OPSS aggregates
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Justification[edit]
Sieve size (mm) | A | B type I | B type II | B type III | M | O | SSM | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
High | Low | High | Low | High | Low | High | Low | High | Low | High | Low | High | Low | |
150 | 100 | 100 | 100 | 100 | 100 | 100 | ||||||||
106 | 100 | 100 | ||||||||||||
37.5 | 100 | 100 | ||||||||||||
26.5 | 100 | 100 | 50 | 100 | 50 | 100 | 50 | 100 | 95 | 100 | 50 | 100 | ||
19 | 85 | 100 | 100 | 100 | 80 | 95 | ||||||||
13.2 | 65 | 90 | 75 | 95 | 60 | 80 | ||||||||
9.5 | 50 | 73 | 32 | 100 | 55 | 80 | 50 | 70 | ||||||
4.75 | 35 | 55 | 20 | 100 | 20 | 55 | 20 | 90 | 35 | 55 | 20 | 45 | 20 | 100 |
1.18 | 15 | 40 | 10 | 100 | 10 | 40 | 10 | 60 | 15 | 40 | 0 | 15 | 10 | 100 |
0.3 | 5 | 22 | 2 | 65 | 5 | 22 | 2 | 35 | 5 | 22 | 5 | 95 | ||
0.15 | 15 | 2 | 65 | |||||||||||
0.075 | 2 | 8 | 0 | 8 | 0 | 10 | 0 | 8 | 2 | 8 | 0 | 5 | 0 | 25 |
d60 | 13 | 6 | 35 | 0.25 | 25 | 6 | 40 | 1.2 | 10 | 5 | 15 | 7 | 35 | 0.15 |
d10 | 0.7 | 0.1 | 1 | 0.08 | 1.2 | 0.075 | 1.2 | 0.085 | 0.6 | 0.09 | 2.5 | 0.3 | 1.2 | NaN |
Content Uniformity | 19 | 60 | 35 | 3 | 21 | 80 | 33 | 14 | 17 | 56 | 6 | 23 | 29 | |
Void ratio (Vukovic) | 0.26 | 0.26 | 0.26 | 0.40 | 0.26 | 0.26 | 0.26 | 0.27 | 0.27 | 0.26 | 0.34 | 0.26 | 0.26 | |
Mean void ratio (Vukovic) | 0.26 | 0.33 | 0.26 | 0.26 | 0.26 | 0.3 | 0.26 | |||||||
K(Hazen)(mm/hr) | 1764 | 36 | 3600 | 23 | 5184 | 20 | 5184 | 26 | 1296 | 29 | 22500 | 324 | 5184 | NaN |
Mean K(hazen)(mm/hr) | 900 | 1812 | 2602 | 2605 | 663 | 11412 | NaN |
Void ratios were calculated based on the coefficient of uniformity (CU)[2][3][4]: Where coefficient of uniformity is the ratio of the 60th and 10th percentile grain sizes:
Permeability (K) was estimated from the 10th percentile grain size using the Hazen formula.
- ↑ OPSS. (2013). Material Specficiation for Aggregates - Base, Subbase, Select Subgrade, and Backfill Material. Retrieved from http://www.raqsb.mto.gov.on.ca/techpubs/ops.nsf/0/0b9aa4d966cac4f9852580820062909e/$FILE/OPSS.MUNI%201010%20Nov%2013.pdf
- ↑ Vuković, Milan and Soro, Andjelko Determination of hydraulic conductivity of porous media from grain-size composition. Water Resources Publications, Littleton, Colo, 1992.
- ↑ Odong, J. (2007). Evaluation of Empirical Formulae for Determination of Hydraulic Conductivity based on Grain-Size Analysis. Journal of American Science, 3(3). Retrieved from http://www.jofamericanscience.org/journals/am-sci/0303/10-0284-Odong-Evaluation-am.pdf
- ↑ Zhang, S. (2017). Relationship between Particle Size Distribution and Porosity in Dump Leaching. the University of British Columbia. Retrieved from https://open.library.ubc.ca/collections/ubctheses/24/items/1.0357233