【摘要】 目的研究粉状固化剂不同掺量对生土墙体材料力学性能及耐久性的影响,确定最佳掺量,分析固化剂的固化效果.方法通过对西安土样中掺入0,5%,10%,15%,20%的自配固化剂测定试件不同龄期的抗压强度、抗折强度、水稳定性、冻融性能和收缩性能,并采用SEM电镜对固化土微观结构进行分析.结果掺入固化剂的生土墙体材料的性能明显优于未掺试件,并且随着固化剂掺量的增加,生土墙体材料力学性能、水稳定性能、抗冻性能均明显提高,收缩性能变化不是很明显.结论固化剂对西安地区生土材料性能改善效果明显,固化剂掺量为15%时,试件各项性能满足作为墙体材料的国家标准值.更多还原

【Abstract】 In this paper,the effects of different dosage of powdered solidified agent on the mechanical prop-erties and durability of raw soil materials were studied and the perfect mixing content was ascertained and so-lidification effect of powdered solidified agent was analyzed.0,5%,10%,15% and 20% of self-prepared solidified agent were added into Xi′an soil sample to determine compressive strength,flexural strength,water stability,performance of freeze-thaw and shrinkage property of different ages.SEM was used to analyze mi-crostructure of solidified soil.The performance of raw soil materials with solidified agent was superior to the samples without solidified agent.The mechanical properties,water stability,freezing and thawing were im-proved with the increase of the dosage of solidified agent.However,shrinkage property was not remarkable to supplementation and omission of solidified agent.The effect of solidified agent on the raw soil materials for wall was obvious and every performance of sample could comply with national standards basically when solidified agent was 15%.更多还原