The effects of combined supplementary cementitious materials on physical properties of Kansas concrete pavements : [technical summary].

PDFTech ReportFHWA-KS-13-5Slag cementFly ashConcrete pavementsLaboratory testsSpecimensCondition surveysAlkali silica reactionsWorkabilityAggregate gradationPortland cementProportioningKansasKansas. Dept. of TransportationDistlehorst, JenniferKansas. Dept. of TransportationUS Transportation CollectionThe Kansas Department of Transportation (KDOT) has controlled harmful alkali-silica reactions (ASR)through testing and selective use of sand and gravel aggregates for more than 70 years. ASR can also becontrolled through the addition of a non-reactive coarse aggregate \ue2\u20ac\u153sweetener\ue2\u20ac? and by the judicious useof selected supplementary cementitious materials. Current KDOT specifications allow the use of sandsand gravels that may otherwise undergo ASR with the addition of a \ue2\u20ac\u153sweetener\ue2\u20ac? aggregate. Using one ormore supplementary cementitious materials (SCMs) in a concrete may accelerate or hinder alkali-silicareactions, depending on the alkali and silica contents of the SCM and the aggregates used. Class C fly ashmay aggravate ASR and until 2009 was not approved for use in Kansas pavements.The purpose of this project is to evaluate the effect of combining portland cement with Class C fly ash andslag cement on the physical properties, alkali-silica reactivity (ASR), and durability of concrete containingreactive fine aggregate and limestone coarse aggregate