{"product_id":"sika-西卡-sikarep®-25-hb-25料","title":"Sika SikaRep-25 HB","description":"\u003cdiv class=\"tldr-box\" style=\"background:#f0f4f8;border-left:4px solid #2c5282;padding:16px;margin-bottom:24px\"\u003e\n\u003cstrong\u003eSummary:\u003c\/strong\u003e\u003cp\u003eSikaRep-25 HB is a general purpose Class 25 polymer fibre reinforced cementitious repair mortar for repairing concrete spalling, honeycombing, and surface damage. Can be built up to 50 mm without shuttering. Pot life approximately 40 minutes. Available in 18 kg bags.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eSikaRep-25 HB — General Purpose Class 25 Fibre Reinforced Repair Mortar\u003c\/h2\u003e\n\u003cp\u003eSikaRep-25 HB is a Class 25 cementitious repair mortar reinforced with polymer fibres for improved mechanical properties. It is designed for repairing concrete spalling, honeycombing, and damaged concrete surfaces. Its lightweight nature allows thick layers to be applied on vertical and overhead surfaces. The mortar is factory pre-blended for consistent on-site quality, non-toxic, and suitable for use as a rendering substrate.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eContains polymer fibre for enhanced mechanical strength and durability\u003c\/li\u003e\n\u003cli\u003eGood workability, easy to apply\u003c\/li\u003e\n\u003cli\u003eHigh build capability — 6 to 50 mm without shuttering\u003c\/li\u003e\n\u003cli\u003eFactory pre-blended for consistent quality\u003c\/li\u003e\n\u003cli\u003eGood adhesion (7-day tensile adhesion strength excellent)\u003c\/li\u003e\n\u003cli\u003eNon-toxic and safe\u003c\/li\u003e\n\u003cli\u003eSuitable for rendering\u003c\/li\u003e\n\u003cli\u003ePot life approximately 40 minutes\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTypical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eRepair of concrete spalling, honeycombing, and surface damage\u003c\/li\u003e\n\u003cli\u003eCeilings, walls, beams, columns, and other structural elements\u003c\/li\u003e\n\u003cli\u003eInterior and exterior concrete repair and maintenance\u003c\/li\u003e\n\u003cli\u003eThick layer repair on vertical and overhead surfaces\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose SikaRep-25 HB?\u003c\/h2\u003e\n\u003cp\u003eSikaRep-25 HB is particularly well-suited for concrete repair projects in Hong Kong:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eLightweight high build:\u003c\/strong\u003e Can be built up to 50 mm on vertical and overhead surfaces without shuttering\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFibre reinforced:\u003c\/strong\u003e Polymer fibres enhance crack resistance and durability\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003ePre-blended quality:\u003c\/strong\u003e Factory pre-mixed, just add water on site for consistent results\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWorkable:\u003c\/strong\u003e Pot life of approximately 40 minutes, suitable for large-area application\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackaging \u0026amp; Consumption\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eItem\u003c\/th\u003e\u003cth\u003eSpecification\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003ePackaging\u003c\/td\u003e\u003ctd\u003e18 kg bag\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eColour\u003c\/td\u003e\u003ctd\u003eConcrete grey\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConsumption\u003c\/td\u003e\u003ctd\u003eApprox. 83 bags\/m³ (depending on substrate and application method)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMixing Ratio\u003c\/td\u003e\u003ctd\u003eApprox. 3.3 litres water per 18 kg bag (water:powder = 1:5.45 by weight)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLayer Thickness\u003c\/td\u003e\u003ctd\u003eMinimum 6 mm, maximum 50 mm\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\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eChemical Base\u003c\/td\u003e\u003ctd\u003eCement-based powder\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eDensity (wet mix)\u003c\/td\u003e\u003ctd\u003eApprox. 1.78 kg\/L\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCompressive Strength (28 days)\u003c\/td\u003e\u003ctd\u003emeets Class 25 standard\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength (7 days)\u003c\/td\u003e\u003ctd\u003eexcellent\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Adhesion Strength (7 days)\u003c\/td\u003e\u003ctd\u003eexcellent\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePot Life\u003c\/td\u003e\u003ctd\u003eApprox. 40 minutes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShelf Life\u003c\/td\u003e\u003ctd\u003e9 months from date of production (unopened, stored in cool dry conditions)\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\u003eSubstrate must be sound, clean, free of oil and loose materials, and dampened with clean water before application\u003c\/li\u003e\n\u003cli\u003eA bonding coat slurry of Sika Latex mixed with cement should be applied to the substrate before applying SikaRep-25 HB\u003c\/li\u003e\n\u003cli\u003eFor repairs exceeding 50 mm, apply in layers, ensuring each layer has sufficiently hardened before the next\u003c\/li\u003e\n\u003cli\u003eIf the previous layer is over 48 hours old, scabble the surface and re-dampen\u003c\/li\u003e\n\u003cli\u003eProtect from direct sunlight and wind during curing — cover with wet hessian or curing membrane\u003c\/li\u003e\n\u003cli\u003eClean tools and equipment with water while mortar is still fresh\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat is the difference between SikaRep-25 HB and Renderoc HB25?\u003c\/h3\u003e\n\u003cp\u003eBoth are Class 25 repair mortars with similar functionality. SikaRep-25 HB is manufactured by Sika and contains polymer fibre reinforcement. Renderoc HB25 is manufactured by Fosroc. The choice typically depends on the brand specified for the project.\u003c\/p\u003e\n\n\u003ch3\u003eHow to choose between Class 25 and Class 40 repair mortar?\u003c\/h3\u003e\n\u003cp\u003eClass 25 mortar is suitable for general repair work with 28-day compressive strength exceedingmeets Class 25 standard. Class 40 offers higher strength for structural repairs. Use Class 25 for general maintenance and Class 40 for structural applications.\u003c\/p\u003e\n\n\u003ch3\u003eWhat is the pot life of SikaRep-25 HB?\u003c\/h3\u003e\n\u003cp\u003eAccording to the product data sheet, the pot life is approximately 40 minutes. The mortar should be packed firmly into the repair cavity using a rendering technique rather than placing, to ensure thorough compaction and eliminate voids.\u003c\/p\u003e","brand":"Sika 西卡","offers":[{"title":"Default Title","offer_id":45242482720918,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/sika_SikaRep-25-HB_polimer_fiber_reinforced_mortar_concrete_repair_bags.png?v=1760462903","url":"https:\/\/wahhingwp.com\/en\/products\/sika-%e8%a5%bf%e5%8d%a1-sikarep%c2%ae-25-hb-25%e6%96%99","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}