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SUMMARY:IMX Talks - Breaking through the concrete decarbonisation paradigm
  with fundamental cement science and calcined clays
DTSTART:20240531T110000
DTEND:20240531T120000
DTSTAMP:20260404T012031Z
UID:d1f1cfe4766e3cb515ad099f35a31708ae1ab0d708ebf03d9d84f864
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Franco Zunino ETHZ - The UGC Team\nConcrete stands as the 
 predominant construction material\, serving as a cornerstone in modern soc
 iety. However\, the production of portland cement\, the integral binder in
  concrete\, contributes significantly to the global carbon footprint\, con
 stituting approximately 8% of annual manmade CO2 emissions. To address thi
 s pressing environmental concern\, the adoption of cement substitution mat
 erials like fly ash\, blast furnace slag\, ground limestone\, and natural 
 pozzolans has been recognized as an effective strategy. Despite their effi
 cacy\, the dwindling availability of some of these materials poses a chall
 enge.\n\nLimestone calcined clay cements (LC3) emerge as a promising solut
 ion\, representing a family of blended cements that incorporate limestone 
 and calcined kaolinitic clays\, replacing 50%+ of the carbon-intensive cli
 nker. Understanding the intricate mechanisms governing LC3 reactivity is p
 ivotal for optimizing and facilitating the global deployment of this techn
 ology. Within LC3\, a series of coupled chemical reactions involving metak
 aolin and calcium hydroxide lead to the formation of C-A-S-H and carboalum
 inates\, effectively reducing porosity while enhancing strength and durabi
 lity. Pioneering studies utilizing solid-state NMR and time resolved miner
 alogical characterization shed light on the nascent reactivity of metakaol
 in in cementitious systems. n conjunction with emerging insights into the 
 surface reactivity of these materials\, the foundational science of cement
  will persist in influencing the trajectory of the industry's decarbonizat
 ion efforts over the next five decades. This will be achieved through the 
 utilization of innovative\, sophisticated characterization techniques and 
 the comprehensive elucidation of the fundamental hydration mechanisms at p
 lay.\n\nLeveraging concrete mixture design optimization serves as an addit
 ional tool to diminish the overall portland cement consumption. The synerg
 y between cement chemistry and concrete mixture design engineering present
 s complementary avenues that can significantly contribute to mitigating th
 e overall environmental impact of the construction industry. This multifac
 eted approach underscores the importance of advancing our understanding of
  the fundamental processes driving sustainable innovations in the realm of
  concrete technology.\n 
LOCATION:CM 1 2 https://plan.epfl.ch/?room==CM%201%202
STATUS:CONFIRMED
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