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Table 7 PAC test plan.

From: Laboratory Investigation into the Flexural Behavior of Embedded Concrete Sleepers in Two-Stage Concrete with Preplaced Ballast Aggregate

w/c Ballast grade Sand mix
0.4 Ballast grade 1 Sand mix 1
0.35
0.4 Ballast grade 4
0.35
0.4 Ballast grade 1 Sand mix 2
0.35
0.4 Ballast grade 4
0.35