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用夯筑方法建造的土遗址在公开展示之前需要对土遗址的本体进行修复和加固。通常采用合成树脂作为土遗址本体和表面处理的材料,但合成树脂作为加固材料存在着一系列的问题,如会降低土体强度及对构造造成破坏。本工作针对日本九州地区广泛分布的真砂土和火山灰土为材料修筑的土遗址修复工程,尝试运用石灰、糯米汁、桐油作为土遗址的修复材料。按照不同的配合比制作试验土样进行无侧限抗压、固结、干湿循环、冻融循环等试验。结果显示,添加了4%桐油和石灰的土样能够大幅度提高夯土的强度,且压缩性低、抗冻融性好,尤其能显著提高土样的抗干湿劣化的性能。建议在九州地区的土遗址修复和保护工程中运用。
Earthen sites built by ramming methods need to be rehabilitated and reinforced prior to their public display. Synthetic resin is often used as a material for ontology prophylactic and surface treatments. However, there are a number of problems with synthetic resins as reinforcing materials, such as reducing soil strength and causing damage to the structure. In this work, we will try to use lime, glutinous rice juice and tung oil as the repair materials for the earthen ruins repairing the earthen ruins repaired by the widely distributed real sand and volcanic ash in Kyushu, Japan. In accordance with the different proportions of test soil samples for unconfined compression, consolidation, wet-dry cycle, freeze-thaw cycles and other tests. The results show that soil samples with 4% tung oil and lime can greatly improve the strength of rammed earth with low compressibility and good resistance to freezing and thawing. In particular, it can significantly improve the resistance to dry-wet deterioration of soil samples. It is recommended to use it in the repair and protection of earth sites in Kyushu.