tial-mass,resultinginreducedmembersizeandfoundationforce.Thus,lightweightaggregateconcretesarebeingusedmoreandmoreforlarge-spanbridgesandhighrisebuildingsinChina.However,thepropertiesoflightweightaggregate,suchasitssurfacetexture,shape,sizedistributio… Lightweightaggregateconcreteisbeingmorewidelyusedinconstruction.Thesurfacetexture,shape,andwaterabsorptionoflightweightaggregatehaveaneffectonthewaterdemandandrheologicalpropertiesoflightweightaggregateconcrete.Theresultsindicatethatsurfacetreatmentofexpandedshalelightweightaggregatewithahydrophobicsurface,decreasesthewateradsorptionoftheaggregateatearlyandlaterages.Theconcretewiththesurface-treatedlightweightaggregaterequireslesswaterthanthatcontainingdryorpre-saturateduntreatedexpandedshaleforagivenslump.Also,pressivestrengththanthelatter.
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