摘要
为改善传统生土材料强度不足,实现改性后生土材料无害化回归,运用现代建筑材料技术的改性原理,在生土中掺加无毒、无害材料水玻璃、钾明矾、尿素、可再分散性乳胶粉、聚羧酸减水剂及秸秆纤维的方法对生土材料进行复合改性。通过正交试验对改性试块的抗压、抗折强度进行分析,研究不同掺量下生土试块强度的影响规律,确定改性材料的最优配合比。结果表明,改性材料的最优配合比为:水玻璃掺量0.8%,钾明矾掺量0.4%,尿素掺量1.2%,胶粉掺量2.0%,减水剂掺量1.0%,秸秆掺量0.4%。相比于素土试块,改性后生土试块抗折强度提高40.4%,抗压强度提高50.1%。
In order to improve the strength of the traditional raw soil materials and realize the harmless regression of the modified raw soil materials,the raw soil materials were modified by adding non-toxic harmless materials such as water glass,potassium alum,urea,redispersible latex powder,polycarboxylate superplasticizer and straw fiber.Through orthogonal test,the compressive and flexural strength of the modified test block were analyzed,and the influence law of different content on the strength of raw soil test block was studied,so as to determine the optimal mix proportion of modified materials.The results showed that the optimum mix proportion of modified materials is:0.8%of water glass,0.4%of potassium alum,1.2%of urea,2.0%of redispersible latex powder,1.0%of polycarboxylate superplasticizer,0.4%of straw fiber.Compared with the plain soil block,the flexural strength and compressive strength of the modified green soil block increase by 40.4%and 50.1%respectively.
作者
刘奕彤
李广洲
郭龙龙
袁康
Liu Yitong;Li Guangzhou;Guo Longlong;Yuan Kang(College of Hydraulic and Civil Engineering,Shihezi University,Shihezi,Xinjiang 832003;Bingtuan Industrial Technology Research Institute,Shihezi University,Shihezi,Xinjiang 832003)
出处
《非金属矿》
CSCD
北大核心
2021年第2期46-49,共4页
Non-Metallic Mines
基金
国家十三五重点研发计划(2018YFD1100402-03)。
关键词
生土改性
正交试验
强度
最优配合比
raw soil modification
orthogonal test
strength
optimal mix proportion
