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Pinhole test

Dispersivity is a severe pathology that occurs mainly in clay soils and is usually catastrophic in geotechnical structures susceptible to this damage. Hundreds of dams worldwide have failed due to quality problems, mainly by piping in the body, foundation, spillway, culvert, and other peripheral structures. The pinhole test is currently considered the m...

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In this paper modification potential of dispersive clay by white natural alum is evaluated. The studied clay is
taken from basin of a constructing dam, called “Mirzakhanloo”, located in Zanjan province, northwest of Iran. Dispersion
potential of soil and its modifiability were evaluated using pinhole, single a...

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