{"product_id":"西卡sikarep-40-hb修補英泥","title":"Sika SikaRep 40 HB","description":"\u003cdiv style=\"background:#f0f4f8;border-left:4px solid #a02c2c;padding:16px;margin-bottom:24px;\"\u003e\n\u003cstrong\u003eAt a Glance:\u003c\/strong\u003e\n\u003cp\u003eSikaRep 40 HB is a class 40 cementitious mortar reinforced with polymer fibre for concrete repairing and rendering works. It can be applied to overhead, horizontal or vertical concrete or mortar surfaces, with a single-layer thickness of up to 40 mm without shuttering. Factory preblended for consistent quality control.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eContains polymer fibre to improve mechanical properties\u003c\/li\u003e\n\u003cli\u003eGood workability, easy to apply\u003c\/li\u003e\n\u003cli\u003eHigh build characteristics — up to 40 mm without shuttering\u003c\/li\u003e\n\u003cli\u003eFactory preblended for on-site quality control\u003c\/li\u003e\n\u003cli\u003eGood adhesion\u003c\/li\u003e\n\u003cli\u003eNon-toxic\u003c\/li\u003e\n\u003cli\u003eSuitable for rendering\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOverhead, horizontal or vertical concrete or mortar surfaces\u003c\/li\u003e\n\u003cli\u003eRepairing damaged and spalled concrete caused by reinforcement corrosion\u003c\/li\u003e\n\u003cli\u003eGeneral concrete repair and refurbishment work\u003c\/li\u003e\n\u003cli\u003eRendering works\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose SikaRep 40 HB?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eFibre reinforced:\u003c\/strong\u003e Contains polymer fibre to enhance crack resistance and mechanical performance\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHigh build without shuttering:\u003c\/strong\u003e Single-layer thickness from 6 mm to 40 mm with no formwork required, saving time on site\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eMulti-directional application:\u003c\/strong\u003e Can be applied to overhead, vertical and horizontal surfaces for versatile use\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eFactory preblended:\u003c\/strong\u003e Just add water — consistent, reliable quality every time\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eRepair and render:\u003c\/strong\u003e Suitable for both structural concrete repair and rendering, one product for multiple uses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003ePackaging\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eProduct\u003c\/th\u003e\u003cth\u003eSize\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eSikaRep 40 HB\u003c\/td\u003e\u003ctd\u003e25 kg bag\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eTechnical Data\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\u003eAppearance \/ Colour\u003c\/td\u003e\u003ctd\u003eConcrete grey\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eDensity (freshly mixed mortar, wet)\u003c\/td\u003e\u003ctd\u003e~2.00 kg\/L\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCompressive Strength (28 days)\u003c\/td\u003e\u003ctd\u003e\u0026gt; 40 N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength (7 days)\u003c\/td\u003e\u003ctd\u003e\u0026gt; 2.0 N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Adhesion Strength (7 days)\u003c\/td\u003e\u003ctd\u003e\u0026gt; 2.0 N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMixing Ratio (Water : Powder by weight)\u003c\/td\u003e\u003ctd\u003e1 : 5.88 (~4.25 L water per 25 kg bag)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eConsumption\u003c\/td\u003e\u003ctd\u003e~68 bags\/m³ (depending on surface and method)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLayer Thickness\u003c\/td\u003e\u003ctd\u003eMin. 6 mm \/ Max. 40 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePot Life\u003c\/td\u003e\u003ctd\u003e~40 minutes\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShelf Life\u003c\/td\u003e\u003ctd\u003e9 months from date of production\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eApplication Instructions\u003c\/h2\u003e\n\u003ch3\u003eSubstrate Preparation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eConcrete must be sound, clean and free from oils, grease or surface contaminants\u003c\/li\u003e\n\u003cli\u003eAll loose materials and surface laitance must be removed by high-pressure water jet blasting or mechanical means\u003c\/li\u003e\n\u003cli\u003eSmall area and spot repairs should be mechanically prepared by needle gunning, bush hammering or similar\u003c\/li\u003e\n\u003cli\u003eFeathered edges around repair areas should be squared off with an angle grinder and chiselled to a minimum depth of 10 mm\u003c\/li\u003e\n\u003cli\u003eDampen the prepared substrate with clean water\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eBonding Coat\u003c\/h3\u003e\n\u003cp\u003eSikaRep 40 HB should be applied over a bonding coat slurry. Mix 1 part of Sika Latex to 1 part of fresh Portland cement by weight (refer to each product data sheet).