改善土（improved soil）的工程地质性质，以达到工程活动目的的措施。土与工程建筑物直接相关的工程地质性质，主要为透水性和力学性能（可压缩性和抗破坏性），而它们则取决于土的物质成分和结构特点。因此，土质改良实质上是通过改变土的成分和结构，达到改善性质的目的。 改良土分为物理改良土和化学改良土，物理改良是通过掺入碎石等，改变其粒径大小的改良，化学改良是通过掺入石灰、水泥、粉煤灰等固化剂材料以提高工程性能的土体。
文章详细信息 关键词： 改良土;;路基填料;;压实系数;;无侧限抗压强度 [gap=454]Keywords: improved soil,roadbed filler,compaction coefficient,unconfined compression strength
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...bu.com 中国论文网 关键词:路基填料；改良土；CBR试验；正交分析 [gap=1075]Key words: embankment filler; the improved soils; CBR; orthogonal experiment method ...
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改良土地税 development land tax
改良土壤结构 soil conditioning ; improve soil texture
改良土壤 soil improvement ; [土壤] improve soil
人工改良土 artificially improved soil
改良土壤树种 [土壤] [林] soil improving tree species
石灰改良土壤 Lime Modified Soil
改良土壤学 [土壤] improvement pedology
软岩改良土 soft rock improved with cement
森林改良土壤 amelioration with protection forest
Besides, the disadvantages that degree of compaction controls compaction and the excellence that void ratio controls compaction are summarized. For lime-improved-soil studied in this paper, it is suggested that void ratio controls compaction of roadbed.
对于本文所研究的石灰改良土，提出了采用空隙率控制方法来控制路基的填筑压实的建议。
参考来源 - 湖区公路过湿土的改良技术研究Taking the construction of the roadbed of Luoyang-Zhanjiang Railway as the example, this paper introduces the construction method of using the improved soil in the bottom layer and lower road embankment.
以洛湛铁路路基的施工为例,介绍了改良土用于底层及下部路堤的施工方法。
参考来源 - 期刊学术社区·2,447,543篇论文数据，部分数据来源于NoteExpress
改良土是高速、重载铁路路基建设中重要的填筑材料。
To guarantee the safety of train, its very important to study the cyclic fatigue of improving soil.
水泥改良土是高速铁路路基工程中广泛使用的一种重要填料。
The cement improved soil is a kind of important fill material used widely in construction of railway subgrade.
因此，只有依据剪切波速才能评价各种条件下石灰改良土强度特性的差异。
Therefore, the compressive strength difference of lime-soils can only be evaluated based on the shear wave velocity.
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