Product description

STEIN TEC® Jointing Mortar HD 02 S – 1K is a hydraulically fast-binding work dry mortar with application-specific mineral and organic additives. It is suited for surfaces used with up to heaviest loads and for special design. Its higher setting and hardening time rate enables earlier initial use of the surface and enhances the suitability for processing at cold weather from 5° C on – if night frost is not to be expected. Of course, it is frost and de-icing agent resistant. Due to its specific compound, STEIN TEC® Jointing Mortar HD 02 S – 1K is characterised by high flowability at coincident very good demixing stability and by high self-deaeration ability. Therefore, it is self-compacting and it is not necessary to compact it by machines. In association with its fast defined setting behaviour, the mentioned properties effect excellent processability and simplest cleansing of grouted surfaces.

STEIN TEC® Jointing Mortar HD 02 S – 1K meets resp. surpasses in its properties the requirements according to the FSGV-Arbeitspapier Nr. 618/2 (working paper for surface pavements with pavings and slabs using bonded construction). STEIN TEC® Jointing Mortar HD 02 S – 1K is with its properties optimally adapted to STEIN TEC® Bedding Mortar BM 04 resp. STEIN TEC® Bedding Mortar BM 04 S and it is suited for jointing of all paved and slabbed surfaces made of natural stone, concrete blocks and clinker bricks. Absolute precondition is a bonded bedding with sufficient adhesive bond to the surface element.

STEIN TEC® Jointing Mortar HD 02 S – 1K is available as bag ware (40 kg) in three standard colours: light grey, medium grey and dark grey.

On demand, further technically feasible colours can be delivered (2,4 t minimum purchase).


  • accelerated setting/ hardening
  • early loadable
  • high compressive strength
  • high adhesive tensile strength
  • high water-permeability
  • frost and de-icing agent resistant
  • low-shrinkage and low-stress
  • polymer modified
  • very good processability
  • self compacting
  • easy cleansing of surface after grouting
  • pumpable

Important information

The bedding must be made of drainable mortar and meet the requirements of strength class C 25/30, at least. Considerably more suitable is water-permeable STEIN TEC® Bedding Mortar BM 04 because of its adapted shrinking and deforming behaviour, resp. STEIN TEC® Bedding Mortar BM 04 S if early loading is desired. If concrete blocks, slabs and, in general, elements with smooth and even (e.g sawn) underneaths are used, STEIN TEC® Bond Adhesive Haftfix should be applied additionally. Paving blocks and slabs must be clean, i.e. free from dust, grease, oil, adhesions and impurities (e.g. cutting or grinding slurry).

The joint space remaining after the setting of the elements must be completely filled up with STEIN TEC® Jointing Mortar HD 02 S – 1K in one process. For mosaic sett pavings, the joint depth must be 3 cm at least. The non-compressed bedding material risen in the joints by the setting of the elements, must be bound force-fit with the jointing mortar. Pre-filling of the joints with mortar or other joint fillings are not permissible.

During the grouting, the day/processing stage of the laying shall be overlapped with the day/processing stage of the jointing in at least 1,0 m, rather 1,5 m distance.

For the laying and grouting of paving blocks and slabs in bonded construction method, respective regulations and generally accepted codes of practice do apply, like DIN 18318, ZTV Pflaster-StB (about pavings) and the bulletin M FP as far as applicable to bonded construction method and to the FSGV-Arbeitspapier Nr. 618/2 (working paper for surface pavements with pavings and slabs using bonded construction). Especially important is a sufficiently stable superstructure suited to the expected loads.For traffic areas where heavy traffic is expected, the requirements in terms of design and sustainability should be set for the panel 3 (Construction Classification III according RStO 01) or Load Classification 3.2 according RStO 12.


The grouting should take place – depending on the weather – one day after, at the latest 48 hours after the laying. If the grouting is possible only at a later date, please contact our technology department to come to an agreement.

