<\/p>\n

a cement alternative has the potential to reduce emissions by roughly 40 percent.<\/strong><\/p>\n

by rick richardson
\ntechnology this week<\/em><\/p>\n

all roads lead to rome, as they say. as the building sector struggles with climate issues posed by concrete, some engineers believe a roman-era invention may provide the solution.<\/p>\n

more: <\/b>tack one launches new location tracker for children and seniors<\/a> | mit tests new ingestible vital signs sensor<\/a> | study: solar will lead global energy by 2050<\/a> | new tech could let evs go 3,000 miles on a single charge<\/a> | ai + mri = diseases that doctors might miss<\/a> | your boarding pass could onboard hackers<\/a> | the first police officer on the scene might be a drone<\/a> | research: accounting pros cautiously optimistic about generative ai<\/a><\/span>
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speaking at the climate smart engineering conference in melbourne, durability engineer miles dacre of the consulting firm aecom notes that concrete emissions are under more and more scrutiny.<\/p>\n

<\/p>\n

dacre is involved in large-scale infrastructure projects that typically require a lot of concrete.<\/p>\n

demand for concrete has doubled in the last 20 years, he says. \u201cit\u2019s our number one building material that our civilization requires to function as it does.\u201d<\/p>\n

however, the rocky mountain institute\u00a0estimates<\/a> that 5-8 percent of greenhouse gas emissions worldwide are attributable to concrete, and cement plays a significant role in those emissions. heating limestone during the cement-making process results in direct greenhouse gas emissions and indirect ones from burning fossil fuels to heat the kiln.<\/p>\n

according to dacre, calcined clay is a low-carbon substitute for portland cement that dates back 2000 years and is \u201cprobably the same concrete that the romans used.\u201d<\/p>\n

he declares, \u201cwe have to switch to that content as soon as possible.\u201d<\/p>\n

a research paper<\/a> in applied clay science proposed that using ancient roman concrete will decrease emissions and environmental issues.<\/p>\n

clinker, limestone, and gypsum \u2013 a clay that has been heat-treated \u2013 combine to create calcined clay.<\/p>\n

\u201cin addition to the environmental considerations, roman concrete also represents the epitome of extremely durable cement-based materials,\u201d the paper says. \u201croman concrete exposed to harsh maritime environments remains in a remarkable condition even 2000 years after construction, while modern ordinary portland cement concrete shows degradation within 32 weeks of exposure to seawater,\u201d the authors write.<\/p>\n

dacre says anyone in the engineering and construction industry who doesn\u2019t know about calcined clay must educate themselves. the cement alternative has the potential to reduce emissions by roughly 40 percent compared to ordinary portland cement.<\/p>\n

\u201cwe\u2019ve just got to prove it as quickly as possible; it\u2019s going to take everyone in the engineering business to do that.\u201d<\/p>\n","protected":false},"excerpt":{"rendered":"

can an ancient construction technique cut carbon emissions by 40 percent?<\/strong>
\n
\nby rick richardson
\ntechnology this week<\/em><\/p>\n","protected":false},"author":1373,"featured_media":121095,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"categories":[3120,3002,2306],"tags":[3445,3447,3477,120,629],"class_list":["post-120885","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-pro-member-exclusive","category-special","category-tech-and-fintech","tag-ai","tag-artificial-intelligence","tag-chatgpt","tag-tech","tag-technology"],"acf":[],"yoast_head":"\n