CAJ | 학술논문

为探索小区域黄土状土,通过水泥改良之后的可靠性以及适用性对杨凌土场的黄土状土在实验室掺和4%、5%、6%、7%、8%的42 .5号水泥,借助于液塑限试验、击实试验以及快速直剪试验3种常规土工试验方法,研究了5种不同掺和比水泥改良黄土状土的物理状态指标、最优含水、最大干密度以及抗剪强度指标,进一步分析了水泥改良土物理状态指标. 结果表明:掺和水泥能够较好地改善土的物理性状;同时,水泥掺和比、龄期等因素对水泥改良土强度指标c值影响巨大,内聚力c并随掺合比的增大而增大. 试验结果对实际工程项目采用水泥改良技术具有实际意义和参考价值.
위탐색소구역황토상토,통과수니개량지후적가고성이급괄용성대양릉토장적황토상토재실험실참화4%、5%、6%、7%、8%적42 .5호수니,차조우액소한시험、격실시험이급쾌속직전시험3충상규토공시험방법,연구료5충불동참화비수니개량황토상토적물리상태지표、최우함수、최대간밀도이급항전강도지표,진일보분석료수니개량토물리상태지표. 결과표명:참화수니능구교호지개선토적물이성상;동시,수니참화비、령기등인소대수니개량토강도지표c치영향거대,내취력c병수참합비적증대이증대. 시험결과대실제공정항목채용수니개량기술구유실제의의화삼고개치.
To explore loess soil of little area , the paper discussed the loess soil of Yangling soil field mixed with No .42 .5 cement of 4%, 5%, 6%, 7%and 8%in laboratory through improving the relia-bility and applicability of soil by cement .With the help of three kinds of conventional soil test methods such as liquid plastic limit test , compaction test and direct shear test , the paper studied the physical state index, optimal water content, maximum dry density and shear strength index of the loess soil improved by cement with five different mixing ratios , and then further analyzed the physical state index of improved soil.The result shows that the cement admixture can better improve the physical properties of loess soil . At the same time , the factors such as mixing ratio and age period of cement can greatly impact C value of strength index of loess soil while the cohesive force will increase with the enhance of cement blending rati -o.The results have practical significance and reference value for the actual project of loess soil in yan-gling demonstration zone when the cement improved technology is applied .