The properties of porous and lightweight ceramic foam that can be cured at room temperature using metakaolin-based geopolymers were studied. A geopolymer slurry was prepared metakaolin a potassium-based alkaline medium temperature, the obtained viscous paste expanded via gaseous methods, by means decomposition peroxide temperature. Therefore, (GP) developed in this study through multivariate ge...

A significant amount of waste glass is generated in Australia and around the world, which requires sustainable recycling. The use recycled as aggregates concrete one many options for This study investigated characteristics ordinary Portland cement (OPC) geopolymer concretes containing different proportions a partial replacement natural coarse aggregate. It was found that 28-day compressive tens...

With the growing interest in foamed geopolymer manufacture, there is an increasing demand for tailoring these composites’ pore structure. The binary system of two surfactants offers a possibility enhancing foam formation efficiency and stability paste, however, their effects are not well understood. influence blends on formation, size, distribution fly ash-based matrix investigated synergistic ...

Metakaolinite-based geopolymer has been synthesized at about 25 °C from metakaolin which has been calcined in different temperatures (600-900 °C) and different Na2O/SiO2 ratio activator (0.3-1.1). Compressive strength and microstructure of cement pastes after 7-28 days curing at ambient temperature were measured. Compressive strength tests on the samples showed that the sample made with calcine...

Inorganic polymers were synthesized from dehydroxylated aluminosilicate clay (metakaolinite) condensed with sodium silicate in a highly alkaline environment. The thermal treatment of aluminosilicate materials causes changes in their structure with an increase in the amorphous phase. For that kind of structural change XRD analysis is not appropriate, so those changes are currently assessed by in...

This study followed the first 20 h of flyash geopolymerization at 70 °C using time resolved Wide Angle X-ray Scattering (WAXS). The extent of dissolution of the amorphous phase of the flyash was determined to range from 29% to 54% for the different formulations trialed. The dissolution rate of the flyash significantly reduced after the first 5 h for all samples. During the formation stage of th...

Zeolite-geopolymer hybrid materials have been formed when kaolin was used as a starting material. Their characteristics are of interest because they can have a wide pore size distribution with micro- and meso-pores due to the zeolite and geopolymer, respectively. In this study, Zeolite-geopolymer hybrid bulk materials were fabricated using four kinds of kaolinitic clays (a halloysite and three ...

The environment on the lunar surface poses some difficult challenges to building long-term lunar bases; therefore, scientists and engineers have proposed the creation of habitats using lunar building materials. These materials must meet the following conditions: be resistant to severe lunar temperature cycles, be stable in a vacuum environment, have minimal water requirements, and be sourced fr...

Abstract This work aimed to evaluate the role of addition blast furnace slag for formation reaction products and strength development volcanic ash-based phosphate geopolymer. Volcanic ash was replaced by 4 6 wt% ground granulated accelerate kinetics. Then, influence boric acid controlling setting kinetics reactions also evaluated. The results demonstrated that competition between dissolution as...