Mapelastic. All-climate, flexible cementitious membrane for concrete waterproofing and protection TECHNICAL NOTES USES

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1 Mapelastic All-climate, flexible cementitious membrane for concrete waterproofing and protection DESCRIPTION Mapelastic is a cementitious membrane that waterproofs concrete. It also protects concrete from chemical attack by de-icing salts, sulphates, chlorides and carbon dioxide that leads to deterioration and requires costly repair. Mapelastic is designed for application on new concrete structures, concrete structures repaired with Mapecem or Planitop mortars and renders with hairline cracks, as well as any cementitious surface subject to vibrations and subsequent cracking. Use Mapelastic on such hydraulic projects as channels and faces of dams in addition to swimming pools, basins, storage tanks, balconies and terraces. USES Waterproofing of concrete basins used for containing water Waterproofing bathrooms, showers, balconies, terraces, fountains, swimming pools, etc., before the installation of ceramic tile or natural stone Protection against the penetration of carbon dioxide into concrete pillars, concrete joists, and road and railway viaducts that are repaired with MAPEI s Planitop, Planigrout or Mapecem products, as well as structures with an insufficient layer of concrete covering on reinforcement rods Protection of concrete surfaces that can be exposed to seawater, de-icing salts (such as sodium and calcium chloride) and sulphates Waterproofing of retaining walls and precast concrete elements embedded in the ground Flexible smoothing layer for light-sectioned concrete structures, including those subjected to small deformations when under load (such as precast panels) Protection of render and concrete with shrinkage-produced cracks from the infiltration of water and aggressive atmospheric elements Mapelastic meets ANSI A regulations for waterproofing and is IAPMO-listed. TECHNICAL NOTES Mapelastic is a two-component mortar based on cementitious binders, fine-grained selected aggregates, special additives and synthetic polymers in water dispersion. Mixing together the two components produces a freeflowing mix that can be easily applied, even on vertical surfaces, at a thickness of up to 5/64" (2 mm) or 80 mils in a single coat. The high content and quality of Mapelastic s synthetic resins generate a hardened layer that remains flexible under all environmental conditions. The dried mortar is waterproof up to 50 feet (positive) hydrostatic head and resistant to chemical attack by de-icing salts, sulphates, chlorides and carbon dioxide. Mapelastic bonds excellently with all properly prepared concrete, masonry, ceramic and marble surfaces. As a result, structures protected and waterproofed with Mapelastic are hard-wearing, even in particularly adverse climatic conditions, in coastal areas with a high salt content in the atmosphere and in industrial areas with especially polluted air.

2 Mapelastic Do not use Mapelastic for thick dressings (more than 5/64" [2 mm] or 80 mils per coat). Apply Mapelastic at temperatures between 46 F and 95 F (8 C and 35 C). Do not add cement, aggregates or water to Mapelastic. Protect from rain and water spillage for the first 24 hours after application. When using Mapelastic to waterproof basins, do not fill these containers until Mapelastic has cured for at least 28 days and has been repeatedly washed with hot water. Mapelastic may be used as a coating subject to light foot traffic. In such installations, apply the first coat of Mapelastic with MAPEI's Fiberglass Mesh. The subsequent coat may be applied with a normal mix of Mapelastic, or optionally with a 5% to 