DE1951171B - Mortar base mixture - Google Patents

Description

Binders made from iron porlland

a) SOO his! 0 (H) Gewiehisleilen
Portland cement and / or
cement,

b) 20 to 40 parts by weight of anhydrous calcium chloride and / or iron (III) chloride.

e) 25 to 50 parts by weight of saturated fatty acids having 12 to 18 carbon atoms and / or their soaps (aluminum or zinc),

d) 10 to 25 parts by weight of a one-part re-emulsifiable polymer powder from optionally partially saponified polyvinyl acetate and / or vinyl acetal copolymers,

e) 2 to 10 parts by weight of ligninsulphonic acid and / or alkaline earth ligninsulphonate.

2. Miirielgrundsioffmisehung according to claim 1, characterized by a content of:

a) 850 to 950 parts by weight of Portland cement,

b) 25 to 35 armaments of calcium chloride,

c) 30 to 40 weight lines of aluminum and /

or zinc soaps of saturated fatty acids with 12 to 18 carbon atoms,

d) 10 to 25 parts by weight of finely divided poly

vinyl acetate,

e) 5 to 8 parts by weight of calcium lignin

sulfonate.

3. Möriel base material mix according to claim 1 or 2, characterized by an additional content of fungicidal active ingredients, inc! ■ - • special 1.5 to 5 parts by weight of pentachlorophenol and / or its salts.

4. Mortar base mixture according to one of the Claims 1 to 3, characterized in that the polymer powder is a copolymer of vinyl acetate and vinyl esters of long, preferably branched, carboxylic acid.

The Ri mulmig concerns an improved mortar base mix for the production of water-repellent, breathable and highly durable insulating, Laying and grouting mortars.

Mixtures of mortar raw materials are already known in addition to a binding agent consisting of cement and / or lime, additives to the binding regulating halides of polyvalent metals, for example calcium chloride, and hydrophobizing acting metal soap !! higher fatty acids, for example Contains aluminum or zinc stcarate. So is from the German Palentschrift 1 072 175 a Starting material for a waterproof porous plaster from a lime-Zcmcnt-Gcmisch known that at least 2.5% of a mixture of 2 parts of dehydrated calcium chloride and 3 parts of acuninium salt a solid fatty acid. Such mixtures have proven themselves in terms of their water-repellent properties Well proven, but have various uses, especially laying ceramic plates do not have sufficient adhesive strength and plasticity. This is mainly based ensure that the hydrophobizing agents added to achieve water-repellent properties have an unfavorable effect on the adhesive and setting properties. Due to insufficient adhesion it was previously necessary when laying ceramic tiles, the tiles in the direction from below to be laid upwards, which means that the already laid platform surface must be cleaned several times will.

The object of the invention is therefore to provide an improved Mörlelgrundsloffmisehung to create which while avoiding the previous disadvantages at excellent Water repellency and favorable binding properties at the same time a good finish and a special one has high adhesive strength, so that z. B. Krr: imiknlaUcn from oix ,, be moved downwards can, which means that multiple cleaning of the laid There is no space and the scaffolding can be dismantled as the work progresses.

The invention accordingly relates to a mortar mix for the production of water-repellent breathable and skin-proof Insulating. Installation and grouting mortar with one Content of alkaline potassium halides and metallic soap: ·.

higher fatty acids, characterized by cir.ep. Content of:

a) 800 iv, ICOO Gewiehlsteile binders made from Portland cement and or iron Portland cement.

b) 20 to 40 parts by weight of anhydrous calcium chloride and or EiscnlU ^ -chlcnd. c) 25 to 50 parts of saturated fatty acids: ·, with 12 to 18 carbon atoms and, or their Soaps (aluminum or zinc),

d) 10 to 25 parts by weight of a [one-part re-emulsifiable polymer powder made from polyvinyl acetate which has passed, if necessary partially saponified, and / or Viii ;, iacet a i-copolymers,
c) 2 to 10 parts by weight of lignosulfonic acid and / or Erdaikaliligninsulfonat.

According to a preferred embodiment, it contains a mortar base material mixture which is particularly suitable for plastering work
60

As 850 to 950 pieces of Portland cement.

b) 25 to 35 parts by weight calcium chloride.

c) 30 to 40 pieces of aluminum and ocier

Zinc soaps of saturated fatty acids ην ,: r> 5 12 to IS carbon atoms.

ei) 10 to 25 animal parts fine i \> i \> ir, \ i-

acetate,
e) 5 to 8 weight lcileCa ', cii: r, ~ .lu: nir.s;, .., ..,;.

