Clever Romans

Architecture, graphic design, your projects.

Moderators: Calilasseia, Blip, ADParker

Clever Romans

#1  Postby Macdoc » Jul 05, 2017 8:29 am

Still have some tricks we are unravelling

Ancient Romans made the world’s ‘most durable’ concrete. Here’s how it could hold back rising seas
Scientists on Monday said they have solved the mystery of how Roman concrete can withstand the sea for 2,000 years and counting, a feat impossible using modern mixes.
Image
Drilling at a marine structure made with Roman concrete in Portus Cosanus, Tuscany, in 2003. (J.P. OLESON)



more
https://www.thestar.com/news/world/2017 ... -seas.html
User avatar
Macdoc
THREAD STARTER
 
Posts: 11039
Age: 69
Male

Country: Canada/Australia
Australia (au)
Print view this post

Ads by Google


Re: Clever Romans

#2  Postby Mazille » Jul 05, 2017 9:10 am

Yeah, but what have the Romans ever done for us?
- Pam.
- Yes?
- Get off the Pope.
User avatar
Mazille
RS Donator
 
Posts: 19174
Age: 31
Male

Austria (at)
Print view this post

Re: Clever Romans

#3  Postby tuco » Jul 05, 2017 9:42 am

From the article:

It’s one thing to assemble the ingredients, another to know how to bake the cake.


Indeed.

The Romans mined a specific type of volcanic ash from a quarry in Italy. Jackson is attempting to recreate this durable concrete using San Francisco seawater and more abundant volcanic rocks. She has several samples sitting in ovens and jars in her lab, which she will test for evidence of similar chemical reactions.


gl
tuco
 
Posts: 13275

Print view this post

Re: Clever Romans

#4  Postby DavidMcC » Jul 05, 2017 12:03 pm

Macdoc wrote:Still have some tricks we are unravelling

Ancient Romans made the world’s ‘most durable’ concrete. Here’s how it could hold back rising seas
Scientists on Monday said they have solved the mystery of how Roman concrete can withstand the sea for 2,000 years and counting, a feat impossible using modern mixes.
...

AFAIK, they also invented glass, which impresses me just as much as concrete does.
May The Voice be with you!
DavidMcC
 
Name: David McCulloch
Posts: 13807
Age: 63
Male

Country: United Kigdom
United Kingdom (uk)
Print view this post

Re: Clever Romans

#5  Postby zulumoose » Jul 05, 2017 12:22 pm

AFAIK, they also invented glass, which impresses me just as much as concrete does.


I think it would be more accurate to say they replicated glass, which was invented by Zeuss - Mr Lightning Bolts. Does that make it Greek?
User avatar
zulumoose
 
Posts: 1901

Country: South Africa
South Africa (za)
Print view this post

Re: Clever Romans

#6  Postby Thomas Eshuis » Jul 05, 2017 12:33 pm

zulumoose wrote:
AFAIK, they also invented glass, which impresses me just as much as concrete does.


I think it would be more accurate to say they replicated glass, which was invented by Zeuss - Mr Lightning Bolts. Does that make it Greek?

Ancient Egyptians actually:
https://en.wikipedia.org/wiki/History_of_glass
"Respect for personal beliefs = "I am going to tell you all what I think of YOU, but don't dare retort and tell what you think of ME because...it's my personal belief". Hmm. A bully's charter and no mistake."
User avatar
Thomas Eshuis
 
Name: Thomas Eshuis
Posts: 26383
Age: 27
Male

Country: Netherlands
European Union (eur)
Print view this post

Re: Clever Romans

#7  Postby DavidMcC » Jul 05, 2017 7:09 pm

zulumoose wrote:
AFAIK, they also invented glass, which impresses me just as much as concrete does.


I think it would be more accurate to say they replicated glass, which was invented by Zeuss - Mr Lightning Bolts. Does that make it Greek?

It would make glass a Greek myth!
May The Voice be with you!
DavidMcC
 
Name: David McCulloch
Posts: 13807
Age: 63
Male

Country: United Kigdom
United Kingdom (uk)
Print view this post

Ads by Google


Re: Clever Romans

#8  Postby Alan C » Jul 15, 2017 8:37 am

Their concretes in general seem to last a bloody long time.
Lose it - it means go crazy, nuts, insane, bonzo, no longer in possession of one's faculties, three fries short of a happy meal, WACKO!! - Jack O'Neill
User avatar
Alan C
 
Posts: 1101
Age: 40
Male

New Zealand (nz)
Print view this post

Re: Clever Romans

#9  Postby UncertainSloth » Jul 15, 2017 8:57 am

Mazille wrote:Yeah, but what have the Romans ever done for us?


brought peace?
User avatar
UncertainSloth
 
Posts: 1613
Age: 44
Male

United Kingdom (uk)
Print view this post

Re: Clever Romans

#10  Postby Mazille » Jul 15, 2017 9:30 am

Oh, peace? SHUT UP!
- Pam.
- Yes?
- Get off the Pope.
User avatar
Mazille
RS Donator
 
Posts: 19174
Age: 31
Male

Austria (at)
Print view this post

Re: Clever Romans

#11  Postby DavidMcC » Jul 15, 2017 3:19 pm

Alan C wrote:Their concretes in general seem to last a bloody long time.

