2-part acrylic, multi-purpose, fast strength gain repair mortar and grout Sikadur-12 Pronto is a 2-part acrylic, multi-purpose, fast strength gain, hand applied or flowable repair mortar and grout. For repairing and grouting all types of concrete elements paricularly at low temperatures. It has good mechanical strengths and good resistance to abrasion, impact and chemicals. Layer thickness as a flowable repair and grout: 5–30 mm. Layer thickness as a hand applied repair mortar (with sand addition): 20–100 mm. Application temperature: -10 °C to +30 °C. - Fast curing.
- Can be applied at low temperatures.
- Easy mixing.
- Good workability.
- High mechanical strengths.
- Good abrasion and impact resistance.
- Good chemical resistance.
- Application onto concrete, cementitious, stone and steel substrates.
- Versatile product - sand addition allows use as a repair mortar.
|
Usage Concrete Repairs:- Roadways
- Runways
- Car park decks
- Industrial floors
- Stairs
- Precast concrete units
- Void, cavity and pore hole filling
Grouting:- Bridge bearings
- Foundations
- Anchors
- Bolts
Advantages - Fast curing.
- Can be applied at low temperatures.
- Easy mixing.
- Good workability.
- High mechanical strengths.
- Good abrasion and impact resistance.
- Good chemical resistance.
- Application onto concrete, cementitious, stone and steel substrates.
- Versatile product - sand addition allows use as a repair mortar.
Packaging | Part A | 2,75 kg containers | | Part B | 22,25 kg bags | | Part A+B | 25,00 kg ready to mix units |
Refer to current price list for packaging variations. |
Technical Information Compressive Strength | Curing time | Curing temperature | | -10 °C | +5 °C | +20 °C | | 3 hours | ~55 N/mm2 | ~65 N/mm2 | ~67 N/mm2 | | 24 hours | — | ~71 N/mm2 | ~73 N/mm2 | | 10 days | — | ~75 N/mm2 | ~78 N/mm2 |
Modulus of Elasticity in Compression
Flexural Strength | Curing time | Curing temperature | | –10 °C | +5 °C | +20 °C | | 3 hours | ~13 N/mm2 | ~14 N/mm2 | ~16 N/mm2 | | 24 hours | — | ~16 N/mm2 | ~18 N/mm2 | | 10 days | — | ~17 N/mm2 | ~19 N/mm2 |
Tensile adhesion strength | > 1.5 N/mm2 (failure in concrete) | (ISO 4624) |
Creep | 0,12 % at 4,14 N/mm2 (600 psi) / 31 500 N (+23 °C) | | 0,11 % at 2,76 N/mm2 (400 psi) / 21 000 N (+23 °C) |
Coefficient of Thermal Expansion | 1,8 × 10–5 1/K (Temp. range -30 °C to 0 °C) | | 2,2 × 10–5 1/K (Temp. range 0 °C to +30 °C) | | 1,0 × 10–5 1/K (Temp. range +30 °C to +60 °C) |
Service Temperature -40 °C min. / +40° C max.
Thermal Compatibility | No delamination / pass | (ASTM C884) |
Chemical Resistance Resistant to many chemicals. Contact Sika Technical Services for additional information.
|
Application Information Mixing Ratio Part A : Part B = 1 : 8 (by weight) The mixing ratio can be varied, depending on the required consistency. Limitations: Part A : Part B = 1 : 7 to 1 : 11 (by weight). At a mixing ratio of 1 : 7, Sikadur-12 Pronto can be used as a flowable mortar or grout. Sikadur-12 Pronto can be filled with quartz sand. Maximum 1 part quartz sand per 2 parts of Sikadur-12 Pronto (by weight). Layer Thickness | Flowable repair mortar | 5–30 mm | | Hand applied repair mortar | 20–100 mm (with sand addition) | | Grout | 5–30 mm |
Additional layer thicknesses can be a applied in successive layers once each layer has cooled and hardened sufficiently. Where possible, the surface of the freshly applied intermediate layers should be scratched to form a key for subsequent layers. Peak Exotherm | ~66 °C (at +23 °C) | (ASTM D 2471) |
Flowability | ~400 mm (23 °C after 15 min) Flow channel |
| ~235 mm (23 °C after 15 min) Slump test |
Ambient Air Temperature –10 °C min. / +30 °C max. Relative Air Humidity 80 % maximum Dew Point Beware of condensation.
The substrate and uncured applied floor material must be at least +3 °C above dew point to reduce the risk of condensation or blooming on the surface of the applied product. Low temperatures and high humidity conditions increase the probability of blooming. Substrate Temperature –10 °C min. / +30 °C max. Substrate Moisture Content ≤4 % parts by weight Test method: Sika-Tramex meter, CM-measurement or Oven-dry-method. No rising moisture according to ASTM (Polyethylene-sheet). Pot Life | Temperature | Pot Life | | -10 °C | 60 minutes | | +5 °C | 30 minutes | | +10 °C | 20 minutes | | +20 °C | 10 minutes |
Pot-life begins when all parts have been mixed. It is shorter at high temperatures and longer at low temperatures. The greater the quantity mixed, the shorter the pot-life. To obtain longer workability at high temperatures, the mixed adhesive may be divided into smaller quantities. Another method is to chill parts A+B before mixing (although not below +5 °C). Curing Time | Temperature | Light Traffic | Full Cure | | -10 °C | ~180 minutes | ~12 hours | | +5 °C | ~90 minutes | ~8 hours | | +10 °C | ~60 minutes | ~6 hours | | +20 °C | ~30 minutes | ~3 hours |
Waiting Time / Overcoating Before applying Sikadur-12 Pronto on Sikafloor-10 Pronto N allow: | Substrate temperature | Time minimum | Time maximum | | -10 °C | 55 minutes | * | | +5 °C | 90 minutes | * | | +10 °C | 75 minutes | * | | +20 °C | 60 minutes | * |
Before applying Sikadur-12 Pronto on Sikadur-12 Pronto allow: | Substrate temperature | Time minimum | Time maximum | | -10 °C | 120 minutes | * | | +5 °C | 60 minutes | * | | +10 °C | 40 minutes | * | | +20 °C | 20 minutes | * |
*No time limit Sikadur-12 Pronto can be applied onto Sikafloor-10 Pronto N or Sikadur-12 Pronto after thorough cleaning. Times are approximate and will be affected by the changing ambient conditions particularly temperature and relative humidity. |
The above design is only a sample of the options available, for reference purposes only. Our policy of continuous improvement may result in a change of specifications without notice. If any discrepencies might be between the data sheet values and standards, we reserve the rights to make technical changes. Our company will not be held responsible, as all or any of pictures, drawings, weights and dimensions details or other elements in this document are only indicative and must not be considered contractual. Contact our sales team for other specifications or custom made products.
Contact our sales team for other specifications or custom made products.
