Sikaflex-423 PowerCure, Accelerated Polyurethane Sealant for Floor Joints, Interior & Exterior, Grey, 600 mL
SIKA
Sika is a global leader in specialty chemicals for the construction and industrial sectors. The company develops and supplies innovative products and systems for bonding, sealing, damping, reinforcing, and protecting structures. With a strong focus on sustainability and performance, Sika serves a wide range of applications including concrete production, waterproofing, roofing, flooring, and structural strengthening.
Read more| Accelerated polyurethane sealant for floor joints and civil engineering applications Sikaflex-423 PowerCure is a 1-part, accelerated, elastic polyurethane sealant. It seals many kinds of joint configurations in floors and civil engineering structures. The elasticity is maintained over a wide temperature range and high mechanical and chemical resistance provides good durability.
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UsageThe Product is used for the following horizontal and vertical interior and exterior joint sealing applications:
Advantages
Packaging
Refer to the current price list for available packaging variations. ColourColour range to be defined by local sales organisation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Technical Information Shore A Hardness FINAL SHORE A HARDNESS ~40 (after 28 days) 80 % DEVELOPMENT OF SHORE A HARDNESS 80 % of final hardness Time +5 °C 6 days +10 °C 5 days +23 °C 2 days +40 °C 1 day DEVELOPMENT OF SHORE A HARDNESS Testing conditions +23 °C / 50 % rH. Time +5 °C +23 °C +35 °C 2 hours <5 ~7 ~16 4 hours ~5 ~15 ~23 8 hours ~10 ~21 ~26 24 hours ~26 ~28 ~32 7 days ~32 ~31 ~37 Secant Tensile Modulus ~0.65 N/mm2 at 100 % elongation (+23 °C) ~1.00 N/mm2 at 100 % elongation (−20 °C) (ISO 8339) Movement Capability ± 25 % (EN ISO 9047) Elastic Recovery ~90 % (EN ISO 7389) Tear Propagation Resistance ~9,0 N/mm (ISO 34-2) Service Temperature Maximum +80 °C Minimum -40 °C Chemical Resistance Resistant to many chemicals. Refer to EN 15651-4 SKZ test report for water and salt water. Contact Sika Technical Services for additional information. Joint Design The joint dimensions must be designed to suit the movement capability of the sealant. The joint width must be a minimum of 10 mm and a maximum of 40 mm. All joints must be correctly designed and dimensioned in accordance with the relevant standards and codes of practice before their construction. The basis for calculation of the necessary joint widths are: The type of structure Dimensions Technical values of adjacent building materials Joint sealing material The specific exposure of the building and the joints A width to depth ratio of 1:0.8 for floor joints must be maintained (for exceptions, see table below). For larger joints, contact Sika Technical Services for additional information. Example for typical joint widths for joints between concrete elements for interior applications considering 25 % movement capability according to EN 15651-4: Joint distance Minimum joint width Minimum joint depth 2 m 10 mm 10 mm 4 m 10 mm 10 mm 6 m 10 mm 10 mm 8 m 15 mm 12 mm 10 m 18 mm 15 mm Example for typical joint widths for joints between concrete elements for exterior applications considering 25 % movement capability according to EN 15651-4: Joint distance Minimum joint width Minimum joint depth 2 m 10 mm 10 mm 4 m 15 mm 12 mm 6 m 20 mm 17 mm 8 m 28 mm 22 mm 10 m 35 mm 28 mm For details of joint design and calculations refer to the following document, Sika Design guidlines: Dimensioning of construction joints. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Application Information Sag Flow
Product Temperature
Ambient Air Temperature
For applications at temperatures below +5 °C, please contact Sika Techincal Services. Substrate Temperature
The substrate temperature must be +3 °C above dew point temperature and free from frost and ice. Backing Material Use closed cell, polyethylene foam backing rod Tooling Time ~15 minutes (+23 °C / 50 % r.h.) |