Improved Test Methods for Specific Gravity and Absorption of Coarse and Fine Aggregate (2015) / Chapter Skim
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64 Practical Significance of Aggregate Specific Gravity Test Results This chapter discusses the practical significance of the relative accuracy of the specific gravity determinations. The underlying question is, how close should the result from a revised test method be to that of the current method?
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65 having a gradation of 50 percent passing the No. 4 sieve was considered.
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66 Given: Gmb = 2.400, Pb = 5.0, Gsb = 2.650 VMA G P G mb b sb 100 1 100 2.400 100 5.0 2.650 14.0% ( )
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67 Air = (7.0%/100) × 27 ft3 = 1.89 ft3 Coarse Aggregate = 1674 lb/(2.68 × 62.4 pcf)
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