 5% by weight of calcium sulfate and / or its hydrates and / or 1 to 5% by weight. % Calcium aluminate monosulfate, 2 to 5% by weight pozzolan, trass flour, metakaolin, active silica or mixtures thereof, 1 to 5% by weight alumina cement or 0.2 to 0.8% by weight alumina hydrate sulfate, 0.3 to 0, 8% by weight of plasticizer, optionally up to 0.5% by weight of polycarboxylic acid, optionally up to 0.5% by weight of hydrophobizing agent and optionally up to 1% by weight of adjusting agent.

Description

AT 002 019 Ul
The subject of the innovation is a dry mortar available for tiles or natural stone slabs containing Portland cement, mineral aggregates and other additives.
The usual method available for ceramic or natural stone slab floor coverings is the slurrying of a grout with the help of a rubber pusher, a so-called joint rubber or sponge board into the joint network. After the mortar in the joint has stiffened to a certain extent, the surface is cleaned by repeated washing with a sponge, sponge board and water or by sprinkling with dry grout or sawdust.
Both construction site mixed material and industrially manufactured dry mortar are used as grout. The binder is usually a standard cement with a relatively long open time or a slow increase in strength according to DIN 1164-1 for the cement types CEM I, II, III. The start of solidification is at least one hour, the end of solidification at most 12 hours, whereby the mortars mixed from it usually have significantly longer solidification times. High water / cement or water / solids values also delay solidification, although they are widely used to obtain a thinner, easier to grout mortar. This in turn delays and complicates the subsequent cleaning work. Furthermore, the strength is significantly reduced by an increased water / cement ratio. 2 AT 002 019 Ul
The process of grouting with such a mortar is therefore lengthy. Especially in the case of wide joints, and if these are irregularly shaped, the previously usual method inevitably leads to the formation of fillets by washing out the joint mortar. In the case of porous, porous or blow-like coverings such as travertine, a more or less stable slurrying of the fine mortar components into the covering structure with corresponding changes in appearance is practically unavoidable. For correspondingly wide joints, a plastically stiff mortar is therefore occasionally used, which is introduced into the joints with a joint iron or a trowel. This is a very tedious and time-consuming way of working, especially with irregularly wide joints such as those with coverings made from irregularly shaped polygonal natural stone slabs.
In the case of normal joint mortars in particular, larger joint widths result in flank tearing due to shrinkage, with the resulting disadvantageous consequences. This is exacerbated if too much water has been mixed.
In addition to the industrially manufactured standard joint mortars, quick joint mortars are also offered as a special product, which can be applied to wide joints using conventional processing technology. To fill the joints of irregular natural stone coverings, the conventional grout is poured into the joints as flush as possible, usually using a special device that is connected to a hand drill. The mortar is moved in the storage container by moving a kind of spiral to make it easier to pour out.
The innovation has set itself the task of providing a dry mortar available for tiles or natural stone slabs, which does not have the disadvantages mentioned above. This dry mortar should be able to be mixed with relatively little water to form a 3 AT 002 019 Ul pourable slurry, which solidifies within 20 to 60 minutes without then shrinking significantly. It should still be workable in the solidified state, but in the final set state it should be very firm and resistant. In particular, it should not be washable by water, should not tear off on the flanks and be easy and quick to process.
This object is achieved in that the dry mortar available for tiles or natural stone slabs containing Portland cement, mineral aggregates and other additives has the following composition: 12 to 25% by weight 58 to 83% by weight 1 to 5% by weight 1 to 5% by weight 2 to 5% by weight 1 to 5% by weight 0.2 to 0.8% by weight 0.3 to 0.8% by weight optionally until optionally until optionally until
Portland cement, mineral aggregates,
Calcium sulfate and / or its hydrates and / or
Calcium aluminate monosulfate,
Pozzolana, rice flour, metakaolin, active silica or mixtures thereof, alumina cement or alumina hydrate sulfate,
Liquefier, 0.5% by weight polycarboxylic acids, 0.5% by weight hydrophobicizing agent and 1% by weight adjusting agent.
The mineral aggregates preferably have grain sizes of up to 2 mm and consist of limestone, quartz sand or mixtures thereof.
The calcium sulfate used preferably has slowly setting properties, so that it is able to provide calcium and sulfate ions as uniformly as possible during the setting process, which can react with the other components to form ettringite. In the same way, more or less pure calcium aluminum monosulfate with the formula 3CaO 4 AT 002 019 Ul x 3 Al203 x CaS04 can be added, which, together with the other components, is also suitable for forming early ettringite.
The binder, which mainly consists of Portland cement, contains alumina cement or alumina hydrate sulfate as a setting accelerator. Puzzolan, rice flour, metakaolin, active silica or mixtures thereof are able to bind excess lime with a certain delay and thus ensure long-term stability. So-called " silica fume " suitable. The usual plasticizers, such as naphthalene sulfonate-formaldehyde condensates or sulfonated melamine-formaldehyde condensate, are particularly suitable as liquefiers.
A conventional cement retarder, such as polycarboxylic acids, can optionally be added to set the desired setting time. It is preferably citric acid or tartaric acid. The amount is made dependent on the desired setting time.
For outdoor use in particular, it is advisable to add waterproofing agents such as stearates or silicones to the dry mortar. If silicone powder is not used, silicone oils can also be added to the dry mortar together with one of the solid components. Finally, if desired, customary setting agents such as cellulose or starch ether can be added to the mortar, which influence the consistency and the flow behavior.
With the help of the new dry mortar, it is possible to mix pourable mortars with relatively little water, namely a water solids ratio of 1:14 to 1:20, which solidify within 20 to 60 minutes without then shrinking significantly. This porridge can be mixed in a watering can, a mug or in a bucket with a spout, for example, and then poured. Even a tin can with a pressed-in snout is well suited for this 5 AT 002 019 Ul. The joint is preferably filled in at a slight height. After the selected setting time of approx. 20 to 60 minutes, the remaining mortar is flushed off with a trowel or smooth disc. After a certain further hardening for better stabilization, the surface is then cleaned by washing with a sponge board. It is therefore possible to produce an almost flat and clean document area with very little work. Neither fillets nor tearing of the flanks are created. The hydrophobization, especially when used outdoors, avoids the otherwise observed washing out. It also reduces the tendency towards algae growth in permanently damp joints and the formation of efflorescence when there is a build-up of moisture from the floor covering.
A preferred embodiment of the dry mortar has the following composition
Portland cement CEM I 42.5 R 16% alumina cement Secar® 71 3% CaS04 1.5% ground flour 4 0, " o melamine condensate Melment® 0.65% limestone grain 0 to 0.5 mm 10% quartz sand 0 to 2 mm 64.65% citric acid 0.02% stearate 0.2%
Mixing with the water / solids ratio 0.16 gives a slurry with good pourability, which solidifies after about 40 minutes and can be easily processed as described above. 6

