Chemical Interactions Between Cement And E-Glass Fibres With A Cao-Ba0-Si02-Tio2 Coating

E-glass fibres were coated with a 15CaO-15BaO-20SiO2-50TiO2 thin film by the sol-gel method. Mechanical and chemical tests were performed on coated and uncoated fibres in cement and cement extract solutions to investigate the interactions between cement and gel-glass film The results show that the resistance of E-glass fibres to the alkali cement medium is enhanced by the 15 CaO-15BaO-20SiO2-50TiO2 coating. The significant roles of TiL2, CaO, and BaO in the protection fibres from the alkaline attack of cement are described. Some evidence is presented that the alkali corrosion of the coated fibres results in the formation of a thick and compact Ti film that suppresses further corrosion reaction.