SiO2/Al2O3和SiO2/Na2O的摩尔模对地聚合物材料性质的影响

IF 0.5 4区 工程技术 Q4 CONSTRUCTION & BUILDING TECHNOLOGY
Szymon Sikora, Karol Skowera, Mariusz Hynowski, Z. Rusin
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引用次数: 2

摘要

建筑业向大气中排放的二氧化碳约占全球的37%。因此,考虑到不断发展的气候变化,减少建筑行业的气体排放尤为重要。因此,鉴于气候变化的进展,限制其排放和限制该部门其他温室气体的排放尤为重要。重要的是,新的建筑产品在其整个生命周期中对环境的影响较小,并且它们的生产已经与一次能源的使用脱钩。在这项工作中,选定的地聚合物材料的性能进行了测试。地聚合物是具有无定形微观结构的无机铝硅酸盐聚合物,在某些应用中可能是基于波特兰水泥的产品的替代品。本文对地聚合物砂浆的孔隙率、微观结构和力学强度等性能进行了比较。反应混合物的组成对这些性能的影响,由适当的SiO2/Al2O3和SiO2/Na2O摩尔比定义,也被定义。结果表明:随着反应混合物中SiO2与Al2O3含量的增加,孔隙率降低;从而获得更致密的微观结构和更高的机械强度。与硅酸钠[Na2SiO3]溶液相比,使用较高浓度的NaOH溶液也会产生类似的效果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Formation of geopolymeric materials properties depending on the molar modules of SiO2/Al2O3 and SiO2/Na2O
The construction sector is responsible for around 37% of global emissions of the carbon dioxide to the atmosphere. Therefore, reducing gas emissions, in this construction sector, is particularly important ,given the progressing climate change. For this reason, limiting its emissions and limiting the emission of other greenhouse gases in this sector, is of particular importance in view of the progress of climate change. It is important that new construction products have less impact on the environment during their entire life cycle, and their production has been decoupled from the use of primary energy. In this work, selected properties of geopolymeric materials were examined. Geopolymers are inorganic aluminosilicate polymers with an amorphous microstructure, which may be an alternative in certain applications, for products based on Portland cement. Here, the properties of geopolymer mortars, i.e. porosity, microstructure and mechanical strength, were compared. The influence of the composition of reaction mixture on these properties, defined by the appropriate SiO2/Al2O3 and SiO2/Na2O molar ratios, was also defined. The results show that increasing the content of SiO2 in relation to Al2O3 in the composition of the reaction mixture, reduces porosity. Thus, leading to a more compact microstructure and higher mechanical strength. A similar effect occurs when a higher NaOH solution concentration is used, in comparison to the sodium silicate [Na2SiO3] solution.
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来源期刊
Cement Wapno Beton
Cement Wapno Beton CONSTRUCTION & BUILDING TECHNOLOGY-MATERIALS SCIENCE, COMPOSITES
CiteScore
1.30
自引率
28.60%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Publisher of the scientific bimonthly of international circulation, entitled "Cement-Wapno-Beton" ["Cement-Lime-Concrete"], is the Fundacja Cement, Wapno, Beton [Foundation Cement, Lime, Concrete]. The periodical is dedicated to the issues concerning mineral setting materials and concrete. It is concerned with the publication of academic and research works from the field of chemistry and technology of building setting materials and concrete
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