{"id":4178,"date":"2014-06-24T11:42:09","date_gmt":"2014-06-24T15:42:09","guid":{"rendered":"http:\/\/www.constructionspecifier.com\/?p=4178"},"modified":"2017-01-13T15:28:36","modified_gmt":"2017-01-13T20:28:36","slug":"durable-waterproofing-for-concrete-masonry-walls-field-testing-methods-of-water-repellency","status":"publish","type":"post","link":"https:\/\/www.constructionspecifier.com\/durable-waterproofing-for-concrete-masonry-walls-field-testing-methods-of-water-repellency\/","title":{"rendered":"Durable Waterproofing for Concrete Masonry Walls: Field testing methods of water repellency"},"content":{"rendered":"<p><strong>by Robert M. Chamra, EIT and Beth Anne Feero, EIT<br \/>\n<\/strong>There are two main field testing methods used for water repellency of concrete masonry units (CMUs), for quality assurance before being placed in a wall: droplet and RILEM tube testing. Completed assemblies can also be tested with RILEM tubes or other standard water spray tests such as ASTM E514, <em>Standard Test Method for Water Penetration and Leakage Through Masonry<\/em>.<\/p>\n<p><em>Droplet testing<\/em><br \/>\nThe droplet test is a quick and simple test to observe the water mitigation capabilities of a CMU. This test requires the unit to be placed horizontally on a level surface with the face shell oriented upward. Droplets are placed at different locations around the unit from a height of 50 mm (2 in.) or less.<\/p>\n<p>The specimens are to be placed in ambient temperature (22.9 \u00b1 5.6 C [75 \u00b1 10 F]) and moderate relative humidity (50 \u00b1 15 percent) and are monitored for evaporation facilitated by sunlight or wind; they are recorded at one-, five-, and 10-minute intervals. At the conclusion of the test, the droplets are classified as standing, partially absorbed, totally absorbed, or dry. Additional testing methods should be implemented to further evaluate failed droplet tests.<sup>*<\/sup><\/p>\n<figure id=\"attachment_4182\" aria-describedby=\"caption-attachment-4182\" style=\"width: 301px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-4-Droplet-Test-on-IWR-CMU.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-4182\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-4-Droplet-Test-on-IWR-CMU-1000x750.jpg\" alt=\"Commencement of a droplet test on a concrete masonry unit (CMU) containing integral water repellent.\" width=\"301\" height=\"226\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-4-Droplet-Test-on-IWR-CMU-1000x750.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-4-Droplet-Test-on-IWR-CMU-300x225.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-4-Droplet-Test-on-IWR-CMU-624x468.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-4-Droplet-Test-on-IWR-CMU.jpg 2048w\" sizes=\"auto, (max-width: 301px) 100vw, 301px\" \/><\/a><figcaption id=\"caption-attachment-4182\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">Commencement of a droplet test on a concrete masonry unit (CMU) containing integral water repellent.<\/span><\/figcaption><\/figure>\n<figure id=\"attachment_4183\" aria-describedby=\"caption-attachment-4183\" style=\"width: 305px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-5-Failed-Droplet-Test-on-IWR-CMU.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-4183\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-5-Failed-Droplet-Test-on-IWR-CMU-1000x750.jpg\" alt=\"After fi ve minutes, the originally beaded droplet has been partially absorbed into the CMU containing integral water repellent.\" width=\"305\" height=\"229\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-5-Failed-Droplet-Test-on-IWR-CMU-1000x750.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-5-Failed-Droplet-Test-on-IWR-CMU-300x225.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-5-Failed-Droplet-Test-on-IWR-CMU-624x468.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-5-Failed-Droplet-Test-on-IWR-CMU.jpg 2048w\" sizes=\"auto, (max-width: 305px) 100vw, 305px\" \/><\/a><figcaption id=\"caption-attachment-4183\" class=\"wp-caption-text\"><span style=\"font-family: arial,helvetica,sans-serif; font-size: 10pt;\">After five minutes, the originally beaded droplet has been partially <\/span><span style=\"font-family: arial,helvetica,sans-serif; font-size: 10pt;\">absorbed into the CMU containing integral water repellent.<\/span><\/figcaption><\/figure>\n<p><em>RILEM tube testing<\/em><br \/>\nThe standard RILEM tube can hold 5 ml (0.17 oz.) of water, which correlates with the static pressure of a 158-kph (98-mph) wind-driven rain. The short RILEM tube was developed for porous materials that are unable to pass a standard RILEM test. A short RILEM tube (approximately 2 ml [0.06 oz.] of water) correlates with a 97-kph (60-mph) wind-driven rain.<\/p>\n<p>Both RILEM tubes are plastic cylinders that are securely placed against the unit for testing using an impermeable putty. Once the RILEM tube is attached to the CMU, water is placed into the tube up to the 0 ml (0 oz) mark (top of tube). The RILEM tube is monitored at five-, 10-, 20-, 30-, and 60-minute intervals for any noticeable changes in the water column. Previous testing has shown specimens that hold water for 20 minutes will also typically hold for 60; this allows for shorter experiments. If 20 percent of the water is lost within a 20-minute interval, the CMU is considered to have failed the test\u2014if such losses are not observed, then the CMU has passed.