10% reduction in powder in the mix, and then broom-finished for slip resistance. A colored, flexible acrylic sealer may be applied over Mapelastic; due to the variety of available sealers, complete a mockup and subject it to traffic for at least 14 days to ensure satisfactory performance. INSTRUCTIONS 1. Surface Preparation 1.1 Protection and waterproofing of concrete structures and elements (e.g., pillars and beams for road and railway viaducts, cooling towers, smokestacks, underpasses, retaining walls, applications in coastal areas, fountains, swimming pools, canals, faces of dams, columns, balcony fronts) The surface to be treated must be sound, stable and clean Remove all cement laitance, loose flakes, traces of powder, grease, oil and form release agents by sandblasting or washing with high-pressure water If using Mapelastic to waterproof and protect a structure in poor condition, remove the damaged parts by hand or mechanical demolition, or by using a hydro-demolition system or a hydroscarifier. Note: Using high-pressure water in Steps and avoids damage to the reinforcement rods and prevents vibrations that could cause the onset of small cracks in adjacent concrete After all rust has been removed by sandblasting and the reinforcement rods have been properly prepared (coated with MAPEI s Planibond 3C), repair any damage with ready-mixed mortar from MAPEI s Planitop, Planigrout or Mapecem product lines (see respective Technical Data Sheets) Dampen absorbent surfaces with water before applying Mapelastic. 1.2 Waterproofing of terraces, balconies and swimming pools Cementitious screed: Repair cracks caused by plastic shrinkage with Planibond EBA. Use Planitop 21, Planitop 23, Planitop 25, Mapecem 101, Mapecem 102 or Mapecem Quickpatch to level areas (to create slopes, fill dips, etc.) up to 2" (5 cm). While crack repair is recommended, MAPEI does not warrant that cracks will not reappear, even when following established repair techniques Existing concrete and ceramic floors: Existing floors and coverings in ceramic must be well-bonded to the substrate and free of substances that could compromise the bonding, such as grease, oil, wax and paint Renders: Cementitious renders must be well-cured (7 days per 1" [2,5 cm] of thickness in good weather conditions), well-bonded to the substrate, and free of all dust and paint. Before treating absorbent surfaces, dampen them with water. 2. Mixing 2.1 Pour Part B (liquid) into a suitable, clean container. Slowly add Part A (powder) while stirring with a mechanical mixer (do not mix by hand). 2.2 Carefully mix Mapelastic with a low-speed mechanical mixer (a low-speed mixer will help prevent air entrapment) for a few minutes. Make sure that no powder remains stuck to the sides or the bottom of the container. 2.3 Continue mixing until a homogenous mixture is obtained. 2.4 Mapelastic can also be mixed with a mortar mixer. If this technique is used, make sure that the mix is homogenous and lump-free before pouring it into the hopper of the pump. 3. Application 3.1 Mapelastic must be applied within 60 minutes of being mixed. 3.2 Application by trowel without Fiberglass Mesh Smooth the prepared surface by applying a thin layer of Mapelastic with a smooth trowel. Apply a second coat on the first layer while it is fresh, for a final thickness of about 5/64" (2 mm) or 80 mils. 3.3 Application by trowel with Fiberglass Mesh When waterproofing terraces, balconies, basins and swimming pools, insert a 3/16" x 3/16" (4,5 x 4,5 mm) layer of MAPEI s Fiberglass Mesh into the first layer of Mapelastic immediately after applying, to act as a reinforcement. The mesh must also be used in areas with either small cracks or in areas that are particularly stressed.

