Impact of Washed and Unwashed Beach Sand on Geopolymer Mortars

Faculty of Engineering, University of Balamand, 100-Tripoli, Lebanon

Abstract

This research examines how the choice of sand aggregates (fine or coarse) affects the mechanical characteristics of geopolymer mortars, particularly emphasizing the use of two types of beach sand: washed and unwashed. Different sets of geopolymer mortars were made using various types of sand: Egyptian sand, unwashed Beach Sand (coarse, & fine), and Washed Beach Sand (coarse & fine). Standard curing techniques were followed to evaluate mechanical properties. The results show apparent differences in the mechanical performance of geopolymer mortars according to the fineness of the aggregates used and the impact of the washing. The compressive strengths of mortars made with unwashed beach sand differed significantly from those made with cleaned sand [2]. As such, this study advances the knowledge of the complex interactions between various fine aggregates and the functionality of geopolymer mortars. It highlights the relevance of fine aggregate selection and the optimization of mortar formulations to improve mechanical qualities and durability [3]. This will help to promote the broader use of geopolymer-based materials for more sustainable, eco-friendly construction projects. This study researched the relationship between the mechanical properties of geopolymer mortars and various kinds of sand. The aim was to acquire the fundamental knowledge to choose eco-friendly and sustainable building materials. Egyptian sand and fine, regular beach sand were seen to have consistent and dependable compressive strength characteristics.