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Creating adurableW W aterproofing Systems aterproof EnvelopeforyourStructure Crystallization based Liquid Applied Waterproofing Membrane Waterproofing What is needed? Waterproofing is important in protecting the structure and ensuring that the structure is usable over its service life. The forces exerted by water are enormous and its effects are unpredictable. Water enters the structure through the available route. Due to extreme requirements we put on speed, economy and construction practices, the durability of concrete is severely affected. Due to construction and/or material problems, concrete structures both above and below ground are susceptible to water ingress, due to porous structural elements. Dampness entering the living space (especially through walls and ceilings) is an indication that the concrete structure has failed its durability and that structural elements have already begun deteriorating. Waterproofing is an art as much as it is a science and needs to be addressed as such. The main principle in waterproofing is “Keep the Outside water Out and/or Keep the Inside water In”. This principle is applicable to walls, basements, roofs/terraces, R.C.C structural elements where we want to keep outside water out and to structures such as swimming pools, water tanks, bathrooms, etc. where we want to keep the water in. The most successful waterproofing systems to date are the ones that put as many barriers as possible between the water and the structure we are attempting to protect. Again no single material can claim to be a complete waterproofing solution. The best solutions are the optimum combination of an excellent Material, Skilled Manpower to apply it, and use of the right Machinery and tools. This practice of waterproofing, is a sensible approach because, doing a waterproofing treatment with “Predetermined” Material, Method or Manpower would more often than not lead to failures. Each waterproofing application is unique and should be treated on its merits and demerits before specifying any particular system. While designing the waterproofing system, actual service conditions should be considered for selection of the correct material / system. That being said the following system or approach can be taken to maximize benefits of waterproofing: ?Provision of impermeable / waterproof concrete ?Correct joint detailing ?Provision of Liquid Applied or sheet membranes ?System Detailing ?Correct Application Proper Concrete Construction Practices, followed by correct joint and construction detailing, in addition to correct material system selection and skilled application is a must for a durable Waterproofing Solution Creating a Waterproof Envelope Systems and Solutions The start of good waterproofing lies in good concrete. Integral waterproofing becomes the base for a durable waterproofing solution. Integral waterproofing in addition to good mix design, placing and compaction practices can help eliminate unnecessary voids and capillaries in concrete, laying the foundation for a durable structure. The retention of water in the concrete leads to complete hydration. The hydration products fill the spaces previously occupied by the water in the capillaries thereby reducing the capillarity, and effectively lowering the permeability of the concrete, and also reduces surface cracking, which is a major factor affecting the durability and waterproof properties of the structure. In building masonry, special consideration and care should be given to interface of masonry and RCC elements, as it is these joints that become avenues for water ingress. These interfaces can be sealed with high quality polymer mortar and the edges treated with a good quality, mesh reinforced liquid applied waterproof membranes. PU based joint sealants can be used for expansion joints. The next barrier is the plaster, which is also a porous medium and allows water ingress. The best possible solution here is to use an integral waterproofing additive in the plaster for secondary protection. In addition use of a suitable anti-carbonation Elastomeric Protective Coating can also aid in creating an external waterproof superstructure. Slurry applied membranes or crystallization based slurries are an excellent option for waterproofing basements. These materials tide over inherent limitations of preformed membranes like overlapping joints and application across varying geometry. Applications for these materials are multifold, in external and internal areas of basements, wet areas, swimming pools, tanks, etc. The main point to remember while using these systems is the correct joint detailing, waterstops and interfaces (covings) between horizontal and vertical surfaces for a durable dry basement. Cracks and Joints form another weakness in the waterproofing