Claims (4)

  1. AT 002 019 Ul
    1. dry mortar available for tiles or natural stone slabs containing Portland cement, mineral aggregates and other additives, characterized in that it consists of 12 to 25 wt .-% 58 to 83 wt .-% 1 to 5 wt .-% 1 to 5 wt .-% 2 to 5 wt .-% 1 to 5 wt .-% Portland cement, mineral aggregates, calcium sulfate and / or its hydrates and / or calcium aluminate monosulfate, puzzolan, meal, metakaolin, active silica or mixtures thereof, alumina cement or 0.2 up to 0.8% by weight of alumina hydrate sulfate, 0.3 to 0.8% by weight of plasticizer, optionally up to 0.5% by weight of polycarboxylic acid, optionally up to 0.5% by weight of hydrophobizing agent and optionally up to 1% by weight of adjusting agent.
  2. 2. Dry mortar according to claim 1, characterized in that the mineral aggregates have grain sizes up to 2 mm and consist of limestone, quartz sand or mixtures thereof.
  3. 3. Dry mortar according to claim 1 or 2, characterized in that the calcium sulfate has slowly setting properties. 7 AT 002 019 Ul
  4. 4. Dry mortar according to one of claims 1 to 3, characterized in that it can be mixed with relatively little water to form a pourable slurry which solidifies within 20 to 60 minutes without then shrinking significantly. 8th
AT61997U 1997-01-31 1997-10-06 Dry mortar for jointing tiles or natural stone slabs AT2019U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29701606U DE29701606U1 (en) 1997-01-31 1997-01-31 Dry mortar for grouting tiles or natural stone slabs

Publications (1)

Publication Number Publication Date
AT2019U1 true AT2019U1 (en) 1998-03-25

Family

ID=8035284

Family Applications (1)

Application Number Title Priority Date Filing Date
AT61997U AT2019U1 (en) 1997-01-31 1997-10-06 Dry mortar for jointing tiles or natural stone slabs

Country Status (2)

Country Link
AT (1) AT2019U1 (en)
DE (1) DE29701606U1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006099742A1 (en) * 2005-03-24 2006-09-28 Jacques Bertrand Dry grout composition and capsule for anchoring reinforcing member, dowel or anchor elements
DE202006016797U1 (en) * 2006-11-03 2006-12-28 Pci Augsburg Gmbh Dry mortar contains dust-reducing additive, e.g. alcohol, polyethylene glycol, polyvinyl alcohol, ether, organic acid, alkanolamine, ester, ketone, silicone oil, polysiloxane-polyether copolymer, silicic acid, animal or vegetable oil or wax
CN103958434A (en) * 2011-12-29 2014-07-30 陶氏环球技术有限公司 Low efflorescence tile grout composition
FR3073220A1 (en) * 2017-11-07 2019-05-10 Holding Hjb Tech PROCESS FOR THE PREPARATION OF AN ETTRING BINDER FOR THE MANUFACTURE OF CONSTRUCTION MATERIALS

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215777A1 (en) * 1982-04-28 1983-11-03 Alex Dr Gregor Fluid cement mortar
EP0579063A1 (en) * 1992-07-17 1994-01-19 Heidelberger Zement AG Rapid-setting hydraulic binder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3215777A1 (en) * 1982-04-28 1983-11-03 Alex Dr Gregor Fluid cement mortar
EP0579063A1 (en) * 1992-07-17 1994-01-19 Heidelberger Zement AG Rapid-setting hydraulic binder

Also Published As

Publication number Publication date
DE29701606U1 (en) 1997-03-20

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