CAJ | 학술논문

选择掺入生石膏、生石灰、碳酸钠来消除有机质对水泥固化淤泥质土的不利影响。以生石膏、生石灰和碳酸钠的掺量作为3个影响因子，以固化淤泥质土7 d和90 d的无侧限抗压强度为响应值，采用旋转中心组合设计安排试验。利用响应面法对这3种外加剂的配比进行优化，并通过单因子效应分析和交互作用分析分别考察各影响因子单独变化对强度响应值的影响以及3种添加剂的交互作用效应。结果表明：强度响应对生石膏和生石灰掺量变化的敏感程度随龄期的增大而增大，而对于碳酸钠，情况则相反。7 d时，生石灰与碳酸钠的交互作用显著；而90 d时，则生石膏与碳酸钠的交互作用显著。最终得出在腐植酸掺量6%和水泥掺量15%前提下，3种外加剂在7 d和90 d的最佳配比。在最优配方的掺加下，对于7 d和90 d龄期固化淤泥质土的实际强度可以分别达到623、1213 kPa。
선택참입생석고、생석회、탄산납래소제유궤질대수니고화어니질토적불리영향。이생석고、생석회화탄산납적참량작위3개영향인자，이고화어니질토7 d화90 d적무측한항압강도위향응치，채용선전중심조합설계안배시험。이용향응면법대저3충외가제적배비진행우화，병통과단인자효응분석화교호작용분석분별고찰각영향인자단독변화대강도향응치적영향이급3충첨가제적교호작용효응。결과표명：강도향응대생석고화생석회참량변화적민감정도수령기적증대이증대，이대우탄산납，정황칙상반。7 d시，생석회여탄산납적교호작용현저；이90 d시，칙생석고여탄산납적교호작용현저。최종득출재부식산참량6%화수니참량15%전제하，3충외가제재7 d화90 d적최가배비。재최우배방적참가하，대우7 d화90 d령기고화어니질토적실제강도가이분별체도623、1213 kPa。
Gypsum, lime and sodium carbonate are selected as additives to eliminate the disbenefits of organic matter on cement stabilization. Response surface methodology (RSM) based on central composite rotatable design (CCRD) is employed for experiment arrangement and optimizing the ratios of additives, in which response values are the unconfined compressive strength values of 7 days and 90 days while the contents of additives are independent variables. Meanwhile, one-factor and mutual-influence analysis are used to investigate the effect of each factor on response values and evaluate mutual-influence among the three independent variables. The results show that strength as response value becomes more sensitive to the content of gypsum and lime as the age increases. However, the situation is reverse for sodium carbonate. With the age of 7 days and 90 days, the mutual-influence for lime and sodium carbonate, gypsum and sodium carbonate are significant respectively. On the premise of humic acid content is 6%, cement content is 15%, the optimal ratios for additives with the age being 7 days and 90 days are presented and once the optimal ratios for additives are applied, the actual strength of stabilized muddy soil can reach 623 kPa(7 d) and 1 213 kPa(90 d).