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

We are committed to sharing findings related to COVID-19 as quickly and safely as possible. Any author submitting a COVID-19 paper should notify us at help@hindawi.com to ensure their research is fast-tracked and made available on a preprint server as soon as possible. We will be providing unlimited waivers of publication charges for accepted articles related to COVID-19. Sign up here as a reviewer to help fast-track new submissions.