نتایج جستجو برای: dolomitic composition
تعداد نتایج: 260041 فیلتر نتایج به سال:
Excessive soil acidity is known to have potential negative impacts on crop production. The chemical and physical characteristics of a liming material determine its capacity to neutralize soil acidity. The material CaCO3 equivalent (CCE) and fineness effectiveness estimates are included in effective CCE (ECCE) assessments of a material’s liming value and to decide application rates. The objectiv...
Abstract The scarcity of high-purity limestone subjects the cement industry to consider alternative supplementary cementitious materials for production. This research aimed investigate mechanical properties and hydration kinetics pastes in presence high levels different fineness dolomite, especially formation thaumasite. A dolomite filler with 20% magnesium oxide, average diameters 10 µm, 6 µm ...
Abstract Caves are usually oligotrophic ecosystems, where the organic matter represents a limiting factor to hypogeal community and sediments often significant energy source. With view identifying input influencing ecological processes occurring in caves, as well potential alteration sources of natural equilibriums, geochemical features several typologies clastic from Pertosa-Auletta Cave (Ital...
Many forest soils are acidic and have very low plant-available pools of magnesium. Past present sylvicultural, nutritional and/or climatic pressures endured by ecosystems can result in net losses nutrients ecosystem function losses. Liming with a carbonate product is an alternative to counteract these degradations but the effects liming on biogeochemical cycling over time dynamics Mg released f...
The Gazanjeh bauxite deposit (SE Mahabad, West-Azarbaidjan province) is a typical residual sedimentary deposit with dolomitic limestone host rock of Permian age in northwestern Iran. Calculations of normative values of minerals using obtained results from XRD and XRF analyses in a selected profile indicate that diaspore, hematite, and pyrophyllite were major mineralogical phases of this deposit...
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