The cement industry could potentially consume large amounts of solid industrial waste in order to improve its sustainability. suitability selected quarry and mine as secondary raw materials (SRM) was examined for the sustainable production following concept a circular economy. chemical, mineralogical, radiological characterization SRM conducted this study. Its potential use low-carbon low-energ...

The design lifecycle of a data warehousing (DW) system is primarily led by requirements of its end-users and the complexity of underlying data sources. The process of designing a multidimensional (MD) schema and back-end extracttransform-load (ETL) processes, is a long-term and mostly manual task. As enterprises shift to more real-time and ’onthe-fly’ decision making, business intelligence (BI)...

There are several studies that have shown the concrete's strength, and exposure of treated recycled aggregates quarry dust plays a significant part in building industry today. Quarry dust, which is byproduct manufacture concrete, may be used to partially or completely replace natural sand recycling process. During processing granite stones into coarse various sizes, generated as by-product. As ...

The Whistler Squat Quarry (TMM 41372) of the lower Devil's Graveyard Formation in Trans-Pecos Texas is a middle Eocene fossil locality attributed to Uintan biochronological zone Ui1b. Specimens from the Whistler Squat Quarry were collected immediately above a volcanic tuff with prior K/Ar ages ranging from ∼47-50 Ma and below a tuff previously dated to ∼44 Ma. New 40Ar/39Ar analyses of both of ...

In this study we have measured exposure levels to quartz in different parts of the slate industry in Alta, Northern Norway. Full shift personal samples were collected from the breathing zones of outdoor and indoor workers in the slate quarries and a slate factory. The quartz content of respirable dust was between 7 and 41%. The slate factory had the lower quartz levels although 41% of total and...

Extensive field and site investigations were conducted to assess evaluate the situation in presently exploited quarries of cement raw materials Yemen. These have several geological complications represented mainly by high elevations, steep slopes, rugged topography, heterogeneity bed thickness, lithologic composition quality, presence igneous sills dykes, intensive fracturing jointing abundance...

The cement composition of concrete directly affects the CO2emissions to environment. UHPC (Ultra High-Performance Concrete) is a new type rapidly gaining popularity in building industry due its superior strength and endurance. In contrast regular concrete, requires more than twice as much cement, making it expensive leaving significant carbon imprint. this study, waste was substituted with 4%, ...

dogfish and a total allowable catch of zero for 2010. Scientists had recommended a zero catch for this year as studies suggest the northeast Atlantic population is on the verge of collapse. Catches for cod outside the North Sea, hake, monkfish, sole and whiting have also been agreed at levels higher than those recommended by EU advisors. The Bay of Biscay anchovy fishery is to remain closed but...