Concrete structural repair mortar
Product variations:
ARGOTEC REPARACIÓN R4 is a thixotropic polymer modified mortar (PCC), single-component, high-strength and non-shrink, for structural repair of concrete elements, formulated with a mixture of hydraulic binders, selected aggregates, polymers, corrosion inhibitors and fibres that provide excellent adhesion and mechanical properties.

Installation video


Descriptive Memory

The repair of concrete elements will be carried out with ARGOTEC REPARACIÓN R4 mortar, from the Argos cement derivatives company, class R2 according to the UNE EN 1504-3 standard, in accordance with principle 3 (methods 3.1 and 3.3), principle 4 (method 4.4.) or principle 7 (methods 7.1. and 7.2.). The fixing substrate shall be sound, clean, free of friable parts, fully hardened and have completed its time of dimensional variation. The construction joints shall be respected.


  • Conservation and restoration of coats. Principle 7. Methods 7.1 and 7.2.
  • Repair of prefabricated elements.
  • Repair and regeneration of structural elements.
  • Structural concrete reinforcement works. Principle 4. Method 4.4.
  • Concrete repair work. Principle 3. Methods 3.1 and 3.3.
  • Repair work on edges, cornices, balcony edges and roofs.

Advantages & Benefits

  • Excellent bonding.
  • Excellent workability.
  • Free of chlorides.
  • Made of sulphur-resistant cement.
  • Rapid development of resistance.
  • Fast drying.
  • No retraction.
  • Thixotropic.


  • Precast concrete elements.
  • Concrete structures.

Substrate preparation

  • In any case, the specific requirements of EN 1504-10 must be taken into account.
  • Metal elements, such as reinforcement, must be free of rust, dust, mortar residues or other materials that may impede adhesion or contribute to corrosion.
  • Absorbent substrates must be wetted to saturation without puddling.
  • The substrates must be clean and sound, free of grease, paint or other substances that would prevent proper adhesion.
  • Very smooth substrates shall be mechanically treated to ensure proper adhesion of the repair mortar.
  • A suitable adhesion primer shall be used on low-porosity surfaces.

Instruction for Use

  • Mix ARGOTEC REPARACIÓN R4 with 4.0-4.5 L of clean water per 25 kg bag, preferably by mechanical means, until a homogeneous, creamy, lump-free mixture is obtained.
  • Apply the mortar manually with the trowel in thicknesses never less than 10 mm. nor more than 30 mm. pressing the mortar with the trowel on the substrate.
  • The application time is approximately 30 minutes depending on the environmental conditions.


  • Do not apply when there is a risk of frost, rain, strong wind or direct sunlight.
  • Do not apply below 5°C or above 30°C.
  • Do not apply on plaster supports.
  • Do not apply to plastic, wood, rubber, etc. surfaces.
  • Protect the cool surface from direct sun, rain and especially draughts.

Handling, storage and preservation

  • It is packaged in 25 kg multi-leaf paper bags with damp-proof sheets that allow it to be stored for 12 months in its original sealed packaging, safe from dampness.

Cleaning of Work Tools

  • If the product is fresh, with water
  • If the product is dry, scraping


  • The information contained in this document and any other advice provided, are given in good faith, based on DANOSA's current knowledge and experience when products are properly stored, handled and applied, in normal situations and in accordance with the recommendations of DANOSA. The information applies only to the application (s) and the product (s) to which reference is expressly made. In case of changes in the parameters of the application, or in case of a different application, consult the DANOSA Technical Service before using the DANOSA products. The information contained herein does not exonerate the responsibility of the building agents to test the products for the application and intended use, as well as their correct application in accordance with current legal regulations. The product images used in our communications are indicative and may differ slightly in color and aesthetic appearance in relation to the final product.Orders are accepted in accordance with the terms of our current General Sales Conditions.DANOSA reserves the right to modify, without prior notice, the data reflected in this documentation.Website: E-mail: Telephone: +34 949 88 82 10


  • Appearance: polvo
  • Colour: Grey
  • Peso (kg): 25
  • Yield (kg/m²): 18 kg/m² y cm de espesor
  • Logistic class: (A) Products in stock, available immediately
  • Product code: 350198

Technical Data

Concept Value Standard
Capillary Absorption (kg/m²h0.5) W2 -
Adhesión (N/mm²) 2 -
Mixing water (%) ~ Value 17/19 -
Clasificación según UNE EN 1504-3 R4 (PCC) -
Thermal compatibility. Part I. (N/mm²) 2 -
Thermal conductivity declared (W/mK) 1 -
Chloride ion content (%) 0.05 -
Bulk density (kg/L)v ~ Value 1,50 ± 0,16 -
Fresh mass density (kg/L) ~ Value 1,80 ± 0,16 -
Maximum thickness (mm) 30 -
Minimum thickness (mm) 10 -
Grain size range (mm) ~ value 0/2 -
Mass per unit area (nominal) (kg/m²) 25 -
Elasticity module (GPa) ≥ 20 -
CO2 permeability Clase III -
Water vapour permeability (m) Clase I -
Reaction to fire A1 -
Compacting resistence 24 hours (N/mm²) ≥ 15 -
Compacting resistence 28 days (N/mm²) ≥ 45 -
Compacting resistence 7 days (N/mm²) ≥ 30 -
Resistance to carbonation Pasa -
Retraction at 28 days (mm/m) ≤ 0,1 -
Hazardous substances Ver HS -
Application time (min) 30 -


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