改良土问题是高速铁路路基的重要内容。
The problem of improved soil is important for high-speed railway subgrade.
干湿循环作用后改良土的强度衰减得到减缓。
The shear strength of the improved soil is reduced after drying-wetting cycle.
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.
结果表明：在动应力作用下，两种改良土的破坏均为脆性破坏；
Research results show that the failure styles of two kinds of cement-soil under dynamic load are brittle failures.
还可与被改良土层一起形成复合地基，改变原地基土的成分和结构。
Together with the improved soil a composite ground is formed, and the components and structure of the original -ground have been changed.
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.
通过室内试验，对水泥改良土的物理性质、应力-应变关系、强度特性、压缩特性进行了研究。
Based on indoor tests, the physical properties, stress-strain relationship, intensity behaviors and compressibility of the modified soil with cement are studied in the paper.
对素土和石灰改良土进行击实试验，研究了击实曲线、最大干密度和最优含水率随灰剂量的变化关系；
At the same time, the relationship of compaction curve, maximum dry densities, optimum water content and lime content are researched through the compaction tests.
含水量对改良土的工程性质影响很大，因而在工程施工中应使改良填料的含水量尽可能达到最优含水量。
The ratio containing water influences much largely for improved soils, so it should be keep at the optimal ratio during construction of engineering.
本文还通过在改良土中置换一定比例的砂土来改善土料的颗粒级配，以降低循环失水对水泥土强度的影响。
The authors also try to improve grain composition of soil by replacing cement soil with some sand to reduce influence of environmental change to strength of cement improved soil.
其四为改良土的技术经济对比分析，讨论了未改良土与改良土的工程造价情况，以及掺入不同改良剂在不同掺量下的造价。
At last, economic contrast analysis of meliorated soil, discuss engineering cost of unimproved, meliorated soil and different mixing of different improved stuffing.
初步探讨了该研究在松嫩平原苏打型盐渍土的公路路基工程改良中的应用。
The application of the research in roadbed filler improvement of Songnen plain soda-saline soil is discussed initiatively.
素土经改良后具有良好的水稳定性，强度损失明显减少，以6%水泥土的水稳定性最佳。
The modified soil has a better water stability, with the loss of its strength obviously reduced, and when the blend ratio is 6%, its stability is the best in the tests.
针对棉苗床土特点进行合理施肥，是改良苗床、壮苗、省工、省肥的重要措施。
Rational fertilization according to characteristics of bed soil for cotton seedlings was an important measure for improving seedlings bed, strengthening seedlings, saving labor and costs.
对粉煤灰改良氯盐渍土的比重试验结果表明，改良氯盐渍土的比重随着含盐量和粉煤灰配合比的增加在不断减小。
The experiment result of specific gravity indicates that the specific gravity of chlorine soil soil improved by fly ash will reduce with the increase of the ratio of fly ash.
试验研究表明，掺合石灰的方法对该类膨胀土的改良效果较好。
The experimental study indicates mixing with lime improved this kind of expansive soil is of high quality.
滨海盐渍型水稻土脱盐过程中的碱化问题，可以通过施用改良剂来解决。
The question of basification which happen during desalting on littoral saline soil can resolve by using modifying agent.
通过对多个典型取土场的土样进行不同掺灰率的试验，确定了石灰改良膨胀土合理的掺灰率。
The reasonable lime mix rate of the lime improved expansile earthworks has been confirmed by the ways of various lime and earthwork mixture rate upon different earthwork sample.
结合盆栽试验和室内分析，矿土中添加合适比例的泥炭并种植紫花苜蓿、白三叶草后取得了较好的改良效果。
Combining pot experimentation and chemical analysis, good ameliorative effects are gained by adding peat on appropriate proportion level and planting alfalfa and white clover.
在分析了宁夏淡灰钙土现状的基础上，阐述了淡灰钙土开发利用中存在的问题，探讨了改良利用的途径。
Paper analyzed formation and characteristics of light sierozem in Ningxia, put forwards existing problems during developmental sierozem, and discussed ways of its amelioration and utilization.
通过振动三轴试验，研究干湿循环过程对水泥改良粉质粘土和水泥改良粉土疲劳强度的影响。
The effects of cyclic dry-wet process on the fatigue strength of the cement silt clay and the cement silt are researched by cyclic triaxial tests.
本文分析了福州盆地的土壤特性，探索福州盆地水稻土发育的特点，并提出改良方向。
This paper analyzes the specific properties of the soil in Fuzhou basin and explores the characteristics of the growth of paddy soil in Fuzhou basin.
水泥土改良的原理是水泥分布在土中构成坚固的核心，在所有的空隙中形成水化水泥的骨架，借以约束土粒。
The cement soil improvement principle is the cement distributes in the soil constitutes the firm core, forms the hydrated cement in all crevices the skeleton, in order to the restraint soil particles.
最后指出人为经济活动影响的重要性，针对土壤水盐运移的规律，提出控制以及改良次生盐渍土的几条措施。
Only if we can understand the rules of water and salt movement in the soil, can we control the secondary salinization, and achieve the sustainable development of this area.
结合土柱试和盆栽试验的结果综合分析，在土壤碱化度低于30%的轻、中度碱化土壤通过水利与农业措施相结合的办法而不用化学改良剂就可以改良好；
Combinating the siol column and potted plant experiment synthesize analysis that the soil alkalinity below 30% can be all improved by hydraulic and agricultural measure without the chemical amendment.
结合土柱试和盆栽试验的结果综合分析，在土壤碱化度低于30%的轻、中度碱化土壤通过水利与农业措施相结合的办法而不用化学改良剂就可以改良好；
Combinating the siol column and potted plant experiment synthesize analysis that the soil alkalinity below 30% can be all improved by hydraulic and agricultural measure without the chemical amendment.
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