Today's cement concrete industry is a major polluter. Cement, used as binder in concrete, made by high-temperature combustion, which raises atmospheric CO2 levels and contributes to climate change natural resource depletion. As raw supplies diminish, several governments begin levy carbon taxes. Numerous research have been undertaken produce an innovative ecologically advantageous construction m...

This paper investigates the effect of the solids-to-liquids (S/L) and Na2SiO3/NaOH ratios on the production of palm oil boiler ash (POBA) based geopolymer. Sodium silicate and sodium hydroxide (NaOH) solution were used as alkaline activator with a NaOH concentration of 14 M. The geopolymer samples were prepared with different S/L ratios (0.5, 1.0, 1.25, 1.5, and 1.75) and Na2SiO3/NaOH ratios (0...

This study presents a discussion on the effects of different solid-to-liquid (S/L) ratios (0.97 to 1.19) and nanoSiO2 (NS) percentages (0% to 3%) on some properties of metakaolin (MK)-based geopolymers. The setting time and compressive strength were investigated. Mercury intrusion porosimetry, fourier transform infrared spectroscopy, and scanning electron microscopy were used to determine the m...

The cement production consumes many natural resources and energy, pollutes the environment, cannot meet current building materials’ green sustainable development requirements. Therefore, geopolymers have gained popularity as replacements in recent years. Geopolymers promising characteristics such low energy consumption carbon footprint, valuable compressive strength, fire resistance, flame resi...