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Abstract
This paper studies the compounds influence on the fluidity properties, setting time. strength of cement paste of normal consistent cement paste as well as the compounding of Polycarboxylate superplasticizer (PCE) with Sodium Gluconate on cement hydration heal, at the same time using XRD analyses the hydration products. The results showed that appropriate amount of sodium gluconate can significantly improve the dispersion and dispersion retention ofPolycarboxylate superplasticizer (PCE), improve the adaptability of cement and polycarboxylate superplasticizers, delay the setting time, increase the strength of 3d, 7d in early hydration; Dispersion retention sodium gluconate used can postpone the second temperature peak two hours, however, the value of temperature peak and cement hydration heat had not been changed, compared with the situation of Sodium Gluconate used separately, the quantity of 1d, 7d CH in early hydration was reduced. If the Sodium Gluconate used together with thePolycarboxylate superplasticizer (PCE), then it can postpone the temperature summit time of the hydration fifteen hours,make the temperature peak of hydration increased. But the quantity of 1d, 7d CH in early hydration was increased, compared with the single doped Sodium Gluconate.
（Quoted from Journal of Wuhan University Technology, 2011 Jan, Vol 33, No.1 )
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