铁道标准设计Issue(12)：63-66,4.
二灰土改良风积土可行性试验研究
Experimental Study on Feasibility of Lime-Ash Improved Aeolian Soil
摘要
Abstract
The mechanical parameters of lime-ash improved aeolian soil were contrastively analyzed by means of laboratory experiment in this thesis, so as to study the feasibility of using the lime-ash improved aeolian soil. And then the conclusions were drawn as follows. ( 1 ) The process of strength forming of lime-ash improved soil is a process of hydration reaction, and the whole process will last longer with monotonic increasing of the strength of lime-ash improved soil. (2)It is relatively difficult to increase the shear strength of aeolian soil by merely increasing the compaction work, while the particle-size gradation of the aeolian soil can effectively be improved by the use of lime-ash improved aeolian soil via a certain mixing proportion. (3) The compactness degree of the lime-ash improved soil has greater effect on the cohesion force, and the shear strength of the lime-ash improved soil will increase with the increase of the compactness degree. (4)It is suggested that the 96% compactness degree with the 11. 4% porosity ratio can serve as the compaction standard of the railway subgrade with lime-ash improved soil. ( 5 ) The lime-ash-soil ratio, compactness degree, moisture content and the confining pressure are the important factors affecting the shear strength characteristics, among which the lime-ash-soil ratio is the most important one.关键词
路基填料/二灰土/风积土/力学特性/灰土比/击实试验/三轴试验Key words
subgrade filler/lime-ash soil/aeolian soil/mechanical characteristics/lime-ash-soil ratio/compaction test/triaxial test分类
交通工程引用本文复制引用
薛晓辉,扈世民..二灰土改良风积土可行性试验研究[J].铁道标准设计,2013,(12):63-66,4.基金项目
国家自然科学基金(51274079) （51274079）
