{"product_id":"西卡sikagard-720-epocem-批蕩砂漿","title":"Sika Sikagard 720 EpoCem","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\u003eSikagard®-720 EpoCem HC is a three-part epoxy modified cementitious fine-textured mortar with thixotropic properties, designed for levelling, pore sealing and finishing of concrete and mortar surfaces. It serves as an ideal base preparation for Sika epoxy systems, with layer thickness 0.5–3 mm, consumption approx. 2.0 kg\/m² per mm, application temperature +10°C to +35°C, and pot life approx. 30 minutes.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eProduct Overview\u003c\/h2\u003e\n\u003cp\u003eSikagard®-720 EpoCem HC is a three-part, epoxy modified cementitious thixotropic fine-textured mortar designed for levelling, pore sealing and finishing of concrete and mortar surfaces. It combines the chemical resistance of epoxy resin with the breathability of cementitious mortar — impervious to liquids but permeable to water vapour (allows the substrate to \"breathe\"). It provides excellent adhesion to both dry and damp concrete. Solvent-free formula suitable for interior and exterior use.\u003c\/p\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEpoxy modified cementitious formula — combines chemical resistance with breathability\u003c\/li\u003e\n\u003cli\u003eThree-part pre-dosed packaging for accurate mixing\u003c\/li\u003e\n\u003cli\u003eThixotropic — suitable for vertical and horizontal surfaces\u003c\/li\u003e\n\u003cli\u003eExcellent adhesion to dry or damp concrete (≥1.5 N\/mm²)\u003c\/li\u003e\n\u003cli\u003eImpervious to liquids but permeable to water vapour\u003c\/li\u003e\n\u003cli\u003eFine, smooth surface finish — ideal base for subsequent epoxy coatings\u003c\/li\u003e\n\u003cli\u003eSolvent-free formula\u003c\/li\u003e\n\u003cli\u003eMinimum delays to follow-up applications of Sika epoxy products\u003c\/li\u003e\n\u003cli\u003eSuitable for interior and exterior use\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eSealing mortar\u003c\/strong\u003e — Pore sealing on concrete and mortar surfaces (0.5–2.0 mm thickness)\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eChemical-resistant repairs\u003c\/strong\u003e — Fair-faced concrete repairs in chemically aggressive environments\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eHorizontal and vertical pore sealing\u003c\/strong\u003e — Base preparation for subsequent coating systems\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eTemporary moisture barrier\u003c\/strong\u003e — Temporary moisture protection during construction\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eBase for Sika epoxy systems\u003c\/strong\u003e — Ideal substrate preparation for Sikafloor® and Sikagard® products\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy Choose Sikagard 720 EpoCem\u003c\/h2\u003e\n\u003cp\u003eSikagard®-720 EpoCem HC combines the strength of epoxy resin with the breathability of cementitious mortar, overcoming the vapour barrier issue of traditional epoxy products. The three-part pre-dosed packaging ensures accurate mix ratios, and its thixotropic formula prevents sagging on vertical surfaces. As a base mortar for Sika epoxy coating systems, it provides a smooth, uniform substrate and minimises waiting time between operations — a critical component of professional concrete surface finishing and protection systems.\u003c\/p\u003e\n\n\u003ch2\u003ePackaging\u003c\/h2\u003e\n\u003cp\u003ePre-dosed 21 kg set: Part A (resin) 1.14 kg + Part B (hardener) 2.86 kg + Part C (aggregate) 17 kg\u003c\/p\u003e\n\n\u003ch2\u003eConsumption Guide\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth\u003eItem\u003c\/th\u003e\u003cth\u003eValue\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd\u003eConsumption (per mm thickness)\u003c\/td\u003e\u003ctd\u003eApprox. 2.0 kg\/m²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eLayer thickness\u003c\/td\u003e\u003ctd\u003eMin. 0.5 mm, max. 3 mm\u003c\/td\u003e\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAbove figures are theoretical. Actual consumption depends on substrate porosity, surface profile and wastage.