Performance of Magnesium Slag Lignin Fiber Composite Plastering Mortar

To effectively and make full use of industrial waste,improve the performance of plastering mortar,taking water binder ratio,magnesium slag content,admixture content and lignin fiber content as factors,orthogonal test scheme was designed to study the performance of magnesium slag lignin fiber composite plastering mortar by experiment.The particle size distribution of magnesium slag was analyzed by laser particle size analyzer.Morphology of magnesium slag and microstructure of mortar was analyzed by scanning electron microscope.Effect and significance of each factor was analyzed by using the orthogonal test theory.The multivariate nonlinear regression model of plastering mortar workability parameters and the mechanical strength were established by the least squares method.Under experimental conditions,magnesium slag,additive and wood cellulose can obviously improve the mortar workability,the effect of lignin fiber on mortar insurance water is significant,of magnesium slag on mortar fluidity is adverse,effect of magnesium slag and lignin fiber on plastering mortar mechanical strength is positive,effect of lignin fiber on mortar strength is not significant,of magnesium slag content is great,the significant of regression model is high,and the correlation was good.