Geopolymers represent a new class of inorganic materials that have great potential for practical application due to the properties used raw materials, as well peculiarities cementitious matrix structure formed during geopolymerization process. Cellular geopolymer specimens were produced in this study using F fly ash product, which is characterized by low reactivity geopolymerization. Several st...

The focus of this study is the fabrication innovative and sustainable ceramic-based geopolymer with improved low temperatures performances. Kaolin was mixed liquid sodium silicate (Na2SiO3) 12M hydroxide (NaOH) solution using alkali activator ratio 0.24 solid-to-liquid 1:1 to synthesize kaolin geopolymer. effect sintering profile on microstructure, pore evolution flexural strength were investig...

3D printing is a developing technology that has the ability to use different materials produce concrete elements with complex shapes. The utilization of geopolymers or alkali-activated (AAMs) in receiving significant interest due environmental benefits replacing ordinary Portland cement (OPC). solid activators one-part geopolymer can help broader at large scales, as corrosive, viscous, and haza...

Several studies of internal fiiction have been performed on silicate glasses. This work has the specificity to refer to isothermal mechanical spectroscopy over a large frequency range and for temperatures between 290 K and 520 K. Experiments were carried out with a single alkali silicate glass and two mixed alkali silicate glasses in order to observe the mixed alkali effect, to follow its evolu...

Carbonation is inevitable process during the service life of concrete structures, where CO 2 causes decalcification calcium-bearing phases. These changes affect durability and accelerate corrosion reinforcement. Alkali-activated materials (AAMs) are alternative, cement-free binders based on aluminosilicate rich precursor alkaline activator. The interest in AAMs increased last century, due to pr...

Utilisation of industrial waste-based material to develop a novel binding as an alternative Ordinary Portland Cement (OPC) has attracted growing attention recently reduce or eliminate the environmental footprint associated with OPC. This paper presents experimental study on synthesis and evaluation alkali activated Ground granulated blast furnace slag (GGBFS) composite using NaOH solution alkal...

1. Renin reacts with renin-activator to form a strong pressor substance which is heat-stable, water- and alcohol-soluble, fluorescent, acid-stable, and alkali-labile. It is a reducing substance and is destroyed by strong oxidizing substances. It forms crystalline salts with oxalic and picric acids. The color reaction for arginine is the only one found to be strongly positive. It is suggested th...