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- W2351109743 abstract "A new approach of evaluating superplasticizers was established with mortar slump flow test, based on the identification of the complete separation state of cement particles in the mortar. Three typical behaviors were characterized by the saturation dosages reached with a step-wise increase of superplastizers: i.e. a clear bleeding circle, no change in spread values and reduction in spread values. Three superplasticizers are differentiated by the saturation dosage, the maximum spread, the bleeding behavior and the time-effect of the spreading. It is found that the saturation dosage increases with the decrease of water/cement ratio and the increase of sand/cement ratio. The saturation dosages of superplasticizers determined provide a more reliable reference for the determination of the optimum dosages in concretes with different workability requirements. The mortar test is found more convenient, time - saving, low cost and less physical demanding in comparison with concrete slump." @default.
- W2351109743 created "2016-06-24" @default.
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- W2351109743 date "2002-01-01" @default.
- W2351109743 modified "2023-09-23" @default.
- W2351109743 title "A NEW APPROACH OF EVALUATING SUPERPLASTICIZERS BY MORTAR SLUMP FLOW TEST" @default.
- W2351109743 hasPublicationYear "2002" @default.
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