摘要
通过不同机械粉磨时间对钼渣特性的影响试验,获取粉磨最佳时间。将该粉磨时间作用下钼渣作为掺合料制备水泥基材料,分析不同钼渣掺量对水泥基材料力学性能、孔隙结构等性能的影响。结果表明:综合水泥基材料的物理力学实验结果,得出在钼渣掺量为30%时,水泥基材料各项性能达到最佳。而粉磨最佳时间为2.0 h,此时钼渣的各项性能达到最佳状态。适当掺加钼渣可以有效地改善水泥基材料的孔隙结构,使得水泥基材料变得更加密实。过量的掺加钼渣,会破坏了水泥基材料的微观孔隙结构,进而导致了水泥基材料各项性能的降低。此时水泥基材料仍然保持着较好的强度且可以满足实际工程的需要,但是从经济方面考虑就增大了成本,不利于工程的进展。
The optimum grinding time is obtained by experiments on the effect of different mechanical grinding time on the characteristics of molybdenum slag.The molybdenum slag under the action of this grinding time is used as an admixture to prepare cement-based materials,and the effects of different molybdenum slag content on the mechanical properties,pore structure and other properties of cement-based mate⁃rials are analyzed.The results show that when the content of molybdenum slag is 30%,the performance of cement-based materials is the best.The best grinding time is 2.0 h,and the various properties of molybdenum slag reach the best state.Appropriate addition of molybde⁃num slag can effectively improve the pore structure of cement-based materials and make cement-based materials more dense.Excessive addi⁃tion of molybdenum slag will destroy the microscopic pore structure of cement-based materials,which will lead to the reduction of the proper⁃ties of cement-based materials.At this time,the cement-based materials still maintain good strength and can meet the needs of practical engineering,but the cost is increased from the economic point of view,which is not conducive to the progress of the project.
作者
夏立波
王华锋
喻征超
张成武
陈东升
XIA Li-bo;WANG Hua-feng;YU Zheng-chao;ZHANG Cheng-wu;CHEN Dong-sheng(Powerchina Huadong Engineering Co.,Ltd.,Hangzhou 311122,Zhejiang Province,China)
出处
《中国农村水利水电》
北大核心
2024年第7期157-163,169,共8页
China Rural Water and Hydropower
基金
浙江省建设科学项目(2020K231)
浙江华东工程咨询有限公司科技项目(2020HDR)。
关键词
粉磨时间
钼渣
水泥基材料
力学性能
孔隙结构
grinding time
molybdenum slag
cement-based materials
mechanical properties
pore structure
作者简介
夏立波(1987-),男,工程师,研究方向为土木工程。E-mail:m17319422880@163.com。
