This volume of the "Advanced Materials Research" journal contains papers reflecting research results in developing new materials and investigating their properties. The main covered topics comprise determining the suitability of natural fibers in reinforcing concrete, development of a sustainable cement product from solid waste, composite polymer counter electrodes, an effective anti-microbial coating, and new material for effective treatment of wastewater. It presents the results of a study on the prediction of the piezoelectric composites’ effective properties and the findings of the experimental investigation of sills’ effect on the hydraulic jump configurations evolving in a symmetrical trapezoidal channel. Furthermore, the articles demonstrate a novel method to classify surface defects on silicon wafers, an unconventional approach to the concrete evaluation study, and a new method to analyze the material flow and defect detection. The papers collectedin this volume will be helpful for professionals in various engineering fields, students and academic staff.