作者
乌克兰尼娜,塞尔达尔内文
文章摘要
由于木材生物质产生的灰烬大部分最终进入垃圾填埋场,因此最近的研究集中在寻找其经济和环境附加值作为建筑行业潜在的新原材料。然而,对于在建筑中以工业规模使用的木灰,必须确定其适当储存的策略。 WBA 的正确储存对于确保水泥基复合材料应用的质量控制非常重要。这项工作调查了从克罗地亚五个不同发电厂收集的木材生物质灰 (WBA) 的老化及其对水泥基复合材料性能的影响。本文使用热重分析 (TGA)、粉末 X 射线衍射 (XRD)、等温量热法以及初凝和终凝时间,研究了 WBA 和水泥浆在不同老化时间(最多一年)下的情况。结果表明,WBA 在密闭和敞口容器中的储存分别导致主要游离石灰和方镁石的碳化和水化,这影响了 WBA 水泥浆体的反应性和凝结时间。
文章关键词
木材生物质灰;水泥基材料;水泥部分置换;老化;补水;碳化
参考文献
[1] Calderón, C.; Gauthier, G.; Jossart, J.-M. AEBIOM Statistical Report; European Bioenergy Outlook: Brussels, Belgium, 2016. [2] Eurostat Statistics Explained Renewable Energy Statistics. Available online: http://ec.europa.eu/eurostat/statistics-explained/
index.php/Renewable_energy_statistics
[3] European Statistics Energy from Renewable Sources. Available online: https://ec.europa.eu/eurostat/web/energy/data/shares
[4] Sikkema, R.; Proskurina, S.; Banja, M.; Vakkilainen, E. How can solid biomass contribute to the EU’s renewable energy targets in 2020,2030 and what are the GHG drivers and safeguards in energy- and forestry sectors? Renew. Energy 2021, 165, 758–772. [5] Obernberger, I.; Supancic, K. Possibilities of Ash Utilisation from Biomass Combustion Plants. In Proceedings of the 17th European Biomass Conference & Exhibition, Hamburg, Germany, 29 June–3 July 2009. [6] Doudart de la Grée, G.C.H.; Florea, M.V.A.; Keulen, A.; Brouwers, H.J.H. Contaminated biomass fly ashes—Characterization and
treatment optimization for reuse as building materials. Waste Manag. 2016, 49, 96–109. [7] Carevi´c, I.; Serdar, M.; Štirmer, N.; Ukrainczyk, N. Preliminary screening of wood biomass ashes for partial resources replacements in
cementitious materials. J. Clean. Prod. 2019, 229, 1045–1064. [8] Sigvardsen, N.M.; Kirkelund, G.M.; Jensen, P.E.; Geiker, M.R.; Ottosen, L.M. Impact of production parameters on physiochemical characteristics of wood ash for possible utilisation in cement-based materials. Resour. Conserv. Recycl. 2019, 145, 230–240. [9] Zagvozda, M.; Dimter, S.; Rukavina, T.; Grubeša, I.N. Possibilities of bioash application in road building. Gradevinar ¯ 2018, 70, 393–402. [10] Ukrainczyk, N.; Koenders, E.A.B.; Stirmer, N. Transformation of Wood Ash Waste into Construction Materials. In Proceedings of the 1st International Conference on Construction Materials for Sustainable Future, Zadar, Croatia, 19–21 April 2017; pp. 101–108. [11] Omran, A.; Soliman, N.; Xie, A.; Davidenko, T.; Tagnit-hamou, A. Field trials with concrete incorporating biomass-fly ash. Constr. Build. Mater. 2018, 186, 660–669.
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