Page 398

32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf

CONTENTS CONCRETE REPAIR CORROSION CONTROL GROUTS & ANCHORS PROTECTIVE COATINGS INDUSTRIAL FLOORING SURFACE TREATMENTS JOINT SEALANTS CONCRETE JOINTING ROOFING WATERSTOPS WATERPROOFING JOINT FILLERS TIMBER FLOORING ALPHABETICAL Nitomortar AP Emer-Band Expansion joint - high movement Steel cover plate Emer-Band Nitomortar AP Nitomortar AP Applications Instructions Width selection Emer-Band is available in standard widths of 100 mm and 200 mm, in 1 mm thickness. Special widths up to 1 m can be produced to order for applications such as tanking etc. 2 mm thickness is also available on request. Emer-Band width selection is based on the width of the joint plus the width of the required bond area either side of the joint. In the case of narrow joints and cracks the minimum width of the unbonded area must be 20 mm. Where the quality of the concrete on either side of the joint is poor and porous, wider Emer-Band tape profiles should be used to ensure a leak free joint. In the case of a 20 mm wide joint with good quality concrete either side, a 100 mm wide Emer-Band tape can be used. On good quality, sound concrete, the bond area on each side of the joint should not be less 30 - 40 mm. The 200 mm width should be used where the condition of the concrete is such that porosity adjacent or close to the joint edges is suspect, where the joint is excessively wide or misaligned and when the Emer-Band is to be permanently immersed. INDEX 386 Nitomortar AP Emer-Band Emer-Band Nitomortar AP Steel cover plate Nitomortar AP Emer-Band Joint sealant Joint preparation Expansion joints must be packed with a firm, consolidated joint filler, such as Hydrocell, prior to laying the Emer-Band system. If necessary joints may be pre-sealed using an elastomeric sealant prior to laying the Emer-Band system. Ensure that any sealant used is capable of accommodating the anticipated joint movement. Where Emer-Band is to be turned up parapets and the like, a splay should be provided either cast in-situ or formed with Nitomortar AP so that the change in direction is smooth and progressive. Surface preparation Concrete surfaces onto which the Emer-Band is to be laid must be sound and dust free, with no frost or free surface water. New concrete must be fully cured and free from curing compound. The concrete surface ideally should be wood float finished for the width of the Emer-Band and free from irregularities, with well defined arises and no vertical misalignment between each side of the joint. Emer-Band Recessed joint with cover plate Water retaining structure Joint filler Waterstop Perimeter joint - wall to floor Emer-Band Crack repair - low movement Emer-Seal anti-rattle pad Car park with cover plate - high movement


32857 Parchem Technical Data Compendium 2015_Crop4emag.pdf
To see the actual publication please follow the link above