The crystallisation behaviour of vitrified industrial waste (fly ash from domiciliary solid waste incineration) was examined by differential thermal analysis, X-ray diffractometry and scanning electron microscopy. It was demonstrated that powder processing route was required to transform the vitrified industrial waste into glass-ceramics products. Time-Temperature-Transformation (TTT) diagrams ...

Approximately, 50 to 70 percent of hydration products in hydrated cement paste are polymorphisms of C-S-H gel. It is highly influential in the final properties of hardened cement paste. Distinguishing C-S-H nano-structure significantly leads to determine its macro scale ensemble properties. This paper is dealt with nano-scale modeling. To achieve this, the most important C-S-H compounds, with a...

Abstract Inexpensive sintered glass-ceramic glaze was prepared from a mixture of Egyptian trachyte with either limestone or magnesite. A represented rock pulverized to powder (<0.083 mm) and also both The well mixed batches were melted near 1450 °C/3 h temperature then the glass melt quenched in water, dried, finally shaped moulds. sintering process pre-shaped glasses, within 1000-1100 °C ra...

In the paper are reported results of first stage tests performed to verify possibility beneficiation a wollastonite mineral (calcium metasilicate, CaSiO3). The studied ore comes from mineralized body located in southern part Sardinia (Italy), area named "Gutturu Is Abis". is composed associated with limestone, garnets and silica. approach problem has consisted grinding followed by flotation sep...

Ahshact-The heat capacity of synthetic andradite garnet (Ca~Fe&Oir) was measured between 9.6 and 365.5 K by cryogenic adiabatic calorimetry and from 340 to 990 K by differential scanning calorimetry. At 298.15 KC&,, and Sz arc 351.9 + 0.7 and 316.4 rf: 2.0 J/(mol-K), respectively. Andradite has a X-peak in Ci, with a maximum at 11.7 t 0.2 K which is presumably associated with the antiferromagne...