{"product_id":"sika-西卡-sikaswell-s-2-遇水膨脹密封膠","title":"Sika Sikaswell S-2","description":"\u003cdiv class=\"tldr-box\" style=\"background: #f0f4f8; border-left: 4px solid #2c5282; padding: 16px; margin-bottom: 24px;\"\u003e\n\u003cstrong\u003eQuick Summary:\u003c\/strong\u003e\u003cp\u003eSikaSwell® S-2 is a 1-part polyurethane hydrophilic sealant that swells on contact with water to seal construction joints and penetrations in concrete structures, preventing water ingress. Also used as adhesive for SikaSwell® A and P swelling profiles. Available in 600 ml unipacs (20 per box). Supplied by Wahhing Waterproofing Materials.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eSikaSwell® S-2 — Hydrophilic Swellable Joint Sealant\u003c\/h2\u003e\n\u003cp\u003eSikaSwell® S-2 is a 1-part polyurethane hydrophilic sealant which swells in contact with water to seal all types of construction joints and penetrations in concrete structures, preventing water transmission through joints. Moisture-curing, it can be used as a stand-alone joint sealing solution or as an adhesive to fix SikaSwell® A and SikaSwell® P swelling profiles. In an ideal concrete structure, the material can develop a swelling pressure of over 10 bar.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1-part, easy and fast to apply\u003c\/li\u003e\n\u003cli\u003eHighly economical joint sealing solution\u003c\/li\u003e\n\u003cli\u003eVersatile solution for joints and details\u003c\/li\u003e\n\u003cli\u003eOptimised expansion rate\u003c\/li\u003e\n\u003cli\u003ePermanently water resistant (wet and dry cycles)\u003c\/li\u003e\n\u003cli\u003eGood adhesion to various substrates\u003c\/li\u003e\n\u003cli\u003eBBA system approvals with SikaSwell® A-2010\u003c\/li\u003e\n\u003cli\u003eConforms to LEED v2009 IEQc 4.1 (VOC content \u0026lt; 420 g\/l less water)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eJoint Sealing:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eConstruction joints\u003c\/li\u003e\n\u003cli\u003ePipe and steel work penetrations through walls and floor slabs\u003c\/li\u003e\n\u003cli\u003eAround all types of penetrations and construction joints\u003c\/li\u003e\n\u003cli\u003eConstruction joints in cable ducts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eFixing \/ Adhering Swellable Profiles:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSikaSwell® A Profiles\u003c\/li\u003e\n\u003cli\u003eSikaSwell® P Profiles\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose SikaSwell S-2?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eActive Swelling:\u003c\/strong\u003e Swells on contact with water to actively fill gaps and seal joints, developing swelling pressure of over 10 bar\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWet-Dry Cycle Durable:\u003c\/strong\u003e Shrinks to original dimensions when dry, re-expands on further water contact for long-term performance\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEasy Application:\u003c\/strong\u003e 1-part gun-applied paste, no mixing required\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eDual Function:\u003c\/strong\u003e Works as stand-alone joint sealant or as adhesive for swelling profiles\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eInternationally Certified:\u003c\/strong\u003e BBA certified, WISSBAU sealing test, Hong Kong water permeability test report\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackaging\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eType\u003c\/th\u003e\u003cth\u003eSize\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eUnipac\u003c\/td\u003e\u003ctd\u003e600 ml\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePer box\u003c\/td\u003e\u003ctd\u003e20 unipacs\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProperty\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003cth\u003eStandard\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eChemical Base\u003c\/td\u003e\u003ctd\u003e1-part polyurethane, moisture curing\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eAppearance \/ Colour\u003c\/td\u003e\u003ctd\u003eOxide red\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eDensity\u003c\/td\u003e\u003ctd\u003e1.24 kg\/l at +23°C\u003c\/td\u003e\u003ctd\u003eISO 2811\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShore A Hardness (unswollen)\u003c\/td\u003e\u003ctd\u003e30–50 (7 days, +23°C \/ 50% r.h.)\u003c\/td\u003e\u003ctd\u003eEN ISO 868\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSwelling Pressure\u003c\/td\u003e\u003ctd\u003e\u0026gt; 10 bar in ideal concrete structure\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eService Temperature\u003c\/td\u003e\u003ctd\u003e-20°C to +50°C\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eApplication Temperature (product \/ air \/ substrate)\u003c\/td\u003e\u003ctd\u003e+5°C to +35°C\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSkin Time\u003c\/td\u003e\u003ctd\u003e60 minutes (+23°C \/ 50% r.h.)\u003c\/td\u003e\u003ctd\u003eEN 15651-1\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eSag Flow\u003c\/td\u003e\u003ctd\u003e\u0026lt; 2 mm (+23°C \/ 50% r.h.)