system. These manifest themselves in the RCC or masonry members.. Some of the methods available include swell able water-stops, injection hoses, high-performance PU and acrylic resin injection systems. Non-wet Cracks can also be filled with polymer cement modified grouts or low viscosity epoxy grouts. Masonry can be treated with 2 component Chemical Damp-proof courses. Basement interiors and wet areas such as bathrooms warrant special attention as they are part of the internal living areas. Use of crystallization based slurries and elastic membrane forming slurries form a versatile system to waterproof wet areas. Easy application and years of experience are added advantages for use of these systems. Similar systems can also be used to waterproof tanks and swimming pools both internally as well as externally. These waterproof slurries should be of breathable type capable to avoid blisters, which eventually effect the barrier performance. These materials should have crack bridging properties in addition to adaptability to complex geometric shapes and should be compatible with moist surfaces. In case of waterproofing architectural details, natural stone cladding or exposed masonry facades, the best option is to use silicone, silane-siloxane or acrylic modified impregnations. to extend the beauty and protective quotient of these materials. These materials being transparent impregnations, do not affect aesthetics of the cladding and add to its protective waterproofing quotient. In addition to membranes, in wet areas it is imperative we use additional barriers like waterproof tile adhesives. The waterproof tile adhesive prevents water from entering the bathroom space, but also proves effective in stopping passage of water through the walls into the living space. In the long run, this approach provides much more efficiency over the sand-bed cement slurry method. Of course, the tile grouts, especially around room edges and around fittings should be polymer modified (not only white cement) to provide a better seal against water. MC’s Waterproofing Solutions for Different Applications 1 Dichtament DM: Liquid Integral Waterproofing Additive for Concrete and Mortar 2 MC-Special DM / MC-Special Plus: Dynamic SynCrystallization® based Powder Integral Waterproofing Additive for Concrete 3 MC-Mischoel AEA / Putz Dichtament: Plasticizer and Integral Waterproofing Additive for Mortar and Plasters 4 Nafufill BB2 / Nafufill SBR / Emceflex 30: Acrylic and SBR based Polymer Additives for Mortars, Plasters, Waterproof Pointing, etc.5 5 Centricrete / MC-DUR 1264: Injection Grouts for Sealing Cracks and Stopping Water 6 MC-Fix ST: Polymer based quick sealer plug to stop water leakages 7 Samafit VK: Two Component Chemical Damp-proof course for Sealing Rising Dampness in Masonry Structures 8 Roofex 2000: Acrylic Polymer based universal waterproofing liquid membrane for Sloping Roofs, domes, etc. 9 Dichtament DS / DS2: 1 or 2 Component Polymer modified hydraulically setting Waterproofing Slurry by crystallization 10 Dichtament DS-Flex + Emceflex 30: Two Component Liquid Applied Flexible Waterproofing Slurry 11 Zentrifix Elastic + Emceflex 15 / Nafuflex 2K: Two Component Highly flexible Liquid Applied Waterproofing Membrane 12 Nisiwa SH: Hydrophobic silicone based, transparent surface impregnator and sealing coat for Natural Stone and Masonry Facades 13 Emcephob SX / Emcephob AC: Siloxane / Acylic based Impregnation or Sealer for Mineral Substrates 14 EmceColor-flex / Betonflair System: Elastic, Elastomeric, Waterproof, Breathable, Crack Bridging, UV resistant Anti Carbonation Coating 15 Zentrival PL / Zentrival FM: Polymer based Waterproof, thin bed Tile Adhesive and Joint Grout Some of our Successful Long-lasting References Many Thousands of Square Meters of Waterproofing Projects Successful With the experience of our Company in Construction Technology, plus our IRP (German University Certified) applicators, Technical Advisors, International Application technologists, and qualified trained Applicator team in India, MC-Bauchemie provides a host of materials and application solutions for each and every water ingress issue. Over the years, our expertise and experience has been brought into practice to safeguard different structures such as hotels, residential and commercial constructions, educational institutes, hospitals, Heritage structures such as Humayun’s Tomb in Delhi, swimming pools, infrastructure like metros, bridges, tunnels, jetties, piers, ports, industrial structures and sealing and stabilization of porous soils in contact with structures. With experience of lakhs of square metres under our belt, our material systems and application makes MC-Bauchemie India a forerunner in waterproofing structures in the long run. Some of our

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