MC Nafufill SBR, For Construction

Product Details

Nafufill SBR SBR based Bonding Agent and Polymer Component for Repair Mortars, Cement Screeds, Water Proofing and Polymer Cement Concrete Areas of Application • The production of repair mortars, e.g. in the repair and filling of structural concrete in bridge building and civil engineering • Bonding slurry between hardened concrete and fresh topping of concrete or mortars • For bonding new cementitious materials to existing cementitious substrates on horizontal or vertical surfaces • Cold joints between old and new concrete can be made strong and non-permeable with bonding slurry consisting of Nafufill SBR and cement mortar • Improvement of the mechanical characteristics of ready-to-use coarse and fine repair mortars intended for the repair of concrete (such as Zentrifix AS & Nafuquick) • Second component for Dichtament DS waterproofing system • Bonding mortars for bonding of hard-burned bricks, asbestos cement, natural stones, tiles etc. • Repairs mortars for mending damaged spots in precast concrete industry, pipelines etc. Application Notes General Nafufill SBR is a high Sponification-resistant latex dispersion for improving adhesive strength of all types of commonly used mortars. It is suitable as an admixture for obtaining waterproof concrete and mortars. It is suitable for preparation of repair mortars. Instructions for Use The base must be clean and free from loose particles, dust, grease, oil or other remnats. All laitance should be removed by wire brushing. In some cases, the existing concrete must be chipped to a sound substrate. Where surfaces are contaminated with oil or grease, this should be removed by using a strong industrial detergent or organic degreaser. The base must comply with the srequirements laid down by competent authorities. Minimum tensile strength of substrate should be 1.5 N/ mm2. Application All repair systems need a bond coat to be applied on the prepared surface. The bond coat should be forcefully & evenly brushed into the substrates after the pre-moistened surfaces have dried. Repair Mortar: The repair mortar should be applied wet-on-wet after the bond coat while it is still fresh. The compositions of bond coat & repair mortar for different cases are given below. In general the dosage of Nafufill SBR varies as per the actual requirements. In general, for normal repair mortars, we recommend about 8 to 10% Nafufill SBR by weight of cement. For extreme condition the dosage of Nafufill SBR should be increased. Curing Nafufill SBR inhibits rapid drying-out of the fresh mortar. The mortar should all the same be suitably protected from rapid drying in order to ensure uniform development of strength. Please note that all generally applicable regulations and working principles must be observed when using Nafufill SBR for the production and application of cement mortars/plaster