{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,3,31]],"date-time":"2022-03-31T21:29:49Z","timestamp":1648762189678},"reference-count":4,"publisher":"EDP Sciences","license":[{"start":{"date-parts":[[2019,2,22]],"date-time":"2019-02-22T00:00:00Z","timestamp":1550793600000},"content-version":"vor","delay-in-days":52,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["MATEC Web Conf."],"published-print":{"date-parts":[[2019]]},"abstract":"<jats:p>Generally, alkali-activated materials (aka geopolymers) present good behaviour at high temperatures, but previous studies of geopolymers under elevated temperatures are, in most cases, focused on metakaolin or fly ash based geopolymers, making the information on geopolymers with mining waste mud almost inexistent. In this paper, were analysed geopolymers with different combinations of mining waste mud, waste glass powder, metakaolin and expanded cork in a total of 15 different mixtures using sodium hydroxide and sodium silicate as alkaline activators. Materials particle size used is under 500 \u03bcm for mining waste mud, waste glass powder. Some mixtures also included expanded granulated cork with particle size between 2 to 4 mm. Ten samples with 40 \u00d7 40 \u00d7 40 mm dimensions were used for the compression test, one sample for the TGA test, and one cube (100 \u00d7 100 \u00d7 60 mm) with a frustoconical hole (50 mm deep) and a 100 \u00d7 100 \u00d7 25 mm cover, for the cup test. All the mixtures were cured for 24h at a temperature of 60 \u00b0C before being demoulded, and left at room temperature until they reach 7 days to be tested. On the 7th day, of each mixture, samples were placed in a static furnace before the compression test submitted to a temperature of 800 \u00b0C during 2h. Then, the compression test was performed and the values before and after exposure to high temperatures were compared. Were recorded maximum gains of 724% and maximum losses of 100% in the compressive strength. This preliminary result shows the potentials of mining waste alkali-activated materials for elevated temperatures applications.<\/jats:p>","DOI":"10.1051\/matecconf\/201927403001","type":"journal-article","created":{"date-parts":[[2019,2,22]],"date-time":"2019-02-22T09:17:51Z","timestamp":1550827071000},"page":"03001","source":"Crossref","is-referenced-by-count":0,"title":["Effect of elevated temperatures on alkali-activated tungsten mining waste based materials"],"prefix":"10.1051","volume":"274","author":[{"given":"Rafael","family":"Silva-Figueiredo","sequence":"first","affiliation":[]},{"given":"Jo\u00e3o","family":"Castro-Gomes","sequence":"additional","affiliation":[]}],"member":"250","published-online":{"date-parts":[[2019,2,22]]},"reference":[{"key":"R1","doi-asserted-by":"crossref","unstructured":"Davidovits J., \"Geopolymers: inorganic polymeric new materials,\" J Therm Anal, 1991.","DOI":"10.1007\/BF01912193"},{"key":"R2","unstructured":"Kong D. L. Y., Sanjayan J. G., and Sagoecrentsil K., \"Comparative performance of geopolymers made with metakaolin and fly ash after exposure to elevated temperatures,\" vol. 37, pp. 1583-1589, 2007."},{"issue":"2","key":"R3","doi-asserted-by":"crossref","first-page":"334","DOI":"10.1016\/j.cemconres.2009.10.017","volume":"40","author":"Kong","year":"2010","journal-title":"Cem. Concr. Res."},{"key":"R4","unstructured":"Ferna P. D. \u00c6. A. and Van Deventer G. C. L. \u00c6. A. P. \u00c6. J. S. J., \"Geopolymer technology : the current state of the art,\" no. 4, pp. 2917-2933, 2007."}],"container-title":["MATEC Web of Conferences"],"original-title":[],"link":[{"URL":"https:\/\/www.matec-conferences.org\/10.1051\/matecconf\/201927403001\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T20:41:20Z","timestamp":1588106480000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.matec-conferences.org\/10.1051\/matecconf\/201927403001"}},"subtitle":[],"editor":[{"given":"J.","family":"Castro-Gomes","sequence":"first","affiliation":[]},{"given":"X.","family":"Zhou","sequence":"additional","affiliation":[]},{"given":"J.","family":"Dur\u00e1n-Su\u00e1rez","sequence":"additional","affiliation":[]},{"given":"C.","family":"Sangiorgi","sequence":"additional","affiliation":[]},{"given":"M.","family":"G\u00f3rski","sequence":"additional","affiliation":[]},{"given":"S.","family":"Yang","sequence":"additional","affiliation":[]}],"short-title":[],"issued":{"date-parts":[[2019]]},"references-count":4,"alternative-id":["matecconf_ricon17_03001"],"URL":"https:\/\/doi.org\/10.1051\/matecconf\/201927403001","relation":{},"ISSN":["2261-236X"],"issn-type":[{"value":"2261-236X","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019]]}}}