Abstract
Abstract Porosity property was measured with gamma-ray transmission and Archimedes method for construction bricks after that shown the comparison of their results. The gamma-ray transmission and Archimedes method are useful methodology to determine the porosity property of material but gamma-ray is advantage methodology for NDT (Non-Destructive Test) and accuracy than Archimedes method. The NaI(Tl) scintillation detector was setup the transmission method measurement for calculate the porosity. The Ba-131 was used for gamma-ray source. The construction bricks were collected from commercial construction store such as clay, AAC and concrete brick. The gamma-ray transmission method shows better result than Archimedes method
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