The processing is normally done using the silting method. The surface to be silted shall be well pre-moistened (no stagnant water in the joints). Mix STEIN TEC® Jointing Mortar HD 02 S – 1K in the positive mixer or by stirring device with clear cold water only (added amount see Technical Bulletin or imprint on bag) in flowable texture and free from lumps. Immediately afterwards bring the jointing mortar into the joints using a rubber slider slowly and accurately. Keep the silted surface constantly wet by a soft jet of water until the cleansing. After sufficient thickening of the jointing mortar, clean the surface by a soft water jet or a belt cleaning machine.

The grouted surface must be after-treated. For further information see Technical bulletin STEIN TEC® Jointing Mortar HD 02 S – 1K.


Mixing of the jointing mortar using the mixing bucket for wheel loaders.

Filling ability

Noteworthy is the excellent filling ability of STEIN TEC® Jointing Mortar, which ensures complete filling of the joint space at coincident easiest processability.

Wet keeping

Wet-keeping of the recently silted surface until the cleansing.


Cleansing of a silted gutter channel with a soft water jet.


Cleansing of large block pavings using a belt cleansing machine.


Cleansing of granite slabs using a belt cleansing machine.

Granite slabs

Surface of granite slabs after cleansing with the belt cleansing machine.

Paved surface

Paved surface after cleansing with cleaning lance.

Initial use

The enabling of the paved or slabbed area to loads is based upon the stage of the strength development of the bedding and the jointing mortar.

This primarily depends on the conditions of temperature during the processing and hardening of both mortars and can not be generally forecasted, therefore.

All time data listed below concern to a temperature of 20° C and apply – because of the relevant required strength level of the bedding mortar - only in combination with STEIN TEC® Bedding Mortar BM 04 S and if applicable STEIN TEC® Bond Adhesive “Haftfix”. The surface is walkable one day after the grouting. Light traffic (passenger cars) is possible after 3 days, at the earliest. Full loading can only take place after completed hardening (14 days as a general rule).

Please refer to the particular table “Technical specifications” for strength development at a constant surrounding temperature of 20° C.

If early loading is required we recommend the combination with STEIN TEC® Bedding Mortar BM 04 S or the combination of STEIN TEC® Bedding Mortar BM 04 S with STEIN TEC® Jointing Mortar SF 02 – 1K.

Technical specification

JOINTING MORTAR HD 02 S - 1K Patent Nr. DE 198 37 326 B4
Binding agent base hydraulically binding specialty cements
Colours light grey, medium grey, dark grey (on demand, from 2,4 t on in further technically feasible colours)
Minimum processing temperature 5° C, night-frost free
Processing time Silting up to approx. 30 min at 20° C
Cleansing after approx. 1 hour at 20° C. Silted surface must be kept constantly wet until the cleansing
Requirements approx. 1,6 kg dry mortar / litre joint space
Joint width at least 5 mm (according to FGSV working paper Nr. 618/2 at least 6 mm)
Joint depth** absolute joint depth remaining after laying mosaic set pavement at least 3 cm
pre-filling of joint is not permissible
Compressive strength after 1 day (20° C) * > 25 N/mm t;sup>2
Compressive strength after 7 days (20° C) * > 45 N/mm2
Compressive strength after 14 days (20° C) * > 50 N/mm2
Compressive strength after 28 days (20° C) * > 55 N/mm2
Adhesive tensile strength1) > 3,0 N/mm2
Gross density of hardened mortar 2.000 kg/m3
E-module < 23.500 N/mm2
Water permeability yes
Frost resistance proven
Eduction of sound run-time after CDF-test < 1,5%
Weathering after CDF-test < 50 g/m2
All values determined on the basis of lab-body blocks in build-in density at 20° C at the specified testing age resp. after 28 days.
1) Determination of adhesive tensile strength on slab base-body according to DAfStb-guideline “Schutz und Instandsetzung von Betonbauteilen, Teil 4 (= Protection and reinstatement work of concrete elements, part 4) with “Haftfix”.
Subject to technical modifications.
Important information
Suitability for storage approx. 6 months in the silo and as bag ware in dry cool rooms.
* The decrease of temperature down to 10° C doubles the needed time for hardening. At the decrease down to 5° C it will be quadrupled.
** See also General Information about bonded construction method.

You can download the Technical bulletin here.