3 3.3.2 Key Mapelastic into the surface by applying a thin layer with the flat side of a 3/16" x 3/16" (4,5 x 4,5 mm) V-notched trowel Immediately apply additional Mapelastic and comb, using the V-notched side of the trowel, to ensure the proper thickness Embed Fiberglass Mesh into the freshly combed Mapelastic. Lap all seams and ends in the Fiberglass Mesh by 2" (5 cm) Immediately after laying the mesh, smooth the Mapelastic with the trowel s flat side To ensure a continuous membrane, wait 4 to 5 hours until the first coat of Mapelastic has set. Using the trowel s flat side, apply another coat of Mapelastic up to 5/64" (2 mm) in thickness, to completely encapsulate the Fiberglass Mesh. Do not exceed 5/64" (2 mm) per coat During waterproofing operations, use MAPEI s Mapeband TM around expansion joints and joints between horizontal and vertical surfaces After applying Mapelastic, wait at least 5 days for curing (in favorable climatic conditions) before laying ceramic tiles. 3.4 Application by spray method After preparing the surface, apply Mapelastic with a spray gun using a lance fitting to smooth the mortar. Apply at a maximum thickness of 5/64" (2 mm) or 80 mils per layer If a thicker layer is required, Mapelastic must be applied in several coats Successive coats can only be applied once the previous one is dry (after 4 to 5 hours) In areas with small cracks or that are highly stressed, insert a 3/16" x 3/16" (4,5 x 4,5 mm) layer of MAPEI s Fiberglass Mesh into the first layer of fresh Mapelastic Immediately after laying the mesh, smooth the Mapelastic with the trowel s flat side If the mesh needs additional coverage, apply another layer of Mapelastic with a spray gun During waterproofing operations, use MAPEI s Mapeband around expansion joints and joints between horizontal and vertical surfaces. 3.5 Installing ceramic tiles on Mapelastic Install tiles with the appropriate MAPEI cementitious adhesive. In swimming pools or where mosaics are installed, use the Granirapid or Kerabond/Keralastic system, or the combination of Keraset and Keraply Grout joints between the tiles with a suitable cementitious grout, such as Keracolor TM S or Ultracolor Seal expansion joints with an appropriate joint sealant material. 3.6 Application verification Before applying covering surfaces over Mapelastic, perform a Flood Test to verify the integrity of the application. 4. Protection 4.1 During hot weather, keep the product (both powder and liquid) out of direct sunlight before use. 4.2 After application and in particularly dry, hot or windy weather, protect the surface from rapid evaporation by covering it with sheets. 5. Cleaning Due to the high bonding strength of Mapelastic, wear protective gloves when working with it. Wash hands and tools with water before the mortar sets. Once Mapelastic has set, it can only be removed by mechanical means. Technical Performance Data The Technical Data table contains the identification and application data for the product. Figures 1, 2, 3 and 4 illustrate some of Mapelastic s characteristics. 6" (15 cm) Figure 1 shows the load diagram for evaluating the product s crack-bridging capacity. The sample to which Mapelastic is applied, on the undersize of the beam, is shown to be subjected to increasing loads in the middle. The crack-bridging capacity of Mapelastic is determined by measuring the maximum width of the crack in the concrete at the moment Mapelastic fractures. The degree of protection that Mapelastic offers to the concrete support is not limited to a simple covering of subsequent cracks provoked by heavy loads, shrinkage, temperature variations and other factors. Mapelastic itself is also resistant to chemical attack, as illustrated by the results of the following tests, and protects the concrete from carbonation and subsequent corrosion of the reinforcing rods. 1.97" (50 mm) 1.58" (40 mm) 1.18" (30 mm) 0.79" (20 mm) 0.39" (10 mm) Applied Load Mapelastic Covering 24" (61 cm) Crack Unprotected concrete (water-to-cement ratio = 0.8) Concrete (water-to-cement ratio = 0.8) protected with Mapelastic Concrete Beam Figure 1: Protection of a hairline crack with Mapelastic on the underside of a concrete beam subject to flexural stress Accelerated carbonation (days) Figure 2: Protection of Mapelastic against accelerated carbonation (30% of CO 2 ) on porous concrete Figure 2 compares accelerated carbonation (in an atmosphere of air enriched with 30% carbon dioxide) and shows how Mapelastic is impermeable to this aggressive substance. The Mapelastic membrane also protects the concrete from sodium chloride (i.e, seawater).

4 Penetration of sodium chloride inches (mm) 1.38" (35 mm) 0.98" (25 mm) 0.59" (15 mm) 0.29" (5 mm) Unprotected concrete (water-to-cement ratio = 0.8) Concrete (water-to-cement ratio = 0.8) protected with Mapelastic Days immersed in a 10% aqueous solution of sodium chloride Figure 3: Protection of Mapelastic against penetration of sodium chloride on porous concrete Figure 3 shows how Mapelastic blocks infiltration of salt into the concrete, which is porous and may be easily penetrated. Mapelastic also provides an impenetrable barrier against calcium-chloride-based de-icing salts, which can damage even the highest-quality concrete. Compressive strength psi (MPa) (70) 7250 (50) 4350 (30) 1450 (10) Unprotected concrete (water-to-cement ratio = 0.4) Concrete (water-to-cement ratio = 0.4) protected with Mapelastic Days immersed in a 30% aqueous solution of calcium chloride Figure 4: Protection of Mapelastic against the decrease in compressive strength of concrete caused by calcium-chloride-based de-icing salts Figure 4 shows the reduction in compressive strength (initially 9,400 psi [64,8 MPa]) of concrete permanently immersed in a solution of 30% calcium chloride. Mapelastic also offers efficient protection of the concrete and prevents the salt from damaging it.