N, I ciiKT uciUTL-n preferred execution form λ.ιιίπ die MmieLTundsionTiibeispiel /usäl/.lit-'h still fungicidal Wnksiollc. especially 1.5. Contain up to 5 weights I ¹ L-II! .tchlurpheiiol and / or its salts.

.! ο According to the requirements, Pohnierptilwr next to or at mile vmi vinyl acetate or partially stranded Yi ;;> laceial also a copolymer puher from Vin> l..cci.it and Vin \ leslern more long, \ or.'ug -. \\ iron branched carboxylic acids are used 'λorden. The amount of added polymer powder can within the scope of the above-mentioned number ranges, taking into account the proportions the remaining components, the structure, the molecular weight and the grain size of the poly- "5 be tuned appropriately. This applies in the same way to the number and quantity of the others Additives.

The components used for heating graze m according to a finely divided form by Spe- / mimischer to a homogeneous mortar base material mixture \ ei mixes and, if necessary, packaged in a manner known per se. On the construction site will the mortar base material mixture in volume ratio of about I: 3 with according to the intended use chosen sauces and mixed with water mixed with fenig mortar. The dosage of the Water depends in the manner known to the person skilled in the art on the / Ut and Ilohlräumigkeit of the sand as well as from the purpose ib.

The mortar base mixture according to the invention is not only suitable for the production of all kinds of insulating, laying and grouting mortars for pre-spraying and leveling insulating mortars. Underfloor construction. Thin belt bending, sparging and fiddling work. With the new Mörielgrundsioffverbindungen a guaranteed watertightness and good temperature resistance due to the particularly high Hafii'estigkeil with favorable compressive strength η'ich 2½ days an increased tensile strength is achieved. The mortar base mixture can be processed on the building component without the addition of any other sealing, barrier or sealing material, which makes it much easier to avoid uneven mortar failure on the building site. When laying ceramic tiles on facades, the structure is protected against driving rain by the layer of mortar. The lath extension can be carried out quickly and, in particular, from top to bottom because of the high wedge. Since the jointing can be carried out with the same mortar in the same work step, this saves wages and increases the security against slipping in the course of time. When it comes to bias, Fassadcnpi. '. Ucn can dv.rcl; the method of laying oil downwards, the time-consuming cleaning of the already completed drums, which was previously required several times when laying from bottom to top: i; ie; ifiächLT. avoided and the framework dismantled with the progress of vericgcarbciien. This laying \ on top to bottom iial dcv. another advantage that the deposition and Abhindezcitpiii'ikte of "iunmehr aucii the bedding mortar in approximately the same zeitiiehem distance are also bisljcr from above to below, applied pre Pritzes and Ausgieichspntzes and ¹ ^, whereas so far the zeitUcIk ¹ difference between the preparation and the Laying work in the lower part of the facade could last for up to 2 days, in the upper part, on the other hand, for up to 4 weeks.

When erecting water tanks and swimming pools, if properly executed the substructure by using the Mörielgriindsioffmisehuiig e; n optimal degree of security against pressure and their consequential damage, since water is under a pressure of several water columns does not penetrate the mortar. On the other hand, the discharge of the setting processes released moisture in no way hindered.

In the following, the invention is further explained using an exemplary embodiment:

example

For the production of a mortar base material 1000 kg of Portland cement Z 275, 2½ kg of finely powdered, anhydrous calcium chloride were used. -40 kg! One-piece technical zinc stearai with a melting point between 120 and 125 '"C, a water content of less than 0.5%, an ash content of 14 to 14.5% and a bulk weight of 120 to 110g-1. 10 kg one-part, redispersible polyvinyl acetate powder and 8 kg of a product still containing calcium selenium of higher fatty acids with a content of about 80% calcium lignin sulfonate in special mixers mixed homogeneously.

To determine the spatial stability, the bending / - Tensile strength wedge, compressive strength, water impermeability and shear strength became a test mortar manufactured. For this purpose, the e; haher.c mixture with three times the volume of a washed one Rhine sand mixed with a grain size between 0 and 3 mm. The grain fraction 'between 0 and i> .2 mm was achieved by adding quartz powder added.

