{"id":43874,"date":"2026-02-14T09:19:21","date_gmt":"2026-02-14T15:19:21","guid":{"rendered":"https:\/\/huewhite.com\/umb\/?p=43874"},"modified":"2026-02-14T09:19:21","modified_gmt":"2026-02-14T15:19:21","slug":"word-of-the-day-1095","status":"publish","type":"post","link":"https:\/\/huewhite.com\/umb\/2026\/02\/14\/word-of-the-day-1095\/","title":{"rendered":"Word Of The Day"},"content":{"rendered":"<p><em>Pozzolan<\/em>:<\/p>\n<blockquote><p><b>Pozzolans<\/b>\u00a0are a broad class of\u00a0<a title=\"Silicon dioxide\" href=\"https:\/\/en.wikipedia.org\/wiki\/Silicon_dioxide\">siliceous<\/a>\u00a0and\u00a0<a title=\"Aluminium oxide\" href=\"https:\/\/en.wikipedia.org\/wiki\/Aluminium_oxide\">aluminous<\/a>\u00a0materials which, in themselves, possess little or no\u00a0<a title=\"Cement\" href=\"https:\/\/en.wikipedia.org\/wiki\/Cement\">cementitious<\/a>\u00a0value but which will, in finely divided form and in the presence of water, react chemically with\u00a0<a title=\"Calcium hydroxide\" href=\"https:\/\/en.wikipedia.org\/wiki\/Calcium_hydroxide\">calcium hydroxide<\/a>\u00a0(Ca(OH)<sub>2<\/sub>) at ordinary temperature to form compounds possessing cementitious properties.\u00a0The quantification of the capacity of a pozzolan to react with calcium hydroxide and water is given by measuring its\u00a0<a title=\"Pozzolanic activity\" href=\"https:\/\/en.wikipedia.org\/wiki\/Pozzolanic_activity\">pozzolanic activity<\/a>.\u00a0<i><a title=\"Pozzolana\" href=\"https:\/\/en.wikipedia.org\/wiki\/Pozzolana\">Pozzolana<\/a><\/i>\u00a0are naturally occurring pozzolans of volcanic origin.<em> [<strong><a href=\"https:\/\/en.wikipedia.org\/wiki\/Pozzolan\" target=\"_blank\" rel=\"noopener\">Wikipedia<\/a><\/strong>]<\/em><\/p><\/blockquote>\n<p>I just stumbled across <em>pozzolans<\/em>, unknown to me, while researching <a href=\"https:\/\/huewhite.com\/umb\/2026\/02\/14\/too-easy-a-title-to-use-ctd\/\" target=\"_blank\" rel=\"noopener\">this post<\/a>. Noted in the <em><strong>Wikipedia<\/strong><\/em> article, &#8220;<em><a href=\"https:\/\/en.wikipedia.org\/wiki\/I-35W_Saint_Anthony_Falls_Bridge\" target=\"_blank\" rel=\"noopener\">I-35W Saint Anthony Falls Bridge<\/a><\/em>&#8220;:<\/p>\n<blockquote><p>In the concrete comprising the drilled shafts, piers and footings, a significant proportion of the\u00a0<a title=\"Portland cement\" href=\"https:\/\/en.wikipedia.org\/wiki\/Portland_cement\">Portland cement<\/a>\u00a0was replaced with\u00a0<a title=\"Slag\" href=\"https:\/\/en.wikipedia.org\/wiki\/Slag\">slag<\/a>,\u00a0<a class=\"mw-redirect\" title=\"Fly ash\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fly_ash\">fly ash<\/a>\u00a0and other\u00a0<a title=\"Pozzolan\" href=\"https:\/\/en.wikipedia.org\/wiki\/Pozzolan\">pozzolans<\/a>.<sup id=\"cite_ref-36\" class=\"reference\"><a href=\"https:\/\/en.wikipedia.org\/wiki\/I-35W_Saint_Anthony_Falls_Bridge#cite_note-36\"><span class=\"cite-bracket\">[<\/span>36<span class=\"cite-bracket\">]<\/span><\/a><\/sup>\u00a0These materials reduce the embodied energy of the structure and allow the concrete to resist the ingress of water and dissolved solids such as chloride ions. This allowed the structure to be designed to resist deterioration for much longer than structures made with conventional concrete.<\/p><\/blockquote>\n<p>I am not a civil engineer, but I know one. I might have to ask him to clarify this to me. Or maybe not. <em>Embodied energy<\/em>, while perhaps self-explanatory, eludes my sense of significance.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pozzolan: Pozzolans\u00a0are a broad class of\u00a0siliceous\u00a0and\u00a0aluminous\u00a0materials which, in themselves, possess little or no\u00a0cementitious\u00a0value but which will, in finely divided form and in the presence of water, react chemically with\u00a0calcium hydroxide\u00a0(Ca(OH)2) at ordinary temperature to form compounds possessing cementitious properties.\u00a0The quantification of the capacity of a pozzolan to react with calcium \u2026 <a class=\"continue-reading-link\" href=\"https:\/\/huewhite.com\/umb\/2026\/02\/14\/word-of-the-day-1095\/\"> Continue reading <span class=\"meta-nav\">&rarr; <\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-43874","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/43874","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/comments?post=43874"}],"version-history":[{"count":1,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/43874\/revisions"}],"predecessor-version":[{"id":43875,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/posts\/43874\/revisions\/43875"}],"wp:attachment":[{"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/media?parent=43874"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/categories?post=43874"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/huewhite.com\/umb\/wp-json\/wp\/v2\/tags?post=43874"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}