Attachment A.pdf

This document is a technical specification section (Section 210) for Flowable Fill from an SCDOT (South Carolina Department of Transportation) standard specification manual. The document provides detailed technical requirements for furnishing flowable fill as an alternative to compacted soil, with applications including beddings, encasements, and closures for tanks and pipe and general backfill for trenches and abutments. The specification outlines comprehensive materials requirements, including a mixture of Portland cement, fly ash, fine aggregate, air entraining admixture, and water, with specific guidelines for mix design, material sourcing, and performance expectations.

The technical specification provides extensive construction requirements, including delivery, storage, handling, equipment usage, site preparation, placement techniques, and quality control measures. Key technical details include mix design submission procedures, compressive strength requirements (minimum 35 psi at 16 hours), placement temperature restrictions (ambient air temperature above 40°F), discharge methods, and placement guidelines. The document mandates that flowable fill can be excavatable or non-excavatable, with specific mix design proportion ranges to be determined by the RCE (Resident Construction Engineer), and emphasizes careful preparation, protection from freezing, and proper placement techniques to ensure structural integrity and performance.