中南大学学报（自然科学版）Issue(1)：204-209,6.DOI:10.11817/j.issn.1672-7207.2016.01.028
全尾砂膏体小型圆柱塌落度检测
Small cylindrical slump test for unclassified tailings paste
摘要
Abstract
The slump test miniaturization of tailings backfill slurry was explored, focusing on the accuracy and applicability of a mini cylinder with 7.5 cm height and 7.5 cm diameter. Firstly, based on the paste rheological theory, a model which describing the relationship of yield stress and slump was set up for the slump process. Secondly, the slump test accuracy was verified with the rheometer test result. Consequently, the application scope of the mini slump cylinder was determined. The results show the mini slump test has 3.84%higher accuracy than the standard cone test. The pump delivery paste requires a standard slump value of 15−20 cm which is equivalent to 1.5−2.3 cm of the mini slump test;meanwhile, the gravity delivery requires a standard slump value of 23−27 cm which is equivalent to 2.9−3.6 cm of the mini slump test. The mini slump test is valid for slurry with particle size smaller than 3 mm, and standard slump more than 7.5 mm. The mini slump test becomes an alternative for the slump estimation of fine particle paste slurry.关键词
全尾砂膏体/小型圆柱/塌落度检测/屈服应力Key words
unclassified tailings paste material/small scale cylinder/slump test/yield stress分类
数理科学引用本文复制引用
沈慧明,吴爱祥,姜立春,王贻明,焦华喆,刘晓辉..全尾砂膏体小型圆柱塌落度检测[J].中南大学学报（自然科学版）,2016,(1):204-209,6.基金项目
国家“十二五”科技支撑计划项目(2012BAB08B02)；国家自然科学基金资助项目(51574013，51374034)(Project(2012BAB08B02) supported by the National Science and Technology Pillar Program during the 12th “Five-year” Plan Period （2012BAB08B02）
Projects(51574013,51374034) supported by the National Natural Science Foundation of China) （51574013,51374034）