5 TECHNICAL DATA at 73 F (23 C) and 50% relative humidity Consistency...Powder Liquid Color...Gray White Density (lbs./cu. ft. [kg/m 3 ]) (1 400) 68.7 (1 100) Shelf life...1 year 1 year Storage...In a dry place and at a temperature of at least 41 F (5 C) Health and safety... Consult the Material Safety Data Sheet (MSDS) for safe-handling instructions. Part A Part B Mapelastic APPLICATION DATA Color of mix...gray Mixing ratio...part A to Part B = 3 to 1 Consistency...Plastic (applied by trowel) Density of mix (lbs./cu. ft. [kg/m 3 ]) (1 700) Density after application by spraying (lbs./cu. ft. [kg/m 3 ]) (2 200) Application temperature range...46 F to 95 F (8 C to 35 C) Pot life...60 minutes FINAL PERFORMANCE Adhesion to concrete After 28 days psi (1,09 MPa) After 7 days, + 21 days in water...87 psi (0,6 MPa) Elongation DIN (modified) After 28 days...30% CONFORMS TO ANSI A Fungus resistance of flexible membrane substrate...conforms Seam strength...conforms Breaking strength...conforms Dimensional stability...conforms Waterproofness...Conforms Shear strength to ceramic tile and cement mortar...conforms Waterproofing capacity EN (modified) (50 feet positive hydrostatic head for 7 days)...waterproof Crack bridging of nonreinforced Mapelastic After 28 days...1/32" (1 mm) After 7 days, + 21 days in water...1/42" (0,6 mm) After 7 days, + 24 months in water...1/50" (0,5 mm) Crack bridging at breakage of Mapelastic membrane reinforced with Fiberglass Mesh After 28 days...1/16" (1,5 mm) Resistance to strong hydrostatic pressure...up to 7 bar (234 ft. [71,3 m]) water head, positive side Water vapor diffusion (permeability)(at 5/64" [2 mm] or 80 mils thickness)...about 1.4 perms PACKAGING Kit: 66.7 lbs (30.3 kg): Bag, Part A: 50 lbs. (22,7 kg) Jug, Part B: 2 U.S. gals. (7,57 L) APPROXIMATE COVERAGES* Manual application to 0.7 lbs./sq. ft. (3.1 to 3.44 kg/m 2 ) per 5/64" (2 mm) or 80 mils of thickness Spray gun application to 0.85 lbs./sq. ft. (3.65 to 4.2 kg/m 2 ) per 5/64" (2 mm) or 80 mils of thickness * Coverages shown are given for estimating purposes only. Actual jobsite coverages may vary according to substrate conditions, type of equipment used, thickness applied, and handling and application procedures

6 Mapelastic We proudly support the following industry organizations: Statement of Responsibility Before using, user shall determine the suitability of the product for its intended use and user alone assumes all risks and liability whatsoever in connection therewith. Any claim shall be deemed waived unless made in writing to us within fifteen (15) days from date it was, or reasonably should have been, discovered. MAPEI Headquarters of the Americas 1144 East Newport Center Drive Deerfield Beach, Florida Phone: US-MAPEI ( ) Technical Services (U.S. and Puerto Rico) (Canada) Customer Service MAPEI ( ) For the most current product and warranty data, visit Edition Date: August 8, 2009 PR4949 MALD_H09Evp 2009 MAPEI Corporation. All Rights Reserved. Printed in the USA.