DENSOCRETE 111
Anticorrosive protection /adhesive bridge
Product Characteristics
Two-component material consisting of dry inorganically based component and water-soluble modified
acrylate dispersion. Meets the requirements of EN 1504-7.
- supplied in specified ratio of components
- good workability, applied manually or by spraying
- perfect adhesion to concrete base and reinforcement
- permanently water-resistant
- provides active re-alkalization of reinforcement surrounding
Use
DENSOCRETE 111 is a two-component polymer cement mix intended for protection of reinforcement (principle No. 11, method 11.1 according to EN 1504-9) and creation of adhesive layers between the concrete base and repair materials, especially BETOSAN MONOCRETE PPE and PPE TH series, in cases of repairs of damaged concrete and reinforced concrete surfaces.
Physical and mechanical parameters
Requirements / results according to EN 1504-7
| Testing method | Requirements | Results | |
| Anticorrosive protection | EN 15183 | painted area without corrosion and swelling, corrosion of the plate edge <1mm | complies |
| Glass Transition Temperature | EU 12614 | NPD | |
| Skid resistance | EU 15184 | NPD | |
Physical and mechanical parameters
| Color | Non-standard grey |
| Bulk density of dry component (kg/m3) | 1620 ± 40 |
| Content of water-soluble chlorides(%) | <0.01 |
| Adhesion to base (MPa) | >25 |
Test certificates
Initial tests types according to EN 1504-3, Protocol No. 1301-CPD-0295 issued by TSÚS Bratislava.
Supervision of the quality system, EMS and OHSAS is carried out by Notified Body No. 1020.
Instruction for preparation and application.
Base
Any incoherent, loose, weatherworn or otherwise visibly damaged concrete shall be completely removed from the repaired concrete surface before application. The concrete surface cannot be contaminated by substances negatively effecting adhesion to the base (fats, greases, oils, etc.). Tensile strength of concrete surface layers shall be 1.5 MPa at least. Corroded reinforcement shall be carefully released and cleaned of any corrosive products (min. degree Sa1½ according to ČSN EN ISO 12944-4). The base must be perfectly moistened before the application of the adhesive bridge. If the base cannot be moistened, it is necessary to apply priming coat.
Preparation of adhesive bridge has two steps. The first step is the preparation of the priming solution, which shall be applied to reduce absorbability of the base in cases it can’t be properly moistened. Priming solution is prepared by mixing 0.5 liters of the liquid component with water in the ratio ranging between 1 : 5 and 1 : 8 in dependence on porosity and base quality (dense quality concrete requests higher dilution!). The adhesive bridge DENSOCRETE 111 itself is prepared in sufficiently voluminous vessel by proper mixing of 25kg of dry component and 7.5 kg (7.5 liters) of liquid component. Most suitable is to use an electrically driven propeller agitator. Consistency can be adjusted by adding up to 10% water, if needed.
In case of smaller size packaging the stated quantities are 10 x less.
Workability. Workability of the prepared adhesive bridge is 90 minutes under 20 °C and relative humidity 50-70 %. The prepared composition shall be efficiently protected against desiccation. Neither temperature of the base nor temperature of ambient air shall be below +5 °C and above +30 °C.
Adhesion bridge application. Before application of the adhesive bridge DENSOCRETE 111 it is necessary to thoroughly moisten the base (see above). If it is not practicable and base is excessively dry or absorbent, it is required for the surface to be coated with priming coat. The surface is primed by solution prepared by the above-mentioned process i.e. by diluting the liquid component with water in the ratio 1:5 up to 1:8 in dependence on porosity and the base quality. In cases of extraordinary absorbent and dry bases the priming can be repeated (two or three times) with technological break of at least 120 minutes between each coat layer. Priming coat shouldn’t create a glossy film on the concrete surface. Application of the adhesive bridge itself should be performed on a primed base with a technological break from 120 minutes to 24 hours after the priming. If DENSOCRETE 111 is used as corrosion protection of reinforcement, the second layer shall be applied with a technological break ranging from 1 hour to 6 hours after the first one but directly before application of a repair mortar so that the mortar is applied into the moistened bridge. The process is the same if it is used as an adhesive bridge. DENSOCRETE 111 is applied on the primed surface of the repaired construction so that thickness of the applied layer ranges approximately between 0.5 and 1.0 mm. The repair mortar or freshly laid concrete is applied, without delay, into the applied adhesive bridge. Open time. After application on the construction the so-called open time of the adhesive bridge is max. 30 minutes under 20°C and relative humidity 50 – 70 %. It is necessary to take into account that the possible application period of the mortar or new concrete is reduced with increasing temperature and reducing relative humidity.
Open time. After application on the construction the so-called open time of the adhesive bridge is max. 30 minutes under 20°C and relative humidity 50 – 70 %. It is necessary to take into account that the possible application period of the mortar or new concrete is reduced with increasing temperature and reducing relative humidity.
Specific consumption
Specific consumption of the adhesive bridge amounts to 0.6 ÷ 1.2 kg/m2 in dependence on surface roughness and absorbability.
More info on the product page
DENSOCRETE 111 (ENG) (pdf, 0.4 MB)
