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为了确定石灰固化滨海盐渍土力学强度指标与微结构指标之间的变化关系,选取固化土的微结构指标如等效直径De、扁圆度Kci、面积比Afrac为试验因素,利用响应曲面法进行试验设计,研究石灰固化盐渍土的力学强度指标与最优微结构参数间关系,并进行了分析和验证。结果表明,固化土微结构最优指标是等效直径De为1.8、扁圆度Kci为0.45、面积比Afrac为0.74时,石灰固化盐渍土的力学强度指标达到峰值。该模型可以用于各类固化盐渍土改良方案的必选和研究,具有一定的参考价值。
In order to determine the relationship between the mechanical strength index of lime solidified coastal saline soil and the microstructural index, the microstructure indexes of the solidified clay such as equivalent diameter De, oblateness Kci and area ratio Afrac were selected as test factors. Response surface methodology The experimental design was carried out to study the relationship between the mechanical strength index of lime-hardened saline soil and the optimal microstructure parameters and analyzed and verified. The results show that the optimum index of microstructure of cured soil is that the equivalent diameter De is 1.8, the oblateness Kci is 0.45 and the area ratio Afrac is 0.74, the mechanical strength index of lime-cured saline soil reaches the peak value. The model can be used for all kinds of solidified saline soil improvement program of choice and research, with some reference value.