metakaolin – Geopolymer Institute https://www.geopolymer.org Promoting the geopolymer science since 1979 Thu, 16 May 2019 07:03:41 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 #26 Standardized Method in Testing Commercial Metakaolins for Geopolymer Formulations. https://www.geopolymer.org/news/26-standardized-method-in-testing-commercial-metakaolins-for-geopolymer-formulations/ Tue, 05 Mar 2019 05:50:33 +0000 https://www.geopolymer.org/?p=4856 Technical Paper #26

published May 2019: DOI: 10.13140/RG.2.2.18109.10727/1

Standardized Method in Testing Commercial Metakaolins for Geopolymer Formulations.

Ralph Davidovits, Christine Pelegris and Joseph Davidovits.

The majority of the technical and scientific information pertaining to commercial calcined kaolinitic clays of the type metakaolins (MK) are currently focusing on the pozzolanic reactivity and replacement of Portland cement. It is not adapted for geopolymerization and sometimes irrelevant. The aim of the present paper is to propose a customized test on metakaolins for geopolymer formulations. Standard commercialized Na and K silicate solutions with MR=1.7 were mixed with eleven commercial metakaolin samples (MK) and hardened at 80 °C. The temperature increase was recorded and the cumulative exothermal peak temperature is used to characterize very precisely the geopolymeric exothermicity of each commercial MK. In the Geopolymer standardized method, the geopolymeric exothermicity is expressed as the time in minutes it takes to reach the exothermal peak and its temperature, namely from the fastest to the slowest commercial MK: Metaver SF (21 min., 103 °C) – Argical M1200 (22 min., 103 °C) – PowerPozz White (26 min., 103 °C) – MetaMax (27 min., 103 °C) – MK Argeco (30 min., 93 °C) – Argical M1000 (34 min., 106 °C) – MK Pink (34 min., 106°C) – Metaver I (45 min., 100 °C) – Metaver M (50 min., 93 °C) – Metaver N (>60 min., 82 °C) – MK 1300 (>60 min., 80 °C).

Click here to see how to download paper nr 26 MK-testing.pdf.

]]> First supplier of Geopolymer raw material https://www.geopolymer.org/news/first-supplier-of-geopolymer-raw-material/ Tue, 27 Oct 2009 17:19:27 +0000 http://www.geopolymer.org/?p=562 We have a first supplier for metakaolin MK-750, coined ARGICAL M1200S, specially designed for geopolymer application. It is the French kaolin clay company AGS, member of the Imerys group.

Go to

www.ags-mineraux.com.

Search for Products and choose Specialties.

To get the technical sheet (presently in French), go to the page Building Materials on the left margin and click on 1200S.pdf at the bottom of the page.

The ARGICAL brand is used for geopolymer resin, namely that of the (K,Na)-PSS, (K,Na)-poly(sialate-siloxo) type, and other high-tech applications.

Professor Joseph Davidovits

]]>