\u003c\/p\u003e\n\n\u003ch3\u003eMixing\u003c\/h3\u003e\n\u003cp\u003ePour approximately 4.25 litres of clean water into a suitable container. Slowly add all the powder while mixing continuously with a low-speed electric drill (max 500 rpm, approx. 1000 watt) for a minimum of 3 minutes until a smooth, lump-free consistency is achieved. Water can be adjusted +\/-10% to suit the required consistency.\u003c\/p\u003e\n\n\u003ch3\u003eConcrete Repair Application\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eWhile bonding coat is still tacky, pack the mortar well into the repair cavity using a placing technique (not rendering) to fill all voids and ensure thorough compaction\u003c\/li\u003e\n\u003cli\u003eForce the mortar against the edge of the repair and progressively work towards the centre\u003c\/li\u003e\n\u003cli\u003eFor repairs in excess of 40 mm thick, apply in layers ensuring each previous layer is sufficiently hardened and well keyed\u003c\/li\u003e\n\u003cli\u003eIf previous layers are over 48 hours old, scabble the surface and dampen; a bonding slurry of Sika Latex and Portland cement (1:1 by weight) may be used between layers\u003c\/li\u003e\n\u003cli\u003eSteel trowel the final layer if required for a smooth, tight finish\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eRendering Application\u003c\/h3\u003e\n\u003cp\u003eApply the render with a trowel. Press the mortar into the concrete surface and level to the required thickness. Wipe the surface with a sponge or float for a smooth finish.\u003c\/p\u003e\n\n\u003ch3\u003eCuring Treatment\u003c\/h3\u003e\n\u003cp\u003eProtect against direct sunlight and wind while hardening. Cover all exposed mortar with wet hessian, plastic sheeting or use Sika curing compound.\u003c\/p\u003e\n\n\u003ch2\u003eImportant Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eShelf life is only 9 months (not the typical 24 months) — check the production date\u003c\/li\u003e\n\u003cli\u003eStore in undamaged, unopened original sealed packaging in cool dry conditions; protect from direct sunlight and frost\u003c\/li\u003e\n\u003cli\u003eClean tools with water while mortar is still fresh; hardened material can only be removed mechanically\u003c\/li\u003e\n\u003cli\u003eAll technical data are based on laboratory tests; actual results may vary due to site conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eWhat is the maximum repair thickness per layer?\u003c\/h3\u003e\n\u003cp\u003eSingle-layer thickness ranges from a minimum of 6 mm to a maximum of 40 mm, with no shuttering required. For repairs exceeding 40 mm, apply in multiple layers, allowing each layer to harden before applying the next. If a previous layer is over 48 hours old, scabble the surface, dampen it and apply a bonding slurry.\u003c\/p\u003e\n\n\u003ch3\u003eIs a bonding coat required?\u003c\/h3\u003e\n\u003cp\u003eYes. A bonding coat slurry of Sika Latex mixed with fresh Portland cement at a 1:1 ratio by weight must be applied to the prepared substrate. Apply SikaRep 40 HB while the bonding coat is still tacky.\u003c\/p\u003e\n\n\u003ch3\u003eCan it be used for rendering?\u003c\/h3\u003e\n\u003cp\u003eYes. SikaRep 40 HB is suitable for rendering. Apply with a trowel, press into the concrete surface, level to the required thickness and finish with a sponge or float.\u003c\/p\u003e\n\n\u003ch3\u003eHow long is the pot life after mixing?\u003c\/h3\u003e\n\u003cp\u003eApproximately 40 minutes. Add about 4.25 litres of clean water per 25 kg bag and mix with a low-speed drill (max 500 rpm) for at least 3 minutes until smooth and lump-free.\u003c\/p\u003e","brand":"Sika 西卡","offers":[{"title":"Default Title","offer_id":46352841605270,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/sikarep-40-hb.jpg?v=1776710981","url":"https:\/\/wahhingwp.com\/en\/products\/%e8%a5%bf%e5%8d%a1sikarep-40-hb%e4%bf%ae%e8%a3%9c%e8%8b%b1%e6%b3%a5","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}