Corrosion Resistance of Rock Wool Board Fiber in Alkali Environment of Portland Cement
LIU Yunxiao
LI Xiaoguang
XIE Cheng
LIU Yaohui
LI Benyuan
HUANG Xianjun
MIN Bo
Abstract：Compared with original rock wool(ORW),the durability of the rock wool board fiber(RWBF) used in Portland cement-based materials was analyzed.After accelerated corrosion for 28 d in cement filtrate,the concentration of the chemical elements in the corroded solution,the micro morphology of the fibers,the distribution of surface chemical elements and the mineral composition were tested.It is found that after accelerated corrosion for 28 d,the ORW turns totally to powder,while the RWBF maintains good fiber shape;dissolution rate of silicon and aluminum in the RWBF was significantly lower than that of the ORW and milled powder.During the accelerated corrosion process,the main product was hydrated calcium silicate,and RWBF generates the minimum amount.Due to the adhesive and water repellent on its surface,RWBF has certain protective effect and much higher corrosion resistance than ORW.
Keywords：rock wool boardfibercement-basedcorrosion resistance
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 700-704 )