The advent of industrialization has produced an enormous amount industrial waste slag, which drastically pollutes environmental resources. This study examines the production, stability, and microstructure a novel backfill geopolymer paste derived from multiple slags, including silica-alumina precursors (low-calcium composition) slags (high-calcium composition), as well two additives. characteri...

Geopolymers are a class of X-ray amorphous alkali aluminosilicate gel binder materials with potential applications in a wide range of areas. In particular, geopolymers can provide significant improvements over traditional Portland cement technology in applications requiring resistance to acid or salt attack, or thermal stability at temperatures up to 1000°C. The quasi-zeolitic nature of some of...

The effect of sodium hydroxide (SH) concentration and silicate (SS) content in alkali activator on mechanical properties wet-dry resistance fly ash added pumice based geopolymer paste were investigated. In the study, SH was used as 8, 10, 12 14 molar, while weight ratio SS to 0, 1, 2 3. While density samples increased significantly with increase molarity mixtures low content, it less affected b...

In this study, the effects of raw material and alkali activator properties on compressive strength geopolymer pastes were investigated. Class F fly ash (FA) blast furnace slag (S) used as materials in paste samples. The (100U, 80U-20Y, 60U-40Y, 40U-60Y, 20U-80Y, 100Y) activated using Na2SiO3 NaOH (8, 10, 12 14 M). All samples cured under laboratory conditions until test day. values 7 28th days ...

Abstract Architectural heritage preservation requires more attention to save historical monuments as it protects the distinctiveness of country. However, large portions construction and demolition waste come from renovation sector. As such, need for eco-friendly materials is a necessity decreasing environmental impact processes such carbon footprint global warming. The study aims use geopolymer...

This study reports on the microstructure, compressive strength, and drying shrinkage of metakaolin (MK) based geopolymers produced by partially replacing MK by oil palm ash (OPA). The OPA was used as raw material producing different molar ratios of SiO₂/Al₂O₃ and CaO/SiO₂. The geopolymer samples were cured at 80°C for 1, 2, or 4 hours and kept at ambient temperature until testing. The compressi...

Geopolymers are inorganic polymers formed from the alkaline activation of amorphous alumino-silicate materials resulting in a three-dimensional polymeric network. As a class of materials, it is seen to have the potential of replacing ordinary Portland cement (OPC), which for more than a hundred years has been the binder of choice for structural and building applications. Geopolymers have emerge...

This paper presents the results of study on effect of various parameters on mechanical properties of fly ash-based geopolymer mortar with bottom ash as partial or full replacement for sand. Compressive strength of samples with 10% bottom ash (BA) was comparable to those with only sand. Further increase in bottom ash content decreased the compressive strength. However, the reverse tendency occur...