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Physicochemical Characterization of Geopolymer Binders and Foams Made from Tunisian Clay

机译:突尼斯粘土制成的地缘聚合物粘合剂和泡沫的物理化学特征

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摘要

Illito-kaolinitic clay rich in hematite from south Tunisia was investigated in view of producing geopolymer materials. Geopolymers with two different densities were elaborated: cement and foam. The effects of activator concentrations on compressive strength, water absorption (durability), open porosity, and bulk density of geopolymers cement were examined, in order to assure optimal geopolymerization conditions. Geopolymer cements aged 28 days with optimum performances were achieved for 13 M of alkaline solution concentration. At these conditions, the compressive strength of prepared geopolymer reaches 27.8 MPa. The addition of silica fume to reactant geopolymer mixture induces modification of geopolymer density and decrease in the compressive strength of the final product. Geopolymer materials based on calcined Tunisian clay can be suggested as sustainable and cost-effective cement that may be applied to alternate Portland cement in many construction applications.
机译:考虑到生产地缘聚合物材料,研究了富含南突尼斯血蒿的Illito-Kaolinitic粘土。阐述了两种不同密度的地缘聚合物:水泥和泡沫。研究了活化剂浓度对抗压强度,吸水(耐久性),开放孔隙率和散装密度的影响,以确保最佳的地质化条件。为13米碱溶液浓度达到了28天28天的地质聚合物水泥。在这些条件下,制备的地质聚合物的抗压强度达到27.8MPa。将二氧化硅烟雾添加到反应物地质混合物中,诱导岩土密度的改性并降低最终产物的抗压强度。基于煅烧的突尼斯粘土的地缘聚合物材料可以建议可持续和经济高效的水泥,可应用于许多施工应用中的替代波特兰水泥。

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