Considering the effects of water to binder ratio (0.40, 0.45, 0.50), NMK contents (0, 1%, 3%, 5%, 7%), superplasticizer dosage (0, 0.04%, 0.08%, 0.12%) and temperature (10°C, 20°C, 30°C, 40°C), the static yield stress test method and small amplitude oscillation shear test method were used to obtain the parameters of static yield stress and storage modulus of nano-metakaolin (NMK) cement paste. The internal structural build-up of NMK cement paste in early hydration (10~90 min) was discussed by the evolution of static yield stress and storage modulus with time. The test results show that NMK promote the internal structural build-up of cement paste in the early hydration period. Within 90 min of cement hydration, the average growth rate of static yield stress of 3% NMK cement paste was about twice that of ordinary cement paste; the average growth rate of storage modulus of 7% NMK cement paste was about 4 times that of ordinary cement paste. The higher the water to binder ratio or the higher the superplasticizer content, the lower the growth rate of internal structural build-up of NMK cement paste; NMK accelerates the build-up of internal structure of cement paste in different temperature environment; an increasing temperature increases the growth rate of static yield stress and storage modulus of NMK cement paste.
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LI Qiuchao, FAN Yingfang?.纳米偏高岭土水泥浆在水化早期的内部结构建立[J].湖南大学学报:自然科学版,2023,(12):102~111