工程科学学报2016，Vol.38Issue(5)：595-601,7.DOI:10.13374/j.issn2095-9389.2016.05.001
泵送剂对膏体抗压强度的影响试验研究及机理分析
Experimental study and mechanism analysis on the effect of pumping agents on the compressive strength of paste slurries
摘要
Abstract
Pumping agents can improve the fluidity of paste slurries. However, the effecting mechanism of pumping agents on the coagulability of paste slurries is not made clear. To solve this problem, a pumping agent was added for compression strength tests and environmental scanning electron microscopy ( ESEM) observations. Compression strength test results indicate that the pumping agent can improve the coagulability of paste slurries, and the more the pumping agent amount, the better the coagulability of paste slurries. ESEM observation results show that large size floccules and pores decrease after adding the pumping agent, and the paste’s microstruc-ture is changed. The fractal dimensions of the paste’s microstructure images were calculated based on the image processing technology and fractal theory, and the structure was quantitatively analyzed. The mechanism of improving the coagulability of paste slurries was discussed. It is found that the coagulability of paste slurries is affected by changing the size and number of flocculants, the porosity and the hydration reaction.关键词
膏体/药剂/凝结性/微观结构/分形维数Key words
pastes/agents/coagulability/microstructure/fractal dimension分类
矿业与冶金引用本文复制引用
李公成,王洪江,吴爱祥,杨鹏..泵送剂对膏体抗压强度的影响试验研究及机理分析[J].工程科学学报,2016,38(5):595-601,7.基金项目
国家自然科学基金项目资助项目(51374034) （51374034）
国家“十二五”科技支撑计划资助项目(2012BAB08B02) （2012BAB08B02）
国家自然科学基金资助项目(51304011) （51304011）
