{"id":3240,"date":"2013-11-15T09:40:29","date_gmt":"2013-11-15T13:40:29","guid":{"rendered":"http:\/\/spacing.ca\/national\/?p=3240"},"modified":"2013-11-15T02:41:20","modified_gmt":"2013-11-15T06:41:20","slug":"urban-planet-asphalt-heals-little-help","status":"publish","type":"post","link":"https:\/\/spacing.ca\/national\/2013\/11\/15\/urban-planet-asphalt-heals-little-help\/","title":{"rendered":"Urban Planet: Asphalt that heals itself (with a little help)"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-2422\" alt=\"feature-urban-planet\" src=\"http:\/\/spacing.ca\/national\/wp-content\/uploads\/sites\/3\/feature-urban-planet.gif\" width=\"600\" height=\"63\" \/><\/p>\n<p>Porous asphalt can reduce noise pollution and flooding because its low density makes it very absorbent. But there&#8217;s a downside: over time, the size of the pores increase, leading to crumbling and erosion.<\/p>\n<p>The solution?<\/p>\n<p>Self-healing asphalt.<\/p>\n<p>A new kind of asphalt has all the benefits of being porous, and it lasts twice as long as traditional pavement. By adding steel wool to asphalt, it was discovered the material becomes responsive to induction heating. After four years of use, a road paved with self-healing asphalt is simply given a heat treatment, which restrengthens the surface, returning the pores to a regular size.<\/p>\n<p>Watch the TED Talk below to see a presentation about how self-healing asphalt works.<\/p>\n<p><iframe loading=\"lazy\" width=\"600\" height=\"338\" src=\"http:\/\/www.youtube.com\/embed\/xP3-W546HYs?feature=oembed\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p>video via <a href=\"http:\/\/www.ted.com\/talks\" target=\"_blank\">TED<\/a><\/p>\n<p>photo courtesy <a href=\"http:\/\/selfhealingasphalt.blogspot.ca\" target=\"_blank\">Self Healing Asphalt<\/a><\/p>\n<p><i>Urban Planet is a roundup of blogs from around the world dealing specifically with urban environments. We\u2019ll be on the lookout for websites outside the country that approach themes related to urban experiences and issues.<\/i><\/p>\n<p><i>For more stories from around the planet, check out Spacing on\u00a0<a href=\"https:\/\/www.facebook.com\/pages\/Spacing\/111174192229238\">Facebook<\/a>\u00a0and\u00a0<a href=\"http:\/\/twitter.com\/#%21\/Spacing\">Twitter<\/a>. Do you have an Urban Planet worthy article you\u2019d like to share? Send the link to\u00a0<a href=\"mailto:urbanplanet@spacing.ca\">urbanplanet@spacing.ca<\/a><\/i><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Porous asphalt can reduce noise pollution and flooding because its low density makes it very absorbent. But there&#8217;s a downside: over time, the size of the pores increase, leading to crumbling and erosion. The solution? Self-healing asphalt. A new kind of asphalt has all the benefits of being porous, and it lasts twice as long<a href=\"https:\/\/spacing.ca\/national\/2013\/11\/15\/urban-planet-asphalt-heals-little-help\/\">Continue reading <span class=\"sr-only\">&#8220;Urban Planet: Asphalt that heals itself (with a little help)&#8221;<\/span><\/a><\/p>\n","protected":false},"author":8207,"featured_media":3245,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"_ef_editorial_meta_paragraph_assignment":"","_ef_editorial_meta_date_first-draft-date":"","_ef_editorial_meta_checkbox_needs-photo":"","_ef_editorial_meta_number_word-count":"","footnotes":""},"categories":[419,425,426,427,4],"tags":[],"class_list":["post-3240","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-infrastructure","category-spacing","category-streetscape","category-traffic","category-transit"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Urban Planet: Asphalt that heals itself (with a little help) - Spacing National<\/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:\/\/spacing.ca\/national\/2013\/11\/15\/urban-planet-asphalt-heals-little-help\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Urban Planet: Asphalt that heals itself (with a little help) - Spacing National\" \/>\n<meta property=\"og:description\" content=\"Porous asphalt can reduce noise pollution and flooding because its low density makes it very absorbent. 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