The Retamor system consists of 2 additives, one aerating and one retarding, which are added separately together with part of the mixing water of the mortar.

• Retamor 11, 12, 13 and 14 are water-soluble aerating solutions based on a blend of synthetic surfactants.
• Retamor 21, 23, 24, 25 and 26 are liquid retarding admixtures based on hydroxyl polymer blends. 
• Retamor 11 and 21: System designed for most of the sands used in the preparation of stabilised mortar.
• Retamor 12 and 21: System designed for sand mortars with low fines content.
• Retamor 13 and 23 or 24: System designed especially for mortars with monogranular sand or with important jumps in the distribution of its grain size.
• Retamor 14 and 25 or 26: System designed for mortars with very different types of sand.

Retamor 11

Aerating agent for mortar. Sands with high fines content. Use with Retamor 21 or Retamor 25 retarders.

Consumption of 0,3 - 0,7% s.p.c. (on weight of cement)

Retamor 13

Aerating agent for mortar. Monogranular sand or sand with large grain sizes. Use with Retamor 26 retarder.

0,3 - 0,7% s.p.c. (on weight of cement)

Retamor 14

Aerating additive for mortar. Various types of sand. Use with Retamor 23, Retamor 24, Retamor 25 or Retamor 26 retarder.

0.3 - 0.7% s.p.c. (on weight of cement). (on weight of cement)

Retamor 21

Standard retarder for mortar. 24-48 hours workability. Use with Retamor 11 aerating agents.

0,3 - 1,6% s.p.c. (on weight of cement)

Retamor 23

Retarder for mortar. 24-48 hours workability. Use with Retamor 14 aerating agent.

0,3 - 1,6% s.p.c. (on weight of cement)

Retamor 24

Retarder for mortar. 24-48 hours workability. Use with Retamor 14 aerating agent.

0,3 - 1,6% s.p.c. (on weight of cement)

Retamor 25

Retarder for mortar. 48-72 hours workability. Use with Retamor 11 or Retamor 14 aerating agent.

0,3 - 1,6% s.p.c. (on weight of cement)

Retamor 26

Retarder for mortar. 48-72 hours workability. Use with Retamor 13 or Retamor 14 aerating agents.

Uses

Manufacture of retarded ready-mixed mortar with a workability period of up to 48 hours.

Advantages

• The mortar obtained with Retamor System admixtures offers a higher workability mainly due to the micro air bubbles occluded by the aerating admixture.
• The tendency of the mortar to segregate or bleed is reduced.
• The amount of mixing water is reduced, reducing permeability and improving the durability of the mortar.
• The Retamor range of additives (four aerating additives Retamor 11, 12, 13 and 14) and five retarders (Retamor 21, 23, 24, 25 and 26) allows mortars to be made with very different types of sand and cements.

Standards

Retamor 11, 12, 13 and 14 comply with the UNE-EN 934-3:2010 standard as air/plasticiser embedding agents.

Retamor 21, 23, 24, 25 and 26 comply with UNE-EN 934-3:2010 as setting retarders.

Usual dosage

The dosage of Retamor 11, 12, 13 and 14 aerators varies to obtain ideal characteristics in a mortar, usually varying between 0.30 and 0.7 litres per 100 kg of cement.

The optimum dosage of Retamor 21, 23, 24, 25 and 26 stabilisers is between 0.3 and 1.6 litres per 100 kg of cement.

When using ash or microsilica in the mix, the additive dosage should take into account the total cementitious material. Pre-testing will allow the ideal dosages to be determined in each case.

Properties

Instructions for use

Workability

The initial workability of a retarded mortar is an important factor in achieving the desired workability retention characteristics.

Storage of mixed mortar

Once manufactured, the mixed mortar should be protected from moisture loss. It is recommended to store in non-porous containers with an adjustable closing lid. If evaporation occurs, the mortar may form a crust.

Compatibility

Retamor admixtures are compatible with other Fosroc Euco admixtures used in the same mortar mix. If more than one additive is used, they should be added to the mixture separately and not mixed together before being added. The resulting properties of the mixture containing more than one additive should be checked by prior testing. Retamor admixtures are suitable for use with all cements complying with RC-08.

Dosing system

The correct amount of aerator and retarder should be measured by means of a dosing system recommended for each use. Add the additive to the mixing water for best results.

Effects of overdosage

Overdosing by twice the added quantity of Retamor 11, 12 13 and 14 may result in a significant increase of air in the mortar, which will increase its workability and reduce its strength.

Overdosing by twice the amount of Retamor 21, 23, 24, 25 and 26 may result in a significant increase in retardation relative to that normally obtained at the intended dosage. Overdosage will also tend to increase the plasticising effect of the additive. The degree to which the mortar may be affected will depend on the particular mix design and the level of overdosage.

Curing

As with all cementitious systems, adequate curing should be sought and is particularly important when using the mortar for plastering.

Clean up and disposal

Spillage of Retamor admixtures should be absorbed with sand or earth and transferred to suitable containers. Product residues should be flushed away with a large quantity of water. Disposal of the product and packaging is the responsibility of the end user.

Storage

Retamor additives have a storage period of 12 months if kept in dry conditions in their original, sealed containers at a temperature between 2ºC and 40ºC. The recommended storage period for bulk storage is 6 months, although the product may be stored for longer depending on storage conditions. In case of doubt, please contact the Fosroc Euco Technical Department.

Precautions

Safety and hygiene

Retamor has a low level of toxicity. Avoid contact with skin and eyes, or inhalation of the dust. Wear suitable protective clothing, gloves, eye/face protection and mask.

If skin contact has occurred, wash with plenty of clean water. In case of contact with eyes, rinse immediately with plenty of clean water and seek medical attention. In case of accidental ingestion, seek immediate medical attention. Do not induce vomiting.

For further information, please refer to the Material Safety Data Sheet.

Fire 

Retamor aerators and retarders are water based and non-flammable.