Enhancing Studies on Microstructural and Mechanical Properties of Cement Mortar with Vermiculite Powder, Calcium Aluminate Cement, and GGBFS Substitution

Abstract

This work delves into the exploration of novel materials to pave the way for more environmentally friendly and robust cement mortar formulations. The study centres on three key components: vermiculite powder (VP), calcium aluminate cement (CAC), and ground granulated blast furnace slag (GGBFS). These materials, when thoughtfully blended, contribute to the creation of sustainable cement mortar with enhanced performance characteristics. The research systematically investigates various mixtures of these materials, focusing on different ratios of vermiculite powder and CAC, along with the inclusion of GGBFS as a critical ingredient. Mortar mixes with a 1:3 ratio was prepared, and the compressive strength of each combination was rigorously examined and as a result found Ma mix exhibits a higher strength of approximately 15.02 MPa, while Mb, Mc & Md show slightly moderate strengths, around 12.0 Mpa, 12.24 Mpa and 13.54 MPa respectively, also the Vermiculite particles displayed a characteristic plate-like structure with a size range of approximately 10 to 50 micrometers, contributing to its unique properties in cement mortar. Meanwhile, the GGBFS particles appeared predominantly as irregularly shaped grains with an average size ranging from 5 to 20 micrometers. Notably, the vermiculite powder exhibited diverse compositions ranging from 0% to 50%, while CAC was varied between 10% and 50%, with GGBFS making up the remainder at 50%. The outcomes were compelling, with the optimal mortar dosage showcasing commendable compressive strength. Building upon these promising results, the study further extended its investigations to cement mortar formulations, yielding positive and significant advancements. The research culminated in a detailed assessment of compressive strength, where the newly developed cement mortar not only met but exceeded the performance of standard cement mortar compositions. This ground breaking research not only highlights the potential for sustainable construction practices but also underscores the significance of innovative material combinations in pushing the boundaries of cement mortar performance. The findings offer a tangible pathway toward eco-friendly construction while enhancing structural integrity, thus contributing to the development of more resilient and sustainable infrastructure systems.