\u003c\/td\u003e\u003ctd\u003eISO 7390\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShelf Life\u003c\/td\u003e\u003ctd\u003e9 months (unopened)\u003c\/td\u003e\u003ctd\u003e—\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eSwelling Rate (Change of Volume)\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eTime\u003c\/th\u003e\u003cth\u003eDemineralised Water\u003c\/th\u003e\u003cth\u003e5% Saline Solution\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003e1 day\u003c\/td\u003e\u003ctd\u003e~25%\u003c\/td\u003e\u003ctd\u003e~8%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e7 days\u003c\/td\u003e\u003ctd\u003e~100%\u003c\/td\u003e\u003ctd\u003e~25%\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e30 days\u003c\/td\u003e\u003ctd\u003e~200%\u003c\/td\u003e\u003ctd\u003e~50%\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003csmall\u003eNote: In a totally dry state, the product shrinks to its original dimensions and expands again upon further contact with water. (EN 14498)\u003c\/small\u003e\u003c\/p\u003e\n\n\u003ch2\u003eConsumption\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eTriangular Section Size\u003c\/th\u003e\u003cth\u003eLength per 600 ml Unipac\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003e12 mm\u003c\/td\u003e\u003ctd\u003e8.2 m\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e15 mm\u003c\/td\u003e\u003ctd\u003e6.2 m\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e20 mm\u003c\/td\u003e\u003ctd\u003e3.6 m\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003csmall\u003eConsumption depends on substrate roughness and absorbency. Figures are theoretical — apply to a test area first.\u003c\/small\u003e\u003c\/p\u003e\n\n\u003ch3\u003eRecommended Triangular Section Size (Stand-Alone Use)\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eStructure Thickness\u003c\/th\u003e\u003cth\u003eTriangular Section Size\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003e\u0026lt; 20 cm\u003c\/td\u003e\u003ctd\u003e12 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e20–30 cm\u003c\/td\u003e\u003ctd\u003e15 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e30–50 cm\u003c\/td\u003e\u003ctd\u003e20 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCuring Rate\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eTime (+23°C \/ 50% r.h.)\u003c\/th\u003e\u003cth\u003eCuring Depth\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003e1 day\u003c\/td\u003e\u003ctd\u003e~2.0 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003e10 days\u003c\/td\u003e\u003ctd\u003e~10.0 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eDo NOT use for movement joints\u003c\/strong\u003e — SikaSwell S-2 is for construction joints only\u003c\/li\u003e\n\u003cli\u003eRecommended for sealing against water pressures up to 2 bar; for higher pressures, use alternative Sika joint sealing solutions or contact Sika Technical Services\u003c\/li\u003e\n\u003cli\u003eMinimum concrete cover: 8 cm on both sides (reinforced concrete) or 15 cm on both sides (unreinforced concrete)\u003c\/li\u003e\n\u003cli\u003eProduct must be placed in the centre of the concrete structure\u003c\/li\u003e\n\u003cli\u003eAllow SikaSwell S-2 to harden for minimum 12 hours before placing concrete; for pouring height \u0026gt; 50 cm, harden for at least 24 hours\u003c\/li\u003e\n\u003cli\u003eDuring concrete placement, compact fresh concrete well around the SikaSwell® to ensure dense concrete without voids or honeycombs\u003c\/li\u003e\n\u003cli\u003eProtect SikaSwell S-2 against water (e.g. rain) until concrete is placed\u003c\/li\u003e\n\u003cli\u003eSubstrate must be sound, clean, dry or matt damp — do not apply in construction joints with standing water\u003c\/li\u003e\n\u003cli\u003eRough surfaces must first be levelled with appropriate Sika levelling mortar or treated mechanically\u003c\/li\u003e\n\u003cli\u003eWhen used with SikaSwell® profiles, press profiles firmly into fresh SikaSwell S-2 within a maximum of 30 minutes\u003c\/li\u003e\n\u003cli\u003eClean tools immediately with Sika® Colma Cleaner — hardened material can only be removed mechanically\u003c\/li\u003e\n\u003cli\u003eStore in original sealed packaging in dry conditions, protected from direct sunlight and frost\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3\u003eWhat is SikaSwell S-2 and how is it different from regular sealant?\u003c\/h3\u003e\n\u003cp\u003eSikaSwell S-2 is a hydrophilic swelling sealant specifically designed for waterproofing construction joints in concrete structures. Unlike regular elastic sealants, it actively swells on contact with water (up to ~200% volume increase in demineralised water at 30 days), filling gaps and sealing joints to prevent water ingress. When dry, it shrinks back to its original size and re-expands upon future water contact. It is NOT suitable for movement joints, window\/door sealing, or facade joints.\u003c\/p\u003e\n\n\u003ch3\u003eWhat water pressure can SikaSwell S-2 withstand?\u003c\/h3\u003e\n\u003cp\u003eIn an ideal concrete structure, SikaSwell S-2 can develop a swelling pressure of over 10 bar. However, the manufacturer recommends it for water pressures up to 2 bar. For pressures exceeding 2 bar, alternative or supplementary Sika joint sealing solutions should be used.\u003c\/p\u003e\n\n\u003ch3\u003eHow do I apply SikaSwell S-2?\u003c\/h3\u003e\n\u003cp\u003eApply SikaSwell S-2 using a gun in a triangular bead onto the prepared substrate (use a triangular nozzle or cut nozzle). Select the triangular section size (12–20 mm) based on structure thickness. Allow minimum 12 hours hardening before pouring concrete (24 hours if pour height exceeds 50 cm). Protect from rain until concrete is placed.\u003c\/p\u003e\n\n\u003ch3\u003eWhat packaging is available?\u003c\/h3\u003e\n\u003cp\u003eSikaSwell S-2 is available in 600 ml unipacs, 20 per box. Contact us via WhatsApp for pricing, Mong Kok store pickup, and Hong Kong delivery.\u003c\/p\u003e","brand":"Sika 西卡","offers":[{"title":"Default Title","offer_id":46352839901334,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/sika-_-sikaswell-s-2.jpg?v=1776710821","url":"https:\/\/wahhingwp.com\/en\/products\/sika-%e8%a5%bf%e5%8d%a1-sikaswell-s-2-%e9%81%87%e6%b0%b4%e8%86%a8%e8%84%b9%e5%af%86%e5%b0%81%e8%86%a0","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}