FP-96 English Version - Eastern Federal Lands Highway Division

Section 304.) AGGREGATE STABILIZATIONDescription304.01 This work consists of processing and incorporating fly ash, lime, orportland cement into the upper layer of a previously constructed aggregatecourse.Material304.02 Conform to the following Subsections:Blotter 703.13Chemical admixtures (set-retarding) 711.03Emulsified asphalt 702.03Fly ash 725.04Lime 725.03Portland cement 701.01Water 725.01Construction Requirements304.03 General. Store chemical additives and admixtures in closed, weatherproofcontainers. Recondition the aggregate course according to Subsections303.03 and 303.05. Scarify the aggregate course to a depth of 4inches according to Subsection 303.08. Size and shape the scarified aggregateto a windrow or blanket that is suitable for mixing. Determine the optimummoisture content and maximum density according to AASHTO T 180method D.304.04 Application. Apply additives when the scarified aggregate is at least 3percent below optimum moisture content and at least 40 bF. Do not apply whenexcessive additive is lost to washing or blowing or when the air temperature isexpected to fall below 40 bF within 48 hours.Apply additives at the required rates by one of the following methods:(a) Dry method. Uniformly apply the additives with an approved spreader.A motor grader is not an approved spreader. Apply water using approvedmethods to obtain the proper moisture content for mixing and compaction.208