Enhancing the Strength of Green Cement Mortar by using Fly Ash Powder, Glass Powder, and Brick Powder

The extensive utilization of cement in concrete mixtures escalates the consumption of natural resources, hence inflating costs and augmenting carbon dioxide emissions associated with cement production. Consequently, reusing waste materials increases the availability of natural resources, helps the environment in the long run, and makes it easier to manage landfills. This research aims to develop green mortar using various waste cementitious materials, including Waste Glass Powder (WGP), Waste Brick Powder (WBP), and Fly Ash Powder (FAP), with a 30 percent cement replacement rate, thereby minimizing waste and reducing CO₂ emissions. Different mix proportions of green mortars were tested for compressive and flexural strength, density, and water absorption. The job is split into two halves. Initially, cement was replaced by 30% of each of these materials. In the second stage, cement was replaced by different proportions of these materials, with a total replacement of 30%. The results showed that green mortar containing 30% FAP provides higher density and strength (under compression and flexural loading). The mix with a partial cement substitute (30%) (5% WGP +10% FAP +15% WBP) (M2) for green mortar exhibits improved density and strength (during compression and flexural) greater than M1 (10% WGP +10% FAP+10% WBP).