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中文摘要：
为拓展压实水泥土在黄土地基处理中的应用,以水泥掺量、粉煤灰掺量和含水量为因素,设计L9（34）正交试验方案,击实试验法成样,试验研究了压实水泥黄土28d和56d的力学特性,分析了各因素对水泥土的干密度、强度和弹性模量的作用规律、作用机理,弹性模量与强度的关系。结果表明：粉煤灰掺量对压实水泥黄土的干密度影响极显著,含水量的影响显著,水泥掺量的影响不显著。水泥黄土的最大干密度和最优含水量应考虑粉煤灰掺量的影响,可不考虑水泥掺量的影响。粉煤灰能显著提高压实水泥黄土的强度和弹性模量,尤其是后期强度。水泥掺量对压实水泥黄土两个龄期的强度和弹性模量影响均极显著,粉煤灰掺量的后期影响极显著,含水量的影响显著。
英文摘要：
In order to expand the application of compacted soil-cement in loess foundation treatment,taking cement dosage,fly ash dosage and water content as factors,an orthogonal experimental scheme L9（34）was carried out to study the mechanical properties of compacted cement loess at 28 dand 56d.The effect of various factors on dry density,strength and elastic modulus,mechanism,relationship between elastic modulus and strength were analyzed.The results showed that there was an extremely significant influence of fly ash dosage on dry density of compacted cement loess,followed by water content and but not found of cement dosage.The influence of fly ash dosage should be taken into account when maximum dry density and optimum water content of cement soil are determined,the influence of cement dosage can be ignored.Fly ash can significantly increase the strength and elastic modulus of compacted cement loess,especially the later strength.The influence of cement dosage on strength and elastic modulus of compacted cement loess at two ages is extremely significant,as well as the fly ash dosage;in addition,the water content also showed a significant influence effect.
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