{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,23]],"date-time":"2026-04-23T04:00:55Z","timestamp":1776916855622,"version":"3.51.2"},"reference-count":12,"publisher":"Trans Tech Publications, Ltd.","license":[{"start":{"date-parts":[[2015,7,6]],"date-time":"2015-07-06T00:00:00Z","timestamp":1436140800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.scientific.net\/PolicyAndEthics\/PublishingPolicies"},{"start":{"date-parts":[[2015,7,6]],"date-time":"2015-07-06T00:00:00Z","timestamp":1436140800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.scientific.net\/license\/TDM_Licenser.pdf"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MSF"],"abstract":"<jats:p>The powder materials containing active SiO<jats:sub>2<\/jats:sub>, which are used as pozzolanic active materials in cement mixtures, can be classified in consideration of their pozzolana activity, particle size or reactivity. In this paper, several types of metakaoline are studied using Frattini and modified Chapelle test for pozzolanic activity determination. The particle size analysis is measured using the laser diffraction analyser and the differences in the chemical composition are characterized by FTIR spectroscopy. The obtained data show influence of particle size and chemical composition of tested powders on their pozzolanic activity, which corresponds with the results of Frattini and modified Chapelle test.<\/jats:p>","DOI":"10.4028\/www.scientific.net\/msf.824.33","type":"journal-article","created":{"date-parts":[[2015,7,6]],"date-time":"2015-07-06T08:36:59Z","timestamp":1436171819000},"page":"33-38","source":"Crossref","is-referenced-by-count":13,"title":["Classification of a-SiO&lt;sub&gt;2&lt;\/sub&gt; Rich Materials"],"prefix":"10.4028","volume":"824","author":[{"given":"Martina","family":"Z\u00e1lesk\u00e1","sequence":"first","affiliation":[{"name":"Czech Technical University in Prague"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Milena","family":"Pavl\u00edkov\u00e1","sequence":"additional","affiliation":[{"name":"Czech Technical University in Prague"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0857-161X","authenticated-orcid":false,"given":"Zby\u0161ek","family":"Pavl\u00edk","sequence":"additional","affiliation":[{"name":"Czech Technical University in Prague"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"2457","published-online":{"date-parts":[[2015,7,6]]},"reference":[{"key":"318054","unstructured":"\u010cSN EN 197-1 Cement - Part 1: Composition, specifications and conformity criteria for common cements."},{"key":"318055","doi-asserted-by":"publisher","unstructured":"T. Melichar, J. Byd\u017eovsk\u00fd, E. Venhodov\u00e1, Analyzing of alternative raw materials for production of cement- bonded particleboards, Adv. Mater. Res. 923 (2014), 108-111.","DOI":"10.4028\/www.scientific.net\/amr.923.108"},{"key":"318056","unstructured":"M. Keppert, P. Reiterman, Z. Pavl\u00edk, M. Pavl\u00edkov\u00e1, M. Jerman, R. \u010cern\u00fd, Municipal solid waste incineration ashes and their potential for partial replacement of Portland cement and fine aggregates in concrete, Cem. Wapno Beton 15 (2010) 187-193."},{"key":"318057","doi-asserted-by":"publisher","unstructured":"A. Tironi, M.A. Trezza, A.N. Scian, E.F. Irassar, Assessment of pozzolanic activity of different calcined clays, Cem. Concr. Compos. 37 (2013) 319-327.","DOI":"10.1016\/j.cemconcomp.2013.01.002"},{"key":"318058","doi-asserted-by":"publisher","unstructured":"S. Donatello, M. Tyrer, C.R. Cheeseman, Comparison of test methods to assess pozzolanic activity, Cem. Concr. 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Pavl\u00edkov\u00e1, J. \u017dum\u00e1r, R. \u010cern\u00fd, Experimental Investigation of Lime-Based Plaster Containing PCM for Enhancing the Heat-Storage Capacity of Building Envelopes, Int. J. Thermophys. 35 (2014) 767-782.","DOI":"10.1007\/s10765-013-1550-8"},{"key":"318063","unstructured":"\u010cSN EN 196-5 Methods of testing cement - Part 5: Pozzolanity test for pozzolanic cement."},{"key":"318064","unstructured":"NF P 18-513: 2009 Pozzolanic Addition for Concrete - Metakaolin. Definitions, Specifications and Conformity Criteria. Annex A."},{"key":"318065","unstructured":"M. Raverdy, F. Brivot, A.M. Paill\u00e9re, R. Dron, R. Appreciation de l'actvite pouzzolanique dos constituents secondaires, 7th International Congress on the Chemistry of Cement 3 (1980) 36-41."}],"container-title":["Materials Science Forum"],"original-title":[],"link":[{"URL":"https:\/\/www.scientific.net\/MSF.824.33.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,4,8]],"date-time":"2024-04-08T20:05:39Z","timestamp":1712606739000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.scientific.net\/MSF.824.33"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2015,7,6]]},"references-count":12,"URL":"https:\/\/doi.org\/10.4028\/www.scientific.net\/msf.824.33","relation":{},"ISSN":["1662-9752"],"issn-type":[{"value":"1662-9752","type":"electronic"}],"subject":[],"published":{"date-parts":[[2015,7,6]]}}}