Effect of Recycled Fine Powder and Mineral Admixture on the Properties of the Cement Mortar

2018 2nd International Conference on Environmental, Industrial and Energy Engineering

生态环境科学;能源学

Kang, Xiaoming^1 ; Li, Ying^1

School of Civil Engineering, Qinghai University, Xining

810016, China^1

关键词: Cement mortars;    Cementitious materials;    Compressive and flexural strengths;    Fine powders;    Inert materials;    Inhibitory effect;    Mineral admixtures;    Research results;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/219/1/012026/pdf
DOI  :  10.1088/1755-1315/219/1/012026

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

By studying the effect of recycled fine powder and its recombination with fly ash and silica fume on the compressive and flexural strength of the mortar, to explore the feasibility of reusing the powder. The research results show that the recycled fine powder is an "inert material", which will reduce the compressive and flexural strength of the mortar. The fly ash can improve the negative effect of the powder on the flexural strength, but it has little effect on the compressive strength. After fly ash and silica fume are mixed, it can obviously improve the inhibitory effect of the powder on the compressive and flexural strength of the mortar. Therefore, it can be concluded that when recycled fine powder, fly ash and silica fume are blended at a ratio of 5:4:1 to replace 20% of the cement, it can be used as a cementitious material instead of cement to make the mortar that meet the strength requirements, thereby conserving resources.