What makes you think that modern concretes are any different from that (except, of course, badly made ones, with a poor composition).
May The Voice be with you!
DavidMcC
 
Name: David McCulloch
Posts: 13807
Age: 63
Male

Country: United Kigdom
United Kingdom (uk)
Print view this post

Re: Clever Romans

#12  Postby tuco » Jul 15, 2017 3:48 pm

Romans probably discovered it by a chance rather than systematically as they had lots of time to observe ;)
tuco
 
Posts: 13275

Print view this post

Re: Clever Romans

#13  Postby LucidFlight » Jul 16, 2017 2:13 am

DavidMcC wrote:
Alan C wrote:Their concretes in general seem to last a bloody long time.

What makes you think that modern concretes are any different from that (except, of course, badly made ones, with a poor composition).

The article mentions volcanic ash. Could that be something to do with it? :ask:
OFFICIAL MEMBER: QUANTUM CONSTRUCTOR CONSCIOUSNESS QUALIA KOALA COLLECTIVE.
User avatar
LucidFlight
RS Donator
 
Name: Bob Bobson
Posts: 9039
Male

Country: USA
United States (us)
Print view this post

Re: Clever Romans

#14  Postby Matt_B » Jul 16, 2017 2:37 am

Roman concrete is made from tuff, a volcanic rock that is fairly common in Italy but rare in much of the world. They had to use inferior substitutes in the far flung parts of the empire though.

Modern concrete is made from Portland cement, which can be manufactured from far more abundant limestone and clay, pretty much anywhere in the world. Unlike the tuff, it's chemically active, and reinforced concrete in particular suffers from corrosion of the metal rods, limiting its lifetime.
User avatar
Matt_B
 
Posts: 4004
Male

Country: Australia
Australia (au)
Print view this post

Re: Clever Romans

#15  Postby LucidFlight » Jul 16, 2017 2:45 am

Ah, right. So, then, their poorest concretes might have been on par with our modern concretes. :think: Hah! So they aren't the engineering geniuses everyone makes them out to be. They just got lucky living near volcanoes. (Except for those Pompeii dudes.)
OFFICIAL MEMBER: QUANTUM CONSTRUCTOR CONSCIOUSNESS QUALIA KOALA COLLECTIVE.
User avatar
LucidFlight
RS Donator
 
Name: Bob Bobson
Posts: 9039
Male

Country: USA
United States (us)
Print view this post

Ads by Google


Re: Clever Romans

#16  Postby crank » Jul 16, 2017 5:36 am

Their product was meant for the sea, that's why they called it sea meant. It helps if you're from Texas and other southern parts if you want to pronounce that properly.
“When you're born into this world, you're given a ticket to the freak show. If you're born in America you get a front row seat.”
-George Carlin, who died 2008. Ha, now we have human centipedes running the place
User avatar
crank
RS Donator
 
Name: Sick & Tired
Posts: 9966
Age: 2
Male

Country: 2nd miasma on the left
Pitcairn (pn)
Print view this post

Re: Clever Romans

#17  Postby Fenrir » Jul 16, 2017 8:32 am

crank wrote:Their product was meant for the sea, that's why they called it sea meant. It helps if you're from Texas and other southern parts if you want to pronounce that properly.

And if course they were known for their dodgy business dealings with Mediterranean countries. A common scam involved selling large amounts of gravel to Crete (suckers) at extortionate prices and hence to con Crete.
Religion: it only fails when you test it.-Thunderf00t.
User avatar
Fenrir
 
Posts: 2890
Male

Country: Australia
South Georgia and the South Sandwich Islands (gs)
Print view this post

Re: Clever Romans

#18  Postby tuco » Jul 16, 2017 7:52 pm

You two .. are Romans? ;)
tuco
 
Posts: 13275

Print view this post

Re: Clever Romans

#19  Postby rplatell » Jul 16, 2017 8:53 pm

Fenrir wrote:
crank wrote:Their product was meant for the sea, that's why they called it sea meant. It helps if you're from Texas and other southern parts if you want to pronounce that properly.

And if course they were known for their dodgy business dealings with Mediterranean countries. A common scam involved selling large amounts of gravel to Crete (suckers) at extortionate prices and hence to con Crete.


uh-oh looks like the start of another PUN-ic war.
User avatar
rplatell
 
Posts: 586
Male

Australia (au)
Print view this post

Re: Clever Romans

#20  Postby tuco » Jul 16, 2017 9:00 pm

Damn, I cant do these! And I'd pay gold press latinum for being able to.
tuco
 
Posts: 13275

Print view this post

Next

Return to Technical Design and Engineering.

Who is online

Users viewing this topic: No registered users and 1 guest