摘要
采用硬脂酸和乙醇改性铁尾矿石,制备了超疏水铁尾矿石,研究了硬脂酸的掺量(2%、4%、6%、8%、10%、12%)对超疏水铁尾矿石疏水性的影响,分析了超疏水铁尾矿石的掺量(0、10%、20%、30%)对混凝土疏水性、工作性和吸水率的影响。结果表明:随着硬脂酸掺量的增加,超疏水铁尾矿石的水接触角先增大后减小,当硬脂酸掺量为8%时,超疏水铁尾矿石的水接触角为153°,达到超疏水状态;随着超疏水铁尾矿石掺量的增加,混凝土的疏水性提高,稠度增大,吸水率降低。
Superhydrophobic iron tailings stone was prepared by modifying iron tailings powder with stearic acid and ethanol.The effects of the content of stearic acid(2%,4%,6%,8%,10%,12%)on the hydrophobicity of superhydrophobic iron tailings stone were studied,and the influence of the content of superhydrophobic iron tailings stone(0%,10%,20%,30%)on the hydrophobicity,workability,and water absorption of concrete was analyzed.The results show that with the increase of stearic acid content,the water contact angle of superhydrophobic iron tailings stone first increases and then decreases.When the stearic acid content is 8%,the water contact angle of superhydrophobic iron tailings stone is 153°,reaching a superhydrophobic state.With the increase of the content of superhydrophobic iron tailings stone,the hydrophobicity of concrete increases,the consistency increases,and the water absorption rate decreases.
作者
赵寅山
张小兵
ZHAO Yinshan;ZHANG Xiaobing(School of Civil Engineering,Shandong Jianzhu University,Jinan 250101,China;Northwest Research Institute Co.,Ltd.of China Railway Engineering Corporation,Lanzhou 730000,China)
出处
《混凝土与水泥制品》
2023年第8期97-100,共4页
China Concrete and Cement Products
关键词
超疏水性
铁尾矿石
混凝土
疏水性
工作性
耐久性能
Superhydrophobicity
Iron tailings stone
Concrete
Hydrophobicity
Workability
Durability
作者简介
赵寅山(1994-),男,硕士研究生。联系电话:18753191941,E-mail:1578670246@qq.com;通信作者:张小兵(1983-),男,高级工程师。
