Natural sand
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This paper aims to study the effect of coal bottom ash (CBA) as a fine aggregate substitution at high levels on the mechanical properties and microstructure characteristics of concrete. CBA that sourced from a local coal-fired power plant in Vietnam was used to replace the natural sand (NS) in the concrete mixtures at different levels of 0, 30, 50, 70, and 100%.
7p 
vimitsuki
06-05-2025
1
1
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The objectives of the thesis is: Determination of the concentration of the Naturally Occurring Radioactive Materials (NORM) in some building materials commonly used in Lao PDR such as cement, sand, etc. by gamma spectrometers using NaI(Tl) and HPGe detectors.
27p larachdumlanat129
20-01-2021
56
3
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