ABSTRACT
Theuseoflightweightaggregates,bothcoarseandfine,hasbeena featureofconstructionforcenturiesbut ,likemostconcretingmaterials, expectationsofperformancehaverisen,andnowweareexpectinga consistent,reliablematerialwithpredictablecharacteristics.Themanufacturersmeettheserequirements ,andthosewhocoulddosoinacosteffectivemannerhavesurvived.