The sieve curve of the material used corresponded to the following. Numerical values:

0 to 0.2 mm 0 i p.7%

0 liis 0.6 mm > / y 75.2%

0 to OK mm 0 8K.2%

(J to 2.0 ram 7j 95.9%

0 to 2.0 mm 0 iü0.0%

As shown in the preceding numerical values, v.i.rde aiv.iLiüiich an unfavorable grain structure for a mortar chosen. Then ;; iit Wa - ,. "-. Er a keiiengerechler Mörtci lierge. divided. The Ar.nu.LY, water content was 14.75%. based on the C-c> ...: - i, -mixture. The slump was 14 cm. Wed; t.e.r. Tesl; .iörlei. were prisms tier AbiviesSiir.g 4>: - '. - <'i -.'! c: ti manufactured, the 24 hours /,.ic',1 .r.re. " Production demoulded and partly 28 days ur / .er Water were stored at 20 C. Two samples! I.s'.Un were 24 hours after the making of 2 booths cooked. In both tests it turned out to be 'animal mortar than whistle-free.

To test the flexural tensile strength, prisms of the dimensions mentioned made from the same test mortar with manual compaction were each half cut until the test in a Kliir.arai.m at 20 ° C. and a relative humidity of .5% and the other half Water stored. The sample prisms obtained were

speaking storage ^ -durably on their bending / inifcsiigkeil investigated and the resulting fragments: / ur iumulation of the compressive strength hot /. Hh 'results of this test are in the following Table 1 compiled.

Table I.

Priif.ilier
7th

!., igcriing

20/85

water

28

20/85

28

water

fcMigkcil
kp cm *

27.5
29.8
28.7

28.7

28.4
26.1
28.1

27.5
44
51
52

49
4S
45
47

47

i) ruckfesligkeil kp cm *

ι OO 92 96 94 92 102

98 96

\ 02 104

92 107

100

156 152 156 152 160! 52

154

204 216 216 220 208 220

214

To test the adhesive strength of the mortar on rough concrete, concrete prisms 4x4x16 cm produced from the test mortar in rough formwork were moistened without pre-spraying, and two prisms were each set in the longitudinal axis by 1 cm with the Tcstmörlc! glued together. The specimens so obtained were stored nci 2O ⁰ C and a relative humidity of 65%. The shear strength was determined after a hardening time of 28 days. The numerical values obtained are compiled in Table II below.

Table II

j Adhesion '!
kp.cm- I

Remarks

Without pre-molding

3.92
4.21
5.10

4.41

Break at the bone adhesion surface c

With pre-injection

6.90 Brucli partly in 7.92 Pre-shot, part 7.72 instruct ('he . Beionadhäsiuns- 7.51 l area

For comparison tests carried out for control purposes With a normal cement mortar, considerably lower bond strengths were measured. To check the Wassemndtirchlässigkeii were from a normal cement-mortar base material mixture with four times the volume of Rhine sand (Kürnurm 0 to 7 now) porous test specimen in the dimensions 20 χ 2t) x 12 cm. The compression of the sample! .Body was carried out in such a way that that throughout the Quei. ^ iiniii a porous, strong a water-permeable body emerged, el "τ 24 hours after its production turn on '7 days under water' and then at 18 ± 2'C and a relative Humidity of 60 χ 5% was stored. After sufficient hardening the test specimen was A 1.5 cm thick layer of Tesi mortar was applied to an area of 20 x 20 cm and the surface was rubbed off and smoothed. The test specimens obtained were in a climatic room at 20 "C and a relative humidity of 85% stored for 28 days and then the water impermeability wedge test according to Subject to DIN 1048. The results obtained are summarized in Table III below.

³ S 'Table III

Bd.istungszcit! Water pressure I

Remarks

5 hours
3 hours
3 hours
3 hours
12 hours

0.2 atm
0.3 atm
0.4 atm
0.5 atm
0.7 atm

no moisture penetration no moisture penetration no moisture penetration no fluoroscopy lateral water flow

urge above the

Insulating mortar

To test the shear strength, prismatic test specimens of the type described above were stored for 28 days in a climatic room at 20 ° C. and a relative humidity of 65% after encasing. The shear strength test carried out subsequently showed an average shear strength of 27.1 kp.cm ² . The figures given above show that the basic mortar mixture according to the invention had a Viöriei ergiiM which, with excellent flexural tensile strength and compressive strength, was impermeable to water under pressure and at the same time possessed excellent adhesive strength.

Claims (1)

Patent claims: I. Mörielgrundstoffmisehungen for the delivery of water-repellent breathable and highly halilest Isolating, laying and grouting mortars with a content of alkaline earth sulphides and Metal parts of higher fatty acids, marked through a content of: