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Study on Restoration Materials for Historical Silty Earthen Sites Based on Lime and Starch Ether
Advances in Materials Science and Engineering ( IF 2.098 ) Pub Date : 2020-06-28 , DOI: 10.1155/2020/2850780
Dequan Kong 1 , Jianxun Chen 2 , Rong Wan 1, 3 , Hongli Liu 1
Affiliation  

The relics built with soil are called earthen archaeological sites. Many silt earthen sites exposed to natural environment get seriously damaged and thus require urgent restoration with suitable materials. Previously, lime and glutinous rice slurry were used in the construction of earthen sites. However, lime is usually used in clay, and glutinous rice pulp is difficult to prepare and use on a large scale. Therefore, in this study, starch ether was selected to replace glutinous rice pulp. Lime and starch ether were added to silt as single or double additives, respectively, to prepare the corresponding single-mixed and multiple-mixed modified soil samples. Furthermore, the direct shear test and compression test were carried out and the optimum content was determined. The strength and durability of optimum modified materials were compared with those of the original site soil. When the lime content was 9% or the concentration of starch ether solution was 5%, the shear strength and compression resistance ability of single-mixed modified soil were improved significantly. When lime content was 6% and starch ether solution was 5%, the strength of multiple-mixed modified soil was the best, and the maximum cohesion and internal friction angle were 51.1 and 3.37% higher than those of single-mixed soil, respectively. The strength and durability of the optimum modified soil were similar to or higher than those of the site soil. Thus, it is feasible and effective to use lime together with starch ether as restoration material for silty earthen sites.

中文翻译:

基于石灰和淀粉醚的粉质历史古迹遗址修复材料研究

用土壤建造的文物被称为土考古遗址。许多暴露在自然环境中的粉土站点受到了严重破坏,因此需要使用合适的材料进行紧急修复。以前,石灰和糯米泥浆被用于土方的建设。然而,石灰通常用于粘土中,并且糯米浆难以制备和大规模使用。因此,在这项研究中,选择淀粉醚代替糯米浆。将石灰和淀粉醚分别作为一种或两种添加剂添加到淤泥中,以制备相应的单混合和多混合改性土壤样品。此外,进行了直接剪切试验和压缩试验,并确定了最佳含量。将最佳改性材料的强度和耐久性与原始场地土壤的强度和耐久性进行了比较。当石灰含量为9%或淀粉醚溶液的浓度为5%时,单掺改性土的抗剪强度和抗压能力显着提高。当石灰含量为6%,淀粉醚溶液为5%时,改性土的多次混合强度最好,最大内聚力和内摩擦角分别比单一土高51.1和3.37%。最佳改性土壤的强度和耐久性与现场土壤相似或更高。因此,将石灰与淀粉醚一起用作粉质土点的修复材料是可行和有效的。当石灰含量为9%或淀粉醚溶液的浓度为5%时,单掺改性土的抗剪强度和抗压能力显着提高。当石灰含量为6%,淀粉醚溶液为5%时,改性土的多次混合强度最好,最大内聚力和内摩擦角分别比单一土高51.1和3.37%。最佳改性土壤的强度和耐久性与现场土壤相似或更高。因此,将石灰与淀粉醚一起用作粉质土点的修复材料是可行和有效的。当石灰含量为9%或淀粉醚溶液的浓度为5%时,单掺改性土的抗剪强度和抗压能力显着提高。当石灰含量为6%,淀粉醚溶液为5%时,改性土的多次混合强度最好,最大内聚力和内摩擦角分别比单一土高51.1和3.37%。最佳改性土壤的强度和耐久性与现场土壤相似或更高。因此,将石灰与淀粉醚一起用作粉质土点的修复材料是可行和有效的。当石灰含量为6%,淀粉醚溶液为5%时,改性土的多次混合强度最好,最大内聚力和内摩擦角分别比单一土高51.1和3.37%。最佳改性土壤的强度和耐久性与现场土壤相似或更高。因此,将石灰与淀粉醚一起用作粉质土点的修复材料是可行和有效的。当石灰含量为6%,淀粉醚溶液为5%时,改性土的多次混合强度最好,最大内聚力和内摩擦角分别比单一土高51.1和3.37%。最佳改性土壤的强度和耐久性与现场土壤相似或更高。因此,将石灰与淀粉醚一起用作粉质土点的修复材料是可行和有效的。
更新日期:2020-06-28
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