olycarboxylic acid superplasticizer concrete additive
TechnicalParameters
Testitems
Performanceindicators
Testresults
Formaldehydecontent,%
≤0.05
0.003
Cementpastefluidity,%
≥240
273
Sodiumcontent,%
≤5.0
1.1
Chlorideioncontent,%
≤0.2
0.13
Alkalicontent(Na2O+0.658K2O),%
≥5.0
1.8
Gascontent,%
Concreteusedforthepreparationofnon-frost
≥3.0
4.5
Concreteusedforthepreparationofantifreeze
≥4.5
Slumpretention,mm
30min
≥180
195
60min
≥150
175
Waterreductionratio,%
≥20
25
Atmosphericbleedingrateratio,%
≤20
0
Pressurebleedingrateratio,%
≤90
45
Compressivestrengthratio,%
3d
≥130
172
7d
≥125
166
28d
≥120
153
Steelcorrosioneffect
Norust
Norust
Shrinkageratio,%
≤135
97
Relativedurabilityindex,%200
≥80
85
Notes:1.Calculationofaboveproductsareconvertedintosolidcontent20%,dosage1%ofthegelledmaterial.
2.Indexbasis:Temporarytechnicalconditionofpassengerdedicatedlineofhighperformanceconcrete