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STEM-Talk

Episode 60: Marie Jackson talks about the amazing endurance of Roman concrete

STEM-Talk

Dawn Kernagis and Ken Ford

Natural Sciences, Science, Alternative Health, Health & Fitness, Nutrition

4.7706 Ratings

🗓️ 27 March 2018

⏱️ 50 minutes

🧾️ Download transcript

Summary

Why is it that modern marine concrete structures crumble and corrode within decades, but 2,000-year-old Roman piers and breakwaters endure to this day? Episode 60 of STEM-Talk features Dr. Marie Jackson, a scientist who has spent the past two decades figuring out the answer to that and other questions about the durability of ancient Roman mortars and concretes. Marie is a research associate professor in the department of geology and geophysics at the University of Utah. She is known for her investigations in pyroclastic volcanism, mineralogy, materials science, and archaeological science that are breaking new ground in understanding the durability and specialty properties in ancient Roman mortars and concretes. She is particularly focused on deciphering Roman methods and materials in the hope of producing innovative, environmentally friendly cementitious masonry products and nuclear waste storage materials that would benefit the modern world. She was the lead principal investigator of a drilling project in the summer of 2017 on the Surtsey Volcano, which is on a small isolated island off the coast of Iceland. The volcano is growing the same mineral cements as Roman marine cement and the drilling project is helping provide extraordinary insights into the materials and processes the Romans used. She is particularly focused on deciphering Roman methods and materials in the hope of producing innovative, environmentally friendly cementitious masonry products and nuclear waste storage materials that would benefit the modern world. She was the lead principle investigator of a drilling project in the summer of 2017 on the Surtsey Volcano, which is on a small isolated island off the coast of Iceland. The volcano is growing the same mineral cements as Roman marine cement and the drilling project is helping provide extraordinary insights into the materials and processes the Romans used. After receiving her bachelor of science in earth sciences from the University of California Santa Cruz, Marie traveled overseas and received a doctorate from the Universite de Nantes in France. She returned stateside and received a doctor of philosophy from John Hopkins University as well as a Ph.D. in earth and planetary sciences. Marie then went to work as a research geoscientist for the U.S. Geological Survey. After taking time off to raise a family, Marie joined the department of civil and environmental engineering at the University of California, Berkeley, as a project scientist. She stepped into her current position at the University of Utah in 2016.

Transcript

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0:00.0

Welcome to STEM Talk.

0:02.0

STEM Talk.

0:03.0

STEM Talk.

0:04.0

STEM Talk.

0:05.0

Welcome to STEM Talk, where we introduce you to fascinating people who passionately

0:10.0

inhabit the scientific and technical frontiers of our society.

0:14.0

Hi, I'm your host, Don Cornagus, and joining me to introduce today's podcast as the Man Behind the Curtain Dr. Ken Ford,

0:20.0

HMC's director and chairman

0:22.2

of the double secret selection committee that selects all the guests who appear on STEM Talk.

0:26.2

Hi, Dawn, great to be here today and out from behind the curtain. As a romophile of longstanding,

0:33.9

I've wondered why modern marine concrete structures crumble and corrode within just decades,

0:40.0

but a 2,000-year-old Roman pier or breakwater, these things endure perfectly or in great shape,

0:47.4

to this very day.

0:49.0

Well, today's episode features Dr. Marie Jackson, a scientist who has made a concerted effort to

0:55.9

understand the longevity and endurance of Roman concrete. In a nutshell, she and her colleagues

1:03.0

have cracked the mystery. But before we get to today's interview with Marie, we have some

1:08.3

housekeeping to take care of. First, we really appreciate

1:11.2

all of you who have subscribed to STEM Talk, and we especially appreciate all of the wonderful

1:15.0

five-star reviews that are piling up on iTunes. As we announced in several earlier episodes,

1:20.1

the Double Secret Selection Committee has been continually and carefully reviewing the iTunes

1:24.2

reviews, with an eye towards selecting the wittiest and most lavishly

1:27.9

praise-filled reviews to read on STEM Talk. As always, if you hear your review read on STEM Talk,

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