\u003c\/p\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\u003eEpoxy modified cementitious mortar\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eComponents\u003c\/td\u003e\u003ctd\u003eThree-part (A: resin \/ B: hardener \/ C: aggregate)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eMixing Ratio (by weight)\u003c\/td\u003e\u003ctd\u003e1 : 2.5 : 14–15\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eFinished Colour\u003c\/td\u003e\u003ctd\u003eGrey\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eDensity\u003c\/td\u003e\u003ctd\u003e2.0 kg\/L (at +20°C)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCompressive Strength\u003c\/td\u003e\u003ctd\u003eApprox. 40 N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Strength in Flexure\u003c\/td\u003e\u003ctd\u003eApprox. 5 N\/mm²\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eTensile Adhesion Strength\u003c\/td\u003e\u003ctd\u003eApprox. 1.5 N\/mm² (concrete failure)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eCO₂ Diffusion Resistance\u003c\/td\u003e\u003ctd\u003eμCO₂ ≈ 5400 (EN 1062-6)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eWater Absorption Coefficient\u003c\/td\u003e\u003ctd\u003eApprox. 0.03 kg\/m² × h⁰·⁵\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eApplication Temperature (ambient \u0026 substrate)\u003c\/td\u003e\u003ctd\u003e+10°C to +35°C\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003ePot Life\u003c\/td\u003e\u003ctd\u003eApprox. 30 minutes (at +30°C)\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd\u003eShelf Life\u003c\/td\u003e\u003ctd\u003ePart A \u0026 B: 12 months; Part C: 9 months (unopened, original sealed packaging)\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 with minimum compressive strength of 25 N\/mm² and minimum pull-off strength of 1.5 N\/mm²\u003c\/li\u003e\n\u003cli\u003eSubstrate can be damp but must be free of standing water and contaminants (oil, grease, etc.)\u003c\/li\u003e\n\u003cli\u003eEnsure good ventilation when working in confined spaces\u003c\/li\u003e\n\u003cli\u003eFreshly applied mortar must be protected from moisture, condensation and rain for at least 24 hours\u003c\/li\u003e\n\u003cli\u003eFor external applications, apply primer and Sikagard®-720 EpoCem HC on a falling temperature; \"pin holing\" can occur during rising temperatures\u003c\/li\u003e\n\u003cli\u003eStatic cracks must be pre-filled with Sikadur® or Sikafloor® epoxy resin; dynamic cracks (\u003e0.4 mm) require separate assessment\u003c\/li\u003e\n\u003cli\u003eDo not add extra water — this will cause surface discolouration\u003c\/li\u003e\n\u003cli\u003eRe-check surface moisture content if more than 5–7 days have passed since application\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eFAQ\u003c\/h2\u003e\n\u003ch3\u003eCan Sikagard 720 EpoCem be used on damp concrete?\u003c\/h3\u003e\n\u003cp\u003eYes. Sikagard®-720 EpoCem HC provides excellent adhesion to both dry and damp concrete. The substrate can be moist but must be free of standing water.\u003c\/p\u003e\n\u003ch3\u003eWhat is the consumption per square metre for Sikagard 720 EpoCem?\u003c\/h3\u003e\n\u003cp\u003eThe theoretical consumption is approximately 2.0 kg\/m² per mm of layer thickness. With a layer thickness range of 0.5–3 mm, consumption is approximately 1.0–6.0 kg per square metre depending on the required thickness.\u003c\/p\u003e\n\u003ch3\u003eHow long can the mixed material be used?\u003c\/h3\u003e\n\u003cp\u003eThe pot life at +30°C is approximately 30 minutes. Lower temperatures extend the working time, but prompt use after mixing is still recommended.\u003c\/p\u003e","brand":"Sika 西卡","offers":[{"title":"Default Title","offer_id":46352841965718,"sku":null,"price":1.0,"currency_code":"HKD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/9027\/1382\/files\/sikagard-720-epocem.jpg?v=1776710970","url":"https:\/\/wahhingwp.com\/en\/products\/%e8%a5%bf%e5%8d%a1sikagard-720-epocem-%e6%89%b9%e8%95%a9%e7%a0%82%e6%bc%bf","provider":"華興建築防水材料有限公司","version":"1.0","type":"link"}