同济大学学报（自然科学版）2017，Vol.45Issue(3)：317-322,6.DOI:10.11908/j.issn.0253-374x.2017.03.002
高庙子膨润土悬浮液的抗冲蚀流变特性
Anti-erosion Rheological Characteristics of Gaomiaozi Bentonite Suspension
摘要
Abstract
The rheological characteristics of Gaomiaozi(GMZ)bentonite suspension with different water-solid ratio,salt type and concentration were investigated by using Brookfield DVⅢ rheological device,and the yield stresses of bentonite suspensions were obtained from rheological curves,then the yielding initial water velocity was calculated with a consideration of the Stoke law.The results showed that the rheological curves of bentonite suspension moved lower with the increase of water-solid ratio.For the bentonite suspension with a water-solid ratio below 5.0,the suspension presented a characteristic of pseudoplastic fluid when shearing rate was slow,while the rheological curve slope tended to be constant when shearing rate exceeded a certain value.For the bentonite suspension with a water-solid ratio above 5.0,the suspension gradually presented a characteristic of newtonian fluid with the increase of water-solid ratio;when the concentration of NaCl solution increased,the yielding stress of bentonite suspension firstly decreased and then increased,while the yielding stress would be reduced all through the test with the increase of CaCl2 solution's concentration;the yielding initial water velocity of bentonite suspension was between 10 4～ 10-2 m · s-1 under the condition in this study.关键词
膨润土/冲蚀/流变性/屈服应力Key words
bentonite/erosion/rheological characteristic/yield stress分类
建筑与水利引用本文复制引用
陈宝,田昌春,郭家兴,陈建琴..高庙子膨润土悬浮液的抗冲蚀流变特性[J].同济大学学报（自然科学版）,2017,45(3):317-322,6.基金项目
国家自然科学基金(41372270) （41372270）
