Site geology: The geology of the Oak Park site is one of limestone-drift materials overlying regional limestone-bedrock (over which two broad groups of soils occur: light-textured gravelly soils derived from limestone, and more heavy-textured soils derived from till). The soil underlying Miscanthus-plantations used in the experiments the former type, with a perched clay/subsoil layer under the ...

Objectives: The goal is to integrate stone cutting waste into the concrete manufacturing industry reduce environmental degradation. Methods/Analysis: Two types of (Basalt and limestone) were separately collected from local facilities. An experimental program was conducted prepare mixes with 10%, 20%, 30%, 40% replacement sand by two powder. Physical chemical quality testing carried out on water...

X-ray mammography is widely used for detection of breast cancer. Besides its popularity, this method did not have the potential of discriminating a tumor covered with limestone from a pure limestone mass. This might cause misdetection of some tumors covered with limestone or unnecessary surgery for a pure limestone mass. In this study, Ultra-Wide Band (UWB) signals are used for the imaging. A f...

Septic tanks are the second largest source of groundwater nitrate contamination in Nebraska. In this study, the feasibility of coupling a conventional lateral field with a sulfur/limestone layer to treat nitrate in septic tank effluent was investigated using column reactors to simulate the septic tank soil adsorption system. The effects of different hydraulic loading rates, nitrogen loading rat...

Fast pyrolysis of rice husk was performed in a spout-fluid bed to produce water-soluble organics. The effects of mineral bed materials (red brick, calcite, limestone, and dolomite) on yield and quality of organics were evaluated with the help of principal component analysis (PCA). Compared to quartz sand, red brick, limestone, and dolomite increased the yield of the water-soluble organics by 6-...

Limestone hills are now gaining global conservation attention as hotspots for short-range endemic species. Levels of land snail endemism can be high at limestone hills, especially at hill clusters that are geographically isolated. In the State of Perak, Peninsular Malaysia, limestone hills have been opportunistically surveyed for land snails in the past, but the majority have yet to be surveyed...

The ASTM C150 standard specification for Portland cement now permits the cement to contain up to 5% of ground limestone. While these and much higher levels of limestone filler substitution have been employed in Europe and elsewhere for many years, changing the ASTM standard has been a slow process. Having computational tools to assist in better understanding the influence of limestone additions...

Understanding the flowability of cohesive powders at high temperature is great importance for many industrial applications where these materials are handled harsh thermal conditions. For instance, Calcium-Looping (CaL) process, involving transport, storage and fluidization limestone temperature, being considered nowadays as a promising technology thermochemical energy (TCES) in concentrated sol...

Aiming at the existing grouting material, there are a series of problems such as poor fluidity grouting, rapid loss fluidity, non-compactness after hardening, gaps or holes, and like. In this paper, fly ash, limestone powder, silica fume used to replace cement, influence mineral admixtures on rheological properties, strength material systematically studied. The experiment found that: can all im...

Fine powders are the cornerstone of new energy storage solutions to assist concentrated solar power plants. Though, their ability behave like fluid can be seriously affected at high temperatures. This work investigates use nanosilica in fine limestone (calcium carbonate, CaCO3) mitigate promotion cohesion forces Experiments were conducted over powder samples with particle sizes around 45μm. The...