Influencing factors of efflorescence degree of cement-based decorative mortar

3rd International Conference on New Material and Chemical Industry

材料科学;化学工业

Liu, X.F.^1 ; Peng, J.H.^2 ; Zhang, J.X.^2^3

School of Civil Engineering and Architecture, Chongqing University of Science and Technology, Chongqing

401331, China^1

College of Materials Science and Engineering, Chongqing University, Chongqing

400045, China^2

Chongqing Jianda Building Materials Co. Ltd, Chongqing

400030, China^3

关键词: Cement-based;    Grey scale;    Image processing technology;    Open porosity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/479/1/012068/pdf
DOI  :  10.1088/1757-899X/479/1/012068

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The cement-based decorative mortar is a kind of good finishing material with abundant shape and colour. But the colour aberration of surface efflorescence seriously hinders the further application of cement-based decorative mortar. In the paper, it is researched of quantitative analysis on effect of calcium hydroxide content and porosity on the efflorescence degree by the function of efflorescence degree and grey scales based on image processing technology. The results show that the efflorescence degree will heighten as the content of calcium hydroxide increases, and there is a safe value of mortar without efflorescence. The open porosity plays another decisive role in the efflorescence degree of mortar. The efflorescence degree of mortar increases with the increase of porosity, and the relationship between them is linear.