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采用水泥搅拌桩进行地基处理时,常常因为有机质的存在,使得采用水泥搅拌法进行地基处理的效果不甚理想,这是因为有机质能够与水泥矿物发生一系列化学作用,阻碍水泥水化产物的晶体生长,从而不利于水泥加固土强度增长。针对有机质对水泥加固土强度的这种不利影响,进行了一些尝试性试验,旨在寻求一种添加剂,用来抵消有机质对强度的这种不利影响。试验结果及化学机理分析表明,纯氯化钠能够有效抵消有机质对强度的这种不利影响,可以作为一种既有效又经济实用的水泥土添加剂。
When using cement mixing pile for foundation treatment, the effect of using cement mixing method for foundation treatment is often unsatisfactory because of the presence of organic matter, because the organic matter can undergo a series of chemical interactions with cement minerals and impede the crystal of cement hydration product Growth, which is not conducive to cement-reinforced soil strength growth. In response to this adverse effect of organic matter on the strength of cementitious soil, a number of tentative tests were conducted to find an additive that counteracts this adverse effect of organic matter on strength. Experimental results and chemical analysis show that pure sodium chloride can effectively counteract the adverse effect of organic matter on the strength and can be used as an effective and economical cement earth additive.