Fine spread coating for repair of concrete surface with XYPEX ADMIX C-1000 admixture

Product Characteristics
Single-component dry spread coating containing redispersable polymers with sealing admixture XYPEX ADMIX C-1000. Meets the requirements EN 1504-3.

  • mixed with water only, good workability
  • permanently seals the concrete base due to secondary crystallization in the pore system of a water-bearing concrete
  • highly chemically resistant, seals the concrete surface against oil products
  • frost-resistant
  • perfect adhesion to base
  • good mechanical properties
  • compensated in volume
  • as required by Act No. 258/2000 Coll. and Ministry of Health Decree No. 409/2005 Coll. is eligible for direct contact with drinking water

DENSOFIX XP a single-component dry mortar mix intended especially for repairs and sealing of damaged and repaired concrete and reinforced concrete surfaces. Spread coating DENSOFIX XP can be coated with any type of secondary protection in dependence on exposure of the repaired structure. It creates an insulating layer on the surface of a concrete structure, which is impermeable to water, oil, organic solvents, oil products etc.

Physical and mechanical parameters

Requirements / results according to EN 1504-3 class R3

Testing method R 3Requirements Results
Compressive strength (MPa) EN 12190 > 25 > 25
Chloride Ion Content (%) EN 1015-7 < 0.05 < 0.05
Adhesive Bond (MPa) EN 1542 > 1.5 > 1.5
Carbonation Resistance EN 153295 dk>control concrete complies
Elastic Modulus (GPa) EN 13415 > 15 > 15
Thermal Compatibility, part 1: Freeze-thaw (MPa) EN 13687-1 adhesion after test> 1.5 > 1.5
Capillary Absorption (kg m-2 h-0.5) EN 13057 < 0.5 < 0.5

Physical and mechanical parameters

Color Non-standard yellow-grey
Bulk density (kg/m3) 2070 ± 40
Tensile bending strength (MPa) 7 days > 3.0
28 days > 5.5
Compressive strength (MPa) 7 days > 16
28 days > 25
Dynamic E-module (GPa) < 25
Thermal expansion coefficient (K-1) 12.5 ± 0.4×10-6
Frost resistance > T100>
Filtration coefficient k (ms-1) < 2.5×10-12
Penetration of water under pressure penetration into the body with the spread coating < penetration into the body without the spread coating
1) at 20 ± 5 °C and relative humidity of ambient air 50 – 75 %

Test certificates
Meets the requirements of EN 1504-3, TP ŘSD Sec. 31 and TP SSBK III.
Certificate of conformity of factory production control under the system 2+ was issued by TSÚS Bratislava.
Supervision of the quality system, EMS and OHS is carried out by Notified Body No. 1020.

Instruction for preparation and application.
During the processing of dry mortar mixes DENSOFIX XP it is generally necessary to comply with the principles contained in the relevant technological process BETOSAN for repair of reinforced concrete structures (TP No. 1/06).

Base. Any incoherent, loose or weatherworn particles and dust shall be completely removed from the surface of the repaired base. The concrete surface cannot be contaminated by substances negatively affecting adhesion to the base (fats, greases, oils, etc.). Rinsing with pressure water is the best method for necessary complete removal of any dust from the entire repaired surface before application.

Preparation of spread coating. The spread coating is prepared by simple mixing with water. The recommended mixing ratio is as follows:

Dry component (kg) Water (litres) Thickness of applied layer (mm)
DENSOFIX XP/ 25 5.00 ÷ 5.75 min. 2 max.4

Workability of the product is 50 – 60 minutes under 20 °C.
Neither temperature of base nor temperature of ambient air shall be below + 5 °C and above + 30 °C.

DENSOFIX XP spread coating is applied either mechanically or manually. Manual application means finning off. The spread coating is applied in one layer whose thickness should not exceed value specified in the above table. Surfaces coated with the spread coating shall be efficiently protected against direct sunshine and wind.

Surface finalization After initial setting of the spread coating smoothing by a dry polyurethane or polystyrene finisher is used for surfacing.

Surface treatment. Repaired surfaces shall be properly treated immediately after completion to avoid especially direct exposure to sun, wind effect and other factors accelerating undesirable evaporation of the batch water. Use of the following treatment agents DENSOCURE W and DENSOCURE R proved well. It is desirable to properly moisten the repaired places several times a day for min. 3 days following the repair.

Specific consumption
Specific consumption of dry mortar is 1.6 to 1.7 kg/m2 at 1 mm of layer thickness.

More info on the product page
DENSOFIX XP (pdf, 0.2 MB)