Talk:Energetically modified cement

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This article was nominated for deletion. Please review the prior discussions if you are considering re-nomination:

keep, 12 May 2013, see discussion.
speedy keep (nomination withdrawn), 3 May 2013, see discussion.

Some more digging...

The 1999 paper "Kinetics of the hydration reactions in the cement paste with mechanochemically modified cement 29Si magic-angle-spinning NMR study", states

"Modern concrete technology requires further enhancement of the Portland cement-based binders due to increased building demands. New types of cements can be produced with milling-vibrating equipment by high intensive mechano-chemical treatment of the Portland cement with silica fume or other silicon-oxide-containing additives. This new product, called “energetically modified cement” (EMC), has a higher surface reactivity and better mechanical properties than ordinary Portland cement (OPC). Due to the mechanochemical activation a significant increase of strength development and ultimate strengths of EMC-mortars and concretes (up to 180 MPa) occurs. A reduction of porosity and an increase of durability also have been observed."

That article alone is cited FORTY ONE TIMES according just to SCOPUS. SEE HERE

That paper even caused a discourse leading to a formal reply: see here

Soooo.....this page was nearly deleted twice, and then extensively vandalized by a one-trick sockpuppet called "karl" in 2014, who even tried to convince others to change the name. Jesus! Not only was the EMC name invented in 1993, it received its EU EUREKA gold medal award in 1996 in Brussels, then the 1999 paper and by 2010 4.5 million cubic yards of concrete poured in US DOT projects. And still this page was somehow "controversial"? The only thing that is controverisal is the way in which the original authors were banned off of Wikipedia never to return.

I have to candidly suggest that those who were trying to kill it were either unable to command the expertise (and should not have been anywhere near it) or had an ulterior motive (as I am quite certain "Karl" did).

Summer 2023 Updates

I have added references to the 2023 mechanochemistry textbook "Colacino, Evelina; Garcia, Felipe (2023). Mechanochemistry and Emerging Technologies for Sustainable Chemical Manufacturing (1st ed.). Routledge. p. 162. ISBN 9780367775018."

I have removed Elfgren from the 2010 paper "An Industrially Proven Solution for Sustainable Pavements of High-Volume Pozzolan Concrete – Using Energetically Modified Cement, EMC (PDF). Washington DC, United States: Transportation Research Board of the National Academies." Elfgren is not a co-author and is merely a reviewer (the wiki citation system does not allow for such a differentiation). If anyone thinks Elfgren should be reinstated into the citation than please revert that change. 92.23.209.241 (talk) 09:24, 13 June 2023 (UTC)[reply]

Tying Enthalpy of Amorphisation into a silicates context

Over three years ago editors made reference to a thermodynamic explanation for "EMC Activation". While we have welcomed this addition, it was incomplete in our view (as EMC Cement)

Standard texts on HEBM do not provide any derived model for the enthalpy effects of amorphisation. Typically they deliver an enthalpy model that includes Enthalpy of amorphisation (i.e, $H_{A}$ ) but never take it elsewhere (because they are not describing the activation of silicates). However, journals on glass dynamics give a treatment for $H_{A}$ . Equally (and conversely) such "glass journals" only vaguely reference the possible effects of "milling".

Hence we have added from assorted monographs (duly referenced) excerpts that use equations reserved for glass to explain why amorphisation has an effect on reactivity as compared to crystalline structures. So this is simply putting the two together to give coherence between the two domains so that we can give additional insight into the term $H_{A}$

You will find this addition in the second paragraph of the section Physical Justification (Amorphisation), which we hope you will find useful.

Denizhan Baytuğ || EMC Cement Denslenovo (talk) 14:07, 6 November 2023 (UTC)[reply]

2024 Updates

To keep the page current, I have added a small section "Developments in 2024" in the major section "Production and field-usage". I have added a reference.

Denizhan Baytuğ || EMC Cement Denslenovo (talk) 11:37, 29 February 2024 (UTC)[reply]