Minnesota Department of Transportation (MnDOT) · 2025 Standard Specifications for Construction
Section 2520 — Lean Mix Backfill
Minnesota 2025 Standard Specifications for Construction, Section 2520. Full text, cross-references and related pay items on BuildSpec.
2520 LEAN MIX BACKFILL 2520.1 DESCRIPTION This Work consists of placing a lean cementitious, controlled-density backfill into utility and Culvert trenches, or other excavations, where the use of conventional compacting E quipment is impractical. 2520.2 MATERIALS A Concrete ............................................................................................................................... 2461 The Department will provide mix proportions for lean mix backfill in accordance with 2461, “Structural Concrete.” Submit mix designs in accordance with 2461.2E.2, “Concrete Mix Design…
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