石灰粉煤灰稳定黄河冲积粉土的最佳配比分析

OPTIMUM MIX ANALYSIS FOR THE YELLOW RIVER SILT STABILIZED WITH LIMEFLYASH

用正交试验设计方法，对石灰粉煤灰稳定黄河冲积粉土的配比作了室内试验研究，分析了不同龄期的抗压强度．方差分析表明，２８ｄ的强度受误差影响较大，９０ｄ的试验强度结果稳定，可以此进行配比分析；二灰含量、二灰比依次是影响二灰土强度的主次因素．回归分析得到了有效的回归方程．

Using orthogonal design method, this paper investigates the mix for the yellow river silt stabilized with limeflyash and gives an analysis of compressive strength at different ages. Variance analysis indicates that the strength results at 28 days aren't reliable due to the error's influence, but the results at 90 days are stable and can be used to analyze the mix; Limeflyash content and their ratio are the main and subordinate factors respectively. An effective regression equation is developed by regression analysis; the optimum ratio of lime flyash varies slightly with the content even if for the same silt.