摘要
为探讨特细砂混凝土在生态护岸河道整治工程中的应用可行性,在室内展开不同水灰比、含砂率条件下特细砂混凝土坍落度、抗压强度及抗渗性试验。实验结果表明:①特细砂混凝土的坍落度、黏聚性及保水性随着水灰比及含砂率的增长,整体呈现出逐渐变差的趋势,但其坍落度均在10~20 mm内,能够满足工程要求;②特细砂混凝土的单轴抗压强度随着含砂率的提高而上升,呈线性正相关关系;随着水灰比的提高而逐渐下降,呈线性负相关关系;③不同水灰比、含砂率特细砂混凝土的抗渗等级均为6级,最佳配合比为砂率0.33、水灰比0.45,能够满足护岸工程抗渗要求。
In order to study the application of ultra-fine sand concrete in ecological revetment of water conservancy projects in some areas of China,laboratory tests on slump,compressive strength and impermeability of ultra-fine sand concrete under different water cement ratio and sand content were carried out.The experimental results show that:①the slump,cohesiveness and water holding capacity of superfine sand concrete gradually deteriorate with the increase of water cement ratio and sand content,but the slump of superfine sand concrete is within 10-20 mm,which can meet the engineering requirements;②the uniaxial compressive strength of superfine sand concrete increases with the increase of sand content,and has a linear positive correlation with the increase of water cement ratio.③The impermeability grade of ultra-fine sand concrete with different water cement ratio and sand content is 6,and the best mix ratio is 0.33 sand ratio and 0.45 water cement ratio,which can meet the impermeability requirements of revetment engineering.
作者
陈金武
CHEN Jin-wu(Tongcheng City Dashahe River Management Committee Office,Anqing 231400,Anhui,China)
出处
《水利科技与经济》
2020年第6期76-79,共4页
Water Conservancy Science and Technology and Economy
关键词
特细砂混凝土
新型材料
生态护岸
河道整治
superfine sand concrete
new materials
hydraulic engineering
ecological revetment
