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Study on Effect of Chemical Composition of Geopolymer to Improve Sludge by Using Fiber Materials

机译：纤维材料对地质聚合物化学成分改善污泥效果的研究

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Geopolymer, an environmentally friendly alternative to ordinary Portland cement, is currently receiving increased attention in academic and industrial communities for its ability to produce fly ash based geopolymer material in several applications. Geopolymer material is known as an inorganic-polymer composite and is synthesized by the aluminosilicate compound materials with alkali hydroxide and alkali silicate. Current researches on geopolymer are mainly focused on geopolymer concrete properties such as mechanical properties, paste properties and durability properties in laboratory. However, few specific publications are available concerning the feasibility of geopolymer modified soft soil (sludge) in the actual landslide area which is mainly due to earthquake and heavy rainfall. This paper presents the details of studies carried out on strength of sludge improved with various geopolymer contents. The composition of sludge is 60% silt, 40% clay and water content is 70%. Sodium hydroxide (NaOH) 12 Molar and sodium silicate solution (Na_(2)SiO_(3)) were prepared. The test specimens were made of 50 x 100 mm cylindrical mold and 20~(o)C temperature curing condition. By adding paper debris, the specimens were made immediately after mixing by compaction, in contrast without adding paper debris, after 24 hours the specimens were made with same conditions to compare. Compressive strength after 12 and 18 hours was measured. The results showed that the modified soil with paper satisfied the target (125kN/m~(2)) with geopolymer content nearly 9% after 12 hours and all of them obtained enough strength after 18 hours. Moreover, modified soil without paper reached target after 12 and 18 hours but revealed lower strain performance.
机译：地质聚合物是普通波特兰水泥的一种环保替代品，由于其在多种应用中能够生产飞灰基地质聚合物材料的能力，目前在学术界和工业界受到越来越多的关注。地质聚合物材料被称为无机聚合物复合材料，是由铝硅酸盐化合物材料与碱金属氢氧化物和碱金属硅酸盐合成的。目前对地聚合物的研究主要集中在地聚合物的混凝土性能上，例如实验室的机械性能，糊状性能和耐久性。但是，关于在实际滑坡区域中使用地质聚合物改性的软土（淤泥）的可行性的具体出版物很少，这主要是由于地震和暴雨造成的。本文介绍了有关各种地质聚合物含量提高的污泥强度研究的细节。污泥的组成为60％的淤泥，40％的粘土和70％的水含量。制备氢氧化钠（NaOH）12摩尔和硅酸钠溶液（Na_（2）SiO_（3））。测试样品由50 x 100 mm的圆柱形模具和20°（o）C温度固化条件制成。通过添加纸屑，在压实混合后立即制成样品，而没有添加纸屑，则在24小时后以相同条件制作样品以进行比较。测量12和18小时后的抗压强度。结果表明：纸改性土在12小时后达到了目标值（125kN / m〜（2）），地聚合物含量接近9％，在18小时后均获得了足够的强度。此外，没有纸的改良土壤在12和18小时后达到目标，但显示出较低的应变性能。

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