Advances in Civil Engineering / 2018 / Article / Tab 3

Research Article

Utilization of Electroplating Sludge as Subgrade Backfill Materials: Mechanical and Environmental Risk Evaluation

Table 3

Unconfined compression strength of lime-coal fly ash stabilized materials (MPa).

Structure layerHighway gradeSpecial heavy trafficHeavy trafficLight traffic

BaseMotorways and first-grade highway≥1.1≥1.0≥0.9
Second-grade and under second-grade highway≥0.9≥0.8≥0.7

Sub-baseMotorways and first-grade highway≥0.8≥0.7≥0.6
Second-grade and under second-grade highway≥0.7≥0.6≥0.5

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