Core TradesCâu 53 / 700
Which field method determines in-place soil density by excavating a small hole and replacing the soil with a calibrated sand from a known-volume cone?
a.Nuclear density gauge test
b.Sand-cone test
c.Slump test
d.Standard penetration test
Giải thích
The sand-cone test finds in-place density by measuring how much calibrated sand fills the excavated hole to determine its volume, then comparing to the soil weight removed. The nuclear gauge uses radiation, the slump test is for concrete, and the penetration test measures soil resistance, not density directly.
Luyện miễn phí toàn bộ 700 câu hỏi — không cần đăng ký.
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