The Effect of Nano-SiO2 Dispersed Methods on Mechanical Properties of Cement Mortar
Nano-SiO2 is added to the cement by using different dispersion methods, through the macroscopic mechanical properties to characterize its dispersion in the cement, it can be used to explore the best experimental process. The results show that the compressive strength of cement samples with different dispersion methods is different. When the physical dispersion method is used, the intensity is not improved, but the ultrasonic dispersion method is the smallest, and the dispersion of nano-SiO2 is -9.11%. When the surfactant is used as dispersant, the dispersion of nano-SiO2 by Naphthalene water reducer is the best, and the compressive strength is increased by 6.68%. By using polymeric dispersing agent, polyethylene glycol has a certain effect on the dispersion of nano-SiO2, but it has some damage to the cement (set-retarder, etc.). Based on the above experiments, we have obtained the best dispersion method, which uses ultrasonic dispersion, and also needs to add naphthalene water reducer.
nano-SiO2 ultrasonic dispersion water reducing agent polyethylene glycol
Mingle Liu Zonghui Zhou Xiuzhi Zhang Xiangzi Yang Xin Cheng Mingle Liu Zonghui Zhou Xiuzhi Zhang Xin Cheng
School of Materials Science and Engineering, University of Jinan, Jinan 250022, China Shandong Provincial Key Laboratory of Preparation and Measurement of Building Material,Jinan 250022,
国际会议
The 5th International Conference on the Durability of Concrete Structures(第五届混凝土结构耐久性国际学术会议)
深圳
英文
219-222
2016-07-01（万方平台首次上网日期，不代表论文的发表时间）