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Naturtalentene English 2014

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by

Jan Magnus Røsbjørgen

on 15 May 2014

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Transcript of Naturtalentene English 2014

Naturtalentene
Background
Naturtalentene - a private team from Ler, a beautiful place in the countryside of Trondheim.
Ler - a quick clay exposed place.
Competed two times before in Trondheim.
Anders and Ragnhild - our fantastic coaches
Description of problem
Quick clay
A special type of clay- it is more like liquid when it is exposed to tremors.
Dangerous- a lot of mass destruction.
Happens because of tremors in the earth.
Located between 0.5 to 20 m below the ground, from sea level to about 180 m, the marine limit.
Source: http://www.ngu.no
Source: no.wikipedia.org, interview with Haakon Kulberg from Multiconsult, and interview with Jan Henrik Dahl from Melhus comunity
Which additives are most cost effective and perform best in
reversing the process of quick clay?
How did the
quick clay arise?
The ice-age has a lot to do with the creation of the quick clay.
Pulled the earth down.
The ice disappeared- the salt was washed out from the clay.
A little push- the quick clay becomes liquid.
Climate changes-
several slides?
The climate changes modify the world.
The salt is washed out of the clay.
Trondheim- media coverage of quick clay in Trondheim.
Half of Trondheim can be flooded!
Our marketing
News report in our local newspaper, Trønderbladet.
Presentations for our sponsors and families.
Interview on the radio- NRK (The national broadcaster)
Procedure
Weighed 100 grams solid quick clay.
Shaking makes quick clay more liquid.
Mixed 2 to 10 grams of various additives: salt (NaCl), potato starch, corn starch, magnesium (MgCl2)-, potassium (KCl)-and calcium chloride (CaCl2).
The result
Source for the prices: www.sigmaaldrich.com and www.matnet.no


Quick clay
_
Conclusion
Can use machines to put salt in the ground.
During a possible landslide the salt will become mixed with the quick clay.
Reduces the speed of the quick clay landslide - and the extent of the devastation.
Source: www.adressa.no
Drawn by: Tormod Vistnes
Source for the report: www.tronderbladet.no
Source: www.ngu.no, www.geo365.no and www.wikipedia.com
KCl and CaCl2 have best performance.
Salt (NaCl)- most cost effective.
Idea
Source for the picture: www.google.no
Drawen by: Tormod Vistnes
Which additives are most cost effective and perform best in
reversing the process of quick clay?
Description of problem
Trondheim
N= no reaction
S= small reaction
M=moderate reaction
H= High reaction
and thanks to all our sponsors
Thanks for your attention
Full transcript