<sup>**<\/sup><\/p>\n<figure id=\"attachment_4184\" aria-describedby=\"caption-attachment-4184\" style=\"width: 299px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-6-Short-and-Standard-Tube-on-CMU.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-4184\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-6-Short-and-Standard-Tube-on-CMU-1000x750.jpg\" alt=\"A standard RILEM tube is shown at the left CMU cell, while a short RILEM tube is shown at the right CMU cell.\" width=\"299\" height=\"225\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-6-Short-and-Standard-Tube-on-CMU-1000x750.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-6-Short-and-Standard-Tube-on-CMU-300x225.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-6-Short-and-Standard-Tube-on-CMU-624x468.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-6-Short-and-Standard-Tube-on-CMU.jpg 2048w\" sizes=\"auto, (max-width: 299px) 100vw, 299px\" \/><\/a><figcaption id=\"caption-attachment-4184\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">A standard RILEM tube is shown at the left CMU cell, while a short RILEM tube is shown at the right CMU cell.<\/span><\/figcaption><\/figure>\n<figure id=\"attachment_4185\" aria-describedby=\"caption-attachment-4185\" style=\"width: 307px\" class=\"wp-caption alignleft\"><a href=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-7-Failed-RILEM-Test-on-IWR-CMU.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\" wp-image-4185\" src=\"http:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-7-Failed-RILEM-Test-on-IWR-CMU-1000x750.jpg\" alt=\"A standard RILEM tube test has failed on this CMU with integral water repellent.\" width=\"307\" height=\"230\" srcset=\"https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-7-Failed-RILEM-Test-on-IWR-CMU-1000x750.jpg 1000w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-7-Failed-RILEM-Test-on-IWR-CMU-300x225.jpg 300w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-7-Failed-RILEM-Test-on-IWR-CMU-624x468.jpg 624w, https:\/\/www.constructionspecifier.com\/wp-content\/uploads\/2014\/06\/Figure-7-Failed-RILEM-Test-on-IWR-CMU.jpg 2048w\" sizes=\"auto, (max-width: 307px) 100vw, 307px\" \/><\/a><figcaption id=\"caption-attachment-4185\" class=\"wp-caption-text\"><span style=\"font-size: 10pt; font-family: arial,helvetica,sans-serif;\">A standard RILEM tube test has failed on this CMU with integral water repellent.<\/span><\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>* See NCMA\u2019s, <em>Standard Test Methods for Water Stream and Water Droplet Tests of Concrete Masonry Units<\/em> from 2009.<br \/>\n<sup>**<\/sup> See the article, \u201cTesting the Test: Water Absorption with RILEM Tubes,\u201d by Adrian Gerard Saldanha and Doris E. Eichburg in the August 2013 issue of <em>The Construction Specifier<\/em>. Visit www.constructionspecifier.com and select \u201cArchives.\u201d<\/p>\n<p>To read the full article, click <a href=\"http:\/\/www.constructionspecifier.com\/masterformat\/durable-waterproofing-for-concrete-masonry-walls-redundancy-required\/\">here<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are two main field testing methods used for water repellency of concrete masonry units (CMUs), for quality assurance before being placed in a wall: droplet and RILEM tube testing. Completed assemblies can also be tested with RILEM tubes or other standard water spray tests.<\/p>\n","protected":false},"author":4,"featured_media":4182,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[520,179,449,184,245,187,263,489,460],"tags":[859,860,995,658,113,996,863,647],"class_list":["post-4178","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-features","category-masterformat","category-uniformat","category-04-00-00-masonry","category-04-20-00-unit-masonry","category-07-00-00-thermal-and-moisture-protection","category-07-10-00-dampproofing-and-waterproofing","category-b2010exterior-walls","category-b20exterior-vertical-enclosures","tag-04-22-00concrete-unit-masonry","tag-07-19-00water-repellents","tag-cmu","tag-durability","tag-masonry","tag-rilem-tube-test","tag-water-repellent","tag-waterproofing","entry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Durable Waterproofing for Concrete Masonry Walls: Field testing methods of water repellency - The Construction Specifier<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.constructionspecifier.com\/durable-waterproofing-for-concrete-masonry-walls-field-testing-methods-of-water-repellency\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Durable Waterproofing for Concrete Masonry Walls: Field testing methods of water repellency - The Construction Specifier\" \/>\n<meta property=\"og:description\" content=\"There are two main field testing methods used for water repellency of concrete masonry units (CMUs), for quality assurance before being placed in a wall: droplet and RILEM tube testing. 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