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28· Sand and gravel mining in river systems have led . to severe damages to river basins (W ishart et al. 2008, 314 G.D. Bathrellos and H.D. Skilodimou. Sreebha & Padmalal …
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121· River-sand mining has risen dramatically in the last few decades to fulfil the need for concrete in the building sector. The sand in a river’s bed preserves its environmental …
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51· Both stone dust and river sand have particles smaller than 4.75mm. The size of the particles affects the strength and workability of the concrete. Home; Mega Menu; Stone …
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Therefore, the research proposal is aiming to investigate and characterize the sand materials derived from volcanic, granite and sandstone sources suitable as dam filters.
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sbm river sand mining list of ethiopiaEIA Guidelines River Sand and Stone Mining River sand and stone mining is defined as mining,excavating,extraction or dredging of …
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KEYWORDS: River sand, Crushed sand, mix design compressive strength of concrete. I.INTRODUCTION (2004) studied the effect of varying replacement proportion of sand with …
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Aggregate Production in Ethiopia Gashaw Assefa and Aklilu Gebregziabher Abstract The production of aggregate for the infrastructural development of the country has been increasing …
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The Bale Mountains National Park (BMNP) in Ethiopia comprises the largest fraction of the Afro-Alpine ecosystem in Africa, which provides vital mountain ecosystem services at local, …
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417· Based on the laboratory test results with full replacement of river sand by Ambo Sandstone Fine Aggregate (ASFA), the mean compressive strengths at 7th day was 16.61 MPa, while at the 14th day was 19.62MPa, …
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107· The persisting issues encouraged the researchers to find a sustainable alternative for river sand. Quarry dust is one of the alternatives as it has some advantages …
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