Mortero y lechada - Coferencia 13namc

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  MostCommonMythsforMasonryMortarandGrout Jamie Farny 1 , Nick Lang 2 , and Phillip J. Samblanet 3 A BSTRACT Masonry construction has been used for centuries, even millennia, yet is often misunderstood. Many de-signers are not exposed to masonry until they are in practice. As a result, some common myths persist.In part, these are due to confusion with concrete construction, which is more widely used and understood.This paper addresses the following common misunderstandings about masonry mortar and grout: selectinga high-strength mortar when a lower strength would suffice; requiring testing for field-sampled mortar andtrying to apply a compressive strength requirement to it; not understanding that retempering mortar—addingwater and remixing—is typically good practice; limiting the selection of cementitious materials for mortar;and limiting the water content of grout. Best practices for design, quality assurance, and construction areoffered. K EYWORDS :  mortar, grout, compressive strength, mix proportioning, quality assurance, quality control 1  Directory of Building Marketing; Portland Cement Association; Skokie, IL, USA; 2 Vice President of Business Development; National Concrete Masonry Association; Herndon, VA, USA; 3  Executive Director; The Masonry Society; Longmont, CO, USA; Farny J., Lang N., and Samblanet P. (2019, June). “Most Common Myths for Masonry Mortar and Grout.” In P.B. Dillon & F.S. Fonseca (Eds.), Proceedings of the Thirteenth North American Masonry Conference . Paper presented at the 13 th North American Masonry Conference, Salt LakeCity, Utah (pp. 823–835). Longmont, CO: The Masonry Society.  c  2019 TMS. All rights reserved. ISSN 1053-2366. 823  P ROCEEDINGS OF THE  13 TH N ORTH  A MERICAN  M ASONRY  C ONFERENCE 824  S ALT  L AKE  C ITY , U TAH  J UNE  16–19, 2019 825  P ROCEEDINGS OF THE  13 TH N ORTH  A MERICAN  M ASONRY  C ONFERENCE 826

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