MASONRY MORTAR FOR BLOCKS AND TILES MADE OF CELLULAR CONCRETE

FOR INTERNAL AND EXTERNAL USE

USE

ATLAS KB-15 is a masonry mortar for making walls of blocks, bricks and other elements made of cellular concrete and aerated concrete. It is also designed for other masonry work such as walls made of bricks, hollow bricks and other similar ceramic, concrete or lime-sand materials. The mortar enables to join elements with thin joints with thickness of 2 mm. Maximum thickness of the joint should not exceed 10 mm. It can be also used for surface levelling and floating (layer thickness: 2÷5 mm). It is suitable for indoor and outdoor use. Use in reduced temperatures So-called antifreeze agents that enable work in reduced temperatures i.e. below +5°C can be added to the mortar. The new temperature range of mortar utilisation, method of preparation (in particular adjustment of the amount of added water), principles of conducted work and setting conditions have to be assumed in accordance with instructions of manufacturer of additive. The amount of antifreeze agent added depends on the cement content in the mortar – the ratio of cement to fillers in ATLAS KB-15 is 1:2. Note: Mortar manufacturer is not responsible for effects and quality of applied antifreeze additives.

PROPERTIES

ATLAS KB-15 is a ready-to-use dry mix of cement binder, aggregates and modifying agents. It is convenient to use and plastic, and enables to use blocks, bricks and similar elements quickly. It has excellent adhesion to various construction substrates, in particular cellular and aerated concrete. Possibility of thin joint application prevents thermal bridges between joined elements and ensures uniform thermal insulation parameters of the partition wall. ATLAS KB-15 is frost- and water-resistant.

SUBSTRATE PREPARATION

Remove dust and broken pieces from surface of joined elements. To obtain a thin joint with even mortar thickness in the whole layer, it is recommended to grind and de-dust surface of previously adhered blocks. For levelling or floating, the substrate should be dry, stable, even and structurally sound i.e. strong enough; it should be free from anything that may weaken mortar adhesion, in particular dust, dirt, lime, oil, grease, wax, remains of emulsion and oil paint. If necessary, use ATLAS UNI-GRUNT PRIMING EMULSION to reduce substrate’s excessive absorptivity.

MORTAR PREPARATION

In order to prepare the mortar, pour dry mortar into a container with suitable amount of water (in proportion: 5.25÷6.00 l water for 25 kg of dry mortar) and mix until homogenous. It is best to mix it mechanically, using a drill with a mixer. The mortar is ready to use after 5 minutes and after remixing. It maintains its properties for ca. 4 hours.

APPLICATION

Conduct work in accordance with wall bricklaying technology using cellular concrete blocks. To arrange and level the first layer, use ATLAS MASONRY MORTAR. Apply ATLAS KB-15 with a notched float evenly on a horizontal plane of the previously prepared layer. Apply the mortar also on vertical block contact planes unless the method provides for otherwise. Press down every successive element and strike it with a rubber hammer to obtain required position. Do not lay the mortar over excessively large area, because it maintains its adhesive properties for 10÷30 minutes (depending on the substrate and ambient conditions). In order to check if it is still possible to fix blocks, you should make a test i.e. press the mortar with your fingers. If the mortar has remained on the fingers, you may fix another element. If the fingers are clean, remove the old layer of the mortar and apply a new one. The information comprises basic instructions of product application and do not relieve users of responsibility for work in accordance with good construction practice and OHS regulations.

CONSUMPTION

Thickness of homogenous wall 3 mm thick mortar layer 25 kg bag 12 cm ca. 4 kg/m² ca. 6.2 m² 18 cm ca. 6 kg/m² ca. 4.2 m² 24 cm ca. 8 kg/m² ca. 3.1 m² 30 cm ca. 10 kg/m² ca. 2.5 m² 36 cm ca. 12 kg/m² ca. 2.1 m²

TOOLS

Drill with a mixer, notched trowel (notch size 4÷5 mm), trowel, spatula. Wash the tools with clean water directly after use. Clean the remainder of the set mortar that is difficult to remove with ATLAS SZOP.

PACKAGING

Paper bags: 25 kg Pallet: 1050 kg in 25 kg bags

STORAGE & TRANSPORT

Store and transport in tightly closed bags, in dry conditions (pallets are particularly recommended). Keep dry. Shelf life in conditions complying with the requirements is 12 months from the date on the packaging.

CAUTION

Irritant. Protect skin, eyes and respiratory tract. Keep away from the reach of children. Do not inhale dust. In case of contact with eyes, immediately rinse with plenty of water and seek medical attention. In case of ingestion, immediately seek medical attention and show the packaging or label.

TECHNICAL DATA

Mixing proportions 0.21÷0.24 l of water for 1 kg of mortar 5.25÷6.00 l of water for 25 kg of mortar Pot life – ca. - 4 hour Temperature mortar preparation temperature – from +5°C to +30°C Substrate and ambient temperature during work – from +5°C to +30°C Resistance to temperature during work - up to +60°C Min. thickness of mortar layer - 2 mm Max. thickness of mortar layer - 10 mm Content of soluble chromium (VI) in ready-to-use mix - ≤ 0.0002% PN-EN 998-2:2004 Masonry mortar according to project, for thin joints (T), suitable for indoor and outdoor use, in elements subject to construction requirements, intended for reinforced and non-reinforced elements. Compressive strength – M5 category - (≥5 N/mm2) Initial shear strength (tabular value) - ≥0.30 N/mm2 Chloride content - 0.07% Cl Reaction to fire - A1 class Water absorption 0.05 kg/m2 min0.5 Water vapour permeability (tabular value) - µ 15/35 Thermal conductivity (tabular value)- 0.83 W/mK (λ10, dry) Adjustment time - ≥ 10 minutes Aggregate fraction - ≤ 1.6 mm Durability: category of compressive strength after freeze-thaw cycles - M 5 (≥N/mm2) Durability: mass decrement after freeze-thaw cycles - ≤ 3%

CERTIFICATES

The product conforms with PN-EN 998-2: 2004 and has been given Certificate of Conformity no. 1488-CPD-0013 by the Building Research Institute and Hygiene Certificate no. B-290/95 by the National Institute of Hygiene.