The Promotion of Nano-SiO2 on the Compressive Strength of Alkali-Activated Materials
Nanomaterial which has high activity is widely used in the modification of cement-based materials due to its physical filling and chemical bonding. This paper mainly studied the influence of nano-SiO2 on the compressive strength of the alkali-activated materials, using XRD and SEM technology to analyze the mineral composition microstructure of alkali-activated materials, modification effect, etc. The results show that the doping of nano-SiO2 can enhance the compressive strength of alkali-activated materials. Under the condition of fixed water-binder ratio and alkali content, the optimum dosage of nano-SiO2 is 4%. When the content is 4%, the intensity of 28 days is increased by 26.81% compared with the blank sample, and compressive strength of 94.93 MPa is reached. By XRD and SEM, we can find a large number of CSH and a certain amount of CH in the sample. The promotion effect of nano-SiO2 on the alkali-activated materials provides a better support for the application of the alkaliactivated materials in reality.
Tongtong Zhou Zonghui Zhou Peng Du Xin Cheng
Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials,Engineering Center of Advanced Building Materials of Ministry of Education, University of Jinan,Jinan 250022, China
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
215-218
2016-07-01（万方平台首次上网日期，不代表论文的发表时间）